Weather Alert in Alaska
Winter Storm Warning issued February 23 at 9:19PM AKST until February 25 at 6:00AM AKST by NWS Fairbanks AK
AREAS AFFECTED: Upper Chena River Valley; Tanana Flats; Eielson AFB and Salcha; Goldstream Valley and Nenana Hills; Chatanika River Valley; Two Rivers; Fairbanks Metro Area; Nenana; Central Interior
DESCRIPTION: * WHAT...Heavy snow. Additional snow accumulations between 3 and 6 inches. * WHERE...Central Interior, Nenana, Fairbanks North Star Borough * WHEN...Until 6 AM AKST Wednesday. * IMPACTS...Travel could be very difficult. * ADDITIONAL DETAILS...Westerly winds strengthen through the Tanana Valley Tuesday which may lead to periods of blowing snow. Increased snow on frozen rivers and streams could lead to areas of overflow. Use caution while traveling on and along frozen waterways.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Visit 511.alaska.gov or call 5 1 1 for the latest road conditions.
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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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