Weather Alert in Alaska
Flood Warning issued August 28 at 10:52AM AKDT until August 31 at 10:00AM AKDT by NWS Anchorage AK
AREAS AFFECTED: Western Susitna Valley; Southern Susitna Valley; Central Susitna Valley
DESCRIPTION: * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...the Yentna River and tributaries at and above Lake Creek. * WHEN...Until 1000 AM AKDT Sunday. * IMPACTS...At 20.5 feet, water begins to inundate several low-lying cabins. At 22.0 feet, more extensive flooding of cabins, resorts, and private property. * ADDITIONAL DETAILS... - At 1048 AM AKDT, Between 1 and 2 inches of rain have fallen. The river gage at Lake Creek and other gages across the Susitna Valley show considerable rises across area rivers. Additional rainfall amounts of 1 to 2 are expected. For Yentna River at Lake Creek: At 9:00am the stage was 19.7 feet and rising. Flood Stage is 20.5 feet. Forecast: A crest around 22.8 feet is expected around Friday night into early Saturday morning with an estimated crest time at 4 am Saturday. The river will then begin to fall and is expected to go below flood stage late Saturday to early Sunday morning. This may equal or exceed the August 2024 crest of 22.4 feet. - 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.
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Weather Topic: What is Sleet?
Home - Education - Precipitation - Sleet
Next Topic: Snow
Sleet is a form of precipitation in which small ice pellets are the primary
components. These ice pellets are smaller and more translucent than hailstones,
and harder than graupel. Sleet is caused by specific atmospheric conditions and
therefore typically doesn't last for extended periods of time.
The condition which leads to sleet formation requires a warmer body of air to be
wedged in between two sub-freezing bodies of air. When snow falls through a warmer
layer of air it melts, and as it falls through the next sub-freezing body of air
it freezes again, forming ice pellets known as sleet. In some cases, water
droplets don't have time to freeze before reaching the surface and the result is
freezing rain.
Next Topic: Snow
Weather Topic: What are Stratocumulus Clouds?
Home - Education - Cloud Types - Stratocumulus Clouds
Next Topic: Stratus Clouds
Stratocumulus clouds are similar to altocumulus clouds in their
fluffy appearance, but have a slightly darker shade due to their additional mass.
A good way to distinguish the two cloud types is to hold your hand out and measure
the size of an individual cloud; if it is the size of your thumb it is generally
an altocumulus cloud, if it is the size of your hand it is generally a
stratocumulus cloud.
It is uncommon for stratocumulus clouds to produce precipitation, but if they do
it is usually a light rain or snow.
Next Topic: Stratus Clouds
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