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 Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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