Weather Alerts for Alaska

Recent Locations: Nobleton, FL Delight, AR Anchor Point, AK

1. Blizzard Warning for: St Lawrence Island

2. Dense Fog Advisory for: City and Borough of Yakutat

3. High Surf Advisory for: SW Kenai Peninsula

4. Special Weather Statement for: Delta Junction; Tanana Flats; Eielson AFB and Salcha; Goldstream Valley and Nenana Hills; Fairbanks Metro Area; Nenana; Northern Denali Borough

5. Special Weather Statement for: Northern Seward Peninsula; Upper Kobuk Valleys; Shishmaref; Bering Strait Coast; Southern Seward Peninsula Coast; Interior Seward Peninsula; Lower Koyukuk Valley

6. Special Weather Statement for: South Slopes Of The Eastern Brooks Range; South Slopes Of The Central Brooks Range; Upper Koyukuk Valley; Yukon Flats

7. Special Weather Statement for: Thompson Pass

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

9. Wind Advisory for: Municipality of Skagway

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

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

12. Winter Storm Warning for: Lower Yukon and Innoko Valleys; Upper Kuskokwim Valley

13. Winter Storm Warning for: Middle Yukon Valley

14. Winter Storm Warning for: Yukon Delta Coast; Lower Yukon River

15. Winter Weather Advisory for: Dalton Highway Summits

16. Winter Weather Advisory for: Northern Copper Valley; Northern Susitna Valley

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

18. Winter Weather Advisory for: Southern Denali Borough

19. Winter Weather Advisory for: White Mountains and High Terrain South of the Yukon River; Upper Chena River Valley; Chatanika River Valley; Two Rivers; Central Interior

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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 Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

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