Weather Alert in Iowa
Flood Warning issued August 19 at 11:06AM CDT until August 20 at 7:00AM CDT by NWS La Crosse WI
AREAS AFFECTED: Allamakee, IA
DESCRIPTION: ...The Flood Warning is extended for the following rivers in Iowa... Upper Iowa River at Dorchester Hwy 76 affecting Allamakee County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Upper Iowa River at Dorchester Hwy 76. * WHEN...Until tomorrow morning. * IMPACTS...At 15.0 feet, Significant agricultural flooding begins. * ADDITIONAL DETAILS... - At 10:00 AM CDT Tuesday the stage was 14.7 feet. - Bankfull stage is 14.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Tuesday was 16.9 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 8.2 feet Tuesday, August 26. - Flood stage is 14.0 feet. - Flood History...This crest compares to a previous crest of 14.7 feet on 07/24/2022. - http://www.weather.gov/safety/flood
INSTRUCTION: Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional river and weather information is available at www.weather.gov/lacrosse. The next statement will be issued this evening by 1115 PM CDT.
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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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