Weather Alerts for California
1. Air Quality Alert for: Catalina and Santa Barbara Islands; Santa Clarita Valley; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; 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; Western San Fernando Valley; Eastern San Fernando Valley; Santa Susana Mountains; Los Angeles County San Gabriel Valley
2. Air Quality Alert for: Imperial Valley
3. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Santa Ana Mountains and Foothills; San Gorgonio Pass Near Banning; Orange County Coastal; Orange County Inland
4. Beach Hazards Statement for: San Diego County Coastal Areas
5. Beach Hazards Statement for: Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast
6. Flood Warning for: Mendocino, CA
7. High Surf Advisory for: Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast
8. High Surf Advisory for: Malibu Coast; Los Angeles County Beaches
9. High Surf Advisory for: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
10. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
11. High Surf Advisory for: Ventura County Beaches
12. High Wind Warning for: Mono; Mineral and Southern Lyon Counties; Greater Reno-Carson City-Minden Area
13. Wind Advisory for: Apple and Lucerne Valleys
14. Wind Advisory for: Central Siskiyou County; Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Curry County Coast; Central Douglas County; Eastern Curry County and Josephine County; Jackson County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
15. Wind Advisory for: Coastal Del Norte; Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
16. Wind Advisory for: Interstate 5 Corridor
17. Wind Advisory for: Northern Humboldt Coast
18. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley
19. Wind Advisory for: Santa Barbara County Interior Mountains
20. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range
21. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains
22. Wind Advisory for: Surprise Valley California; Northern Washoe County
23. Wind Advisory for: Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
24. Wind Advisory for: Western Mojave Desert
25. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
26. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
27. Winter Weather Advisory for: Mono
28. Winter Weather Advisory for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
29. Winter Weather Advisory for: Western Siskiyou County; South Central Siskiyou County; North Central and Southeast Siskiyou County; South Central Oregon Cascades; Siskiyou Mountains and Southern Oregon Cascades
30. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin 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 Freezing Rain?
Home - Education - Precipitation - Freezing Rain
Next Topic: Graupel
Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
