Weather Alerts for California
1. Air Quality Alert for: Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
2. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning
3. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
4. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
5. Beach Hazards Statement for: Catalina and Santa Barbara Islands; Malibu Coast; Los Angeles County Beaches
6. Beach Hazards Statement for: San Diego County Coastal Areas; Orange County Coastal
7. Beach Hazards Statement for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
8. Freeze Warning for: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
9. Freeze Watch for: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
10. Frost Advisory for: Southern Humboldt Interior; Southern Trinity
11. High Surf Advisory for: Ventura County Beaches
12. High Wind Warning for: Mojave Desert Slopes
13. High Wind Warning for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
14. High Wind Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western Antelope Valley Foothills
15. Lake Wind Advisory for: Mono; Mineral and Southern Lyon Counties
16. Red Flag Warning for: North Bay Interior Mountains
17. Red Flag Warning for: Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Central Sacramento Valley including Glenn/Colusa/Yuba/Northern Sutter/Butte County Below 1000 Ft; Southern Sacramento Valley In Yolo/Sacramento/Far Western Placer/Southern Sutter and Solano County Below 1000 Ft - Excludes the Delta; Eastern Delta; Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft - Excludes the Delta; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Eastern Mendocino NF
18. Red Flag Warning for: San Joaquin Valley
19. Red Flag Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor
20. Red Flag Warning for: West Side Hills; Tehachapi Area; Fort Tejon
21. Special Weather Statement for: Surprise Valley California; Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Mono; Mineral and Southern Lyon Counties; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County
22. Wind Advisory for: Lake Casitas; Antelope Valley
23. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast
24. Wind Advisory for: Santa Barbara County Interior Mountains
25. Wind Advisory for: Santa Clarita Valley
26. Wind Advisory for: Santa Ynez Mountains Eastern Range
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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
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 Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
Weather Topic: What is Precipitation?
Home - Education - Precipitation - Precipitation
Next Topic: Rain
Precipitation can refer to many different forms of water that
may fall from clouds. Precipitation occurs after a cloud has become saturated to
the point where its water particles are more dense than the air below the cloud.
In most cases, precipitation will reach the ground, but it is not uncommon for
precipitation to evaporate before it reaches the earth's surface.
When precipitation evaporates before it contacts the ground it is called Virga.
Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog
and mist are not considered precipitation because the water vapor which
constitutes them isn't dense enough to fall to the ground.
Next Topic: Rain
