Weather Alerts for Alaska

Recent Locations: Hima, KY Monroe, LA Nightmute, AK

1. Cold Weather Advisory for: Municipality of Skagway

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

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: Kuskokwim Valley West; Kuskokwim Delta Coast and Nunivak Island; Interior Kuskokwim Delta

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

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

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

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

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

22. Winter Weather Advisory for: Western Capes

23. 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 Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds