Weather Alerts for California
1. Air Quality Alert for: Coachella Valley; San Gorgonio Pass Near Banning
2. Freeze Watch for: Western Siskiyou County; Central Siskiyou County
3. High Wind Warning for: Eastern Sierra Slopes of Inyo County; Owens Valley; White Mountains of Inyo County; Death Valley National Park; Esmeralda and Central Nye County; Western Clark and Southern Nye County
4. High Wind Warning for: Mojave Desert Slopes
5. Wind Advisory for: Imperial County Southwest
6. Wind Advisory for: Indian Wells Valley; Mojave Desert
7. Wind Advisory for: Joshua Tree NP West
8. Wind Advisory for: Northern Sacramento Valley; Central Sacramento Valley; Northeast Foothills/Sacramento Valley
9. Wind Advisory for: Riverside County Mountains; San Diego County Mountains; Coachella Valley; San Diego County Deserts
10. Wind Advisory for: Salton Sea; Chuckwalla Mountains; Imperial County Southeast; Imperial County West; Imperial Valley
11. Wind Advisory for: San Bernardino County Mountains; Apple and Lucerne Valleys
12. Wind Advisory for: San Gorgonio Pass Near Banning
13. Wind Advisory for: Surprise Valley California; Northern Washoe County
14. Wind Advisory for: Western San Gabriel Mountains and Highway 14 Corridor; Eastern San Gabriel Mountains; Western Antelope Valley Foothills; Eastern Antelope Valley Foothills; Antelope Valley
15. Winter Storm Warning for: Greater Lake Tahoe Area; Mono; Greater Lake Tahoe Area
16. Winter Storm Warning for: Western Plumas County/Lassen Park; West Slope Northern Sierra Nevada
17. Winter Storm Warning for: Yosemite NP outside of the valley; Upper San Joaquin River; Kaiser to Rodgers Ridge; Kings Canyon NP; Grant Grove Area; Sequoia NP
18. Winter Weather Advisory for: Del Norte Interior; Northern Humboldt Interior; Southern Humboldt Interior; Northern Trinity; Southern Trinity; Northeastern Mendocino Interior
19. Winter Weather Advisory for: Lassen-Eastern Plumas-Eastern Sierra Counties
20. Winter Weather Advisory for: Western Siskiyou County
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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
