Weather Alerts for California

Recent Locations: Springfield, OH Isle, MN Greenbrae, CA

1. Avalanche Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

2. Flood Advisory for: Del Norte, CA

3. Flood Advisory for: Humboldt, CA

4. Flood Advisory for: Humboldt, CA

5. Flood Advisory for: Humboldt, CA

6. Flood Advisory for: Humboldt, CA; Mendocino, CA; Trinity, CA

7. Flood Watch for: Coastal Del Norte; Del Norte Interior; Northern Humboldt Coast; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior; Northern Trinity; Southern Trinity; Mendocino Coast; Northwestern Mendocino Interior; Northeastern Mendocino Interior

8. Flood Watch for: Southeastern Mendocino Interior

9. Flood Watch for: Southwestern Mendocino Interior; Southeastern Mendocino Interior; Northern Lake County; Southern Lake County

10. Flood Watch for: Western Siskiyou County; Central Siskiyou County; South Central Oregon Coast; Curry County Coast; Central Douglas County; Eastern Curry County and Josephine County; Jackson County

11. High Surf Advisory for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches

12. Wind Advisory for: Central Siskiyou County

13. Wind Advisory for: Greater Lake Tahoe Area; Mono

14. Wind Advisory for: Modoc County; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

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