Weather Alert in Washington
Flood Watch issued March 19 at 4:32PM PDT until March 20 at 5:00PM PDT by NWS Seattle WA
AREAS AFFECTED: King, WA; Skagit, WA; Snohomish, WA; Whatcom, WA
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest and west central Washington, including the following counties, in northwest Washington, Skagit and Whatcom. In west central Washington, King and Snohomish. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - An additional 2 to 4 inches of rain are expected over the North and Central Cascades through Friday. Rainfall rates in the mountains will peak into Friday. This will create a double (or even triple) crest scenario on Friday, pushing some rivers back above flood stage. The Snoqualmie and Snohomish Rivers will likely remain above flood stage. The rivers most likely to go back above flood stage Friday are the Skykomish and Tolt Rivers. New rivers likely to exceed flood stage are the Stillaguamish and Skagit Rivers, with the latest forecast showing the Skagit River to rise into Moderate Flood stage and just below Major Flood stage. - http://www.weather.gov/safety/flood
INSTRUCTION: You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.
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Weather Topic: What are Cirrus Clouds?
Home - Education - Cloud Types - Cirrus Clouds
Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
Next Topic: Condensation
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
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