Weather Alert in Alaska
Flood Warning issued August 29 at 11:04PM AKDT until August 30 at 11:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Central Susitna Valley; Northern Susitna Valley
DESCRIPTION: * WHAT...Flooding caused by previous excessive rainfall is expected. * WHERE...Talkeetna River. * WHEN...Until 1100 PM AKDT Saturday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 1052 PM AKDT, river gauge reports indicate rises in water levels from previous days heavy rain across the warned area. Flooding is ongoing or expected to begin shortly, especially near and along the Talkeetna River. - For Talkeetna River Upstream of Talkeetna: At 9:45pm the stage was 12.1 feet. Flood Stage is 12.5 feet. Forecast: A crest around 12.7 feet is expected around 4:00am Saturday. - For Talkeetna River at the Talkeetna Railroad Bridge: At 10:00pm the stage was 14.82 feet. Major Flood Stage is 15.0 feet. The river is expected to crest early Saturday just above Major Flood Stage then begin to fall. - For Susitna River near Sunshine: At 10:00pm the stage was 25.9 feet. Flood Stage is 24.5 feet. Forecast: A crest around 25.4 feet is expected around 10:00am Saturday. - Http://www.weather.gov/safety/flood
INSTRUCTION: Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information.
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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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