Weather Alerts for California

Recent Locations: Clyo, GA Weaver, AL Stevinson, CA

1. Air Quality Alert for: Coachella Valley

2. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley

3. Air Quality Alert for: Los Angeles County San Gabriel Valley

4. Freeze Watch for: Western Siskiyou County

5. High Wind Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties

6. High Wind Warning for: Mojave Desert Slopes

7. High Wind Warning for: Mono

8. High Wind Watch for: Santa Susana Mountains

9. High Wind Watch for: Western Santa Monica Mountains Recreational Area; Western San Gabriel Mountains and Highway 14 Corridor

10. Wind Advisory for: Central Siskiyou County

11. Wind Advisory for: Coastal Del Norte; Del Norte Interior

12. Wind Advisory for: Indian Wells Valley; Mojave Desert

13. Wind Advisory for: Modoc County

14. Wind Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning

15. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range

16. Wind Advisory for: Santa Susana Mountains

17. Wind Advisory for: Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains

18. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor

19. Wind Advisory for: Surprise Valley California; Northern Washoe County

20. Wind Advisory for: Western Antelope Valley Foothills; Antelope Valley

21. Wind Advisory for: Western Mojave Desert

22. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

23. Winter Weather Advisory for: Modoc County

24. Winter Weather Advisory for: Northern Trinity

25. Winter Weather Advisory for: West Slope Northern Sierra Nevada

26. Winter Weather Advisory for: Western Siskiyou County

27. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

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