Weather Alerts for California

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1. Fire Weather Watch for: Mono County, Eastern Alpine County

2. Freeze Watch for: Northeastern Mendocino Interior; Northwestern Mendocino Interior; Southeastern Mendocino Interior; Southwestern Mendocino Interior

3. High Surf Advisory for: San Luis Obispo County Central Coast; Santa Barbara County Central Coast

4. High Wind Watch for: Indian Wells Valley; Kern County Desert; Lake Isabella; Tehachapi Area

5. Lake Wind Advisory for: Greater Lake Tahoe Area

6. Special Weather Statement for: West Slope Northern Sierra Nevada; Western Plumas County, Lassen Park

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

8. Wind Advisory for: Central Sacramento Valley; Northern Sacramento Valley; Southern Sacramento Valley

9. Wind Advisory for: Chuckwalla Mountains; Imperial County West; Imperial Valley

10. Wind Advisory for: East Bay Hills and the Diablo Range; East Bay Interior Valleys; North Bay Mountains

11. Wind Advisory for: Eastern Sierra Slopes of Inyo County

12. Wind Advisory for: Imperial County Southwest

13. Wind Advisory for: Mono

14. Wind Advisory for: Northern Monterey Bay; San Francisco Peninsula Coast; Santa Cruz Mountains

15. Wind Advisory for: Owens Valley

16. Wind Advisory for: Western Mojave Desert

17. Winter Weather Advisory for: Central Sierra; North Kings River

18. Winter Weather Advisory for: Eastern Sierra Slopes of Inyo County

19. Winter Weather Advisory for: Greater Lake Tahoe Area

20. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties

21. Winter Weather Advisory for: Mono

22. Winter Weather Advisory for: West Slope Northern Sierra Nevada; Western Plumas County, Lassen Park

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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).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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.

North American Water Vapor Map

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

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