Weather Alerts for California
1. Avalanche Warning for: South Central Siskiyou County
2. Beach Hazards Statement for: Northern Monterey Bay
3. Flood Advisory for: Alameda, CA; Contra Costa, CA; Marin, CA
4. Flood Advisory for: Humboldt, CA
5. Flood Advisory for: Humboldt, CA; Mendocino, CA; Trinity, CA
6. Flood Advisory for: Lassen, CA; Plumas, CA; Sierra, CA
7. Flood Advisory for: Marin, CA; Sonoma, CA
8. Flood Advisory for: Napa, CA; Sonoma, CA
9. Flood Advisory for: Napa, CA; Sonoma, CA
10. Flood Advisory for: Sonoma, CA
11. Flood Warning for: Siskiyou, CA
12. Flood Warning for: Siskiyou, CA; Coos, OR; Curry, OR; Jackson, OR; Josephine, OR
13. Flood Watch for: Coastal Del Norte; Del Norte Interior
14. Flood Watch for: Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys
15. Flood Watch for: Mendocino Coast; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Southwestern Mendocino Interior; Southeastern Mendocino Interior
16. Flood Watch for: Northern Humboldt Coast; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
17. Flood Watch for: Northern Lake County; Southern Lake County
18. Flood Watch for: Shasta Lake Area / Northern Shasta County; Northern Sacramento Valley; Central Sacramento Valley; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley
19. Flood Watch for: Southern Trinity
20. Frost Advisory for: Ojai Valley; Calabasas and Agoura Hills
21. High Surf Advisory for: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Southern Monterey Bay and Big Sur Coast
22. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
23. High Wind Warning for: Central Siskiyou County
24. High Wind 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
25. High Wind Watch for: Coastal Del Norte; Del Norte Interior; Northern Humboldt Coast; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior
26. Lake Wind Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
27. Wind Advisory for: Mendocino Coast
28. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Northeast Foothills/Sacramento Valley
29. Wind Advisory for: San Francisco; Marin Coastal Range; Sonoma Coastal Range; North Bay Interior Mountains; Coastal North Bay Including Point Reyes National Seashore; North Bay Interior Valleys; San Francisco Bay Shoreline; San Francisco Peninsula Coast
30. Winter Storm Warning for: Burney Basin / Eastern Shasta County; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
31. Winter Storm Warning for: Northern Trinity
32. Winter Weather Advisory for: South Central Siskiyou County; North Central and Southeast Siskiyou County
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Current U.S. National Radar--Current
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National Weather Forecast--Current
The Current National Weather Forecast and National Weather Map are shown below.
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 Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
Next Topic: Cirrostratus Clouds
Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
