Weather Alert in Washington
Winter Storm Watch issued March 10 at 2:37AM PDT until March 14 at 5:00AM PDT by NWS Seattle WA
AREAS AFFECTED: Cascades of Whatcom and Skagit Counties; Cascades of Snohomish and Northern King Counties
DESCRIPTION: * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations between 10 and 20 inches. For the Blizzard Warning, blizzard conditions expected primarily Wednesday evening. Winds gusting as high as 45 mph with additional snow accumulations of 8 to 12 inches. Total snow accumulations between 1 and 3 feet possible. For the Winter Storm Watch, continued heavy snow is possible late Wednesday night through late Friday night. * WHERE...Cascades of Snohomish and Northern King Counties and Cascades of Whatcom and Skagit Counties. * WHEN...For the Winter Weather Advisory, until 6 PM PDT Wednesday. For the Blizzard Warning, from 6 PM Wednesday to 5 AM PDT Thursday. For the Winter Storm Watch, from late Wednesday night through late Friday night. * IMPACTS...Snow-covered roads may make travel conditions difficult to impossible at times through the mountains and cause delays. Temporary road closures possible. Gusty winds may limit visibility at times and down tree branches.
INSTRUCTION: Travel should be restricted to emergencies only. If you must travel, have a winter survival kit with you. If you get stranded, stay with your vehicle. Prepare for possible power outages. Slow down and use caution while traveling. Prepare for possible power outages. Monitor the latest forecasts for updates on this situation.
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Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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
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