Weather Alert in Washington
Flood Warning issued March 19 at 9:21PM PDT until March 22 at 11:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Chelan, WA
DESCRIPTION: Moderate to periodically heavy rain will continue into Friday at the headwaters of the Stehekin River. Mild temperatures will also result in a contribution of low to mid elevation snowmelt. 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 909 PM PDT, Doppler radar and precipitation gages indicate between 2 and 4 inches of rain has fallen in the headwaters of the Stehekin River near the Cascade crest. Rapid snowmelt is also occurring and will add to the flooding. The Stehekin River at Stehekin will hover near 23 feet through Friday morning. - Additional rainfall amounts of 1 to 2.5 inches are possible for the headwaters of the Stehekin River through Friday. The Stehekin River will see additional rises Friday afternoon into Saturday and is forecast to crest between 23.5 and 24 feet overnight on Friday before it starts to recede Saturday afternoon, but will remain high into next week. - 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 Cumulus Clouds?
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Cumulus clouds are fluffy and textured with rounded tops, and
may have flat bottoms. The border of a cumulus cloud
is clearly defined, and can have the appearance of cotton or cauliflower.
Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall,
becoming cumulus congestus and possibly the even taller cumulonimbus clouds.
When cumulus clouds become taller, they have a greater chance of producing precipitation.
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Weather Topic: What is Evaporation?
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Evaporation is the process which returns water from the earth
back to the atmosphere, and is another crucial process in the water cycle.
Evaporation is the transformation of liquid into gas, and it happens because
molecules are excited by the application of energy and turn into vapor.
In order for water to evaporate it has to be on the surface of a body of water.
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