Weather Alerts for California
1. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning
2. Air Quality Alert for: Imperial County Southwest; Imperial County West; Imperial Valley
3. High Surf Advisory for: Ventura County Beaches; Malibu Coast; Los Angeles County Beaches
4. High Wind Warning for: Interstate 5 Corridor
5. High Wind Warning for: Mojave Desert Slopes
6. High Wind Warning for: Western Antelope Valley Foothills
7. High Wind Watch for: Antelope Valley
8. High Wind Watch for: Southern Ventura County Mountains; Northern Ventura County Mountains
9. Wind Advisory for: Antelope Valley
10. Wind Advisory for: Eastern San Gabriel Mountains
11. Wind Advisory for: Imperial County Southwest
12. Wind Advisory for: Joshua Tree NP West; Imperial County Southeast
13. Wind Advisory for: Riverside County Mountains; San Diego County Mountains; Coachella Valley; San Diego County Deserts
14. Wind Advisory for: Salton Sea; Imperial County West; Imperial Valley
15. Wind Advisory for: Salton Sea; Imperial County West; Imperial Valley
16. Wind Advisory for: San Bernardino County Mountains; Apple and Lucerne Valleys
17. Wind Advisory for: San Gorgonio Pass Near Banning
18. Wind Advisory for: Santa Barbara County Interior Mountains
19. Wind Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
20. Wind Advisory for: South End of the Upper Sierra; Piute Walker Basin; Tehachapi; Indian Wells Valley; Mojave Desert
21. Wind Advisory for: Southern Ventura County Mountains; Northern Ventura County Mountains
22. Wind Advisory for: Western Mojave Desert
23. Wind Advisory for: Western San Gabriel Mountains and Highway 14 Corridor
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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
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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 Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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
