Weather Alerts for California

Recent Locations: Huntsville, MO Hinton, OK Mendocino, CA

Current Alerts for Mendocino, CA: Frost Advisory

1. Air Quality Alert for: Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley; Palo Verde Valley

2. Air Quality Alert for: San Bernardino and Riverside County Valleys-The Inland Empire; Riverside County Mountains; Coachella Valley; San Gorgonio Pass Near Banning

3. Frost Advisory for: Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County

4. High Wind Warning for: Malibu Coast; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area

5. High Wind Warning for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor

6. High Wind Warning for: Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

7. Wind Advisory for: Apple and Lucerne Valleys; San Gorgonio Pass Near Banning

8. Wind Advisory for: Catalina and Santa Barbara Islands; Los Angeles County Beaches; Palos Verdes Hills

9. Wind Advisory for: Coachella Valley

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

11. Wind Advisory for: Joshua Tree NP West; Joshua Tree NP East; Chuckwalla Mountains; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley

12. Wind Advisory for: Owens Valley; White Mountains of Inyo County; Death Valley National Park; Morongo Basin; Lincoln County; Western Clark and Southern Nye County

13. Wind Advisory for: Piute Walker Basin; Tehachapi; Mojave Desert Slopes

14. Wind Advisory for: San Bernardino and Riverside County Valleys-The Inland Empire; Santa Ana Mountains and Foothills; Orange County Inland

15. Wind Advisory for: San Bernardino County Mountains

16. Wind Advisory for: Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast

17. Wind Advisory for: Santa Barbara County Southeastern Coast; Lake Casitas; Ojai Valley

18. Wind Advisory for: Santa Clarita Valley; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains

19. Wind Advisory for: Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley

20. Wind Advisory for: Western Mojave Desert

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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 is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet