Weather Alert in Washington
Flood Warning issued March 24 at 1:33PM PDT until March 28 at 8:30AM PDT by NWS Spokane WA
AREAS AFFECTED: Chelan, WA
DESCRIPTION: * WHAT...Flooding caused by rain and snowmelt is expected for the lower Stehekin Valley. * WHERE...A portion of North Central Washington, including the following county, Chelan. * WHEN...Until 830 AM PDT Saturday. * 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 122 PM PDT, the Stehekin River was at 21.2 feet and will see an additional rise up to 21.8 feet by Wednesday morning. The river will then recede down to around 20.4 feet at the end of the week. It is forecasted to stay above 20 feet through at least Saturday, March 28th. - Gauge reports of between 0.25 and 1.25 inches of rain have fallen in the headwaters of the Stehekin River over a 24 hour period through 100 PM Tuesday. Snow melt is also occurring and contributing to rises. - 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 Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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