Weather Alerts for California
1. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning
2. Air Quality Alert for: Imperial Valley
3. Beach Hazards Statement for: Catalina and Santa Barbara Islands; Malibu Coast; Los Angeles County Beaches
4. Beach Hazards Statement for: San Diego County Coastal Areas; Orange County Coastal
5. Beach Hazards Statement for: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches
6. Excessive Heat Warning for: Coachella Valley; San Diego County Deserts
7. Excessive Heat Warning for: Imperial County Southwest; Salton Sea; Imperial County West; Imperial Valley; Chuckwalla Valley
8. Excessive Heat Warning for: San Gorgonio Pass Near Banning
9. Freeze Watch for: Northeast Siskiyou and Northwest Modoc Counties; Modoc County; Klamath Basin; Northern and Eastern Klamath County and Western Lake County; Central and Eastern Lake County
10. Heat Advisory for: San Bernardino and Riverside County Valleys-The Inland Empire
11. Heat Advisory for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range
12. Heat Advisory for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
13. High Surf Advisory for: Ventura County Beaches
14. High Wind Warning for: Mojave Desert Slopes
15. High Wind Warning for: Northern Ventura County Mountains; Interstate 5 Corridor; Western Antelope Valley Foothills
16. High Wind Warning for: Santa Barbara County Interior Mountains
17. High Wind Warning for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range
18. High Wind Warning for: Santa Barbara County Southwestern Coast; Santa Ynez Mountains Western Range
19. High Wind Warning for: Southern Ventura County Mountains
20. High Wind Watch for: Mojave Desert Slopes
21. Lake Wind Advisory for: Greater Lake Tahoe Area; Greater Lake Tahoe Area
22. Lake Wind Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
23. Red Flag Warning for: Lake County Portion of Lake-Napa-Sonoma Unit
24. Red Flag Warning for: Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft; Central Sacramento Valley including Glenn/Colusa/Yuba/Northern Sutter/Butte County Below 1000 Ft; Southern Sacramento Valley In Yolo/Sacramento/Far Western Placer/Southern Sutter and Solano County Below 1000 Ft - Excludes the Delta; Southeast Edge Shasta/Trinity NF and Western Portions of Tehama/Glenn RU; Northern Sierra Foothills from 1000 to 3000 Ft. Includes Nevada-Yuba-Placer RU and Anador-Eldorado RU; Eastern Mendocino NF
25. Wind Advisory for: Santa Barbara County Interior Mountains
26. Wind Advisory for: Santa Barbara County Southeastern Coast; Santa Ynez Mountains Eastern Range
27. Wind Advisory for: Santa Clarita Valley
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North America Water Vapor (Moisture)
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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
