Weather Alert in Alaska
Flood Warning issued August 26 at 4:19AM AKDT until August 28 at 4:00AM AKDT by NWS Fairbanks AK
AREAS AFFECTED: South Slopes Of The Central Brooks Range
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Near Coldfoot Alaska along the Dalton Highway between mile markers 175 and 176. * WHEN...Until 400 AM AKDT Thursday. * IMPACTS...Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS... - At 411 AM AKDT, river gauge reports indicate rises in water levels from heavy rain across the warned area. Flooding is ongoing or expected to begin shortly. Between 3 and 3.5 inches of rain have fallen. Additional rainfall amounts of 1.5 to 2.5 inches are possible. - For Slate Creek at Coldfoot: At 3:15am the stage was 20.4 feet. At 17.5 feet: Action stage At 18.7 feet: Minor flood stage At 20.2 feet: Moderate flood stage - 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 Shelf Clouds?
Home - Education - Cloud Types - Shelf Clouds
Next Topic: Sleet
A shelf cloud is similar to a wall cloud, but forms at the front
of a storm cloud, instead of at the rear, where wall clouds form.
A shelf cloud is caused by a series of events set into motion by the advancing
storm; first, cool air settles along the ground where precipitation has just fallen.
As the cool air is brought in, the warmer air is displaced, and rises above it,
because it is less dense. When the warmer air reaches the bottom of the storm cloud,
it begins to cool again, and the resulting condensation is a visible shelf cloud.
Next Topic: Sleet
Weather Topic: What is Snow?
Home - Education - Precipitation - Snow
Next Topic: Stratocumulus Clouds
Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake,
has unique characteristics, but all of them grow in a hexagonal structure.
Snowfall can last for sustained periods of time and result in significant buildup
of snow on the ground.
On the earth's surface, snow starts out light and powdery, but as it begins to melt
it tends to become more granular, producing small bits of ice which have the consistency of
sand. After several cycles of melting and freezing, snow can become very dense
and ice-like, commonly known as snow pack.
Next Topic: Stratocumulus Clouds
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