Weather Alerts for California

Recent Locations: Moncks Corner, SC Moore, ID Hume, CA

Current Alerts for Hume, CA: Freeze Watch Winter Storm Warning

1. Air Quality Alert for: Coachella Valley

2. Avalanche Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

3. Beach Hazards Statement for: Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast

4. Cold Weather Advisory for: Marin Coastal Range; Sonoma Coastal Range; Coastal North Bay Including Point Reyes National Seashore; San Francisco Bay Shoreline; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Northern Salinas Valley/Hollister Valley and Carmel Valley; Northern Monterey Bay

5. Extreme Cold Warning for: North Bay Interior Mountains; North Bay Interior Valleys; East Bay Interior Valleys; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

6. Freeze Watch for: Los Banos - Dos Palos; Merced - Madera - Mendota; Planada - Le Grand - Snelling; Coalinga - Avenal; 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; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley

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

8. High Surf Advisory for: San Diego County Coastal Areas; Orange County Coastal

9. 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

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

11. High Surf Advisory for: Ventura County Beaches

12. High Wind Warning for: Cuyama Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Antelope Valley

13. Wind Advisory for: Apple and Lucerne Valleys

14. Wind Advisory for: Catalina and Santa Barbara Islands; Santa Clarita Valley; San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Ventura County Beaches; Ventura County Inland Coast; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Malibu Coast; Los Angeles County Beaches; Palos Verdes Hills; Los Angeles County Inland Coast including Downtown Los Angeles; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Calabasas and Agoura Hills; Western San Fernando Valley; Eastern San Fernando Valley; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Los Angeles County San Gabriel Valley

15. Wind Advisory for: Coachella Valley

16. Wind Advisory for: Indian Wells Valley; Mojave Desert

17. Wind Advisory for: Mojave Desert Slopes

18. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley

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

20. Wind Advisory for: San Diego County Deserts

21. Wind Advisory for: San Gorgonio Pass Near Banning

22. Wind Advisory for: Western Mojave Desert

23. Winter Storm Warning for: Grapevine

24. Winter Storm Warning for: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the valley; Yosemite Valley; San Joaquin River Canyon; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra

25. Winter Storm Warning for: Northern Ventura County Mountains; Eastern San Gabriel Mountains

26. Winter Storm Warning for: Piute Walker Basin; Tehachapi; Frazier Mountain Communities

27. Winter Storm Warning for: Riverside County Mountains

28. Winter Storm Warning for: San Bernardino County Mountains

29. Winter Storm Warning for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Interstate 5 Corridor

30. Winter Storm Warning for: Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Northern Sacramento Valley; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley; Motherlode; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

31. Winter Storm Warning for: South Central Siskiyou County; North Central and Southeast Siskiyou County

32. Winter Storm Warning for: Western San Gabriel Mountains and Highway 14 Corridor; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills

33. Winter Storm Warning for: Western Siskiyou County

34. Winter Weather Advisory for: Central Siskiyou County

35. Winter Weather Advisory for: Eastern Mojave Desert, Including the Mojave National Preserve

36. Winter Weather Advisory for: Eastern Sierra Slopes of Inyo County

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

38. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties

39. Winter Weather Advisory for: Modoc County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

40. Winter Weather Advisory for: Mono

41. Winter Weather Advisory for: Northeast Siskiyou and Northwest Modoc Counties; Klamath Basin

42. Winter Weather Advisory for: San Diego County Mountains

43. Winter Weather Advisory for: Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

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 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

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