Weather Alert in Iowa
Special Weather Statement issued August 12 at 12:43AM CDT by NWS Quad Cities IA IL
AREAS AFFECTED: Iowa; Keokuk; Jefferson
DESCRIPTION: At 1243 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from 7 miles north of Ottumwa Industrial Airport to near Maharishi Vedic City. Movement was north at 45 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, Sigourney, North English, Hedrick, What Cheer, Richland, Batavia, Delta, Maharishi Vedic City, Keswick, South English, Packwood, Parnell, Millersburg, Harper, Martinsburg, Kinross, Hayesville, Abingdon, and Keota.
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 are Nimbostratus Clouds?
Home - Education - Cloud Types - Nimbostratus Clouds
Next Topic: Precipitation
A nimbostratus cloud is similar to a stratus cloud in its formless,
smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud,
because it is thicker.
Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat
of moderate to heavy precipitation. In some cases, the precipitation may evaporate
before reaching the ground, a phenomenon known as virga.
Next Topic: Precipitation
Weather Topic: What is Rain?
Home - Education - Precipitation - Rain
Next Topic: Shelf Clouds
Precipitation in the form of water droplets is called rain.
Rain generally has a tendency to fall with less intensity over a greater period
of time, and when rainfall is more severe it is usually less sustained.
Rain is the most common form of precipitation and happens with greater frequency
depending on the season and regional influences. Cities have been shown to have
an observable effect on rainfall, due to an effect called the urban heat island.
Compared to upwind, monthly rainfall between twenty and forty miles downwind of
cities is 30% greater.
Next Topic: Shelf Clouds
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