Weather Alerts for California
1. Air Quality Alert for: Central Ventura County Valleys; Southeastern Ventura County Valleys; Santa Susana Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
2. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
3. Air Quality Alert for: Santa Clarita Valley; Interstate 5 Corridor; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains
4. Beach Hazards Statement for: Catalina and Santa Barbara Islands; Malibu Coast; Los Angeles County Beaches
5. Beach Hazards Statement for: San Diego County Coastal Areas; Orange County Coastal
6. Beach Hazards Statement for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
7. Freeze Warning 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
8. Freeze Watch 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
9. Frost Advisory for: Southern Humboldt Interior; Southern Trinity
10. High Surf Advisory for: Ventura County Beaches
11. High Wind Warning for: Mojave Desert Slopes
12. High Wind Warning for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
13. High Wind Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor; Western Antelope Valley Foothills
14. Lake Wind Advisory for: Mono; Mineral and Southern Lyon Counties
15. Red Flag Warning for: North Bay Interior Mountains
16. Red Flag Warning for: Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Central Sacramento Valley including Glenn/Colusa/Yuba/Northern Sutter/Butte County Below 1000 Ft; Southern Sacramento Valley In Yolo/Sacramento/Far Western Placer/Southern Sutter and Solano County Below 1000 Ft - Excludes the Delta; Eastern Delta; Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft - Excludes the Delta; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Eastern Mendocino NF
17. Red Flag Warning for: San Joaquin Valley
18. Red Flag Warning for: Southern Ventura County Mountains; Northern Ventura County Mountains; Interstate 5 Corridor
19. Red Flag Warning for: West Side Hills; Tehachapi Area; Fort Tejon
20. Special Weather Statement for: Surprise Valley California; 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; Western Nevada Basin and Range including Pyramid Lake; Northern Washoe County
21. Wind Advisory for: Lake Casitas; Antelope Valley
22. Wind Advisory for: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast
23. Wind Advisory for: Santa Barbara County Interior Mountains
24. Wind Advisory for: Santa Clarita Valley
25. Wind Advisory for: Santa Ynez Mountains Eastern Range
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Current U.S. National Radar--Current
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National Weather Forecast--Current
The Current National Weather Forecast and National Weather Map are shown below.
National Weather Forecast for Tomorrow
Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.
North America Water Vapor (Moisture)
This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.
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
