Weather Alerts for California
1. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Inland
2. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Inland
3. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Inland
4. Air Quality Alert for: Santa Clarita Valley; Los Angeles County Inland Coast including Downtown Los Angeles; Western San Fernando Valley; Eastern San Fernando Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
5. Air Quality Alert for: Santa Susana Mountains
6. Excessive Heat Warning for: Cuyama Valley; Santa Clarita Valley; Santa Barbara County Interior Mountains; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley
7. Excessive Heat Warning for: Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills
8. Excessive Heat Warning for: Orange County Inland
9. Excessive Heat Warning for: San Bernardino and Riverside County Valleys-The Inland Empire
10. Excessive Heat Warning for: San Diego County Inland Valleys
11. Excessive Heat Warning for: Santa Ana Mountains and Foothills
12. Excessive Heat Warning for: Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
13. Excessive Heat Warning for: Western San Fernando Valley
14. Heat Advisory for: Orange County Coastal
15. Heat Advisory for: San Diego County Coastal Areas
16. Heat Advisory for: Santa Barbara County Southeastern Coast; Ventura County Inland Coast
17. Heat Advisory for: Santa Barbara County Southwestern Coast
18. Red Flag Warning for: Eastern Antelope Valley Foothills; Antelope Valley
19. Red Flag Warning for: Santa Barbara County Interior Mountains; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills
20. Red Flag Warning for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
21. Special Weather Statement for: Chuckwalla Valley
22. Wind Advisory for: Santa Barbara County Southwestern Coast
23. Wind Advisory for: Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
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Current U.S. National Radar--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
