Weather Alerts for Alaska

Recent Locations: Three Lakes, WI Cayuga, TX Sand Point, AK

1. Special Weather Statement for: Lower Yukon River; Lower Yukon and Innoko Valleys; North Slopes of the Western Alaska Range; Upper Kuskokwim Valley

2. Special Weather Statement for: Northern Seward Peninsula; Southern Seward Peninsula Coast; Interior Seward Peninsula

3. Special Weather Statement for: South Slopes Of The Central Brooks Range; Upper Koyukuk Valley; Central Interior

4. Special Weather Statement for: Upper Kobuk Valleys; Lower Koyukuk Valley

5. Special Weather Statement for: 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; Northern Denali Borough

6. Wind Advisory for: Eastern Alaska Range North of Trims Camp

7. Winter Storm Warning for: Kuskokwim Delta Coast and Nunivak Island

8. Winter Storm Warning for: Yukon Delta Coast

9. Winter Storm Watch for: Dalton Highway Summits

10. Winter Storm Watch for: Eastern Alaska Range South of Trims Camp

11. Winter Storm Watch for: Eastern Norton Sound and Nulato Hills

12. Winter Storm Watch for: Middle Yukon Valley

13. Winter Storm Watch for: St Lawrence Island

14. Winter Weather Advisory for: Eastern Alaska Range South of Trims Camp

15. Winter Weather Advisory for: Kuskokwim Valley West; Kuskokwim Valley East; Lime Village; Interior Kuskokwim Delta

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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