Weather Alert in Washington
Winter Storm Watch issued March 7 at 1:50PM PST until March 9 at 11:00PM PDT by NWS Spokane WA
AREAS AFFECTED: Western Chelan County
DESCRIPTION: ...SNOW OVER STEVENS PASS SUNDAY MORNING AND AGAIN SUNDAY NIGHT THROUGH MONDAY... .A cold front will push across the Cascades Sunday morning with rain transitioning to snow over Stevens Pass. Snow will come down heavy with this transition and winter travel conditions occurring rapidly over the pass. A break in the snow will come Sunday afternoon before additional snow that is heavy at times falls Sunday night through Monday. * WHAT...For the Winter Weather Advisory, snow expected. Total snow accumulations of 3 to 6 inches. For the Winter Storm Watch, heavy snow possible. Total snow accumulations between 8 and 14 inches possible. Winds could gust as high as 55 mph. * WHERE...Stevens Pass, Holden Village, and Stehekin. * WHEN...For the Winter Weather Advisory, from 5 AM to 1 PM PDT Sunday. For the Winter Storm Watch, from Sunday afternoon through Monday evening. * IMPACTS...Winter travel conditions over Stevens Pass. Gusty winds may also result in periods of blowing snow particularly for Sunday night.
INSTRUCTION: Slow down and use caution while traveling. For the latest travel information in Washington, go to https://wsdot.wa.gov/travel Monitor the latest forecasts for updates on this situation.
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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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