Weather Alert in Iowa
Flood Warning issued August 20 at 12:17PM CDT until August 21 at 1:00AM CDT by NWS Des Moines IA
AREAS AFFECTED: Cerro Gordo, IA; Floyd, IA; Worth, IA
DESCRIPTION: ...The Flood Warning continues for the following rivers in Iowa... Cedar River at Cedar Falls affecting Black Hawk County. Winnebago River at Mason City affecting Cerro Gordo, Floyd and Worth Counties. Shell Rock River at Shell Rock affecting Butler, Bremer and Black Hawk Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...The Winnebago River at Mason City, or from Beaver Creek near Fertile to the Shell Rock River near Rockford. * WHEN...Until just after midnight tonight. * IMPACTS...At 10.0 feet, Widespread flooding occurs at city parks. Water reaches the underside of the 12th St NE bridge at the piers. * ADDITIONAL DETAILS... - At 11:45 AM CDT Wednesday the stage was 10.1 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 7.3 feet Wednesday, August 27. - Flood stage is 10.0 feet.
INSTRUCTION: For the latest stream observations and forecasts refer to weather.gov/desmoines/water. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. River forecasts include observed precipitation plus forecast precipitation over the next 24 hours.
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Weather Topic: What are Fractus Clouds?
Home - Education - Cloud Types - Fractus Clouds
Next Topic: Freezing Rain
A fractus cloud (scud) is a fragmented, tattered cloud which has
likely been sheared off of another cloud. They are accessory clouds, meaning they
develop from parent clouds, and are named in a way which describes the original
cloud which contained them.
Fractus clouds which have originated from cumulus clouds are referred to as
cumulus fractus, while fractus clouds which have originated from stratus clouds
are referred to as stratus fractus. Under certain conditions a fractus cloud might
merge with another cloud, or develop into a cumulus cloud, but usually a
fractus cloud seen by itself will dissipate rapidly.
They are often observed on the leading and trailing edges of storm clouds,
and are a display of wind activity.
Next Topic: Freezing Rain
Weather Topic: What is Graupel?
Home - Education - Precipitation - Graupel
Next Topic: Hail
Graupel is a form of precipitation that is created by atmospheric conditions
which cause supercooled water droplets to contact snow crystals and freeze to
their surface.
Sometimes known as soft hail or snow pellets, graupel is delicate and easily
destroyed by touch. Whereas hail usually falls during severe weather, graupel
doesn't require such conditions to form, and can form in mild precipitation
similar to situations which produce snowfall.
Next Topic: Hail
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