Weather Alerts for California
1. Frost Advisory for: 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
2. High Wind Warning for: Mojave Desert Slopes
3. High Wind Watch for: Coastal Del Norte
4. Wind Advisory for: Apple and Lucerne Valleys
5. Wind Advisory for: Central Siskiyou County
6. Wind Advisory for: Coastal Del Norte
7. Wind Advisory for: Imperial County Southwest
8. Wind Advisory for: Indian Wells Valley; Mojave Desert
9. Wind Advisory for: Morongo Basin
10. Wind Advisory for: Northern Humboldt Coast; Southwestern Humboldt; Southern Humboldt Interior
11. Wind Advisory for: San Diego County Deserts
12. Wind Advisory for: San Gorgonio Pass Near Banning
13. Wind Advisory for: Western Mojave Desert
14. Winter Storm Warning for: Northeast Foothills/Sacramento Valley
15. Winter Storm Warning for: Northern Trinity; Southern Trinity
16. Winter Storm Warning for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills
17. Winter Storm Warning for: Shasta Lake Area / Northern Shasta County; Burney Basin / Eastern Shasta County; Mountains Southwestern Shasta County to Western Colusa County; Western Plumas County/Lassen Park
18. Winter Storm Warning for: South Central Siskiyou County; North Central and Southeast Siskiyou County
19. Winter Storm Warning for: West Slope Northern Sierra Nevada
20. Winter Storm Warning for: Western Siskiyou County
21. Winter Storm Warning for: 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
22. Winter Weather Advisory for: Central Siskiyou County
23. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior
24. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
25. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
26. Winter Weather Advisory for: Mariposa-Madera Lower Sierra; Fresno-Tulare Lower Sierra; South End of the Lower Sierra
27. Winter Weather Advisory for: Mono
28. Winter Weather Advisory for: Northeastern Mendocino Interior; Northern Lake County
29. Winter Weather Advisory for: Northwestern Mendocino Interior; Southern Lake County
30. Winter Weather Advisory for: Piute Walker Basin; Tehachapi; Grapevine; Frazier Mountain Communities
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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 Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
Weather Topic: What is Fog?
Home - Education - Cloud Types - 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