Weather Alerts for California
1. Beach Hazards Statement for: Ventura County Beaches
2. Freeze Warning for: Western Siskiyou County; Central Siskiyou County; Eastern Curry County and Josephine County; Jackson County
3. Frost Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior; Northern Trinity; Southern Trinity; Northwestern Mendocino Interior; Northeastern Mendocino Interior
4. Frost Advisory for: Northern Lake County
5. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
6. High Wind Warning for: Mojave Desert Slopes
7. Lake Wind Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
8. Wind Advisory for: Antelope Valley
9. Wind Advisory for: Interstate 5 Corridor; Western Antelope Valley Foothills
10. Wind Advisory for: North Bay Interior Mountains; North Bay Interior Valleys
11. Wind Advisory for: Northeast Foothills/Sacramento Valley; Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
12. Wind Advisory for: Northern Lake County
13. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Southern Sacramento Valley; Carquinez Strait and Delta; Mountains Southwestern Shasta County to Western Colusa County
14. Wind Advisory for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range
15. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
16. Wind Advisory for: Santa Clarita Valley; Santa Barbara County Interior Mountains; Southern Ventura County Mountains; Northern Ventura County Mountains
17. Wind Advisory for: Southern Lake County
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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 are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds