Weather Alerts for California
1. Extreme Heat Warning for: Coalinga - Avenal; Fresno-Clovis; West Side Mountains South of 198; Buena Vista; Bakersfield; South End San Joaquin Valley; Fresno-Tulare Foothills; South End Sierra Foothills
2. Extreme Heat Warning for: Cuyama Valley; Santa Clarita Valley; Santa Lucia Mountains; Southern Salinas Valley; San Luis Obispo County Interior Valleys; San Luis Obispo County Mountains; Santa Ynez Valley; Santa Barbara County Interior Mountains; Western 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; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley; Los Angeles County San Gabriel Valley
3. Extreme Heat Warning for: Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range; Los Angeles County Inland Coast including Downtown Los Angeles; Eastern Santa Monica Mountains Recreational Area
4. Extreme Heat Warning for: Western Siskiyou County; Central Siskiyou County
5. Flash Flood Warning for: Imperial, CA
6. Flash Flood Warning for: Imperial, CA
7. Flash Flood Warning for: Mariposa, CA; Tuolumne, CA
8. Flash Flood Warning for: Tulare, CA
9. Flood Advisory for: Fresno, CA
10. Flood Advisory for: Fresno, CA
11. Flood Advisory for: Lassen, CA
12. Flood Advisory for: Lassen, CA; Plumas, CA; Sierra, CA; Washoe, NV
13. Flood Advisory for: Plumas, CA
14. Flood Advisory for: Riverside, CA
15. Flood Advisory for: Tuolumne, CA
16. Flood Advisory for: Tuolumne, CA
17. Flood Watch for: Greater Lake Tahoe Area; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area; Northern Washoe County
18. Flood Watch for: Mono; Mineral and Southern Lyon Counties
19. Flood Watch for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP
20. Heat Advisory for: Lake Casitas; Ojai Valley; Central Ventura County Valleys
21. Heat Advisory for: West Side of Fresno and Kings Counties; Caruthers - San Joaquin - Selma; Buttonwillow - Lost Hills - I5; Delano-Wasco-Shafter; Hanford - Corcoran - Lemoore; Visalia - Porterville - Reedley; Southeast San Joaquin Valley; Kern River Valley
22. Red Flag Warning for: Shasta-Trinity National Forest in Siskiyou County; Umpqua National Forest; Western Rogue Basin including the Illinois Valley; Eastern Rogue Valley
23. Red Flag Warning for: Trinity
24. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Siskiyou Mountains; Southern Oregon Cascades; Klamath Basin and the Fremont-Winema National Forest; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties
25. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Siskiyou Mountains; Southern Oregon Cascades; Klamath Basin and the Fremont-Winema National Forest; South Central Oregon Desert including the BLM Land in Eastern Lake and Western Harney Counties
26. Special Weather Statement for: Piute Walker Basin; Tehachapi; Indian Wells Valley; Mojave Desert Slopes; Mojave Desert
27. Special Weather Statement for: San Bernardino County Mountains; Riverside County Mountains; San Gorgonio Pass Near Banning
28. Special Weather Statement for: Upper San Joaquin River
29. Special Weather Statement for: West Slope Northern Sierra Nevada
30. Special Weather Statement for: Yosemite NP outside of the valley
31. Special Weather Statement for: Yosemite NP outside of the valley
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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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