Weather Alerts for California
1. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley
2. Wind Advisory for: Apple and Lucerne Valleys; San Diego County Deserts; San Gorgonio Pass Near Banning
3. Wind Advisory for: Death Valley National Park; Western Mojave Desert
4. Wind Advisory for: Imperial County Southwest
5. Wind Advisory for: Imperial County West
6. Wind Advisory for: Imperial Valley
7. Wind Advisory for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
8. Wind Advisory for: Morongo Basin
9. Winter Weather Advisory for: Eastern Sierra Slopes of Inyo County
10. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
11. Winter Weather Advisory for: Mono
12. Winter Weather Advisory for: South End of the Upper Sierra; Piute Walker Basin; Tehachapi; Grapevine; Frazier Mountain Communities
13. Winter Weather Advisory for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
14. Winter Weather Advisory for: Yosemite NP outside of the valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP
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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 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
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