The flash flood threat continues this morning. The greatest risk is between Iowa Highway 92 and Iowa Highway 2, centered on U.S. Highway
- Flash flooding is possible outside that band especially in urban areas.
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WHAT: Flooding caused by excessive rainfall continues to be possible.
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WHERE: Portions of central, south central, and southeast Iowa, including the following counties, in central Iowa, Jasper and Poweshiek. In south central Iowa, Appanoose, Clarke, Decatur, Lucas, Mahaska, Marion, Monroe, Ringgold, Warren and Wayne. In southeast Iowa, Davis and Wapello.
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WHEN: Until 11 AM CDT this morning.
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IMPACTS: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.
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ADDITIONAL DETAILS:
- Training storms with heavy rainfall may lead to localized flash flooding early this morning.
The flash flood threat continues this morning. The greatest risk is between Iowa Highway 92 and Iowa Highway 2, centered on U.S. Highway 34. Flash flooding is possible outside that band especially in urban areas. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, south central, and southeast Iowa, including the following counties, in central Iowa, Jasper and Poweshiek. In south central Iowa, Appanoose, Clarke, Decatur, Lucas, Mahaska, Marion, Monroe, Ringgold, Warren and Wayne. In southeast Iowa, Davis and Wapello. * WHEN...Until 11 AM CDT this morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Training storms with heavy rainfall may lead to localized flash flooding early this morning.
For the latest stream observations and forecasts refer to weather.gov/desmoines/water.
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 311 UNTIL 3 PM CDT THIS AFTERNOON WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM WATCH 310. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS
IN IOWA THE NEW WATCH INCLUDES 10 COUNTIES
IN CENTRAL IOWA
JASPER POWESHIEK
IN SOUTH CENTRAL IOWA
APPANOOSE LUCAS MAHASKA MARION MONROE WAYNE
IN SOUTHEAST IOWA
DAVIS WAPELLO
THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD, CENTERVILLE, CHARITON, CORYDON, GRINNELL, HUMESTON, KNOXVILLE, NEWTON, OSKALOOSA, OTTUMWA, PELLA, AND SEYMOUR.
- PRIMARY THREATS INCLUDE,
A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE. WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 80 MPH POSSIBLE. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE.
PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 50% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 30% PROB OF 10 OR MORE SEVERE WIND EVENTS : 90% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95% MEAN STORM MOTION /MPH/ : E 50
THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 311 UNTIL 3 PM CDT THIS AFTERNOON WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM WATCH 310. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS IN IOWA THE NEW WATCH INCLUDES 10 COUNTIES IN CENTRAL IOWA JASPER POWESHIEK IN SOUTH CENTRAL IOWA APPANOOSE LUCAS MAHASKA MARION MONROE WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO THIS INCLUDES THE CITIES OF ALBIA, ALLERTON, BLOOMFIELD, CENTERVILLE, CHARITON, CORYDON, GRINNELL, HUMESTON, KNOXVILLE, NEWTON, OSKALOOSA, OTTUMWA, PELLA, AND SEYMOUR. * PRIMARY THREATS INCLUDE... A FEW TORNADOES AND A COUPLE INTENSE TORNADOES POSSIBLE. WIDESPREAD DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 80 MPH POSSIBLE. SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 50% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 30% PROB OF 10 OR MORE SEVERE WIND EVENTS : 90% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 40% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 30% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : >95% MEAN STORM MOTION /MPH/ : E 50
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