Weather Alerts for Alaska

Recent Locations: McAllen, TX Atkinson, NE Nightmute, AK

1. High Wind Warning for: City and Borough of Juneau

2. Special Weather Statement for: 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; City and Borough of Wrangell

3. Wind Advisory for: Municipality of Skagway

4. Winter Storm Warning for: Central Beaufort Sea Coast; Eastern Beaufort Sea Coast; Central Arctic Plains; Central Brooks Range; Romanzof Mountains

5. Winter Storm Warning for: Dalton Highway Summits; White Mountains and High Terrain South of the Yukon River

6. Winter Storm Warning for: Eastern Norton Sound and Nulato Hills; Lower Koyukuk Valley; Middle Yukon Valley

7. Winter Storm Warning for: Lower Kobuk Valley; Northern Seward Peninsula

8. Winter Storm Warning for: Northern Denali Borough

9. Winter Storm Warning for: Northwest Arctic Coast; Northern Arctic Coast; Western Arctic Plains; Howard Pass and the Delong Mountains

10. Winter Storm Warning for: South Slopes Of The Central Brooks Range; Upper Koyukuk Valley

11. Winter Storm Warning for: South Slopes of the Western Brooks Range; Upper Kobuk Valleys

12. Winter Storm Warning for: Southern Seward Peninsula Coast; Interior Seward Peninsula

13. Winter Storm Warning for: St Lawrence Island

14. Winter Storm Warning for: 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

15. Winter Storm Warning for: Yukon Delta Coast; Lower Yukon River; Lower Yukon and Innoko Valleys

16. Winter Weather Advisory for: Central Copper Valley; Tok Cutoff

17. Winter Weather Advisory for: Kuskokwim Valley West; Kuskokwim Delta Coast and Nunivak Island; Interior Kuskokwim Delta

18. Winter Weather Advisory for: Noatak Valley; Kivalina and Red Dog Dock; Baldwin Peninsula

19. Winter Weather Advisory for: North Slopes of the Western Alaska Range; Upper Kuskokwim Valley

20. Winter Weather Advisory for: Northern Alaska Peninsula; Bristol Bay Borough (Naknek and King Salmon); Lake Iliamna / Nila Vena / Nanvarpak

21. Winter Weather Advisory for: Shishmaref; Bering Strait Coast

22. Winter Weather Advisory for: Upper Tanana Valley; Delta Junction; Eastern Alaska Range North of Trims Camp

23. Winter Weather Advisory for: Western Capes

24. Winter Weather Advisory for: Yukon Flats; Fortymile Country

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds