Weather Alert in Oregon
Winter Weather Advisory issued February 17 at 12:03PM PST until February 19 at 10:00AM PST by NWS Medford OR
AREAS AFFECTED: Eastern Douglas County Foothills; South Central Oregon Cascades; Siskiyou Mountains and Southern Oregon Cascades
DESCRIPTION: * WHAT...Snow expected. Additional snow accumulations 4 to 8 inches over the Cascade Foothills, except 8 to 16 inches in the mountains. Winds gusting as high as 35 mph over high and exposed terrain. * WHERE...The southern Oregon Cascades and Siskiyou Mountains, and Eastern Douglas County Foothills. Including the locations of...Toketee Falls, Steamboat, Crescent Lake, Diamond Lake, Union Creek, Howard Prairie. This also includes the following passes or notable locations... Siskiyou Pass on I-5 at 4310 ft. Lake of the Woods on 140 at 5070 ft. Diamond Lake Junction on state highways 230 & 138 at 4478 ft. Mt. Ashland ski road and lodge at 6500 ft. Caves National Monument near highway 46 at 4000 ft. Willamette Pass on state highway 58 at 5090 ft. * WHEN...Until 10 AM PST Thursday. * IMPACTS...Travel may be difficult and there may be delays in your commute. The hazardous conditions could impact the evening and morning commutes. * ADDITIONAL DETAILS...Snow will be lighter tonight into Wednesday, then increase again Wednesday night into Thursday. Visit weather.gov/mfr/winter for additional snow probabilities
INSTRUCTION: Slow down and use caution while traveling. Call 511 or visit tripcheck.com for road information.
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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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