Weather Alerts for California

Recent Locations: Castaic, CA   Mojave, CA   Newhall, CA  
Current Alerts for Newhall, CA: High Surf Advisory Wind Advisory

1. Avalanche Warning for: Eastern Sierra Slopes of Inyo County

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

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

4. Avalanche Warning for: Mono

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

6. Cold Weather Advisory for: North Bay Interior Mountains; North Bay Interior Valleys; Southern Salinas Valley/Arroyo Seco and Lake San Antonio

7. Cold Weather Advisory for: Santa Cruz Mountains; Santa Clara Valley Including San Jose

8. Extreme Cold Warning for: Eastern Santa Clara Hills

9. Extreme Cold Warning for: Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

10. Flood Advisory for: Alameda, CA; Contra Costa, CA; San Francisco, CA; San Mateo, CA; Santa Clara, CA; Santa Cruz, CA

11. Flood Advisory for: Fresno, CA

12. Flood Advisory for: Monterey, CA

13. Flood Advisory for: San Luis Obispo, CA; Santa Barbara, CA

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

15. 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

16. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Malibu Coast; Los Angeles County Beaches

17. High Surf Advisory for: Ventura County Beaches

18. High Wind Warning for: Antelope Valley

19. Severe Thunderstorm Warning for: San Luis Obispo, CA

20. Special Weather Statement for: Northern Humboldt Coast

21. Wind Advisory for: Antelope Valley

22. Wind Advisory for: Apple and Lucerne Valleys

23. Wind Advisory for: Coachella Valley

24. Wind Advisory for: Cuyama Valley; 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 Southwestern Coast

25. Wind Advisory for: Death Valley National Park

26. Wind Advisory for: Imperial County Southwest

27. Wind Advisory for: Joshua Tree NP West; Joshua Tree NP East; Salton Sea; Chuckwalla Mountains; Imperial County West; Chiriaco Summit; Palo Verde Valley; Chuckwalla Valley

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

29. 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

30. Wind Advisory for: San Diego County Deserts

31. Wind Advisory for: San Gorgonio Pass Near Banning

32. Wind Advisory for: Santa Clarita Valley; Santa Barbara County Southeastern Coast; 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; Los Angeles County San Gabriel Valley

33. Wind Advisory for: Santa Ynez Mountains Western Range

34. 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

35. Wind Advisory for: Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin

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

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

38. Winter Storm Warning for: Grapevine

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

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

41. 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

42. Winter Storm Warning for: Mono

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

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

45. Winter Storm Warning for: Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County

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

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

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

49. 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

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

51. Winter Storm Warning for: Southwestern Humboldt

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

53. Winter Storm Warning for: Western Siskiyou County

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

55. Winter Weather Advisory for: Central Siskiyou County

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

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

58. Winter Weather Advisory for: Eastern Santa Clara Hills

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

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

61. Winter Weather Advisory for: Mono

62. 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

63. Winter Weather Advisory for: Owens Valley

64. Winter Weather Advisory for: San Diego County Mountains

65. 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

66. Winter Weather Advisory for: Surprise Valley California

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Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

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