Weather Alert in Alaska
Flood Warning issued August 31 at 9:26PM AKDT until September 1 at 12:00PM AKDT by NWS Fairbanks AK
AREAS AFFECTED: Upper Koyukuk Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues. * WHERE...Koyukuk River near Allakaket. * WHEN...Until noon AKDT Monday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is occurring. * ADDITIONAL DETAILS... - Since Wednesday the Koyukuk River has been inundating roads in downtown Allakaket - River levels appear to have stabilized, but inundation of low lying roads is expected to continue. The streamgage on the Koyukuk River below the John River has shown over a foot of water level drop in the last 12 hours. The Middle and South Forks of the Koyukuk are also showing decreasing water levels. Water levels at Allakaket should start showing a slow recession tonight. This is encouraging as over an inch of rain is forecast for the south slopes of the Brooks Range through Tuesday. For context, the highest water levels from this event are about 7 ft lower in Allakaket than the 1994 flood. - Low lying roads are currently flooded and airport access may be cut off. - http://www.weather.gov/aprfc
INSTRUCTION: N/A
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Weather Topic: What are Cirrocumulus Clouds?
Home - Education - Cloud Types - Cirrocumulus Clouds
Next Topic: Cirrostratus Clouds
Cirrocumulus clouds form at high altitudes (usually around 5 km)
and have distinguishing characteristics displayed in a fine layer of
small cloud patches. These small cloud patches are sometimes referred to as
"cloudlets" in relation to the whole cloud formation.
Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the
water droplets in the cloud freeze into ice crystals and the cloud becomes a
cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud
formations generally pass rapidly.
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Weather Topic: What are Cirrus Clouds?
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Next Topic: Condensation
Cirrus clouds are high-level clouds that occur above 20,000 feet
and are composed mainly of ice crystals.
They are thin and wispy in appearance.
What do they indicate?
They are often the first sign of an approaching storm.
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