Weather Alert in Washington
Flood Warning issued March 17 at 9:34PM PDT until March 22 at 11:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Chelan, WA
DESCRIPTION: Light to periodically moderate rain is expected for the lower Stehekin Valley this week along with melting snow as temperatures warm into the 40s and 50s. Flows in rivers will increase quickly and reach critical levels. * WHAT...Flooding caused by rain and snowmelt continues for the lower Stehekin Valley. * WHERE...A portion of North Central Washington, including the following county, Chelan. * WHEN...Until 1100 PM PDT Sunday. * IMPACTS...When the Stehekin River gauge hits 19.3 feet, water breaches the river bank. At 20 feet, water inundates some properties and overtops the temporary corduroy bridge. Company Creek Road begins to flood in places at the northern end and Battalion Creek culverts are beginning to be overtopped. At 20.5 feet, water begins to damage Wood Road. * ADDITIONAL DETAILS... - At 924 PM PDT, the Stehekin River is at 19.9 feet. River levels will continue to rise through the week with an expected crest of 22.9 feet on Saturday. - http://www.weather.gov/safety/flood
INSTRUCTION: Those living in areas prone to flooding should be prepared to take action should flooding develop.
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Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - 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
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