Weather Alert in Oregon
Winter Weather Advisory issued February 15 at 1:38PM PST until February 17 at 10:00PM PST by NWS Pendleton OR
AREAS AFFECTED: East Slopes of the Oregon Cascades
DESCRIPTION: * WHAT...Snow expected. Total snow accumulations between 5 and 10 inches. * WHERE...East Slopes of the Oregon Cascades above 4000 feet elevation. * WHEN...From 10 PM this evening to 10 PM PST Tuesday. * IMPACTS...Travel could be difficult due to periods of moderate to heavy snow.
INSTRUCTION: Slow down and use caution while traveling. The latest road conditions can be obtained by visiting tripcheck.com online, or by calling 5 1 1. Be prepared for slippery roads. Slow down and use caution while driving. If you are going outside, watch your first few steps taken on stairs, sidewalks, and driveways. These surfaces could be icy and slippery, increasing your risk of a fall and injury.
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North America Water Vapor (Moisture)
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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
Weather Topic: What are Cirrostratus Clouds?
Home - Education - Cloud Types - Cirrostratus Clouds
Next Topic: Cirrus Clouds
Cirrostratus clouds are high, thin clouds that form above
20,000 feet and are made mostly of ice crystals. They sometimes look like giant
feathers, horse tails, or curls of hair in the sky.
These clouds are pushed by the jet stream and can move at high speeds reaching
100 mph.
What do they indicate?
They indicate that a precipitation is likely within 24 hours.
Next Topic: Cirrus Clouds
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