Weather Alerts for California

Recent Locations: Collinsville, TX New Egypt, NJ Waterford, CA

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

2. Freeze Watch for: Western Siskiyou County

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

4. High Wind Warning for: Mojave Desert Slopes

6. High Wind Watch for: Santa Susana Mountains

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

8. Wind Advisory for: Central Siskiyou County

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

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

11. Wind Advisory for: Modoc County

12. 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

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

14. Wind Advisory for: Santa Susana Mountains

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

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

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

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

19. Wind Advisory for: Western Mojave Desert

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

21. Winter Weather Advisory for: Modoc County

22. Winter Weather Advisory for: Northern Trinity

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

24. Winter Weather Advisory for: Western Siskiyou County

25. 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

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 Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds

Weather Topic: What are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds