Weather Alerts for California

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

2. Coastal Flood Advisory for: Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast

3. Coastal Flood Advisory for: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline

4. Flood Advisory for: Monterey, CA; San Benito, CA; Santa Clara, CA; Santa Cruz, CA

5. Flood Advisory for: San Luis Obispo, CA

6. Flood Advisory for: San Luis Obispo, CA

7. Flood Advisory for: Santa Barbara, CA

8. Flood Watch for: Catalina and Santa Barbara Islands; Santa Clarita Valley; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Santa Barbara County Interior Mountains; 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; Northern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Los Angeles County San Gabriel Valley; San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands

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

10. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Malibu Coast; Los Angeles County 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; Southern Ventura County Mountains; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills

13. High Wind Warning for: San Miguel and Santa Rosa Islands; Santa Cruz and Anacapa Islands

14. Severe Thunderstorm Warning for: Santa Barbara, CA

15. Special Weather Statement for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Interior Mountains

16. Wind Advisory for: Apple and Lucerne Valleys

17. Wind Advisory for: Apple and Lucerne Valleys

18. Wind Advisory for: Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Bakersfield; Southeast San Joaquin Valley; South End San Joaquin Valley

19. 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; 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; Antelope Valley; Los Angeles County San Gabriel Valley

20. Wind Advisory for: Imperial County Southwest

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

22. Wind Advisory for: Owens Valley; Death Valley National Park

23. 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

24. 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

25. Wind Advisory for: San Diego County Deserts

26. Wind Advisory for: San Diego County Deserts

27. Wind Advisory for: San Diego County Mountains

28. Wind Advisory for: San Diego County Mountains

29. Wind Advisory for: San Gorgonio Pass Near Banning

30. Wind Advisory for: San Gorgonio Pass Near Banning

31. Wind 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; Northern Salinas Valley/Hollister Valley and Carmel Valley; Southern Monterey Bay and Big Sur Coast

32. Wind Advisory for: West Side Mountains north of 198; West Side Mountains South of 198; Buena Vista; Indian Wells Valley; Mojave Desert Slopes; Mojave Desert

33. Winter Storm Warning for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior

34. Winter Storm Warning for: Eastern Sierra Slopes of Inyo County

35. Winter Storm Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

36. Winter Storm Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties

37. 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

38. Winter Storm Warning for: Mono

39. Winter Storm Warning for: Northern Trinity; Southern Trinity

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

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

42. Winter Storm Warning for: San Bernardino County Mountains; Riverside County Mountains

43. Winter Storm Warning 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

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

45. Winter Storm Warning for: Southwestern Humboldt

46. Winter Storm Warning for: Western Siskiyou County

47. Winter Storm Warning for: White Mountains of Inyo County

48. Winter Storm Watch for: Grapevine

49. Winter Storm Watch for: Owens Valley

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

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

52. Winter Weather Advisory for: Central Siskiyou County

53. Winter Weather Advisory for: Coastal Del Norte; Northern Humboldt Coast

54. Winter Weather Advisory 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

55. Winter Weather Advisory for: Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County

56. 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

57. Winter Weather Advisory for: Surprise Valley California

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Current U.S. National Radar--Current

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North America Water Vapor (Moisture)

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Weather Topic: What is Evaporation?

Home - Education - Precipitation - Evaporation

Evaporation Next Topic: Fog

Evaporation is the process which returns water from the earth back to the atmosphere, and is another crucial process in the water cycle.

Evaporation is the transformation of liquid into gas, and it happens because molecules are excited by the application of energy and turn into vapor. In order for water to evaporate it has to be on the surface of a body of water.

Next Topic: Fog

Weather Topic: What are Fractus Clouds?

Home - Education - Cloud Types - Fractus Clouds

Fractus Clouds Next Topic: Freezing Rain

A fractus cloud (scud) is a fragmented, tattered cloud which has likely been sheared off of another cloud. They are accessory clouds, meaning they develop from parent clouds, and are named in a way which describes the original cloud which contained them.

Fractus clouds which have originated from cumulus clouds are referred to as cumulus fractus, while fractus clouds which have originated from stratus clouds are referred to as stratus fractus. Under certain conditions a fractus cloud might merge with another cloud, or develop into a cumulus cloud, but usually a fractus cloud seen by itself will dissipate rapidly.

They are often observed on the leading and trailing edges of storm clouds, and are a display of wind activity.

Next Topic: Freezing Rain

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