Weather Alert in Montana
Winter Storm Warning issued March 12 at 5:09AM MDT until March 14 at 12:00PM MDT by NWS Missoula MT
AREAS AFFECTED: West Glacier Region
DESCRIPTION: * WHAT...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 but up to 100 mph in the mountains. For the second Winter Storm Warning, heavy snow expected. There is a likelihood of major winter weather impacts. Total snow accumulations between 5 and 20 inches. Winds gusting as high as 40 mph. * WHERE...Polebridge, Marias Pass, Glacier National Park, Highway 83 Bigfork to Swan Lake, Bad Rock Canyon, and Essex. * WHEN...For the Blizzard Warning, until 9 AM MDT this morning. For the Winter Storm Warning, from 9 AM this morning to noon MDT Saturday. * IMPACTS...Whiteout conditions are expected and will make travel treacherous and potentially life-threatening 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 through this morning with wind gusts of 60 to 80 mph, though gusts to 100 mph are possible on the highest peaks.
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 are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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