Weather Alert in California

Recent Locations: Sierra City, CA  
Current Alerts for Sierra City, CA: Cold Weather Advisory

High Wind Warning issued February 20 at 10:34AM PST until February 22 at 10:00AM PST by NWS Eureka CA

AREAS AFFECTED: Del Norte Interior; Southwestern Humboldt; Northern Humboldt Interior; Southern Humboldt Interior

DESCRIPTION: * WHAT...Southeast winds 30 to 40 mph with gusts up to 70 mph expected. Higher gusts over high, exposed terrain. * WHERE...Humboldt Interior, Del Norte Interior, and Southwestern Humboldt. * WHEN...From 10 PM this evening to 10 AM PST Sunday. * IMPACTS...Wind gusts will be particularly strong along windward ridges and exposed coastal headlands. Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult. * ADDITIONAL DETAILS...A prolonged period of strong winds is expected from late tonight through Sunday morning. Winds are expected to increase to up to 60 mph late tonight and through Saturday, peaking up to 80 mph Saturday night into Sunday.

INSTRUCTION: N/A

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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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