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Little relief next few days for hot, smoky conditions in central, western Canada
Little relief next few days for hot, smoky conditions in central, western Canada

CTV News

time2 days ago

  • Climate
  • CTV News

Little relief next few days for hot, smoky conditions in central, western Canada

Thursday will be warm and sunny but more wet weather is expected for parts of the Maritimes. CTV Atlantic Chief Meteorologist Kalin Mitchell has the latest. Thursday will be warm and sunny but more wet weather is expected for parts of the Maritimes. CTV Atlantic Chief Meteorologist Kalin Mitchell has the latest. Warm Thursday ahead, but more wet weather on the way A broad ridge of heat and high pressure will largely remain in place for the Prairies and Northern Ontario as the area continues to be impacted by soaring temperatures and wildfire smoke. Ridge A broad ridge of high pressure is creating hot, dry conditions in the Prairies. The high pressure also keeping heavy wildfire smoke trapped near the surface impacting air quality. Heat warnings Heat warnings continued into Thursday for much of Alberta. Daytime highs are expected to near or reach above 30 degrees for many communities. A slight move down in temperatures is expected for Friday with daytime highs in the mid-to-high 20s. Temperature then rebounds on Saturday with highs returning to the high-20s and possibly 30 C. There will be a more significant cool down for Alberta Sunday. Much of Saskatchewan and Manitoba remain hot into the weekend as well. Northern areas of both provinces are expected to cool on Sunday. Cooler air will arrive for southern Saskatchewan and southern Manitoba on Monday. Monday temps Warm to hot weather continues for much of the Prairies into the start of the weekend. A more significant lowering of temperature expected Sunday into Monday. Air quality Thick plumes of wildfire smoke are impacting air quality across much of Saskatchewan, Manitoba, and parts of Northern Ontario on Thursday. The primary pollutant from wildfire smoke is fine particulate matter designated as PM2.5. That is particles that 2.5 micrometres or smaller in diameter, far finer than even a single strand of human hair. Those under a Special Air Quality Statement are advised to limit time outdoors and to consider rescheduling outdoor sports, activities and events. Those areas under an Air Quality Warning are advised that during heavy smoke conditions, everyone's health can be put at risk. Limiting time outdoors is necessary during those type of conditions. Common symptoms include eye, nose, and throat irritation that may also be accompanied by headaches and a cough. Air quality Coloured borders containing areas under Air Quality Statements and Warnings. Much of the grey seem on the map is wildfire smoke visible from satellite weather imagery. Wildfire smoke is being advected northward in Saskatchewan on Thursday. There is more to the west and southwest in Manitoba, taking some of it into Northern Ontario. A general southward movement of the smoke is expected on Friday. That may result in improved conditions for parts of Northern Ontario away from the direct border area with Manitoba. Wildfire smoke will continue to impact large areas of Saskatchewan and Manitoba on Friday. It is likely to become thickest for southeastern Saskatchewan and southwestern Manitoba. Smoke is then expected to move northward again from the wildfires in Saskatchewan on Saturday. Smoke from the wildfires in Manitoba will continue to move southward at the start of the weekend. Friday smoke A general south/southwestern movement is expected for smoke sourced from the wildfires on Friday. Rain outlook The most significant rain-producing weather system for the Prairies will be a low-pressure system that develops near Jasper National Park in Alberta on Saturday. The low is forecast to move east to the border of Saskatchewan before being directed nearly due north into the Northwest Territories by the prevailing ridge of high pressure over Saskatchewan and Manitoba. The bulk of the rain with that system is expected to fall in path across central/northern areas of Alberta as well as the extreme northwestern corner of Saskatchewan. It will likely benefit the northern Alberta wildfires with some rain. There is only an outside chance of a helpful amount of rain reaching some of the larger wildfire areas in Saskatchewan. On Monday, a weak weather front trailing to the south of that low may bring some scattered showers along with a risk of thunderstorms to southeastern Saskatchewan and southern Manitoba. On the plus side, cooler air does follow in behind that front and results in the fall in temperatures expected across the Prairies Sunday into Monday. Hot, dry stretch for Maritimes nearing end Thankfully, the wildfire situation has not been as impactful in the Maritimes. That said, the stretch of hot, dry days has elevated the fire danger rating into the High range for most of the region. All three Maritime provinces are instituting a burn ban on domestic category-one burning. There are showers and rain in the forecast for the days ahead as well as a general lowering of temperature. Isolated showers are possible Thursday evening and night in northern and central areas of New Brunswick. A round of showers moves into southwestern Nova Scotia overnight. Those showers will continue to move up the Atlantic coastline of Nova Scotia Friday morning followed by sunny breaks for the afternoon. Saturday A chance of showers on Friday but wet weather expected to be more widespread Saturday. Scattered showers will develop in New Brunswick Friday afternoon into evening. There is a risk of thunderstorms developing with the showers in the northern areas of that province on Friday. A low-pressure system moving in out of the northeastern U.S. will bring widespread rain and showers to the region on Saturday.

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