Weather Alert in Alaska
Winter Storm Warning issued February 18 at 12:22AM AKST until February 20 at 7:00AM AKST by NWS Fairbanks AK
AREAS AFFECTED: White Mountains and High Terrain South of the Yukon River; Upper Chena River Valley; Goldstream Valley and Nenana Hills; Chatanika River Valley; Two Rivers; Fairbanks Metro Area; Nenana; Central Interior
DESCRIPTION: * WHAT...Heavy snow expected. Total snow accumulations between 6 to 10 inches. * WHERE...Central Interior, Chatanika River Valley, Fairbanks Metro Area, Goldstream Valley and Nenana Hills, Nenana, Two Rivers, Upper Chena River Valley, and White Mountains and High Terrain South of the Yukon River. * WHEN...Until 7 AM AKST Friday. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Wednesday morning and evening commutes. * ADDITIONAL DETAILS...Isolated amounts between 12 and 15 inches in areas with heavier snow showers.
INSTRUCTION: If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Visit 511.alaska.gov or call 5 1 1 for the latest road conditions.
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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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