Weather Alert in Washington
Flood Warning issued March 21 at 8:51AM PDT until March 22 at 12:55PM PDT by NWS Seattle WA
AREAS AFFECTED: King, WA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Washington... Snoqualmie River Near Carnation affecting King County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Snoqualmie River near Carnation. * WHEN...Until early tomorrow afternoon. * IMPACTS...At 56.0 feet, the Snoqualmie River will cause widespread flooding from Fall City downstream through Carnation and Duvall... inundating much of the farm land and numerous roads. * ADDITIONAL DETAILS... - At 7:15 AM PDT Saturday the stage was 57.6 feet. - Flood stage is 54.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:15 AM PDT Saturday was 57.8 feet. - Forecast...The river has crested at moderate flood and will remain in moderate flood until this evening. It will continue falling and reach below flood stage early Sunday morning. - Flood History...This crest compares to a previous crest of 57.3 feet on 12/15/1979. - http://www.weather.gov/safety/flood
INSTRUCTION: Be especially cautious at night when it is harder to recognize the dangers of flooding. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. 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 this afternoon at 500 PM PDT.
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Weather Topic: What are Contrails?
Home - Education - Cloud Types - Contrails
Next Topic: Cumulonimbus Clouds
A contrail is an artificial cloud, created by the passing of an
aircraft.
Contrails form because water vapor in the exhaust of aircraft engines is suspended
in the air under certain temperatures and humidity conditions. These contrails
are called exhaust contrails.
Another type of contrail can form due to a temporary reduction in air pressure
moving over the plane's surface, causing condensation.
These are called aerodynamic contrails.
When you can see your breath on a cold day, it is also because of condensation.
The reason contrails last longer than the condensation from your breath is
because the water in contrails freezes into ice particles.
Next Topic: Cumulonimbus Clouds
Weather Topic: What are Cumulus Clouds?
Home - Education - Cloud Types - Cumulus Clouds
Next Topic: Drizzle
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.
Next Topic: Drizzle
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