Weather Alert in Washington
Winter Storm Watch issued March 9 at 1:42PM PDT until March 13 at 11:00AM PDT by NWS Seattle WA
AREAS AFFECTED: Olympics
DESCRIPTION: * WHAT...For the Blizzard Warning, blizzard conditions expected. Total snow accumulations up to 3 feet. Winds gusting as high as 45 mph. For the Winter Storm Watch, continued heavy snow possible. * WHERE...Olympics. * WHEN...For the Blizzard Warning, from 5 PM Tuesday to 11 PM PDT Wednesday with winds peaking Wednesday evening into late Wednesday night. For the Winter Storm Watch, from Wednesday evening through Friday morning. * IMPACTS...Visibilities may drop below 1/4 mile due to falling and blowing snow. Travel could be very difficult to impossible. Gusty winds could bring down tree branches.
INSTRUCTION: Snow covered roads may make travel conditions difficult to impossible at times and cause delays. Temporary road closures possible. Gusty winds may limit visibility down to a quarter of a mile at times.
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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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