Weather Alert in Washington
Flood Warning issued March 20 at 4:16PM PDT until March 21 at 2:42AM PDT by NWS Seattle WA
AREAS AFFECTED: Whatcom, WA
DESCRIPTION: ...The National Weather Service in Seattle WA has issued a Flood Warning for the following rivers in Washington... Nooksack River At North Cedarville affecting Whatcom County. .Area rivers will continue to rise even as the rain comes to an end. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Nooksack River at North Cedarville. * WHEN...From this afternoon to just after midnight tonight. * IMPACTS...At 146.5 feet, the Nooksack River will cause shallow flooding of low pasture lands along the river downstream through Lynden. * ADDITIONAL DETAILS... - At 3:30 PM PDT Friday the stage was 146.6 feet. - Flood stage is 146.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:30 PM PDT Friday was 146.6 feet. - Forecast...The river is expected to fall below flood stage late this afternoon and continue falling to 140.8 feet late Monday morning. - Flood History...This crest compares to a previous crest of 146.3 feet on 10/17/2009. - http://www.weather.gov/safety/flood
INSTRUCTION: 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 evening at 1115 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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