Weather Alerts for California
1. Flood Advisory for: Inyo, CA
2. Flood Advisory for: Lassen, CA
3. Flood Warning for: Butte, CA; Glenn, CA
4. Flood Warning for: Butte, CA; Glenn, CA
5. Flood Warning for: Lassen, CA
6. Flood Warning for: Mendocino, CA
7. Flood Warning for: Mendocino, CA
8. Flood Warning for: Modoc, CA
9. Flood Warning for: Sonoma, CA
10. Flood Warning for: Sonoma, CA
11. Flood Warning for: Tehama, CA
12. Flood Warning for: Tehama, CA
13. Flood Warning for: Tehama, CA
14. Flood Warning for: Tehama, CA
15. Frost Advisory for: North Bay Interior Valleys
16. Wind Advisory for: Western Santa Monica Mountains Recreational Area; Eastern Santa Monica Mountains Recreational Area; Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills
17. Winter Storm Warning for: Del Norte Interior
18. Winter Storm Warning for: Eastern Sierra Slopes of Inyo County
19. Winter Storm Warning for: Western Siskiyou County
20. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Sequoia NP; South End of the Upper Sierra
21. Winter Storm Watch for: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Greater Lake Tahoe Area
22. Winter Storm Watch for: Mono
23. Winter Weather Advisory for: Coastal Del Norte
24. Winter Weather Advisory for: Northern Humboldt Interior; Southern Humboldt Interior
25. Winter Weather Advisory for: Northern Trinity; Southern Trinity
26. Winter Weather Advisory for: South Central Siskiyou County
27. Winter Weather Advisory for: Southwestern Humboldt
28. Winter Weather Advisory for: Western Siskiyou County
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National Weather Forecast for Tomorrow
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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
