Weather Alert in Alaska
Flood Advisory issued August 29 at 1:31PM AKDT until August 30 at 1:30PM AKDT by NWS Anchorage AK
AREAS AFFECTED: Lower Matanuska Valley; Southern Susitna Valley; Central Susitna Valley; Northern Susitna Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...The following areas, Central Susitna Valley, Lower Matanuska Valley, Northern Susitna Valley and Southern Susitna Valley. * WHEN...Until 130 PM AKDT Saturday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Some low-water crossings may become impassable. River or stream flows are elevated. * ADDITIONAL DETAILS... - At 129 PM AKDT, river gauge reports indicate rises in water levels from heavy rain across the advisory area. Minor flooding is ongoing or expected to begin shortly. - Expect rivers and streams to continue to rise through Friday night and crest Saturday morning. - http://www.weather.gov/safety/flood
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. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.
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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.
Next Topic: Cumulus Clouds
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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