Weather Alerts for California

Recent Locations: Fort Collins, CO Pasadena, CA Hayward, CA

1. Beach Hazards Statement for: Coastal Del Norte; Northern Humboldt Coast; Southwestern Humboldt; Mendocino Coast

2. Beach Hazards Statement for: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

3. Dense Fog Advisory for: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Fresno-Clovis; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Buena Vista; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley

4. Dense Fog Advisory for: Northern San Joaquin Valley

5. High Surf Advisory for: San Francisco; Coastal North Bay Including Point Reyes National Seashore; San Francisco Peninsula Coast; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

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

7. High Surf Advisory for: Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast

8. High Surf Advisory for: Ventura County Beaches; Malibu Coast; Los Angeles County Beaches

9. Wind Advisory for: Grapevine; Frazier Mountain Communities; Mojave Desert Slopes

10. Wind Advisory for: San Bernardino and Riverside County Valleys-The Inland Empire; San Diego County Inland Valleys; San Bernardino County Mountains; Riverside County Mountains; Santa Ana Mountains and Foothills; San Diego County Mountains; San Gorgonio Pass Near Banning; Orange County Inland

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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).

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 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