At 845 AM CDT, Doppler radar was tracking strong thunderstorms along a line extending from near Bertram to near Solon. Movement was northeast at 40 mph. HAZARD. Wind gusts up to 50 mph and penny size hail. SOURCE. Radar indicated. IMPACT. Strong winds could break small tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include. Anamosa, Mechanicsville, Stanwood, Coralville, Mount Vernon, Monticello, Lisbon, Solon, Springville, Olin, Wyoming, Bertram, Martelle, Onslow, Morley, Center Junction, Lake Macbride State Park, Stone City, Viola, and Langworthy.

The Flood Watch continues for the following rivers in Iowa. Black Hawk Creek at Hudson affecting Black Hawk county. * WHAT. Flooding is possible. * WHERE. The Black Hawk Creek at Hudson, or from the Black Hawk-Grundy County line. to the Cedar River in Waterloo. * WHEN. From Wednesday evening to late Thursday morning. * IMPACTS. At 14.0 feet, Water affects Watters Rd. Some residential evacuations may be needed. Water also affects Ridgeway Ave at US 63 in Waterloo. * ADDITIONAL DETAILS. - At 2:45 AM CDT Tuesday the stage was 8.4 feet. - Forecast. Flood stage may be reached late tomorrow evening. - Flood stage is 14.0 feet.

* 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.

* WHAT. Flooding caused by excessive rainfall is possible. * WHERE. Portions of east central and northeast Iowa, including the following counties: in east central Iowa, Benton, Iowa, Johnson and Linn. In northeast Iowa, Buchanan and Delaware. * WHEN. Through this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS. - http://www.weather.gov/safety/flood

* WHAT. Flash Flooding caused by excessive rainfall is possible. * WHERE. Portions of Iowa, including the following counties, Allamakee, Chickasaw, Clayton, Fayette, Floyd, Howard, Mitchell and Winneshiek and southeast Minnesota, including the following counties, Dodge, Fillmore, Houston, Mower, Olmsted, Wabasha and Winona. * WHEN. Through this evening. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Multiple rounds of showers and thunderstorms will continue today. Some heavy rainfall has already occurred over parts of Dodge and Mower counties in southeast Minnesota near a stationary boundary. Additional rainfall, some heavy is forecast to occur with storms this morning as deeper moisture and a storm system approaches the area. More rain overspreads the area again this afternoon as the storm system moves through. Due to storms repeating over the same areas, locally heavy rain and flash flooding could occur. - http://www.weather.gov/safety/flood

The National Weather Service in Quad Cities IA IL has issued a Flood Watch for the following rivers in Iowa. Iowa River at Marengo affecting Iowa and Benton Counties. * WHAT. Flooding is possible. * WHERE. Iowa River at Marengo. * WHEN. From late Tuesday night to Monday, May 27. * IMPACTS. At 15.0 feet, Water reaches the bottom of the levee surrounding Marengo. Water affects low lying agricultural land along the river * ADDITIONAL DETAILS. - At 7:00 PM CDT Monday the stage was 11.2 feet. - Forecast. Flood stage may be reached early Wednesday morning. - Flood stage is 15.0 feet

FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for. Northeastern Jasper County in central Iowa. Eastern Marshall County in central Iowa. Poweshiek County in central Iowa. Tama County in central Iowa. * Until 1230 PM CDT Tuesday. * At 626 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. As much as 4 to 5 inches of rain have fallen especially across eastern Jasper County. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is already occurring. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Radar. 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. Marshalltown, Newton, Grinnell, Toledo, Montezuma, Tama, Traer, Brooklyn, Dysart, Meskwaki Casino, Rock Creek Lake, Iowa Speedway, Gladbrook, Le Grand, Victor, Kellogg, Garwin, Gilman, Holiday Lake and Malcom.

FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for. Grundy County in central Iowa. Southeastern Hardin County in central Iowa. Northern Marshall County in central Iowa. Northern Tama County in central Iowa. Black Hawk County in northeastern Iowa. Southern Bremer County in northeastern Iowa. * Until 300 PM CDT Tuesday. * At 857 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD. Flash flooding caused by thunderstorms. SOURCE. Radar. 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. Waterloo, Cedar Falls, Waverly, Eldora, Grundy Center, Evansdale, La Porte City, Hudson, Denver, Traer, Reinbeck, Dysart, Dike, Elk Run Heights, Conrad, Uni-Dome And McLeod Center, Waterloo Municipal Airport, Crossroads Mall, Gladbrook and Janesville.

At 659 AM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. As much as 5 and 6 inches of rain have fallen across portions of northeastern Jasper County, southern Marshall County and western Tama County. Additional heavy rainfall has occurred across northwestern Poweshiek County. Flash flooding is already occurring with reports of road closures due to water over the road. HAZARD. Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE. Radar. IMPACT. Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. Some locations that will experience flash flooding include. Marshalltown, Newton, Grinnell, Toledo, Montezuma, Tama, Traer, Brooklyn, Dysart, Meskwaki Casino, Rock Creek Lake, Iowa Speedway, Gladbrook, Le Grand, Victor, Kellogg, Garwin, Gilman, Holiday Lake and Malcom.

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 13 COUNTIES IN EAST CENTRAL IOWA BENTON CEDAR IOWA JOHNSON JONES LINN IN NORTHEAST IOWA BUCHANAN DELAWARE IN SOUTHEAST IOWA HENRY IA JEFFERSON KEOKUK VAN BUREN WASHINGTON THIS INCLUDES THE CITIES OF ANAMOSA, CEDAR RAPIDS, FAIRFIELD, INDEPENDENCE, IOWA CITY, KEOSAUQUA, MANCHESTER, MARENGO, MOUNT PLEASANT, SIGOURNEY, TIPTON, VINTON, AND WASHINGTON.

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

FFWDMX The National Weather Service in Des Moines has issued a * Flash Flood Warning for. Northern Grundy County in central Iowa. Northern Hardin County in central Iowa. Southern Butler County in north central Iowa. Southern Franklin County in north central Iowa. Southeastern Wright County in north central Iowa. * Until 915 AM CDT Tuesday. * At 309 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 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. Iowa Falls, Parkersburg, Ackley, Shell Rock, Dike, Aplington, Alden, Wellsburg, Dows, New Hartford, Steamboat Rock, Stout, Geneva, Buckeye, Bradford, Popejoy, Owasa, Ackley Municipal Airport and Iowa Falls Municipal Airport.