Weather Alert in Alaska
Flood Watch issued August 28 at 2:16PM AKDT until August 29 at 4:00PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley; Northern Susitna Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Susitna Valley. This includes the cities of Skwentna, Willow, Talkeetna, Trapper Creek, Petersville, Chulitna, Broad Pass, And Denali Highway. * WHEN...Through Friday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. Ponding on roadways may result in hydroplaning. * ADDITIONAL DETAILS... - A multi-day rainfall event is underway across Southcentral Alaska. Rainfall totals are generally expected to range between 2 and 4 inches for the Susitna Valley, with locally higher amounts possible... particularly in higher terrain. Rain is expected to taper off during the day on Friday, though high water is likely to persist into the weekend. - Http://www.weather.gov/safety/flood
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 Hole Punch Clouds?
Home - Education - Cloud Types - Hole Punch Clouds
Next Topic: Mammatus Clouds
A hole punch cloud is an unusual occurrence when a disk-shaped
hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.
When part of the cloud forms ice crystals, water droplets in the surrounding area
of the cloud evaporate. The effect of this process produces a large elliptical
gap in the cloud. The hole punch cloud formation is rare, but it is not specific
to any geographic area.
Other names which have been used to describe this phenomena include fallstreak hole,
skypunch, and cloud hole.
Next Topic: Mammatus Clouds
Weather Topic: What are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
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