Weather Alerts for California

Recent Locations: Courtland, MN Jackson, WI Vista, CA

Current Alerts for Vista, CA: Wind Advisory

1. High Wind Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties

2. High Wind Warning for: Mojave Desert Slopes

3. High Wind Warning for: Mono

4. Wind Advisory for: Central Siskiyou County

5. Wind Advisory for: Coastal Del Norte; Del Norte Interior

6. Wind Advisory for: Indian Wells Valley; Mojave Desert

7. Wind Advisory for: Modoc County

8. Wind Advisory for: Owens Valley; Death Valley National Park; Eastern Mojave Desert, Including the Mojave National Preserve

9. Wind Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys; Coachella Valley; San Diego County Deserts; San Gorgonio Pass Near Banning

10. Wind Advisory for: Surprise Valley California; Northern Washoe County

11. Wind Advisory for: Western Mojave Desert

12. Winter Weather Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area

13. Winter Weather Advisory for: Modoc County

14. Winter Weather Advisory for: Mono

15. Winter Weather Advisory for: Northern Trinity

16. Winter Weather Advisory for: West Slope Northern Sierra Nevada

17. Winter Weather Advisory for: Western Siskiyou County

18. Winter Weather Advisory for: Yosemite NP outside of the valley; Upper San Joaquin River

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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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 Hail?

Home - Education - Precipitation - Hail

Hail Next Topic: Hole Punch Clouds

Hail is a form of precipitation which is recognized by large solid balls or clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind. As the hailstones remain in the updraft, ice is deposited onto them until their weight becomes heavy enough for them to fall to the earth's surface.

Hail storms can cause significant damage to crops, aircrafts, and man-made structures, despite the fact that the duration is usually less than ten minutes.

Next Topic: Hole Punch Clouds

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds