Weather Alert in Idaho
Winter Weather Advisory issued February 23 at 11:28AM MST until February 25 at 5:00PM MST by NWS Pocatello ID
AREAS AFFECTED: Sawtooth/Stanley Basin; Sun Valley Region; Big Lost Highlands/Copper Basin
DESCRIPTION: * WHAT...Moderate to heavy snow expected above 7000 feet. Total snow accumulations between 7 and 17 inches. Amounts exceeding 2 feet are possible across the Sawtooths. Winds gusts up to 35 mph are possible, peaking in excess of 45 mph Tuesday night and Wednesday morning. * WHERE...Big Lost Highlands/Copper Basin, Sawtooth/Stanley Basin, and Sun Valley Region. * WHEN...From 5 PM this afternoon to 5 PM MST Wednesday. * IMPACTS...Travel could be very difficult. Some blowing and drifting snow is expected, especially in exposed areas and higher ridgetops.
INSTRUCTION: Slow down and use caution while traveling. Call 5 1 1 or visit 511.idaho.gov for the latest road conditions.
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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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