Weather Alerts for California

Recent Locations: San Francisco, CA  

1. Beach Hazards Statement for: Los Angeles County Beaches; Malibu Coast; Ventura County Beaches

2. Beach Hazards Statement for: Orange County Coastal; San Diego County Coastal Areas

3. Beach Hazards Statement for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches

4. Beach Hazards Statement for: Santa Barbara County Southeastern Coast; Santa Barbara County Southwestern Coast

5. Lake Wind Advisory for: Greater Lake Tahoe Area; Mono

6. Special Weather Statement for: Greater Lake Tahoe Area; Lassen-Eastern Plumas-Eastern Sierra Counties; Mono; Surprise Valley California

7. Wind Advisory for: Antelope Valley

8. Wind Advisory for: Apple and Lucerne Valleys; San Bernardino County Mountains

9. Wind Advisory for: Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin

10. Wind Advisory for: Imperial County Southwest

11. Wind Advisory for: Imperial County Southwest

12. Wind Advisory for: Imperial County Southwest

13. Wind Advisory for: Imperial County West; Imperial Valley; Salton Sea

14. Wind Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties

15. Wind Advisory for: Modoc County; Northeast Siskiyou and Northwest Modoc Counties

16. Wind Advisory for: Riverside County Mountains; San Diego County Deserts; San Diego County Mountains; San Gorgonio Pass Near Banning

17. Wind Advisory for: Surprise Valley California

18. Wind Advisory for: Western Mojave Desert

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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 Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds

Weather Topic: What is Drizzle?

Home - Education - Precipitation - Drizzle

Drizzle Next Topic: Evaporation

Drizzle is precipitation in the form of water droplets which are smaller than raindrops.

Drizzle is characterized by fine, gently falling droplets and typically does not impact human habitation in a negative way. The exception to this is freezing drizzle, a condition where drizzle freezes immediately upon reaching earth's surface. Freezing drizzle is still less dangerous than freezing rain, but can potentially result in hazardous road conditions.

Next Topic: Evaporation