Weather Alerts for California
Severe Thunderstorm Warning Special Weather Statement
1. Extreme Heat Warning for: Western Siskiyou County; Central Siskiyou County
2. Flash Flood Warning for: San Bernardino, CA
3. Flash Flood Warning for: San Diego, CA
4. Flash Flood Warning for: San Diego, CA
5. Flood Advisory for: Fresno, CA
6. Flood Advisory for: Fresno, CA
7. Flood Advisory for: Fresno, CA
8. Flood Advisory for: Imperial, CA
9. Flood Advisory for: Kern, CA
10. Flood Advisory for: Madera, CA; Mariposa, CA
11. Flood Advisory for: Mariposa, CA; Tuolumne, CA
12. Flood Advisory for: Riverside, CA
13. Flood Advisory for: Riverside, CA
14. Flood Advisory for: San Bernardino, CA
15. Flood Advisory for: San Diego, CA
16. Flood Advisory for: Sierra, CA
17. Flood Watch for: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Mono; Mineral and Southern Lyon Counties; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area
18. Flood Watch 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
19. Red Flag Warning for: Trinity
20. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Shasta-Trinity National Forest in Siskiyou County; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Umpqua National Forest; Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; 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
21. Red Flag Warning for: Western Klamath National Forest; Central Siskiyou County Including Shasta Valley; Shasta-Trinity National Forest in Siskiyou County; Siskiyou County from the Cascade Mountains East and South to Mt Shasta; Modoc County Except for the Surprise Valley; Umpqua National Forest; Western Rogue Basin including the Illinois Valley; Siskiyou Mountains; Eastern Rogue Valley; 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
22. Severe Thunderstorm Warning for: Imperial, CA
23. Severe Thunderstorm Warning for: Imperial, CA
24. Severe Thunderstorm Warning for: Los Angeles, CA
25. Severe Thunderstorm Warning for: Riverside, CA
26. Severe Thunderstorm Warning for: San Diego, CA
27. Special Weather Statement for: Cuyama Valley; San Luis Obispo County Mountains; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
28. Special Weather Statement for: Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area
29. Special Weather Statement for: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area
30. Special Weather Statement for: San Bernardino County Mountains; Apple and Lucerne Valleys
31. Special Weather Statement for: San Diego County Mountains; San Diego County Deserts
32. Special Weather Statement for: Southern Trinity
33. Special Weather Statement for: Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
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North America Water Vapor (Moisture)
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Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
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