Weather Alert in Washington
Flood Warning issued March 18 at 7:47PM PDT until March 21 at 11:00AM PDT by NWS Seattle WA
AREAS AFFECTED: King, WA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Washington... Snoqualmie River Near Snoqualmie Falls affecting King County. .Moderate to heavy rain continues over the Central Cascades. River flooding will continue on the Snoqualmie River near Snoqualmie Falls into tonight. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Snoqualmie River near Snoqualmie Falls. * WHEN...Until late Saturday morning. * IMPACTS...At 20,000.0 cfs, the Snoqualmie River will cause widespread flooding of pasture lands and roads along the river from the town of Snoqualmie downstream through Fall City. Roads that may become flooded include Fall City-Carnation...Tolt Hill... and Novelty Flats Roads. This river level on the Snoqualmie corresponds roughly to a phase 3 flood in the King County flood system. * ADDITIONAL DETAILS... - At 7:00 PM PDT Wednesday the flow was 23,100.0 cfs. - Flood flow is 20,000.0 cfs. - Recent Activity...The maximum river flow in the 24 hours ending at 7:00 PM PDT Wednesday was 23,700.0 cfs. - Forecast...The river is cresting this evening and will begin to see flow diminish overnight before falling below flood stage by Thursday morning. It will reach its lowest flow of 13,696 cfs Thursday afternoon before rising again. The river is expected to return to flood stage by early Friday morning. - http://www.weather.gov/safety/flood
INSTRUCTION: Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued by late tonight at 400 AM PDT.
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Weather Topic: What is Freezing Rain?
Home - Education - Precipitation - Freezing Rain
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Freezing rain is a condition where precipitation which has fallen in the form of
water droplets reaches temperatures which are below freezing and freezes upon
coming into contact
with surface objects. The result of this precipitation is a glaze of ice which
can be damaging to plants and man-made structures. A severe onset of freezing
rain which results in a very thick glaze of ice is known as an ice storm.
Next Topic: Graupel
Weather Topic: What is Hail?
Home - Education - Precipitation - Hail
Next Topic: Hole Punch Clouds
Hail is a form of precipitation which is recognized by large solid balls or
clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind.
As the hailstones remain in the updraft, ice is deposited onto them until their
weight becomes heavy enough for them to fall to the earth's surface.
Hail storms can cause significant damage to crops, aircrafts, and man-made structures,
despite the fact that the duration is usually less than ten minutes.
Next Topic: Hole Punch Clouds
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