Weather Alert in California
Winter Weather Advisory issued February 17 at 3:00PM PST until February 18 at 4:00PM PST by NWS Eureka CA
AREAS AFFECTED: Coastal Del Norte; Northern Humboldt Coast
DESCRIPTION: ...PERIODS OF RAIN AND SNOW SHOWERS WILL CONTINUE THROUGH THURSDAY MORNING... .Rain, snow and small hail showers are expected to diminish tonight and Wednesday with another round of low snow, rain and small hail Wednesday night evening through early Thursday morning. * WHAT...Widespread small hail showers are occurring, resulting in ice accumulation and extremely slippery driving conditions. Conditions may rapidly change from rain to hail. Snow levels may briefly drop to 500 feet overnight. * WHERE...Del Norte and Northern Humboldt Coast. * WHEN...Until 4 PM PST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous due to small hail. Plan on slippery road conditions. The hazardous conditions will impact the Tuesday evening and Wednesday morning commutes.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. Dark clouds ahead may indicate showers containing small hail. Slow down and allow extra time if driving.
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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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