Weather Alerts for California

Recent Locations: Walnut, CA  

1. Excessive Heat Warning for: Antelope Valley

2. Excessive Heat Warning for: Apple and Lucerne Valleys

3. Excessive Heat Warning for: Bakersfield; Central Sierra Foothills; Eastern San Joaquin Valley in Kern County; Foggy Bottom; Fort Tejon; Fresno; Merced and Madera; San Joaquin Confluence; Southern Kings County; Southern Sierra Foothills; Tulare County; West Side Hills; Western San Joaquin Valley; Western San Joaquin Valley in Kern County

4. Excessive Heat Warning for: Cadiz Basin; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin; San Bernardino County-Upper Colorado River Valley; Western Mojave Desert

5. Excessive Heat Warning for: Central Sacramento Valley; Motherlode; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills, Sacramento Valley; Northern Sacramento Valley; Northern San Joaquin Valley; Shasta Lake Area, Northern Shasta County; West Slope Northern Sierra Nevada; Western Plumas County, Lassen Park

6. Excessive Heat Warning for: Central Siskiyou County; South Central Siskiyou County; Western Siskiyou County

7. Excessive Heat Warning for: Chiriaco Summit; Chuckwalla Valley; Joshua Tree NP East; Palo Verde Valley

8. Excessive Heat Warning for: Chuckwalla Mountains; Imperial County Southeast; Imperial County Southwest; Imperial County West; Imperial Valley; Salton Sea

9. Excessive Heat Warning for: Coachella Valley; San Diego County Deserts

10. Excessive Heat Warning for: Indian Wells Valley; Kern County Desert

11. Excessive Heat Warning for: Lake Isabella; Tehachapi Area

12. Excessive Heat Warning for: Owens Valley

13. Excessive Heat Warning for: Riverside County Mountains; San Bernardino County Mountains

14. Excessive Heat Warning for: San Bernardino and Riverside County Valleys-The Inland Empire

15. Excessive Heat Warning for: San Diego County Inland Valleys

16. Excessive Heat Warning for: San Diego County Mountains

17. Excessive Heat Warning for: San Gorgonio Pass Near Banning

18. Heat Advisory for: Northeastern Mendocino Interior; Northern Trinity; Southern Trinity

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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 is Fog?

Home - Education - Cloud Types - Fog

Fog Next Topic: Fractus Clouds

Fog is technically a type of stratus cloud, which lies along the ground and obscures visibility.

It is usually created when humidity in the air condenses into tiny water droplets. Because of this, some places are more prone to foggy weather, such as regions close to a body of water.

Fog is similar to mist; both are the appearance of water droplets suspended in the air, but fog is the term applied to the condition when visibility is less than 1 km.

Next Topic: Fractus Clouds

Weather Topic: What is Freezing Rain?

Home - Education - Precipitation - Freezing Rain

Freezing Rain Next Topic: Graupel

Freezing rain is a condition where precipitation which has fallen in the form of water droplets reaches temperatures which are below freezing and freezes upon coming into contact with surface objects. The result of this precipitation is a glaze of ice which can be damaging to plants and man-made structures. A severe onset of freezing rain which results in a very thick glaze of ice is known as an ice storm.

Next Topic: Graupel