Latest news with #localweather
Yahoo
07-07-2025
- Climate
- Yahoo
Severe storm threat hits Ontario and Quebec, with risk of tornadoes
Warm and humid air is set to hang over parts of Ontario and Quebec early this week, creating the instability needed for thunderstorms to develop once again on Monday. Some storms on Monday could reach severe levels, with Quebec facing an added risk of isolated tornadoes in certain areas. DON'T MISS: Be sure to monitor local weather alerts and incoming conditions throughout the day. A cold front sweeping south on Monday could spark severe storms near Niagara and parts of eastern Ontario, as pockets of instability persist through the afternoon. The hot, humid air mass in place is expected to fuel heavy rainfall during any storms that develop. However, there is some uncertainty over whether storm activity will be concentrated north or south of the border. Dew point and humidex values in Ontario will drop significantly by Tuesday, leading to cooler and less humid conditions. In Quebec, the risk for thunderstorms on Monday will peak early- to mid-afternoon southeast of Montreal. Rotating thunderstorms are possible, and there is a slight tornado risk in this region. SEE ALSO: Confidence in the severity and coverage of storms is moderate, as the placement of the warm front and extent of cloud cover could impact instability levels. Primary hazards from Monday's storms include heavy rainfall, strong wind gusts, and torrential downpours. DON'T MISS: Stay alert for rapidly changing conditions and pay close attention to watches and warnings in your area. Monday's storm risk follows the active weather that arrived on Sunday and continued through the overnight hours. Widespread rain and embedded thunderstorms hit parts of cottage country east of Georgian Bay, as well as into southwestern Quebec. Some areas picked up more than 70 mm of rain as the precipitation lingered along the slow-moving boundary. Localized flooding was reported, and a section of Highway 559 near Killbear Provincial Park was closed in both directions due to a sinkhole on Monday morning. Highway 559 closed in both directions Monday, July 7 Conditions across southern Ontario and Quebec are expected to stabilize on Tuesday, with no notable thunderstorm risk in the forecast. Stay with The Weather Network for all the latest on your forecast across the region. Click here to view the video
CTV News
27-06-2025
- Climate
- CTV News
Ottawa could see 30-50 mm of rain today. Here's when the rain will start
Mother Nature is threatening to rain out activities on the final Friday of June, with up to 50 millimetres of rain expected today and tonight. Environment Canada has issued a special weather statement for Ottawa, calling for 'locally heavy rainfall in thunderstorms.' Some areas could see 30 to 50 mm of rain this afternoon through tonight. 'Heavy showers and thunderstorms are expected today as a low-pressure system tracks east across the region,' Environment Canada said in a statement. 'Heavy downpours can cause flash floods and water pooling on roads.' The rain is expected to begin around 3 p.m. The forecast calls for a break in rain between 8 p.m. and 11 p.m., before showers continue overnight. Environment Canada says it will be a mainly cloudy day with showers beginning this afternoon. Local amount 5 to 10 mm of rain. High 25 C with the humidex making it feel like 27. Showers tonight. Low 17 C. Environment Canada says some areas could see 10 to 20 mm of rain. Saturday will be mainly cloudy with a 60 per cent chance of showers. There is a risk of a morning thunderstorm. High 26 C with the humidex making it feel like 34. Sunday will see a mix of sun and cloud. High 26 C. The outlook for Monday calls for a mix of sun and cloud. High 30 C. Tuesday will be cloudy with a 40 per cent chance of showers. High 28 C. The normal temperatures for this time of year are a high of 26 C and a low of 15 C.
Yahoo
22-06-2025
- Climate
- Yahoo
Hazardous heat in Ontario grows with rising severe storm, tornado risk
Heat and a growing thunderstorm threat this weekend will pose a threat to outdoor plans in southern Ontario. A large cluster of storms is forecast to sweep across southern Ontario Saturday, but with some uncertainty in timing and intensity. However, there is a widespread chance of severe storms north and east of the Greater Toronto Area (GTA), with torrential rainfall, large hail and potent wind gusts as the main hazards. There is even a tornado risk in northeastern Ontario. DON'T MISS: Be sure to keep an eye on local weather alerts as conditions change. In addition to the storm threat, high heat and humidity are expected. Together, they are a dangerous combination––even for relatively healthy individuals. Use extreme caution this weekend and next week as temperatures soar. The ridge of high pressure responsible for the building heat will nudge toward Ontario to start the weekend. This 'ring of fire,' as meteorologists call it, can serve as the focus for development of strong to severe thunderstorms. These clusters of storms can be quite difficult to forecast—but also quite intense with strong winds, torrential rain, and vivid lightning. RELATED: Renewed rounds of storms are expected to develop Saturday afternoon and continue into the overnight hours. Click here to view the video The first batch of storms could build through the late afternoon and evening for northeastern, central and eastern Ontario. The second round could arrive late Saturday night and continue into the overnight hours. There is still lots of uncertainty on how these storms will develop, but all modes of severe weather will be possible—including torrential rains, strong wind gusts, large hail, and even one or two tornadoes in northeastern Ontario (severe-likely region). Make sure you have a way to receive severe weather warnings the moment they're issued. We'll see temperatures and humidity increase to dangerous levels as the ridge of high pressure intensifies through the weekend and into next week. Southern Ontario will endure a multi-day stretch of extreme heat and humidity beginning Sunday, with temperatures climbing into the low- to mid-30s and humidex values rising toward the mid-40s. Sunday through Tuesday will serve as the focus of the extreme heat and humidity. We're expecting at least three days of temperatures of 33°C or higher across most of the GTA and southwest—with daytime humidex values into the mid-40s. Overnight lows will remain in the mid 20s, providing little relief for those living without reliable access to air conditioning. If Toronto airport reaches a temperature of 35°C, likely on Monday, it would fall in the top-10 warmest June days on record. If we see three or more consecutive days of 33°C or higher at Pearson airport, it will have been 13 years (since 2012) since we experienced a stretch of heat like this in June. Record-breaking or not, this is an impressive heat wave that needs to be taken seriously. Drink plenty of water. Avoid caffeine and alcohol, which can be dehydrating. Avoid direct sunlight, especially during peak hours and when the UV rating is high. Wear lightweight, loose-fitting clothing. Use air conditioning when possible. If you do not have access to air conditioning, consider visiting a cooling centre, a shopping centre, or a public library. Check on elderly relatives and other vulnerable neighbors. Avoid strenuous activities during the hottest parts of the day. If you experience symptoms of heat-related illnesses like dizziness, nausea, or confusion, seek medical attention. Stay with The Weather Network for all the latest on conditions across Ontario. Click here to view the video
Yahoo
21-06-2025
- Climate
- Yahoo
Hazardous heat in Ontario grows with rising severe storm, tornado risk
Heat and a growing thunderstorm threat this weekend will pose a threat to outdoor plans in southern Ontario. A large cluster of storms is forecast to sweep across southern Ontario Saturday, but with some uncertainty in timing and intensity. However, there is a widespread chance of severe storms north and east of the Greater Toronto Area (GTA), with torrential rainfall, large hail and potent wind gusts as the main hazards. There is even a tornado risk in northeastern Ontario. DON'T MISS: Be sure to keep an eye on local weather alerts as conditions change. In addition to the storm threat, high heat and humidity are expected. Together, they are a dangerous combination––even for relatively healthy individuals. Use extreme caution this weekend and next week as temperatures soar. The ridge of high pressure responsible for the building heat will nudge toward Ontario to start the weekend. This 'ring of fire,' as meteorologists call it, can serve as the focus for development of strong to severe thunderstorms. These clusters of storms can be quite difficult to forecast—but also quite intense with strong winds, torrential rain, and vivid lightning. RELATED: Renewed rounds of storms are expected to develop Saturday afternoon and continue into the overnight hours. Click here to view the video The first batch of storms could build through the late afternoon and evening for northeastern, central and eastern Ontario. The second round could arrive late Saturday night and continue into the overnight hours. There is still lots of uncertainty on how these storms will develop, but all modes of severe weather will be possible—including torrential rains, strong wind gusts, large hail, and even one or two tornadoes in northeastern Ontario (severe-likely region). Make sure you have a way to receive severe weather warnings the moment they're issued. We'll see temperatures and humidity increase to dangerous levels as the ridge of high pressure intensifies through the weekend and into next week. Southern Ontario will endure a multi-day stretch of extreme heat and humidity beginning Sunday, with temperatures climbing into the low- to mid-30s and humidex values rising toward the mid-40s. Sunday through Tuesday will serve as the focus of the extreme heat and humidity. We're expecting at least three days of temperatures of 33°C or higher across most of the GTA and southwest—with daytime humidex values into the mid-40s. Overnight lows will remain in the mid 20s, providing little relief for those living without reliable access to air conditioning. If Toronto airport reaches a temperature of 35°C, likely on Monday, it would fall in the top-10 warmest June days on record. If we see three or more consecutive days of 33°C or higher at Pearson airport, it will have been 13 years (since 2012) since we experienced a stretch of heat like this in June. Record-breaking or not, this is an impressive heat wave that needs to be taken seriously. Drink plenty of water. Avoid caffeine and alcohol, which can be dehydrating. Avoid direct sunlight, especially during peak hours and when the UV rating is high. Wear lightweight, loose-fitting clothing. Use air conditioning when possible. If you do not have access to air conditioning, consider visiting a cooling centre, a shopping centre, or a public library. Check on elderly relatives and other vulnerable neighbors. Avoid strenuous activities during the hottest parts of the day. If you experience symptoms of heat-related illnesses like dizziness, nausea, or confusion, seek medical attention. Stay with The Weather Network for all the latest on conditions across Ontario. Click here to view the video
Yahoo
21-06-2025
- Climate
- Yahoo
Hazardous heat in Ontario grows with rising severe storm, tornado risk
Heat and a growing thunderstorm threat this weekend will pose a threat to outdoor plans in southern Ontario. A large cluster of storms is forecast to sweep across southern Ontario Saturday, but with some uncertainty in timing and intensity. However, there is a widespread chance of severe storms north and east of the Greater Toronto Area (GTA), with torrential rainfall, large hail and potent wind gusts as the main hazards. There is even a tornado risk in northeastern Ontario. DON'T MISS: Be sure to keep an eye on local weather alerts as conditions change. In addition to the storm threat, high heat and humidity are expected. Together, they are a dangerous combination––even for relatively healthy individuals. Use extreme caution this weekend and next week as temperatures soar. The ridge of high pressure responsible for the building heat will nudge toward Ontario to start the weekend. This 'ring of fire,' as meteorologists call it, can serve as the focus for development of strong to severe thunderstorms. These clusters of storms can be quite difficult to forecast—but also quite intense with strong winds, torrential rain, and vivid lightning. RELATED: Renewed rounds of storms are expected to develop Saturday afternoon and continue into the overnight hours. The first batch of storms could build through the late afternoon and evening for northeastern, central and eastern Ontario. The second round could arrive late Saturday night and continue into the overnight hours. There is still lots of uncertainty on how these storms will develop, but all modes of severe weather will be possible—including torrential rains, strong wind gusts, large hail, and even one or two tornadoes in northeastern Ontario (severe-likely region). Make sure you have a way to receive severe weather warnings the moment they're issued. We'll see temperatures and humidity increase to dangerous levels as the ridge of high pressure intensifies through the weekend and into next week. Southern Ontario will endure a multi-day stretch of extreme heat and humidity beginning Sunday, with temperatures climbing into the low- to mid-30s and humidex values rising toward the mid-40s. Sunday through Tuesday will serve as the focus of the extreme heat and humidity. We're expecting at least three days of temperatures of 33°C or higher across most of the Greater Toronto Area and southwest—with daytime humidex values into the mid 40s. Overnight lows will remain in the mid 20s, providing little relief for those living without reliable access to air conditioning. Drink plenty of water. Avoid caffeine and alcohol, which can be dehydrating. Avoid direct sunlight, especially during peak hours and when the UV rating is high. Wear lightweight, loose-fitting clothing. Use air conditioning when possible. If you do not have access to air conditioning, consider visiting a cooling centre, a shopping centre, or a public library. Check on elderly relatives and other vulnerable neighbors. Avoid strenuous activities during the hottest parts of the day. If you experience symptoms of heat-related illnesses like dizziness, nausea, or confusion, seek medical attention. Stay with The Weather Network for all the latest on conditions across Ontario. Click here to view the video
