Weather Alert in Washington
Flood Watch issued March 24 at 5:16PM PDT until March 26 at 12:00PM PDT by NWS Pendleton OR
AREAS AFFECTED: Yakima Valley
DESCRIPTION: ...The National Weather Service in Pendleton OR has issued a Flood Watch for the following rivers in Washington... Yakima River near Parker affecting Yakima Valley zone. For the Yakima River...including Horlick, Umtanum, Parker, Kiona... flooding is possible. * WHAT...Flooding is possible. * WHERE...Yakima River near Parker. * WHEN...From Wednesday evening to early Thursday afternoon. * IMPACTS...At 10.0 feet, There will be minor flooding of pastures and farm roads adjacent to the river. * ADDITIONAL DETAILS... - At 3:30 PM PDT Tuesday the stage was 7.9 feet. - Forecast...Flood stage may be reached late Wednesday evening. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
INSTRUCTION: If you are in the watch area, remain alert to possible flooding. Additional information is available at www.weather.gov/pdt.
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Weather Topic: What are Wall Clouds?
Home - Education - Cloud Types - Wall Clouds
Next Topic: Altocumulus Clouds
A wall cloud forms underneath the base of a cumulonimbus cloud,
and can be a hotbed for deadly tornadoes.
Wall clouds are formed by air flowing into the cumulonimbus clouds, which can
result in the wall cloud descending from the base of the cumulonimbus cloud, or
rising fractus clouds which join to the base of the storm cloud as the wall cloud
takes shape.
Wall clouds can be very large, and in the Northern Hemisphere they generally
form at the southern edge of cumulonimbus clouds.
Next Topic: Altocumulus Clouds
Weather Topic: What are Altostratus Clouds?
Home - Education - Cloud Types - Altostratus Clouds
Next Topic: Cirrocumulus Clouds
Altostratus clouds form at mid to high-level altitudes
(between 2 and 7 km) and are created by a warm, stable air mass which causes
water vapor
to condense as it rise through the atmosphere. Usually altostratus clouds are
featureless sheets characterized by a uniform color.
In some cases, wind punching through the cloud formation may give it a waved
appearance, called altostratus undulatus. Altostratus clouds
are commonly seen with other cloud formations accompanying them.
Next Topic: Cirrocumulus Clouds
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