Weather Alert in Alaska
Winter Weather Advisory issued February 22 at 1:47PM AKST until February 24 at 4:00PM AKST by NWS Anchorage AK
AREAS AFFECTED: Central Copper Valley; Tok Cutoff
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 3 and 7 inches for the Glennallen area and 6 to 13 inches along the Tok Cutoff. * WHERE...Central Copper Valley and Tok Cutoff, including Glennallen, Gakona, Chistochina, and Slana. * WHEN...From noon Monday to 4 PM AKST Tuesday. * IMPACTS...Travel could be very difficult. Visibility reduced to one half mile or less at times. * ADDITIONAL DETAILS...Steady light snow will develop early Monday afternoon and quickly intensify through the afternoon hours. The heaviest snow is expected along the Tok Cutoff from around Chistochina to Slana Monday afternoon through Monday night. Snow will gradually taper off during the day Tuesday. However, gusty northwest to northeast winds will develop and lead to reduced visibilities as the freshly fallen snow is lofted and blown around. The gusty winds and blowing snow will likely continue through Tuesday night.
INSTRUCTION: Slow down and use caution while traveling. For the latest road conditions call 5 1 1 or visit 511.alaska.gov.
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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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