Weather Alerts for California
1. Air Quality Alert for: Coachella Valley
2. Avalanche Watch for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
3. High Wind Warning for: Eastern Sierra Slopes of Inyo County; Owens Valley
4. High Wind Warning for: Mojave Desert Slopes
5. Wind Advisory for: Coachella Valley; San Gorgonio Pass Near Banning
6. Wind Advisory for: Death Valley National Park
7. Wind Advisory for: Eastern Mojave Desert, Including the Mojave National Preserve
8. Wind Advisory for: Imperial County Southwest
9. Wind Advisory for: Imperial County West; Imperial Valley
10. Wind Advisory for: Imperial County West; Imperial Valley
11. Wind Advisory for: Indian Wells Valley
12. Wind Advisory for: Joshua Tree NP West
13. Wind Advisory for: Mojave Desert
14. Wind Advisory for: Mojave Desert Slopes
15. Wind Advisory for: Morongo Basin
16. Wind Advisory for: San Bernardino County Mountains; Riverside County Mountains; San Diego County Mountains; Apple and Lucerne Valleys
17. Wind Advisory for: San Diego County Deserts
18. Wind Advisory for: Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
19. Wind Advisory for: Western Mojave Desert
20. Wind Advisory for: White Mountains of Inyo County; Esmeralda and Central Nye County; Lincoln County; Sheep Range
21. Winter Storm Warning for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
22. Winter Storm Warning for: Lassen-Eastern Plumas-Eastern Sierra Counties
23. Winter Storm Warning for: Northern Trinity; Southern Trinity
24. Winter Storm Warning for: Shasta Lake Area / Northern Shasta County; Mountains Southwestern Shasta County to Western Colusa County
25. Winter Storm Warning for: South Central Siskiyou County
26. Winter Storm Warning for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
27. Winter Storm Warning for: Western Siskiyou County; North Central and Southeast Siskiyou County
28. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge
29. Winter Weather Advisory for: Kings Canyon NP; Grant Grove Area; Sequoia NP; South End of the Upper Sierra
30. Winter Weather Advisory for: Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
31. Winter Weather Advisory for: Mono
32. Winter Weather Advisory for: Northern Humboldt Interior
33. Winter Weather Advisory for: South Central Siskiyou County
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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
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