Weather Alert in Alaska
Winter Weather Advisory issued February 28 at 5:49AM AKST until February 28 at 9:00PM AKST by NWS Juneau AK
AREAS AFFECTED: Admiralty Island; Western Kupreanof and Kuiu Island; Prince of Wales Island
DESCRIPTION: ...CENTRAL AND SOUTHERN PANHANDLE SNOW SATURDAY WITH POTENTIAL FOR MORE SNOW SUNDAY... Snowfall has increased in intensity and coverage overnight as a low tracks eastward across the Gulf towards the central panhandle. An estimated 2 to 4 inches has fallen overnight, these accumulations are separate from the next system set to affect the area through Saturday. Steady snowfall will continue through Saturday morning with rates increasing through the afternoon. Heaviest snowfall rates are expected to start by mid day along the coast, spreading eastward towards Hyder through Saturday night. As the low center tracks eastward through Saturday afternoon and evening, south to southwest wind will cause temperatures to warm over the southern outer coast with a mix or change to rain. Snow will then end on the NW side of the low, from Sitka to Juneau northward. Moisture will decrease overnight Saturday across the south, but then redevelop on Sunday as another system moves in. The rain/snow line will likely hover in vicinity of Sumner Strait Sunday into Monday with potential additional heavy snow for the Petersburg and Wrangell areas and lighter snow northward. A separate low pressure system looks to affect the region on Tuesday with potential for snow to push northward again. * WHAT...Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 35 mph. * WHERE...Admiralty Island, Western Kupreanof Island and Kuiu Island, Port Alexander, and Prince of Wales Island. * WHEN...Until 9 PM AKST Saturday. * IMPACTS...Travel could be difficult. * ADDITIONAL DETAILS...Heaviest snowfall rates expected Saturday afternoon.
INSTRUCTION: Slow down and use caution while traveling. People are urged to prepare their property before the onset of winter weather. For the latest road conditions, where available, 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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