Weather Alert in Washington
Flood Warning issued March 20 at 7:53PM PDT until March 21 at 3:42PM PDT by NWS Seattle WA
AREAS AFFECTED: Snohomish, WA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Washington... Skykomish River Near Gold Bar affecting Snohomish County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Skykomish River near Gold Bar. * WHEN...Until tomorrow afternoon. * IMPACTS...At 16.0 feet, the Skykomish River will cause minor flooding of low pasture lands and some roads along the river... including Ben Howard road...Index-Galena Rd and Tualco Loop Rd. A stage of 16 feet on the Skykomish River corresponds to a Phase 3 in the Snohomish County flood program. * ADDITIONAL DETAILS... - At 7:30 PM PDT Friday the stage was 16.7 feet. - Flood stage is 15.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:30 PM PDT Friday was 17.5 feet. - Forecast...The river will continue to recede, and be below flood stage by late tonight into Saturday morning. The river will further recede over the weekend. - Flood History...This crest compares to a previous crest of 16.6 feet on 01/09/1990. - 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. Be especially cautious at night when it is harder to recognize the dangers of flooding. 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 Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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