Weather Alerts for California
1. Air Quality Alert for: Coachella Valley
2. Air Quality Alert for: Imperial County Southwest; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley
3. Avalanche Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
4. Beach Hazards Statement for: Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast
5. High Surf Advisory for: Malibu Coast; Los Angeles County Beaches
6. High Surf Advisory for: San Diego County Coastal Areas; Orange County Coastal
7. 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
8. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
9. High Surf Advisory for: Ventura County Beaches
10. High Wind Warning for: Cuyama Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Antelope Valley
11. Wind Advisory for: Apple and Lucerne Valleys
12. 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; 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; Los Angeles County San Gabriel Valley
13. Wind Advisory for: Coachella Valley
14. Wind Advisory for: Imperial County Southwest
15. Wind Advisory for: Joshua Tree NP West; Salton Sea; Imperial County West
16. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley
17. 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
18. Wind Advisory for: San Diego County Deserts
19. Wind Advisory for: San Gorgonio Pass Near Banning
20. 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
21. Wind Advisory for: Western Mojave Desert; Eastern Mojave Desert, Including the Mojave National Preserve; Morongo Basin
22. Winter Storm Warning for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior
23. Winter Storm Warning for: Grapevine
24. 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
25. Winter Storm Warning for: Northern Trinity; Southern Trinity
26. Winter Storm Warning for: Northern Ventura County Mountains; Eastern San Gabriel Mountains
27. Winter Storm Warning for: Northwestern Mendocino Interior; Northeastern Mendocino Interior; Northern Lake County; Southern Lake County
28. Winter Storm Warning for: Piute Walker Basin; Tehachapi; Frazier Mountain Communities
29. Winter Storm Warning for: Riverside County Mountains
30. Winter Storm Warning for: San Bernardino County Mountains
31. Winter Storm Warning for: Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Interstate 5 Corridor
32. 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
33. Winter Storm Warning for: South Central Siskiyou County; North Central and Southeast Siskiyou County
34. Winter Storm Warning for: Southwestern Humboldt
35. Winter Storm Warning for: Western San Gabriel Mountains and Highway 14 Corridor; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills
36. Winter Storm Warning for: Western Siskiyou County
37. Winter Weather Advisory for: Central Siskiyou County
38. Winter Weather Advisory for: Coastal Del Norte; Northern Humboldt Coast
39. Winter Weather Advisory for: Eastern Santa Clara Hills
40. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
41. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
42. Winter Weather Advisory for: Modoc County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
43. Winter Weather Advisory for: Mono
44. Winter Weather Advisory for: Northeast Siskiyou and Northwest Modoc Counties; Klamath Basin
45. Winter Weather Advisory for: San Diego County Mountains
46. 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
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Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - 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
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