Weather Alert in California

Recent Locations: South Hill, VA   San Ysidro, CA  
Current Alerts for San Ysidro, CA: Extreme Heat Watch Heat Advisory

Heat Advisory issued March 13 at 12:08PM PDT until March 13 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

AREAS AFFECTED: San Luis Obispo County Beaches; San Luis Obispo County Inland Central Coast; Santa Lucia Mountains; Santa Barbara County Central Coast Beaches; Santa Barbara County Inland Central Coast; Santa Ynez Valley; Santa Barbara County Southwestern Coast; Santa Barbara County Southeastern Coast; Santa Ynez Mountains Western Range; Santa Ynez Mountains Eastern Range

DESCRIPTION: * WHAT...For the Heat Advisory, temperatures up to 95. Historic, long and record breaking March heatwave possible next week with dangerously hot conditions up to 100 possible within the Extreme Heat Watch. * WHERE...Much of Southwest California. * WHEN...For the Heat Advisory, until 8 PM PDT this evening. For the Extreme Heat Watch, from Monday morning through Friday evening. * IMPACTS...Long duration summer-like heat wave will lead to increased risk of heat illness, especially for vulnerable people such as the young and old and those without cooling systems. * ADDITIONAL DETAILS...Take steps now to ensure you have a heat plan for you and your community.

INSTRUCTION: Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

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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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