Weather Alert in Alaska
Flood Advisory issued August 29 at 1:11PM AKDT until August 30 at 1:15AM AKDT by NWS Anchorage AK
AREAS AFFECTED: Cordova
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Eyak Lake and river near Cordova. * WHEN...Until 115 AM AKDT Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Some low-water crossings may become impassable. * ADDITIONAL DETAILS... - At 109 PM AKDT, Heavy rain over the past 12 hours has resulted in rises in water levels across the advisory area. Minor flooding is ongoing or expected to begin shortly, especially near Eyak Lake and Eyak River.
INSTRUCTION: Stay tuned to further developments by listening to your local radio, television, or NOAA Weather Radio for further information. Be aware of your surroundings and do not drive on flooded roads.
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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
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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