Weather Alert in Alaska
Special Weather Statement issued September 11 at 7:13PM AKDT by NWS Juneau AK
AREAS AFFECTED: City and Borough of Yakutat; Municipality of Skagway; Haines Borough and Klukwan; Glacier Bay; Eastern Chichagof Island; Cape Fairweather to Lisianski Strait; City and Borough of Sitka; Admiralty Island; City and Borough of Juneau; Petersburg Borough; Western Kupreanof and Kuiu Island; Prince of Wales Island; City and Borough of Wrangell; Ketchikan Gateway Borough; City of Hyder; Annette Island
DESCRIPTION: Forecast confidence is increasing of another wet front pushing into the panhandle by early next week. Current forecast rainfall amounts are around 2 to 4 inches for many locations Monday through Wednesday, with locally higher amounts at the upper elevations. Freezing levels will still be high, around 6000 ft, but not as high as the previous mid week system. Due to this heavy rainfall and elevated snow levels, in combination with already saturated soils from previous rainfall, rises in area rivers and streams are expected. Stay tuned for updates on this next system through the weekend or visit weather.gov/juneau.
INSTRUCTION: N/A
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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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