Weather Alerts for California
1. Avalanche Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
2. Flood Advisory for: Butte, CA
3. Flood Advisory for: Butte, CA; Colusa, CA; Glenn, CA; Placer, CA; Shasta, CA; Sutter, CA; Tehama, CA; Yolo, CA; Yuba, CA
4. Flood Advisory for: Lassen, CA
5. Flood Warning for: Butte, CA; Glenn, CA
6. Flood Warning for: Butte, CA; Glenn, CA
7. Flood Warning for: Lassen, CA
8. Flood Warning for: Lassen, CA
9. Flood Warning for: Mendocino, CA
10. Flood Warning for: Mendocino, CA
11. Flood Warning for: Modoc, CA
12. Flood Warning for: Sonoma, CA
13. Flood Warning for: Sonoma, CA
14. Flood Warning for: Tehama, CA
15. Flood Warning for: Tehama, CA
16. Flood Warning for: Tehama, CA
17. Flood Warning for: Tehama, CA
18. Flood Watch for: Mariposa Madera Foothills; Mariposa-Madera Lower Sierra
19. Flood Watch for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Northern San Joaquin Valley; Northeast Foothills/Sacramento Valley; Motherlode; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
20. Flood Watch for: Shasta Lake Area / Northern Shasta County; Mountains Southwestern Shasta County to Western Colusa County
21. Frost Advisory for: North Bay Interior Valleys
22. High Wind Warning for: San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Northern Ventura County Mountains
23. High Wind Warning for: Santa Lucia Mountains
24. Wind Advisory for: Cuyama Valley; Southern Ventura County Mountains
25. Wind Advisory for: Interstate 5 Corridor
26. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Southern Salinas Valley; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast
27. Wind Advisory for: Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area
28. Wind Advisory for: Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills
29. Winter Storm Warning for: Del Norte Interior
30. Winter Storm Warning for: Eastern Sierra Slopes of Inyo County
31. Winter Storm Warning for: Mono
32. Winter Storm Warning for: West Slope Northern Sierra Nevada
33. Winter Storm Warning for: Western Siskiyou County
34. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
35. Winter Storm Watch for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
36. Winter Storm Watch for: Lassen-Eastern Plumas-Eastern Sierra Counties
37. Winter Storm Watch for: Mono
38. Winter Weather Advisory for: Coastal Del Norte
39. Winter Weather Advisory for: Northern Humboldt Interior; Southern Humboldt Interior
40. Winter Weather Advisory for: Northern Trinity; Southern Trinity
41. Winter Weather Advisory for: South Central Siskiyou County
42. Winter Weather Advisory for: Southwestern Humboldt
43. Winter Weather Advisory for: Western Siskiyou County
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Current U.S. National Radar--Current
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National Weather Forecast--Current
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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 Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
Weather Topic: What are Mammatus Clouds?
Home - Education - Cloud Types - Mammatus Clouds
Next Topic: Nimbostratus Clouds
A mammatus cloud is a cloud with a unique feature which resembles
a web of pouches hanging along the base of the cloud.
In the United States, mammatus clouds tend to form in the warmer months, commonly
in the Midwest and eastern regions.
While they usually form at the bottom of a cumulonimbis cloud, they can also form
under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds
warn that severe weather is close.
Next Topic: Nimbostratus Clouds
