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This wintry event will be ushered in by two separate factors. A area of high pressure ridging in from British Columbia will bring cold air into the Prairies, while a low pressure system tracking south of the border will drag up moisture from its northern edge. This combination will mean high elevation snow in parts of central Alberta, and rainfall in the south.
"The rain will start along the Foothills northwest of Calgary and expand eastward through the day as the cold front slides through central Saskatchewan," says The Weather Network meteorologist Kevin MacKay.
Tuesday evening will be the first chance for some snow to develop for the Rockies, with a better chance for accumulation Wednesday as more cold air funnels in from the north.
Locales like Banff, Jasper, and Lake Louise are likely to see snow through Thursday, and some wet snow is not out of the question into Springbank.
"The rain will extend from Alberta to Manitoba by Thursday and continue into the weekend as the boundary between the warm and cold air holds over the U.S. border where 40+ mm is possible," adds MacKay.
Meanwhile, a drastic change in temperatures is forecast across the Prairies, as a high pressure moves down from British Columbia through Alberta. By the end of the week, many cities in Alberta will see highs around 10 degrees or cooler, while higher elevations could see 10+ cm of snowfall.
It is not out of the question for Calgary and Edmonton to see about 2 cm of snow in an average September.
The threat of valley rain and mountain snow will continue today.
WINTER WEATHER ADVISORY until late Friday night for locations above 4500 feet including Butte, Georgetown Lake, Anaconda, Philipsburg, MacDonald, Homestake, Kings Hill, Bozeman, Monida, Raynolds, Lost Trail and other mountain passes will be impacted by winter weather. Rain and snow will develop today, with widespread snow down to 5500 feet by late this evening through Friday morning. Snow above 6000 feet will continue through Friday. Generally, 1 to 4 inches of snow are possible above 5000 feet with 5 to 10 inches above 6000 feet. Locally higher amounts across the higher mountain peaks.
Significant snow is expected in Yellowstone National Park and adjacent parts of Montana. A WINTER STORM WARNING is posted above 8000 feet in the Absaroka and Beartooth Mountains where 8 to 18 inches of snow are possible. In Yellowstone Park, snowfall of 3 to 6 inches above 7500 feet and 6 to 12 inches above 8500 feet.
Snow is also likely in the Butte, Bozeman and Dillon areas on Friday, with some accumulations.
Continued cold with lows in the 30s. Daytime highs continue to run below normal in the 40s and 50s.
Partly sunny skies this weekend. Highs in the upper 40s and 50s.
We'll see daytime highs warming back to the 60s by the middle of the week.
I wonder how unusual all this snow this early is out west??, meanwhile parts of the Midwest and South have been dealing with unseasonably hot weather, guess Mother Nature has decided that she didn’t want to end summer just yet
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, meanwhile parts of the Midwest and South have been dealing with unseasonably hot weather
, guess Mother Nature has decided that she didn’t want to end summer just yet
