Weather Alerts for California

Recent Locations: Appleton, WI   Pinch, WV   Indian Wells, CA  

1. Air Quality Alert for: Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains

2. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning

3. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

4. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains

5. Beach Hazards Statement for: Catalina and Santa Barbara Islands; Malibu Coast; Los Angeles County Beaches

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

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

8. Freeze Warning for: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

9. Freeze Watch for: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

10. Frost Advisory for: Southern Humboldt Interior; Southern Trinity

11. High Surf Advisory for: Ventura County Beaches

12. High Wind Warning for: Mojave Desert Slopes

13. High Wind Warning for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range

14. High Wind Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western Antelope Valley Foothills

15. Lake Wind Advisory for: Mono; Mineral and Southern Lyon Counties

16. Red Flag Warning for: North Bay Interior Mountains

17. Red Flag Warning for: Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Central Sacramento Valley including Glenn/Colusa/Yuba/Northern Sutter/Butte County Below 1000 Ft; Southern Sacramento Valley In Yolo/Sacramento/Far Western Placer/Southern Sutter and Solano County Below 1000 Ft - Excludes the Delta; Eastern Delta; Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft - Excludes the Delta; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Eastern Mendocino NF

18. Red Flag Warning for: San Joaquin Valley

19. Red Flag Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor

20. Red Flag Warning for: West Side Hills; Tehachapi Area; Fort Tejon

21. Special Weather Statement for: Surprise Valley California; Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Mono; Mineral and Southern Lyon Counties; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County

22. Wind Advisory for: Lake Casitas; Antelope Valley

23. 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

24. Wind Advisory for: Santa Barbara County Interior Mountains

25. Wind Advisory for: Santa Clarita Valley

26. Wind Advisory for: Santa Ynez Mountains Eastern Range

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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 Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Altostratus Clouds Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds