Weather Alerts for Alaska
1. Blizzard Warning for: Lower Kobuk Valley; Baldwin Peninsula; Northern Seward Peninsula
2. Blizzard Warning for: Shishmaref; Bering Strait Coast
3. Blizzard Warning for: St Lawrence Island
4. Flood Watch for: Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley
5. Wind Advisory for: Eastern Alaska Range North of Trims Camp
6. Wind Advisory for: Northern Denali Borough
7. Winter Weather Advisory for: Central Brooks Range
8. Winter Weather Advisory for: Dalton Highway Summits
9. Winter Weather Advisory for: Southern Seward Peninsula Coast; Interior Seward Peninsula; Eastern Norton Sound and Nulato Hills
10. Winter Weather Advisory for: Western Arctic Coast
11. Winter Weather Advisory for: Yukon Delta Coast; Lower Yukon River
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Current U.S. National Radar--Current
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National Weather Forecast--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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