Weather Alert in Alaska
Flood Advisory issued September 5 at 11:59AM AKDT until September 6 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 Saturday. * IMPACTS...Minor flooding in low-lying and poorly drained areas. * ADDITIONAL DETAILS... - As of Friday morning, there have been reports of some low lying roads being inundated. - The streamgage on the Koyukuk River below the John River shows water levels have been fluctuating less that a foot over the last 5 days and are not showing a significant rising or dropping trend. Additional rain accumulations of 0.5 to 1.0 inches is expected Saturday afternoon through Sunday which is expected to keep water levels steady at Allakaket for the next few days. - Http://www.weather.gov/aprfc
INSTRUCTION: Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information.
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Weather Topic: What are Cumulonimbus Clouds?
Home - Education - Cloud Types - Cumulonimbus Clouds
Next Topic: Cumulus Clouds
The final form taken by a growing cumulus cloud is the
cumulonimbus cloud, which is very tall and dense.
The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although
most commonly they stop growing at an altitude of 6 km.
Even small cumulonimbus clouds appear very large in comparison to other cloud types.
They can signal the approach of stormy weather, such as thunderstorms or blizzards.
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Weather Topic: What is Drizzle?
Home - Education - Precipitation - Drizzle
Next Topic: Evaporation
Drizzle is precipitation in the form of water droplets which are
smaller than raindrops.
Drizzle is characterized by fine, gently falling droplets and typically does not
impact human habitation in a negative way. The exception to this is freezing drizzle,
a condition where drizzle freezes immediately upon reaching earth's surface.
Freezing drizzle is still less dangerous than freezing rain, but can
potentially result in hazardous road conditions.
Next Topic: Evaporation
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