Weather Alerts for California

Recent Locations: Hartford, AR   Cartersville, VA   San Francisco, CA  
Current Alerts for San Francisco, CA: Cold Weather Advisory

1. Air Quality Alert for: Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial 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: Coastal Del Norte; Southwestern Humboldt

5. Cold Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior

6. 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

7. Cold Weather Advisory for: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra; Yosemite NP outside of the 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

8. Cold Weather Advisory for: Northern Humboldt Coast; Mendocino Coast; Southwestern Mendocino Interior; Southeastern Mendocino Interior; Southern Lake County

9. Cold Weather Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley

10. Cold Weather Advisory for: Northern Trinity; Southern Trinity; Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County

11. Cold Weather Advisory for: Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Mountains Southwestern Shasta County to Western Colusa County; Northeast Foothills/Sacramento Valley; Motherlode; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada

12. Cold Weather Advisory for: Western Siskiyou County; Central Siskiyou County; South Central Siskiyou County

13. 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

14. Freeze Warning for: Carquinez Strait and Delta; Northern San Joaquin Valley

15. Freeze Warning 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

16. Freeze Warning for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley

17. Frost Advisory for: Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley

18. Frost Advisory for: Santa Clarita Valley; Lake Casitas; Ojai Valley; Central Ventura County Valleys; Calabasas and Agoura Hills; Southeastern Ventura County Valleys

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

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

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

22. High Surf Advisory for: Ventura County Beaches

23. Hydrologic Outlook for: Siskiyou, CA; Coos, OR; Curry, OR; Josephine, OR

24. Wind Advisory for: Apple and Lucerne Valleys

25. Wind Advisory for: Coachella Valley

26. Wind Advisory for: Coastal Del Norte; Southwestern Humboldt

27. Wind Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior

28. Wind Advisory for: Imperial County Southwest

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

30. Wind Advisory for: Mojave Desert Slopes

31. Wind Advisory for: Morongo Basin

32. Wind Advisory for: San Diego County Deserts

33. Wind Advisory for: San Gorgonio Pass Near Banning

34. Wind Advisory for: Western Mojave Desert

35. Winter Storm Warning for: Grapevine

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

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

38. Winter Storm Warning for: Riverside County Mountains

39. Winter Storm Warning for: San Bernardino County Mountains

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

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

42. Winter Storm Watch for: Northern Trinity

43. Winter Storm Watch for: Western Siskiyou County; South Central Siskiyou County; North Central and Southeast Siskiyou County

44. Winter Weather Advisory for: San Diego County Mountains

45. 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!

Want to Receive our Free Daily Forecast Emails in your inbox by 5 a.m.?
There are no ads! Learn More
We respect your privacy and will not share or sell your email with anyone.

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 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

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Cirrostratus Clouds Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Current conditions powered by WeatherAPI.com