Ontario Storm Tracker

Weather advisory in effect for: Peterborough City - Lakefield - Southern Peterborough County Belleville - Quinte West - Eastern Northumberland County Cobourg - Colborne - Western Northumberland County... Stirling - Tweed - Madoc Tamworth - Sydenham - South Frontenac Kingston - Odessa - Frontenac Islands Napanee - Consecon Picton - Sandbanks Park Brockville - Prescott Gananoque - Mallorytown Merrickville-Wolford - Kemptville Westport - Charleston Lake Cornwall - Lancaster Morrisburg - Long Sault Winchester - Newington Winter weather travel advisory in effect for Wednesday morning. A band of snow will develop over the regions early Wednesday morning and continue eastward through Kingston in the morning. The snow may possibly affect travel as far east as Cornwall. Travel may be hazardous for several hours in the morning due to accumulating snow, slippery conditions and reduced visibility. Generally 2 to 4 centimetres of snow is expected with locally higher amounts closer to the shorelines of Lake Ontario. Temperatures are expected to rise above freezing during the middle to late morning and precipitation will become light or mix with showers giving improved travel conditions. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Weather advisory in effect for: Pickering - Oshawa - Southern Durham Region Winter Weather Travel Advisory in effect for today.... Heavy snow currently occurring along and north of Highway 407 may be causing reduced visibilities. This reduction in visibility together with snow quickly accumulating on roads could potentially lead to hazardous driving conditions. The snow should taper to scattered flurries in the afternoon. Areas closer to the lakeshore where the precipitation is a mix of snow and rain are not expected to be affected. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Snowfall warning in effect for: City of Toronto Mississauga - Brampton... Storm total snowfall amounts of 10 to 20 cm today through tonight. The heaviest snowfall is generally expected north of Highway 401. Hazards: 10-20 cm of snow, with heaviest amounts north of Highway 401 Quickly accumulating snow rates at times Impacts: Slippery road conditions Low visibility at times Timing: Now through late this evening As of 1pm, regional snowfall observations range from 8-11 cm across north Toronto and Brampton. As heavy snowfall is expected to continue for several more hours, these observations have prompted an upgrade to Snowfall Warning. Ice pellets and rain will likely mix in this evening, further creating sloppy conditions. Hazardous winter weather travel conditions will continue during this time. Rapidly accumulating snow will make travel difficult. Visibility may be suddenly reduced at times in heavy snow. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Snowfall warning in effect for: Newmarket - Georgina - Northern York Region Uxbridge - Beaverton - Northern Durham Region Vaughan - Richmond Hill - Markham... Storm total snowfall amounts of 15 to 25 cm today through tonight. Hazards: 15-25 cm of snow Quickly accumulating snow rates at times Impacts: Slippery road conditions Low visibility at times Timing: Now through late this evening Regional RADAR and surface observations continue to indicate snow across the region this afternoon. A widespread 15 cm is anticipated, with higher amounts likely in areas under heavier bands of snow. Hazardous winter weather travel conditions will continue during this time. Rapidly accumulating snow will make travel difficult. Visibility may be suddenly reduced at times in heavy snow. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Here is a weather summary from Environment Canada regarding snowfall amounts from our multi-day system. How much snow did you receive? - ... Weather summary for Ontario and the National Capital Region issued by Environment Canada at 12:40 p.m. EST Wednesday 2 December 2020. Discussion. A long duration winter storm impacted much of southern and northeastern Ontario over the past few days. Areas south of Georgian Bay were hardest hit by snow, and we received reports of 30 to 45 cm of snow in this area midday Tuesday before snow continued through last night. Below is a list of storm total snowfall amounts over the past few days. To report severe weather, tweet to us @ECCCWeatherON or email us at [email protected]. The following is a summary of weather event information received by the Ontario Storm Prediction Centre. 1. Summary of snowfall in centimetres from official NAVCanada/Environment Canada sources: Wiarton Airport 44 New Glasgow 25 London Airport 23 Kingsville 19 Grimsby Mountain 17.2 Coldwater 17 The Weather Network (Oakville) 14 Hamilton Airport 14 Ontario Storm Prediction Centre (north Toronto) 9.2 Tobermory 24* Algonquin Park East Gate 19* Beatrice 17* *estimated change in snow depth from an auto station 2. Summary of snowfall in centimetres from CoCoRaHS*: Eugenia 41.9 Bognor 40.9 Milverton 32.0 Phelpston 29.5 Strathroy 29.0 Markdale 28.2 Gooderham 20.3 Woodstock 20.1 Mississauga Lorne Park 16.3 Aurora 14.5 Kitchener 12.0 Windsor 10 to 12 *CoCoRaHS stands for the Community Collaborative Rain, Hail, & Snow Network, and is a network of precipitation measurements from volunteers. 3. Summary of snowfall in centimetres from social media and weather spotters: Waubaushene 27 Midland 25 Ingersoll 24 North Bay 22 Salford 20 Barrie 19 Tobermory 17 Tillsonburg 17 Orangeville 16 Brampton 15 Huntsville 15 Ancaster 12 Our meteorologists would like to thank volunteers and weather spotters for relaying meteorological information to our office! Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/OSPC

Weather advisory in effect for: Brantford - County of Brant Woodstock - Tillsonburg - Oxford County London - Parkhill - Eastern Middlesex County... Kitchener - Cambridge - Region of Waterloo Mount Forest - Arthur - Northern Wellington County Listowel - Milverton - Northern Perth County Stratford - Mitchell - Southern Perth County Winter Weather Travel Advisory in effect for this afternoon and evening. This Winter Weather Travel Advisory is changed from a Snow Squall Watch that was previously in effect. Brief periods of low visibility in heavy flurries are expected; locally 5 to 15 cm of snow is possible. Hazards: Brief periods of low visibility in heavy snow and blowing snow Snowfall amounts of 5 to 15 cm locally. Timing: Heavy flurries will last through this afternoon and evening. Impacts: Motorists should be prepared for hazardous winter driving conditions. The morning commute may be impacted. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Snowfall warning in effect for: London - Parkhill - Eastern Middlesex County Woodstock - Tillsonburg - Oxford County Newmarket - Georgina - Northern York Region... Uxbridge - Beaverton - Northern Durham Region Lindsay - Southern Kawartha Lakes Listowel - Milverton - Northern Perth County Stratford - Mitchell - Southern Perth County Guelph - Erin - Southern Wellington County Kitchener - Cambridge - Region of Waterloo Mount Forest - Arthur - Northern Wellington County Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County Shelburne - Mansfield - Northern Dufferin County Caledon Halton Hills - Milton Storm total snowfall amounts of 15 to locally 20 cm today through tonight. Hazards: 15-20 cm of snow Quickly accumulating snow rates at times Impacts: Slippery road conditions Low visibility at times Timing: Now through late this evening As of noon, regional snowfall observations range from 7-11 cm from London to Guelph. As heavy snowfall is expected to continue for several more hours, these observations have prompted an upgrade to Snowfall Warning. Hazardous winter weather travel conditions will continue during this time. Rapidly accumulating snow will make travel difficult. Visibility may be suddenly reduced at times in heavy snow. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Snow squall warning in effect for: Goderich - Bluewater - Southern Huron County Wingham - Blyth - Northern Huron County... Snow squalls are expected. Under the snow squall bands, visibilities will be significantly reduced due to the heavy snow combined with blowing snow, and snow will quickly accumulate. Lake effect snow squall bands are coming onshore between Grand Bend and Port Albert and are expected to intensify later this morning. The snow squalls will continue through the day and into tonight. Local snowfall amounts of 15 to 20 cm in 12 hours are likely. Snow squalls will taper off early Wednesday morning. Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common. Visibility will be suddenly reduced to near zero at times in heavy snow and blowing snow. Rapidly accumulating snow could make travel difficult over some locations. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

40th Ontario tornado of 2020 confirmed in Thornbury from Oct 23 (Friday). Rated EF0.

Weather advisory in effect for: Petawawa - Pembroke - Cobden Renfrew - Arnprior - Calabogie Smiths Falls - Perth - Eastern Lanark County... Gananoque - Mallorytown Westport - Charleston Lake Winter Weather Travel Advisory in effect for this morning. A band of heavy snow has developed over the region and will slowly move east this morning. The combination of quick snow accumulation and reduced visibilities may make driving hazardous. Untreated roads may become icy or slippery. Motorists are advised to exercise caution. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

A few of the images sent to us from the October 23rd severe weather event in SW and central Ontario. (select image for description/location)

Weather advisory in effect for: Belleville - Quinte West - Eastern Northumberland County Cobourg - Colborne - Western Northumberland County ... Winter Weather Travel Advisory in effect for today. 7-14 cm of snow and poor visibility expected. This Winter Weather Travel Advisory has been upgraded from a Special Weather Statement that was previously in effect. Hazards: 7-14 cm of snow Quickly accumulating snow rates at times Impacts: Slippery road conditions Low visibility at times Timing: Now through midnight tonight Snow is beginning to spread across the region this morning and will continue to fall through this evening. Snowfall accumulation will generally increase the further one is from Lake Ontario. Areas near Lake Ontario may switch over to ice pellets and/or rainfall late this afternoon or evening, creating sloppy conditions. Motorists should be prepared for winter weather driving conditions. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Lake effect snow is developing over Lake Huron bringing snow for those in the snow belt. A snow squall watch and winter travel advisory is in effect as lake snow intensifies later this afternoon. Total snowfall amounts of 10-20cm are expected under the heaviest bands. Motorists should be prepared for hazardous winter driving conditions and give yourself some extra time if traveling.

Waterspouts over Western Lake Erie! Land breeze type waterspouts that formed over Western Lake Erie will continue for the rest of the morning and will move towa...rds the Canadian shoreline. Here is our waterspout potential forecast map for 11 am EDT. Send us your reports. https://www.youtube.com/channel/UCFNKN-c3eBxsMgbUVX03TaQ See more

Fog advisory issued for: Prescott and Russell Ottawa North - Kanata - Orléans Ottawa South - Richmond - Metcalfe... Cornwall - Lancaster Maxville - Alexandria Morrisburg - Long Sault Winchester - Newington Locally dense fog tonight. Locally dense fog has developed over the area early tonight. This fog will last for most of the night, but should slowly lift with time. Travel is expected to be hazardous due to reduced visibility. If travelling, be prepared for areas of near-zero visibility. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Special weather statement in effect for: Barry's Bay - Killaloe Renfrew - Arnprior - Calabogie Snowfall event coming to an end late this morning.... Additional snowfall amounts of 2 cm are possible this morning. Motorists should be prepared for winter driving conditions. Precipitation associated with this low pressure system is expected to move east of the area this afternoon. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

The latest power outage update from Hydro One outage map is showing 1,164 outages affecting 62,974 customers. According to restoration time everyone should be restored by Nov 20, 2020, 4:00PM, however we hope it doesn’t take that long. Thank you to all hydro crews working around the clock to get everyone restored.

Snowfall warning in effect for: Apsley - Woodview - Northern Peterborough County Peterborough City - Lakefield - Southern Peterborough County... Significant snowfall this afternoon into tonight. Snow, at times heavy, is forecast to begin this afternoon. Snowfall amounts of 15 to 20 cm are expected by the time the snow tapers off Monday morning. This heavy snow is due to a strengthening low pressure system that will track northeastward across the lower Great Lakes tonight. Be prepared to adjust your driving with changing road conditions. Rapidly accumulating snow could make travel difficult over some locations. Visibility may be suddenly reduced at times in heavy snow. Snowfall warnings are issued when significant snowfall is expected. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Fog advisory in effect for: Ottawa North - Kanata - Orléans Ottawa South - Richmond - Metcalfe Prescott and Russell... Maxville - Alexandria Winchester - Newington Locally dense fog tonight. Locally dense fog has developed over the area early tonight. This fog will last for most of the night, but should slowly lift with time. Travel is expected to be hazardous due to reduced visibility. If travelling, be prepared for areas of near-zero visibility. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Snow squall watch in effect for: Brantford - County of Brant Woodstock - Tillsonburg - Oxford County Kitchener - Cambridge - Region of Waterloo... Mount Forest - Arthur - Northern Wellington County London - Parkhill - Eastern Middlesex County Goderich - Bluewater - Southern Huron County Listowel - Milverton - Northern Perth County Stratford - Mitchell - Southern Perth County Wingham - Blyth - Northern Huron County Saugeen Shores - Kincardine - Southern Bruce County Lake effect snow today through early Wednesday morning; poor visibility and locally 10 to 20 cm of snow expected. Hazards: Whiteout conditions in heavy and blowing snow Snowfall amounts of 10 to 20 cm locally Timing: Heavy flurries will start later this morning and last through tonight. The worst snow squall conditions are expected later this afternoon and this evening. Impacts: Motorists should be prepared for hazardous winter driving conditions. Snow squalls cause weather conditions to vary considerably; changes from clear skies to heavy snow within just a few kilometres are common. Visibility may be suddenly reduced at times in heavy snow. Consider postponing non-essential travel until conditions improve. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Frost advisory in effect for: Sarnia - Petrolia - Western Lambton County Watford - Pinery Park - Eastern Lambton County Chatham-Kent - Rondeau Park... Windsor - Leamington - Essex County Rodney - Shedden - Western Elgin County St. Thomas - Aylmer - Eastern Elgin County Simcoe - Delhi - Norfolk Dunnville - Caledonia - Haldimand Niagara Falls - Welland - Southern Niagara Region St. Catharines - Grimsby - Northern Niagara Region City of Hamilton Frost may damage some crops in frost-prone areas. Temperatures will reach near or below zero tonight. Take preventative measures to protect frost-sensitive plants and trees. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Showers likely for SW region after 9pm. We'll see how thunderstorms hold up for the next few hours but at least a few rumbles are possible. Windy conditions will exist as the cold front moves through this evening, but not expecting anything severe.

Weather summary for Ontario and the National Capital Region issued by Environment Canada at 7:00 a.m. EDT Saturday 24 October 2020.... Discussion. A Colorado Low brought a variety of weather to much of southern and northeastern Ontario on Friday, October 23rd. Southern Ontario basked in temperatures more typical of summer, with several record high temperatures being set. In addition to the warm and humid conditions, several supercell thunderstorms affected areas near Georgian Bay during the afternoon with numerous reports of large hail up to the size of golf balls. Some of the communities affected include Orillia, Wyevale, Penetanguishene, Oro-Medonte, Waubaushene and Midhurst. Over northeastern Ontario where temperatures remained in the single digits, a soaking rainfall occurred with many stations reporting in excess of 50 mm. Areas farther north from Wawa to Timmins were sufficiently cold to receive several centimetres of snow. The following is a summary of weather event information received by Environment and Climate Change Canada as of 6:00 AM EDT, Saturday October 24th. 1. Summary of record high temperatures in degrees Celsius for Friday, October 23rd: London Airport New record of 23.1 Previous record of 22.8 from 1963 Records began in 1940 Sarnia Airport New record of 24.7 Previous record of 23.1 from 1991 Records began in 1968 Kitchener-Waterloo New record of 24.6 Previous record of 24.4 from 1920 Records began in 1914 Hamilton Airport New record of 24.7 Previous record of 23.0 from 1991 Records began in 1960 Vineland New record of 26.6 Previous record of 25.0 from 1991 Records began in 1924 Welland New record of 25.8 Previous record of 24.5 from 1991 Records began in 1872 Peterborough New record of 24.2 Previous record of 22.7 from 1991 Records began in 1969 Trenton New record of 24.5 Previous record of 21.7 from 1975 Records began in 1935 Ottawa International Airport New record of 24.8 Previous record of 24.6 from 1979 Records began in 1939 2. Summary of rainfall amounts in millimetres from Thursday, October 22nd to Friday , October 23rd: Quirke Lake* 85.9 Shaw Dam Lake* 71.1 Cartier* 56.7 Lake Labitche* 53.7 Gore Bay 52.8 Massey* 50.0 North Bay Airport 48.4 Suez Crossing* 48.4 Twinkle Lake* 46.8 Beaver Lake* 46.4 Sudbury Airport 44.1 Burwash* 43.3 Nat* 43.1 Sault Ste. Marie Airport 42.6 * Denotes data from the Ontario Ministry of Natural Resources and Forestry 3. Summary of snowfall amounts in centimetres from Friday, October 23rd: Timmins 12 (estimated) Chapleau 8 (estimated) Lake Superior Provincial Park 8 (estimated) Please note that this summary may contain preliminary or unofficial information and does not constitute a complete or final report. End/OSPC

Weather advisory in effect for: City of Toronto Newmarket - Georgina - Northern York Region Pickering - Oshawa - Southern Durham Region... Uxbridge - Beaverton - Northern Durham Region Vaughan - Richmond Hill - Markham Lindsay - Southern Kawartha Lakes City of Hamilton Guelph - Erin - Southern Wellington County Kitchener - Cambridge - Region of Waterloo Mount Forest - Arthur - Northern Wellington County Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County Shelburne - Mansfield - Northern Dufferin County Burlington - Oakville Caledon Halton Hills - Milton Mississauga - Brampton Hanover - Dundalk - Southern Grey County Winter Weather Travel Advisory in effect for today. 7-14 cm of snow and poor visibility expected. This Winter Weather Travel Advisory has been upgraded from a Special Weather Statement that was previously in effect. Hazards: 7-14 cm of snow Quickly accumulating snow rates at times Impacts: Slippery road conditions Low visibility at times Timing: Now through midnight tonight Snow is beginning to spread across the region this morning and will continue to fall through this evening. Snowfall accumulation will generally increase the further one is from Lake Ontario. Areas near Lake Ontario may switch over to ice pellets and/or rainfall late this afternoon or evening, creating sloppy conditions. Motorists should be prepared for winter weather driving conditions. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Happy Thanksgiving Wishing everyone a smooth transition to the cooler Autumn days ahead, and thanking all of those who contribute to the farming industry in Ontario, Canada and beyond... Here's to a successful and safe harvest!

Frost advisory in effect for: Barrie - Collingwood - Hillsdale Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County... Shelburne - Mansfield - Northern Dufferin County Patchy frost tonight. Patchy frost is expected tonight as temperatures fall to near the freezing mark. Cover up plants, especially those in frost-prone areas. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

The severe weather threat has ended for tonight. Thanks to everyone for their patience and staying safe as always. It was a busy one but luckily not too impactful. A stretch of cool weather starts tonight and probably sticks around for quite a while ... not surprising considering it's already late October (but still a little disappointing). The 2020 season was like nothing we've seen before. Many storm events this year that we won't forget soon!

Frost advisory in effect for: Plevna - Sharbot Lake - Western Lanark County Smiths Falls - Perth - Eastern Lanark County Ottawa North - Kanata - Orléans... Ottawa South - Richmond - Metcalfe Prescott and Russell Cornwall - Lancaster Maxville - Alexandria Morrisburg - Long Sault Winchester - Newington Brockville - Prescott Gananoque - Mallorytown Merrickville-Wolford - Kemptville Westport - Charleston Lake Stirling - Tweed - Madoc Tamworth - Sydenham - South Frontenac Patchy frost tonight. Patchy frost is expected again tonight as temperatures fall to near the freezing mark. Cover up plants, especially those in frost-prone areas. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm warning in effect for: Uxbridge - Beaverton - Northern Durham Region Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes Lindsay - Southern Kawartha Lakes... Haliburton - Minden - Southern Haliburton County Oxtongue Lake - Fort Irwin - Northern Haliburton County An line of strong to locally severe thunderstorms is moving eastward through the regions. A few winds gusts as high as 90 km/h are possible with these storms. Brief torrential downpours, frequent cloud-to-ground lightning, and hail will also be associated with some of these storms. Take cover immediately, if threatening weather approaches. Large hail can damage property and cause injury. Intense lightning is likely with any thunderstorm that develops. Remember, severe thunderstorms can produce tornadoes. Avoid areas of the building that could be affected by falling debris such as tree limbs. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing one or more of the following: large hail, damaging winds, torrential rainfall. The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm warning in effect for: Maxville - Alexandria Prescott and Russell... Current details: At 5:39 p.m. EDT, Environment Canada meteorologists are tracking a line of severe thunderstorms capable of producing strong wind gusts and pea to dime size hail. This line of severe thunderstorms is located from Voyageur Provincial Park to St-Bernardin, moving southeast at 50 km/h. Hazard: 90 km/h wind gusts. Locations impacted include: Voyageur Provincial Park, Lochinvar, Ste-Anne-de-Prescott and St. Davids. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Take cover immediately, if threatening weather approaches. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm warning in effect for: Ottawa North - Kanata - Orléans Prescott and Russell... Current details: At 4:56 p.m. EDT, Environment Canada meteorologists are tracking a line of severe thunderstorms capable of producing strong wind gusts and pea to dime size hail. This line of severe thunderstorms is located from 15 kilometres north of Wendover to 8 kilometres northwest of Orléans, moving southeast at 50 km/h. Hazard: 90 km/h wind gusts. Locations impacted include: Rockland, Beauchampville, Sarsfield, Clarence, Hammond, Wendover, Lac Georges and Alfred. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Take cover immediately, if threatening weather approaches. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Frost advisory in effect for: Hanover - Dundalk - Southern Grey County Owen Sound - Blue Mountains - Northern Grey County Saugeen Shores - Kincardine - Southern Bruce County... Barrie - Collingwood - Hillsdale Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County Shelburne - Mansfield - Northern Dufferin County Mount Forest - Arthur - Northern Wellington County Caledon Newmarket - Georgina - Northern York Region Uxbridge - Beaverton - Northern Durham Region Belleville - Quinte West - Eastern Northumberland County Cobourg - Colborne - Western Northumberland County Kingston - Odessa - Frontenac Islands Napanee - Consecon Stirling - Tweed - Madoc Tamworth - Sydenham - South Frontenac Smiths Falls - Perth - Eastern Lanark County Brockville - Prescott Gananoque - Mallorytown Merrickville-Wolford - Kemptville Westport - Charleston Lake Cornwall - Lancaster Maxville - Alexandria Morrisburg - Long Sault Winchester - Newington Ottawa North - Kanata - Orléans Ottawa South - Richmond - Metcalfe Patchy frost tonight into early Sunday morning. As temperatures fall to near the freezing mark tonight, patchy frost is forecast to develop. Cover up plants, especially those in frost-prone areas. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Lake Simcoe vicinity and to the northeast, and the shoreline of eastern Lake Erie now has the greatest strong wind and hail threat. This is the main band of thunderstorms along the front. Conditions improve after the front clears your area (with dropping temps tonight). The rest of the storms have weakened some but will still hold enough energy to continue being gusty. Expecting storms at the west end of Lake Ontario by 8pm or so. Further tornado threats are not evident right now, but it's being monitored.

Severe thunderstorm watch in effect for: Ottawa North - Kanata - Orléans Ottawa South - Richmond - Metcalfe Prescott and Russell... Cornwall - Lancaster Maxville - Alexandria Morrisburg - Long Sault Winchester - Newington Brockville - Prescott Gananoque - Mallorytown Merrickville-Wolford - Kemptville Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts. These thunderstorms will be possible this afternoon into early this evening. The main hazard will be wind gusts up to 90 km/h. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall. The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Potential will exist for a few severe thunderstorms by mid-afternoon today in eastern Ontario. A narrow area, generally from Ottawa to Cornwall and points eastward into Quebec, will have the greatest risk for damaging winds, hail, and an isolated tornado in these storms. Stay tuned for any updates and keep in touch with your local forecast/weather alerts. Storms will be moving at a decent pace so activity is expected to move out by early evening into Quebec and the northeast US.

LaSalle, ON. Comment if you have storm pics!

Frost advisory in effect for: Belleville - Quinte West - Eastern Northumberland County Cobourg - Colborne - Western Northumberland County Newmarket - Georgina - Northern York Region... Pickering - Oshawa - Southern Durham Region Uxbridge - Beaverton - Northern Durham Region Kingston - Odessa - Frontenac Islands Napanee - Consecon Some plants may be damaged or even destroyed by frost. Patchy frost is expected early this morning. Low temperatures are forecast to drop to near or just below the freezing mark. Cover up plants, especially those in frost-prone areas. Take preventative measures to protect frost-sensitive plants and trees. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm warning in effect for: Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County Shelburne - Mansfield - Northern Dufferin County... Barrie - Collingwood - Hillsdale Midland - Coldwater - Orr Lake Orillia - Lagoon City - Washago An line of strong to severe thunderstorms is moving eastward through or toward the regions. Damaging wind gusts, brief torrential downpours, frequent cloud-to-ground lightning, and large hail will also be associated with some of these storms. There also is the risk for a tornado. Take cover immediately, if threatening weather approaches. Large hail can damage property and cause injury. Intense lightning is likely with any thunderstorm that develops. Remember, severe thunderstorms can produce tornadoes. Avoid areas of the building that could be affected by falling debris such as tree limbs. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing one or more of the following: large hail, damaging winds, torrential rainfall. The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Frost advisory in effect for: Barrie - Collingwood - Hillsdale Hanover - Dundalk - Southern Grey County Owen Sound - Blue Mountains - Northern Grey County... Saugeen Shores - Kincardine - Southern Bruce County Innisfil - New Tecumseth - Angus Orangeville - Grand Valley - Southern Dufferin County Shelburne - Mansfield - Northern Dufferin County Newmarket - Georgina - Northern York Region Uxbridge - Beaverton - Northern Durham Region Caledon Guelph - Erin - Southern Wellington County Kitchener - Cambridge - Region of Waterloo Mount Forest - Arthur - Northern Wellington County Listowel - Milverton - Northern Perth County Stratford - Mitchell - Southern Perth County Wingham - Blyth - Northern Huron County Brantford - County of Brant Woodstock - Tillsonburg - Oxford County Some plants may be damaged or even destroyed by frost. Patchy frost is expected tonight and into early Friday morning. Low temperatures are forecast to drop to near or just below the freezing mark. Cover up plants, especially those in frost-prone areas. Take preventative measures to protect frost-sensitive plants and trees. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm warning continued for: Watford - Pinery Park - Eastern Lambton County, Ont. Sarnia - Petrolia - Western Lambton County, Ont. Chatham-Kent - Rondeau Park, Ont. Windsor - Leamington - Essex County, Ont. ... London - Parkhill - Eastern Middlesex County, Ont. Strathroy - Komoka - Western Middlesex County, Ont. Rodney - Shedden - Western Elgin County, Ont. Orillia - Lagoon City - Washago, Ont. Huntsville - Baysville, Ont. Town of Parry Sound - Rosseau - Killbear Park, Ont. Oxtongue Lake - Fort Irwin - Northern Haliburton County, Ont. Haliburton - Minden - Southern Haliburton County, Ont. Owen Sound - Blue Mountains - Northern Grey County, Ont. Hanover - Dundalk - Southern Grey County, Ont. Wingham - Blyth - Northern Huron County, Ont. Listowel - Milverton - Northern Perth County, Ont. Goderich - Bluewater - Southern Huron County, Ont. Stratford - Mitchell - Southern Perth County, Ont. Mount Forest - Arthur - Northern Wellington County, Ont. Orangeville - Grand Valley - Southern Dufferin County, Ont. Severe thunderstorm warning issued tornado warning for: Innisfil - New Tecumseth - Angus, Ont. Current details: Isolated strong to severe thunderstorms are moving northeastward through or toward portions of the region. In addition, a more organized line of severe thunderstorms is expected to move across the region from the west late this afternoon. Damaging wind gusts, brief torrential downpours, frequent cloud-to-ground lightning, and large hail will also be associated with some of these storms. There also is the risk for a tornado. Large hail can damage property and cause injury. Intense lightning is likely with any thunderstorm that develops. Remember, severe thunderstorms can produce tornadoes. Take cover immediately, if threatening weather approaches. Avoid areas of the building that could be affected by falling debris such as tree limbs. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing one or more of the following: large hail, damaging winds, torrential rainfall. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Severe thunderstorm watch issued for: Uxbridge - Beaverton - Northern Durham Region, Ont. Severe thunderstorm watch continued for: Simcoe - Delhi - Norfolk, Ont Elgin, Ont.... Oxford - Brant, Ont. Newmarket - Georgina - Northern York Region, Ont. Midland - Coldwater - Orr Lake, Ont. Parry Sound - Muskoka, Ont. Guelph - Erin - Southern Wellington County, Ont. Kitchener - Cambridge - Region of Waterloo, Ont. Dufferin - Innisfil, Ont Caledon, Ont. Severe thunderstorm watch replaces tornado watch for: Fenelon Falls - Balsam Lake Park - Northern Kawartha Lakes, Ont. Current details: Risk of severe thunderstorms with damaging wind gusts. A couple of lines of thunderstorms are expected to move northeastward across the regions late this afternoon and this evening. Hazards: Wind gusts of 90 km/h. Frequent cloud-to-ground lightning. Brief poor visibilities and ponding of water on roads in torrential downpours. Large hail. Timing: Late this afternoon and this evening. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Hail and locally heavy rain are also possible. Be prepared for severe weather. Take cover immediately, if threatening weather approaches. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.

Tornado warning continued for: Innisfil - New Tecumseth - Angus, Ont. Tornado warning ended for: Shelburne - Mansfield - Northern Dufferin County, Ont. ... Current details: A thunderstorm that may contain a tornado north of Angus is heading toward Midhurst. Large hail is also associated. This is a dangerous and potentially life-threatening situation. Take cover immediately, if threatening weather approaches. If you hear a roaring sound or see a funnel cloud, swirling debris near the ground, flying debris, or any threatening weather approaching, take shelter immediately. Go indoors to a room on the lowest floor, away from outside walls and windows, such as a basement, bathroom, stairwell or interior closet. Leave mobile homes, vehicles, tents, trailers and other temporary or free-standing shelter, and move to a strong building if you can. As a last resort, lie in a low spot and protect your head from flying debris. Lightning kills and injures Canadians every year. Remember, when thunder roars, go indoors! The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches. Tornado warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing tornadoes. Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.