Weather Alerts for California

Recent Locations: Irvine, CA  
Current Alerts for Irvine, CA: High Surf Advisory

1. Freezing Fog Advisory for: Northeast Siskiyou and Northwest Modoc Counties

2. Wind Advisory for: Central Siskiyou County

3. High Wind Watch for: Modoc County

4. High Surf Warning for: Coastal North Bay Including Point Reyes National Seashore; Northern Monterey Bay; San Francisco; San Francisco Peninsula Coast; Southern Monterey Bay and Big Sur Coast

5. Winter Weather Advisory for: Sierra Nevada from Yosemite to Kings Canyon

6. Coastal Flood Advisory for: San Luis Obispo County Central Coast; Santa Barbara County Central Coast

7. High Surf Warning for: San Luis Obispo County Central Coast; Santa Barbara County Central Coast

8. High Surf Advisory for: Santa Barbara County South Coast

9. High Surf Advisory for: Ventura County Coast

10. High Surf Advisory for: Catalina and Santa Barbara Islands; Los Angeles County Coast including Downtown Los Angeles

11. High Surf Warning for: Coastal Del Norte; Mendocino Coast; Northern Humboldt Coast; Southwestern Humboldt

12. Winter Weather Advisory for: West Slope Northern Sierra Nevada

13. Wind Advisory for: Indian Wells Valley; Kern County Mountains; Southeastern Kern County Desert

14. High Surf Advisory for: Orange County Coastal; San Diego County Coastal Areas

15. Winter Weather Advisory for: Greater Lake Tahoe Area

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Current U.S. National Radar--Current

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Weather Topic: What is Fog?

Home - Education - Cloud Types - Fog

fog Next Topic: Fractus Clouds

Fog is technically a type of stratus cloud, which lies along the ground and obscures visibility.

It is usually created when humidity in the air condenses into tiny water droplets. Because of this, some places are more prone to foggy weather, such as regions close to a body of water.

Fog is similar to mist; both are the appearance of water droplets suspended in the air, but fog is the term applied to the condition when visibility is less than 1 km.

Next Topic: Fractus Clouds

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

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