Weather Alert in Idaho

Recent Locations: Windsor, VT Vernon Hills, IL Blackfoot, ID

High Wind Warning issued March 11 at 4:28PM PDT until March 12 at 11:00AM PDT by NWS Spokane WA

AREAS AFFECTED: Coeur d'Alene Area; Idaho Palouse; Northeast Blue Mountains; Lower Garfield and Asotin Counties; Washington Palouse; Moses Lake Area; Upper Columbia Basin; Spokane Area; Waterville Plateau

DESCRIPTION: * WHAT...Southwest winds 30 to 45 mph with gusts up to 65 mph expected. Strongest winds occurring between 8 PM to 5 AM. * WHERE...Othello, Waterville, Rosalia, Fairfield, Mansfield, Ritzville, Pullman, Potlatch, Alpowa Summit, Cheney, Anatone, Badger Mountain Road, Ephrata, Coulee City, Rockford, Coeur d'Alene, Oakesdale, Davenport, Tekoa, Post Falls, Moses Lake, Odessa, Wilbur, Downtown Spokane, Pomeroy, Quincy, Worley, Peola, Hayden, La Crosse, Grand Coulee, Colfax, Plummer, Uniontown, Airway Heights, Genesee, Cloverland Road, Harrington, Clarkston, Spokane Valley, Mountain Road, Creston, and Moscow. * WHEN...Until 11 AM PDT Thursday. * IMPACTS...Damaging winds will blow down trees and power lines. Widespread power outages are expected. Travel will be difficult, especially for high profile vehicles. * ADDITIONAL DETAILS...Patchy blowing dust will be possible in the Columbia Basin around Moses Lake.

INSTRUCTION: Remain in the lower levels of your home during the windstorm, and avoid windows. Watch for falling debris and tree limbs. Use caution if you must drive.

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Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds