Weather Alert in Idaho
Avalanche Warning issued February 18 at 5:22AM MST by NWS Pocatello ID
AREAS AFFECTED: Bear River Range
DESCRIPTION: AVWPIH * WHAT...Avalanche warning. The avalanche danger is HIGH. * WHERE...The Bear River Range and other mountains ranges across northern Utah. * WHEN...Through 6 AM MST Thursday. * IMPACTS...Recent heavy snow combined with strong wind is creating widespread areas of unstable snow. Both human triggered and natural avalanches are likely. Avalanches will increase in size and likelihood throughout the day.
INSTRUCTION: Avoid all avalanche terrain. Stay off of and out from under slopes steeper than 30 degrees. Carry and know how to use avalanche equipment. Find safer riding conditions on slopes less than 30 degrees with no overhead hazard. Consult www.utahavalanchecenter.org or www.avalanche.org for more detailed information. Similar avalanche danger may exist at locations outside the coverage area of this or any avalanche center.
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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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