Weather Alerts for California
1. High Surf Advisory for: Catalina and Santa Barbara Islands; Los Angeles County Coast including Downtown Los Angeles; Ventura County Coast
2. High Surf Advisory for: Coastal Del Norte; Northern Humboldt Coast
3. High Surf Advisory for: Coastal North Bay Including Point Reyes National Seashore; Northern Monterey Bay; San Francisco; San Francisco Peninsula Coast; Southern Monterey Bay and Big Sur Coast
4. High Surf Advisory for: Orange County Coastal; San Diego County Coastal Areas
5. High Surf Advisory for: San Luis Obispo County Central Coast; Santa Barbara County Central Coast
6. High Surf Advisory for: Santa Barbara County South Coast
7. Lake Wind Advisory for: Greater Lake Tahoe Area
8. Special Weather Statement for: Greater Lake Tahoe Area; Lassen-Eastern Plumas-Eastern Sierra Counties; Mono; Surprise Valley California
9. Wind Advisory for: Apple and Lucerne Valleys; Coachella Valley; Riverside County Mountains; San Bernardino County Mountains; San Diego County Deserts; San Diego County Mountains; San Gorgonio Pass Near Banning
10. Wind Advisory for: Eastern Mojave Desert, Including the Mojave National Preserve; Western Mojave Desert
11. Wind Advisory for: Eastern Sierra Slopes of Inyo County; Owens Valley
12. Wind Advisory for: Imperial County Southwest
13. Winter Weather Advisory for: Central Sierra
14. Winter Weather Advisory for: Greater Lake Tahoe Area
15. Winter Weather Advisory for: Modoc County
16. Winter Weather Advisory for: West Slope Northern Sierra Nevada; Western Plumas County, Lassen Park
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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 are Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
