Weather Alerts for Alaska
1. Flood Advisory for: Northern Denali Borough
2. Flood Advisory for: Upper Kobuk Valleys
3. Flood Advisory for: Valdez
4. Flood Advisory for: Western Susitna Valley; Central Susitna Valley
5. Flood Warning for: Upper Koyukuk Valley
6. Flood Warning for: Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley
7. Flood Watch for: South Slopes of the Western Brooks Range; Noatak Valley; Upper Kobuk Valleys; Lower Koyukuk Valley; Upper Koyukuk Valley
8. Flood Watch for: Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley; Northern Susitna Valley
9. Heat Advisory for: Prince of Wales Island; Ketchikan Gateway Borough; City of Hyder; Annette Island
10. Hydrologic Outlook for: Anchorage; Anchorage Hillside / Eagle River; East Turnagain Arm; Portage; Lower Matanuska Valley; Hatcher Pass; Sutton / Upper Matanuska Valley; Eureka / Tahneta Pass; Southern Kachemak Bay; SW Kenai Peninsula; NW Kenai Peninsula; Skilak Lake; Southern Kenai Mtns; Interior Kenai Peninsula; Turnagain Pass; West Prince William Sound & Whittier; Tyonek; Valdez; Thompson Pass; Cordova; Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley; Northern Susitna Valley
11. Hydrologic Outlook for: Kuskokwim Valley West; Kuskokwim Valley East; Interior Kuskokwim Delta; Western Capes; Northern Bristol Bay Coast; Inland Bristol Bay
12. Hydrologic Outlook for: Northern Denali Borough
13. Hydrologic Outlook for: South Slopes Of The Central Brooks Range; South Slopes of the Western Brooks Range; Noatak Valley; Lower Kobuk Valley; Upper Kobuk Valleys; Lower Koyukuk Valley; Upper Koyukuk Valley
14. Hydrologic Outlook for: South Slopes Of The Central Brooks Range; South Slopes of the Western Brooks Range; Noatak Valley; Lower Kobuk Valley; Upper Kobuk Valleys; Lower Koyukuk Valley; Upper Koyukuk Valley
15. Special Weather Statement for: Northern Copper Valley; Western Copper Valley; Central Copper Valley; Ernestine; Southern Copper Valley
16. Special Weather Statement for: Southern Kachemak Bay; SW Kenai Peninsula; NW Kenai Peninsula
17. Wind Advisory for: Dalton Highway Summits; Yukon Flats; White Mountains and High Terrain South of the Yukon River; 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
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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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