Weather Alerts for California

Recent Locations: Chowchilla, CA  

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

2. High Surf Advisory for: Ventura County Beaches

3. High Wind Watch for: Santa Lucia Mountains; San Luis Obispo County Mountains

4. Lake Wind Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area; Western Nevada Basin and Range including Pyramid Lake

5. Wind Advisory for: Death Valley National Park; Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Western Clark and Southern Nye County; Spring Mountains-Red Rock Canyon; Las Vegas Valley; Southern Clark County

6. Wind Advisory for: Eastern Sierra Slopes of Inyo County; Owens Valley

7. Wind Advisory for: Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

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

9. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast

10. Wind Advisory for: Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park; Southern Monterey Bay and Big Sur Coast

11. Wind Advisory for: Southern Salinas Valley; San Luis Obispo County Interior Valleys

12. Winter Storm Warning for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

13. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Northern Trinity; Southern Trinity

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

15. Winter Weather Advisory for: Mono

16. Winter Weather Advisory for: South Central Siskiyou County; North Central and Southeast Siskiyou County

17. Winter Weather Advisory for: Western Siskiyou County

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

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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