Weather Alert in Montana
Winter Storm Warning issued March 11 at 9:21AM MDT until March 12 at 12:00AM MDT by NWS Missoula MT
AREAS AFFECTED: West Glacier Region
DESCRIPTION: * WHAT...For the Winter Weather Advisory, snow. Additional snow accumulations up to 4 inches. For the first Winter Storm Warning, heavy snow expected. Total snow accumulations up to 6 inches. For the Blizzard Warning, blizzard conditions expected. There is a high likelihood of extreme impacts from strong winds and falling and/or blowing snow on US Highway 2 east of West Glacier to Marias Pass and in backcountry and mountain areas. Wind gusts up to 80 mph. For the second Winter Storm Warning, heavy snow expected. There is a likelihood of major winter weather impacts winter storm impacts. Total snow accumulations between 5 and 20 inches. Winds gusting as high as 40 mph. * WHERE...Polebridge, Marias Pass, Bad Rock Canyon, Highway 83 Bigfork to Swan Lake, Glacier National Park, and Essex. * WHEN...For the Winter Weather Advisory, until 6 PM MDT this evening. For the first Winter Storm Warning, from 6 PM this evening to midnight MDT tonight. For the Blizzard Warning, from midnight tonight to 9 AM MDT Thursday. For the second Winter Storm Warning, from 9 AM Thursday to noon MDT Saturday. * IMPACTS...Whiteout conditions are expected and will make travel treacherous and potentially life-threatening late Wednesday night through Thursday morning. For EXTREME winter storm impacts, expect substantial disruptions to normal activities. Extremely dangerous or impossible traveling conditions. Travel in the impacted areas is not advised. Extensive and widespread closures and disruptions to infrastructure may occur. Life saving actions may be needed. Very strong winds could cause extensive tree damage. Visibilities may drop below 1/4 mile due to falling and blowing snow. * ADDITIONAL DETAILS...High winds will impact all elevations late tonight through Thursday morning with wind gusts of 60 to 80 mph.
INSTRUCTION: Persons should consider delaying all travel. If travel is absolutely necessary, drive with extreme caution. Consider taking a winter storm kit along with you, including such items as tire chains, booster cables, flashlight, shovel, blankets and extra clothing. Also take water, a first aid kit, and anything else that would help you survive in case you become stranded. A Blizzard Warning means severe winter weather conditions are expected or occurring. Falling and blowing snow with strong winds are likely. This will lead to whiteout conditions, making travel extremely dangerous. Do not travel. If you must travel, have a winter survival kit with you. If you get stranded, stay in your vehicle.
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Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
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