Weather Alert in Oregon
Flood Warning issued March 14 at 5:55AM PDT by NWS Portland OR
AREAS AFFECTED: Tillamook, OR
DESCRIPTION: ...The Flood Warning continues for the following rivers in Washington...Oregon... Cowlitz River at Castle Rock affecting Cowlitz County. Wilson River near Tillamook affecting Tillamook County. Cowlitz River at Kelso affecting Cowlitz County. * WHAT...Minor flooding is occurring. * WHERE...Wilson River near Tillamook. * WHEN...Until further notice. * IMPACTS...Above 12.0 feet, minor flooding of low lying dairy and pasture land north and east of Tillamook can be expected, particularly during high tides. * ADDITIONAL DETAILS... - At 5:30 AM PDT Saturday the stage was 12.5 feet. - Bankfull stage is 10.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:30 AM PDT Saturday was 12.8 feet. - Forecast...The river has reached minor flood stage of 12.2 ft. It will then fall below flood stage late Saturday morning. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: Motorists should not attempt to drive around barricades or drive through flooded areas. Be especially cautious at night when it is harder to recognize the dangers of flooding. 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 around 1100 PDT Saturday morning.this afternoon at 500 PM PDT.
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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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