Weather Alert in Alaska
Flood Watch issued August 29 at 10:42AM AKDT until August 31 at 12:00PM AKDT by NWS Fairbanks AK
AREAS AFFECTED: South Slopes of the Western Brooks Range; Noatak Valley; Upper Kobuk Valleys; Lower Koyukuk Valley; Upper Koyukuk Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Including the following areas, Noatak, Kobuk, and Koyukuk Rivers * WHEN...Through Sunday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Area creeks and streams are running high and could flood with continued rain. Flooding may occur in poorly drained areas. Rainfall is expected to taper off this evening. * ADDITIONAL DETAILS... - Heavy rainfall that caused rapid rises in headwater streams will continue to cause high water levels on main stem rivers through the weekend. The Koyukuk River will likely crest at Allakaket this evening with minor flooding. It is expected to crest in minor flood stage downstream at Hughes tomorrow evening. The Kobuk River has crested at Kobuk and will likely stay high through the weekend due to continued rainfall. - Http://www.weather.gov/aprfc
INSTRUCTION: Persons living along streams should stay alert and be prepared to take action if a warning or advisory is issued, or flooding is observed. You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. 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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