Weather Alert in California
Winter Storm Watch issued February 13 at 11:02PM PST until February 18 at 10:00AM PST by NWS Eureka CA
AREAS AFFECTED: Northern Trinity; Southern Trinity
DESCRIPTION: * WHAT...Heavy snow possible. Total snow accumulation between 6 to 10 inches possible above 2000 feet. Total snow accumulations between 1 and 2.5 feet possible for elevations above 3000 feet. * WHERE...Trinity County. * WHEN...From Sunday morning through Wednesday morning. * IMPACTS...Travel could be very difficult to impossible. Tire chains may be necessary if travelling through mountain passes. * ADDITIONAL DETAILS...Snow levels will remain above 4500 feet Sunday through Monday, dropping to 2000 feet Monday night into Tuesday. There is a potential for snow levels as low as 1500 feet with the heaviest snowfall. The heaviest snowfall rates are expected late Monday through Tuesday morning.
INSTRUCTION: 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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