Weather Alert in Washington
Winter Weather Advisory issued February 22 at 2:44PM PST until February 23 at 1:00PM PST by NWS Pendleton OR
AREAS AFFECTED: Upper Slopes of the Eastern Washington Cascades Crest
DESCRIPTION: * WHAT...Snow. Additional snow accumulations up to 14 to 20 inches above 5000 ft. Accumulations of 4 to 8 inches around the Pass Levels. * WHERE...Upper Slopes of the Eastern Washington Cascades Crest. * WHEN...Until 1 PM PST Monday. * IMPACTS...Relatively warmer road surface temperatures will limit the impacts during the daytime hours as snow can melt of the most heavily traveled highways. Periods of moderate to heavy snowfall rates will create slick roads creating very difficult driving conditions at night.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions can be obtained by visiting the website wsdot.wa.gov/travel.
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Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
Next Topic: Cumulus Clouds
Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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