Weather Alerts for Alaska
1. Blizzard Warning for: Kivalina and Red Dog Dock; Baldwin Peninsula
2. Blizzard Warning for: Western Arctic Coast
3. Cold Weather Advisory for: City and Borough of Wrangell; Ketchikan Gateway Borough
4. Cold Weather Advisory for: Municipality of Skagway; Haines Borough and Klukwan; City and Borough of Juneau; Petersburg Borough; Western Kupreanof and Kuiu Island; City of Hyder; Annette Island
5. Winter Storm Warning for: Interior Seward Peninsula; Eastern Norton Sound and Nulato Hills
6. Winter Storm Warning for: Noatak Valley; Lower Kobuk Valley
7. Winter Storm Warning for: Northern Denali Borough
8. Winter Storm Warning for: South Slopes of the Western Brooks Range; Upper Kobuk Valleys
9. Winter Storm Warning for: Tanana Flats; Eielson AFB and Salcha
10. Winter Storm Warning for: Upper Koyukuk Valley
11. Winter Storm Warning for: White Mountains and High Terrain South of the Yukon River; Upper Chena River Valley; Goldstream Valley and Nenana Hills; Chatanika River Valley; Two Rivers; Fairbanks Metro Area; Nenana; Central Interior
12. Winter Weather Advisory for: Central Brooks Range
13. Winter Weather Advisory for: Lower Koyukuk Valley; Middle Yukon Valley
14. Winter Weather Advisory for: Lower Yukon River
15. Winter Weather Advisory for: Northern Seward Peninsula
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Current U.S. National Radar--Current
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National Weather Forecast for Tomorrow
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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 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
Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
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