Weather Alert in California

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

Wind Advisory issued May 3 at 3:18AM PDT until May 4 at 4:00AM PDT by NWS Los Angeles/Oxnard CA

AREAS AFFECTED: San Luis Obispo County Beaches; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast

DESCRIPTION: * WHAT...Northwest winds 15 to 25 mph with gusts to 40 mph expected. Isolated gusts to 50 mph in the hills possible. * WHERE...San Luis Obispo County Beaches, Santa Barbara County Central Coast Beaches, and Santa Barbara County Inland Central Coast. * WHEN...From 3 PM this afternoon to 4 AM PDT Sunday. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Hazardous driving conditions, especially for big rigs and motor homes.

INSTRUCTION: Use extra caution on the roads. Secure loose objects.

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Current U.S. National Radar--Current

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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

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

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

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