Weather Alerts for Alaska

Recent Locations: Saint Martinville, LA Roscoe, IL Sand Point, AK

1. Cold Weather Advisory for: Kuskokwim Valley West; Kuskokwim Valley East; Lime Village

2. Cold Weather Advisory for: North Slopes of the Western Alaska Range

3. Cold Weather Advisory for: Southern Denali Borough; Eastern Alaska Range South of Trims Camp

4. Cold Weather Advisory for: Southern Kenai Mtns

5. Cold Weather Advisory for: Sutton / Upper Matanuska Valley; Eureka / Tahneta Pass; West Prince William Sound & Whittier; Northern Copper Valley; Western Copper Valley; Central Copper Valley; Ernestine; Northern Susitna Valley; Southern Copper Valley; Tok Cutoff; McCarthy

6. Cold Weather Advisory for: Upper Tanana Valley

7. High Wind Warning for: Kodiak Island Northeast

8. High Wind Warning for: Southern Kenai Mtns

9. High Wind Warning for: Thompson Pass

10. Special Weather Statement for: Central Aleutians

11. Wind Advisory for: Valdez

12. Winter Weather Advisory for: Cape Fairweather to Lisianski Strait

13. Winter Weather Advisory for: City and Borough of Juneau

14. Winter Weather Advisory for: City and Borough of Sitka; Prince of Wales Island

15. Winter Weather Advisory for: Municipality of Skagway

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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 are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle

Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog