Weather Alert in Iowa
Special Weather Statement issued August 12 at 12:13AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Jefferson; Henry; Van Buren; Lee; Scotland; Clark
DESCRIPTION: At 1213 AM CDT, Doppler radar was tracking line of heavy rain along a line extending from near Leando to near Croton. Movement was north at 55 mph. HAZARD...Winds in excess of 40 mph and minor flooding. SOURCE...Radar indicated. IMPACT...Gusty winds could cause minor tree limb damage and blow around unsecured objects. Slowing or redirecting of traffic due to ponding or flowing water. Closure of waterfront access due to flooding. Locations impacted include... Fairfield, Mount Pleasant, Kahoka, Keosauqua, Wayland, Batavia, Birmingham, Milton, Bonaparte, Salem, Libertyville, Stockport, Lockridge, Maharishi Vedic City, Wyaconda, Cantril, Packwood, Hillsboro, St. Paul, and Rome.
INSTRUCTION: If outdoors, consider seeking shelter inside a building. Torrential rainfall is occurring and may lead to localized flooding. Do not drive your vehicle through flooded roadways.
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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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