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60cm+ expected for Alberta/Montana

...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM MDT MONDAY... * WHAT...Heavy snow expected. Blizzard conditions possible. Total snow accumulations of mostly 15 to 36 inches on the plains, except 7 to 20 inches at lower elevations of Liberty County. Note that even higher amounts are expected in the mountains. North to northeast winds of 15 to 30 mph could gust as high as 40 mph, causing dangerous wind chill temperatures of zero to 10 degrees above zero. * WHERE...Portions of north central Montana, including the Rocky Mountain Front and adjacent plains. * WHEN...From 6 PM Friday to 6 PM MDT Sunday. * IMPACTS...Extreme impacts possible. Widespread tree damage is possible with wet heavy snow and strong winds impacting trees with foliage. Downed power lines are also possible, resulting in widespread power outages. Agricultural interests; outdoor recreational interests, including camping and hunting activities; and travel will also be negatively impacted. * ADDITIONAL DETAILS...This has the potential to be a historically significant early-season snow event. Now is the time to prepare for the winter-like weather!. * CONFIDENCE...High confidence in accumulations, winds and associated impacts.


10:27 AM MDT Friday 27 September 2019 Winter storm watch in effect for areas in yellow (below):

A long duration snowfall event starting this evening through Monday is anticipated for parts of southwestern Alberta as a moisture laden Pacific weather system tracks through the area.

There is still uncertainty around snowfall accumulations as warm surface temperatures will melt initial snowfall. There is also uncertainty as to how far east the snowfall with spread. Current indications suggest that by Monday, total accumulations of 15 to 30 cm over portions of southwestern Alberta are possible.

For the extreme southwest corner of the province, upslope flow will enhance snowfall along higher terrain with localized snowfall totals of over 60 cm possible by Monday.

Rapidly accumulating snow could make travel difficult over some locations. Travel is expected to be hazardous due to reduced visibility in some locations. Surfaces such as highways, roads, walkways and parking lots may become icy and slippery. Public Safety Canada encourages everyone to make an emergency plan and get an emergency kit with drinking water, food, medicine, a first-aid kit and a flashlight.

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