National Weather Summary for Tuesday, November 15, 2016
by David Moran, on Nov 15, 2016 10:19:11 AM
No WeatherOps hazards are currently in effect. As cold air begins to move into the Rockies and Washington, light to moderate snowfall will be possible on Tuesday. Further to the east, light rain will be possible across the Northern Plains ahead of a cold front. Rain and light snow will continue across the Pacific Northwest on Wednesday. An area of low pressure will develop in the lee of the Rockies late Wednesday. Behind this low, moderate to heavy snow will be possible across portions of the Intermountain West and Northern Plains.
Significant Snowfall Possible across the Intermountain West and Northern Plains on Thursday
An area of low pressure that will develop in the lee of the Rockies late Wednesday will intensify and track into the Northern Plains on Thursday. Behind the low, northwesterly winds will begin to strengthen and moderate to heavy snow will increase in coverage across the Northern Rockies before spreading into the Northern Plains by Wednesday night. With these stronger winds, blizzard conditions may be possible at times across the higher elevations. Snowfall accumulations of 1-3 inches will be possible across the Northern Plains and 4-8 inches across the Rockies.
Major Cities in Region: Billings, MT, Cheyenne, WY, Denver, CO, Pierre, SD
Snowfall Risk Outline for Thursday
A large area of cloudiness and thunderstorms (green oval) is associated with a broad area of low pressure located over the southwestern Caribbean Sea. Environmental conditions are expected to be conducive for slow development of this disturbance during the next several days. A tropical depression is likely to form by late this week or over the weekend while the low drifts northward or northeastward.
Tropical Infrared Satellite
A Look Ahead
As the low across the Northern Plains continues to move northeastward, moderate to heavy snow will be possible for portions of the Northern Plains and Upper Midwest on Friday. Snowfall amounts of 3-6 inches will be possible across portions of Minnesota, eastern South Dakota, and Iowa with 2-4 inches possible across portions of Nebraska. By Saturday, this low will continue to move northeastward into the Great Lakes where 2-4 inches of snow will be possible.
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