Weather Alert in Alaska
Flood Advisory issued August 27 at 2:48PM AKDT until August 29 at 12:00PM AKDT by NWS Fairbanks AK
AREAS AFFECTED: Upper Koyukuk Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is occurring. * WHERE...Koyukuk River at Allakaket. * WHEN...Until noon AKDT Friday. * IMPACTS...Minor flooding in low-lying and poorly drained areas. Water over roadways may cut off access to the downtown area and possibly to the runway. * ADDITIONAL DETAILS... - As of Wednesday morning,the public has reported minor flooding in Allakaket with river levels expected to continue to rise through Thursday morning. Between 3 and 5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible through Friday. The Koyukuk River at Allakaket is expected to crest late Wednesday or early Thursday. The timing of the crest of the Alatna River at the confluence with the Koyukuk River is uncertain due to the lack of streamgage data, but could occur coincidentally with the Koyukuk crest. - http://www.weather.gov/aprfc
INSTRUCTION: Continue to monitor river levels and take appropriate actions to protect lives and property.
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Weather Topic: What are Stratus Clouds?
Home - Education - Cloud Types - Stratus Clouds
Next Topic: Wall Clouds
Stratus clouds are similar to altostratus clouds, but form at a
lower altitude and are identified by their fog-like appearance, lacking the
distinguishing features of most clouds.
Stratus clouds are wider than most clouds, and their base has a smooth, uniform
look which is lighter in color than a nimbostratus cloud.
The presence of a stratus cloud indicates the possibility of minor precipitation,
such as drizzle, but heavier precipitation does not typically arrive in the form
of a stratus cloud.
Next Topic: Wall Clouds
Weather Topic: What are Altocumulus Clouds?
Home - Education - Cloud Types - Altocumulus Clouds
Next Topic: Altostratus Clouds
Similar to cirrocumulus clouds, altocumulus clouds are
characterized by cloud patches. They are distinguished by larger cloudlets
than cirrocumulus clouds but are still smaller than stratocumulus clouds.
Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km)
and may resemble, at times, the shape of a flying saucer.
These uncommon formations, called altocumulus lenticularis, are created by uplift
in the atmosphere and are most often seen in close proximity to mountains.
Next Topic: Altostratus Clouds
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