Weather Alert in California

Recent Locations: Azusa, CA  

Winter Weather Advisory issued May 2 at 12:12AM PDT until May 4 at 11:00PM PDT by NWS Las Vegas NV

AREAS AFFECTED: Eastern Sierra Slopes of Inyo County

DESCRIPTION: * WHAT...Snow expected above 8000 feet. Total snow accumulations between 2 and 4 inches between 8000 and 9000 feet and 4 to 8 inches above 9000 feet. Winds gusting as high as 40 mph. * WHERE...Eastern Sierra Slopes. * WHEN...From 5 PM Saturday to 11 PM PDT Sunday. * IMPACTS...This late season winter storm will pose a significant risk to those hikers and outdoor recreationalists not prepared for winter conditions. The combination of low temperatures, gusty winds and accumulating snow will make for hazardous conditions. * ADDITIONAL DETAILS...Snow levels will vary between 7500 feet and 8500 feet.

INSTRUCTION: Slow down and use caution while traveling. Call 1-800-427-7623 for road information.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Cirrostratus Clouds Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Condensation Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

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