Update #6 at 5:50 p.m. – The severe thunderstorm watch across Lambton county has ended.
Update #5 at 3:12 p.m. – Only a severe thunderstorm watch remains in effect across Lambton County. Details, here:
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, nickel size hail, and heavy rain.
Hazard… Local rainfall amounts near 50 mm, wind gusts to 90 km/h, and isolated nickel size hail possible.
Timing… Now through to early evening.
Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. 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 ONstorm@canada.ca or tweet reports using #ONStorm.
Update #4 at 12:10 p.m. – A tornado watch has ended in Lambton County. Meanwhile, a thunderstorm watch has been issued and a warning remains in Eastern Lambton. Here are the details:
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, nickel size hail, and heavy rain.
Hazard… Local rainfall amounts near 50 mm, wind gusts to 90 km/h, and isolated nickel size hail possible.
Timing… Now through to early evening.
Large hail can damage property and cause injury. Strong wind gusts can toss loose objects, damage weak buildings, break branches off trees and overturn large vehicles. Remember, severe thunderstorms can produce tornadoes. 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.
Update #3 at 12:03 p.m. – A severe thunderstorm warning has ended for Sarnia, Petrolia and Western Lambton County, but remains in place for Watford, Pinery Park and Eastern Lambton County. A tornado watch remains in effect across all of Lambton County. Here is the latest:
At 12:03 p.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, pea to dime size hail and heavy rain.
Strong wind gusts up to 90 kilometres per hour are expected with thunderstorms over the next hour. Local heavy downpours may cause flooding. Tree damage and power outages are possible.
Take cover immediately, if threatening weather approaches. If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.
Update #2 at 11:54 a.m. – A tornado watch and a severe thunderstorm warning is in effect across Lambton County. Here are the latest details from Environment Canada:
At 11:54 a.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, pea to dime size hail and heavy rain.
Strong wind gusts up to 90 kilometres per hour are expected with thunderstorms over the next hour. Local heavy downpours may cause flooding. Tree damage and power outages are possible.
Radar currently indicates severe thunderstorms east of Sarnia and northeast of Grand Bend.
Take cover immediately, if threatening weather approaches. If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
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 ONstorm@canada.ca or tweet reports using #ONStorm.
Update #1 at 11:25 a.m. – A tornado watch remains in effect in Lambton County. Environment Canada has also issued a severe thunderstorm warning. Here are the details:
At 11:25 a.m. EDT, Environment Canada meteorologists are tracking a severe thunderstorm capable of producing strong wind gusts, pea to dime size hail and heavy rain.
Strong wind gusts up to 90 kilometres per hour are expected along the shorelines of Lake Huron over the next hour. Tree damage and power outages are possible.
Radar currently indicates severe thunderstorms from Sarnia, through Grand Bend and north towards Goderich.
Take cover immediately, if threatening weather approaches. If visibility is reduced while driving, turn on your lights and maintain a safe following distance.
The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.
Environment Canada officials say a tornado watch is in effect for Sarnia, Petrolia, Western Lambton County, Watford, Pinery Park and Eastern Lambton County.
The watch was issued at 10:42 a.m. on Monday, August 3, 2020.
“Conditions are favourable for the development of severe thunderstorms which may produce tornadoes, forecasters say.
“Strong thunderstorms over southern Lake Huron may approach the shoreline between Grand Bend and Bayfield late this morning and there is the potential for a tornado. A few thunderstorms approaching near Sarnia late this morning also have the potential to produce a tornado. There is also a risk for tornadoes early this afternoon across the region.”
Environment Canada officials say to be prepared for severe weather.
“Take cover immediately, if threatening weather approaches,” forecasters say.
“In the event of a tornado, or if a tornado warning is issued for your area, it is recommended you take the following actions: 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.”
The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches, forecasters added.
Watch for more on this story.
