Weather Alert in Iowa
Flood Watch issued July 30 at 10:21AM CDT until August 2 at 7:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Humboldt
DESCRIPTION: ...The National Weather Service in Des Moines IA has issued a Flood Watch for the following rivers in Iowa... Des Moines River at Fort Dodge affecting Webster, Humboldt and Hamilton Counties. West Fork Des Moines River at Humboldt affecting Humboldt County. East Fork Des Moines River near Algona affecting Humboldt and Kossuth Counties. * WHAT...Flooding is possible. * WHERE...The West Fork Des Moines River at Humboldt, or from Pilot Creek near Bradgate to the East Fork Des Moines River. * WHEN...From Thursday evening to Saturday morning. * IMPACTS...At 10.0 feet, Water affects the Cottonwood trail from the dam south. * ADDITIONAL DETAILS... - At 9:45 AM CDT Wednesday the stage was 7.3 feet. - Forecast...Flood stage may be reached late tomorrow evening. - Flood stage is 10.0 feet.
INSTRUCTION: For the latest waterway observations and forecasts refer to weather.gov/desmoines/water. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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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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