THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 275 IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS
IN IOWA THIS WATCH INCLUDES 38 COUNTIES
IN CENTRAL IOWA
BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER
IN NORTHEAST IOWA
BLACK HAWK
IN SOUTH CENTRAL IOWA
APPANOOSE CLARKE DECATUR LUCAS MADISON MAHASKA MARION MONROE RINGGOLD UNION WARREN WAYNE
IN SOUTHEAST IOWA
DAVIS WAPELLO
IN SOUTHWEST IOWA
ADAIR ADAMS CASS TAYLOR
IN WEST CENTRAL IOWA
AUDUBON CALHOUN CARROLL CRAWFORD GREENE GUTHRIE SAC
THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON, AMES, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BLOOMFIELD, BOONE, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CENTERVILLE, CHARITON, CONRAD, CORNING, CORYDON, CRESTON, DENISON, DES MOINES, DIKE, DYSART, EARLHAM, EARLY, ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HUMESTON, INDIANOLA, IOWA FALLS, JEFFERSON, KNOXVILLE, LAKE CITY, LAKE VIEW, LAMONI, LENOX, LEON, MANSON, MARSHALLTOWN, MOUNT AYR, NEW MARKET, NEWTON, NORWALK, ODEBOLT, OSCEOLA, OSKALOOSA, OTTUMWA, PANORA, PELLA, PERRY, POMEROY, REINBECK, ROCKWELL CITY, SAC CITY, SCHALLER, SEYMOUR, STUART, TAMA, TOLEDO, TRAER, WALL LAKE, WATERLOO, WAUKEE, WEBSTER CITY, WELLSBURG, AND WINTERSET.
- PRIMARY THREATS INCLUDE,
SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75 MPH POSSIBLE. ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE. A TORNADO OR TWO POSSIBLE.
PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 20% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 10% PROB OF 10 OR MORE SEVERE WIND EVENTS : 50% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 30% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 10% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 70% MEAN STORM MOTION /MPH/ : E 50
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 275 IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 38 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTHEAST IOWA BLACK HAWK IN SOUTH CENTRAL IOWA APPANOOSE CLARKE DECATUR LUCAS MADISON MAHASKA MARION MONROE RINGGOLD UNION WARREN WAYNE IN SOUTHEAST IOWA DAVIS WAPELLO IN SOUTHWEST IOWA ADAIR ADAMS CASS TAYLOR IN WEST CENTRAL IOWA AUDUBON CALHOUN CARROLL CRAWFORD GREENE GUTHRIE SAC THIS INCLUDES THE CITIES OF ACKLEY, ADAIR, ADEL, ALBIA, ALLERTON, AMES, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BLOOMFIELD, BOONE, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CENTERVILLE, CHARITON, CONRAD, CORNING, CORYDON, CRESTON, DENISON, DES MOINES, DIKE, DYSART, EARLHAM, EARLY, ELDORA, EXIRA, FONTANELLE, FORT DODGE, GLADBROOK, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HUMESTON, INDIANOLA, IOWA FALLS, JEFFERSON, KNOXVILLE, LAKE CITY, LAKE VIEW, LAMONI, LENOX, LEON, MANSON, MARSHALLTOWN, MOUNT AYR, NEW MARKET, NEWTON, NORWALK, ODEBOLT, OSCEOLA, OSKALOOSA, OTTUMWA, PANORA, PELLA, PERRY, POMEROY, REINBECK, ROCKWELL CITY, SAC CITY, SCHALLER, SEYMOUR, STUART, TAMA, TOLEDO, TRAER, WALL LAKE, WATERLOO, WAUKEE, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE... SCATTERED DAMAGING WINDS AND ISOLATED SIGNIFICANT GUSTS TO 75 MPH POSSIBLE. ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE. A TORNADO OR TWO POSSIBLE. PROBABILITY TABLE: PROB OF 2 OR MORE TORNADOES : 20% PROB OF 1 OR MORE STRONG /EF2-EF5/ TORNADOES : 10% PROB OF 10 OR MORE SEVERE WIND EVENTS : 50% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 50% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 30% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 10% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 70% MEAN STORM MOTION /MPH/ : E 50
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WHAT: Flash flooding caused by excessive rainfall continues to be possible.
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WHERE: Portions of central, north central, northeast, northwest, south central, southwest, and west central Iowa, including the following counties, in central Iowa, Boone, Dallas, Grundy, Hamilton, Hardin, Jasper, Marshall, Polk, Poweshiek, Story, Tama and Webster. In north central Iowa, Butler, Cerro Gordo, Franklin, Hancock, Humboldt, Kossuth, Winnebago, Worth and Wright. In northeast Iowa, Black Hawk and Bremer. In northwest Iowa, Emmet, Palo Alto and Pocahontas. In south central Iowa, Madison, Mahaska, Marion and Warren. In southwest Iowa, Adair and Cass. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac.
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WHEN: Through this evening.
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IMPACTS: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas.
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ADDITIONAL DETAILS:
- 3 to 5 inches of rain have already fallen over portions of northern and north central Iowa. Slow moving storms with efficient rainfall rates will continue through the early morning hours, and could impact the morning commute.
* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of central, north central, northeast, northwest, south central, southwest, and west central Iowa, including the following counties, in central Iowa, Boone, Dallas, Grundy, Hamilton, Hardin, Jasper, Marshall, Polk, Poweshiek, Story, Tama and Webster. In north central Iowa, Butler, Cerro Gordo, Franklin, Hancock, Humboldt, Kossuth, Winnebago, Worth and Wright. In northeast Iowa, Black Hawk and Bremer. In northwest Iowa, Emmet, Palo Alto and Pocahontas. In south central Iowa, Madison, Mahaska, Marion and Warren. In southwest Iowa, Adair and Cass. In west central Iowa, Audubon, Calhoun, Carroll, Crawford, Greene, Guthrie and Sac. * WHEN...Through this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - 3 to 5 inches of rain have already fallen over portions of northern and north central Iowa. Slow moving storms with efficient rainfall rates will continue through the early morning hours, and could impact the morning commute.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. For the latest river and stream observations and forecasts refer to weather.gov/desmoines/water.
FFWDMX
The National Weather Service in Des Moines has issued a
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Flash Flood Warning for, Southern Boone County in central Iowa, Dallas County in central Iowa, Northwestern Jasper County in central Iowa, Marshall County in central Iowa, Polk County in central Iowa, Southeastern Story County in central Iowa, Southeastern Greene County in west central Iowa, Northeastern Guthrie County in west central Iowa,
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Until 1030 AM CDT Tuesday.
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At 422 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 2 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD,Flash flooding caused by thunderstorms.
SOURCE,Radar and automated gauges.
IMPACT,Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.
- Some locations that will experience flash flooding include, Des Moines, West Des Moines, Ankeny, Urbandale, Marshalltown, Johnston, Clive, Newton, Altoona, Waukee, Pleasant Hill, Grimes, Perry, Adel, Windsor Heights, Bondurant, Polk City, Huxley, Saylorville and Madrid.
FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for... Southern Boone County in central Iowa... Dallas County in central Iowa... Northwestern Jasper County in central Iowa... Marshall County in central Iowa... Polk County in central Iowa... Southeastern Story County in central Iowa... Southeastern Greene County in west central Iowa... Northeastern Guthrie County in west central Iowa... * Until 1030 AM CDT Tuesday. * At 422 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. Additional rainfall amounts of 2 to 3 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Des Moines, West Des Moines, Ankeny, Urbandale, Marshalltown, Johnston, Clive, Newton, Altoona, Waukee, Pleasant Hill, Grimes, Perry, Adel, Windsor Heights, Bondurant, Polk City, Huxley, Saylorville and Madrid.
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.
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