Recent rainfall has saturated soils in portions of central Iowa with creeks and streams already running high. The potential for additional heavy rainfall this morning into early afternoon may lead to flash flooding. * WHAT. Flash flooding caused by excessive rainfall is 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 and Wright. In northeast Iowa, Black Hawk and Bremer. In northwest Iowa, 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. Until 1 PM CDT this afternoon. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS. - Heavy rainfall over a short period of time may lead to flash flooding in the watch area.

The Flood Warning is extended for the following rivers in Iowa. Little Sioux River at Cherokee affecting Cherokee County. Ocheyedan River near Spencer affecting Clay County. Little Sioux River at Spencer affecting Clay County. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Little Sioux River at Spencer. * WHEN. Until further notice. * IMPACTS. At 10.0 feet, the right bank overflows, and minor flooding of the Spencer city park and some rural agricultural areas begins. * ADDITIONAL DETAILS. - At 8:15 AM CDT Thursday the stage was 11.5 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:15 AM CDT Thursday was 11.6 feet. - Forecast. The river is expected to rise to a crest of 11.7 feet this afternoon and then begin falling into the weekend. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning continues for the following rivers in Iowa. Iowa River at Marshalltown affecting Marshall County. Iowa River near Tama Hwy E49 affecting Tama County. Cedar River at Waterloo affecting Black Hawk County. Des Moines River at Fort Dodge affecting Webster County. East Fork Des Moines River near Algona affecting Humboldt and Kossuth Counties. . The Flood Warning is extended for the following rivers in Iowa. Cedar River at Cedar Falls affecting Black Hawk County. Black Hawk Creek at Hudson affecting Black Hawk County. Des Moines River at Des Moines SE 6th St affecting Polk County. Des Moines River near Stratford affecting Webster, Boone and Hamilton Counties. .Heavy rain from earlier in the week has produced mostly minor flooding on area rivers. * WHAT. Minor flooding is forecast. * WHERE. The East Fork Des Moines River near Algona, or from Buffalo Creek near Burt. to Lotts Creek near Livermore. * WHEN. Until early Sunday morning. * IMPACTS. At 17.0 feet, Water threatens US 169 south of Algona and affects some rural roads. * ADDITIONAL DETAILS. - At 7:15 PM CDT Thursday the stage was 16.4 feet. - Forecast. The river is expected to rise above flood stage early Saturday morning to a crest of 17.1 feet Saturday morning. It will then fall below flood stage Saturday evening. - Flood stage is 17.0 feet.

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 300 IN EFFECT UNTIL 10 AM CDT THIS MORNING FOR THE FOLLOWING AREAS IN IOWA THIS WATCH INCLUDES 48 COUNTIES IN CENTRAL IOWA BOONE DALLAS GRUNDY HAMILTON HARDIN JASPER MARSHALL POLK POWESHIEK STORY TAMA WEBSTER IN NORTH CENTRAL IOWA BUTLER CERRO GORDO FRANKLIN HANCOCK HUMBOLDT KOSSUTH WRIGHT IN NORTHEAST IOWA BLACK HAWK BREMER IN NORTHWEST IOWA PALO ALTO POCAHONTAS 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, ALGONA, ALLERTON, ALLISON, AMES, APLINGTON, ATLANTIC, AUDUBON, BAYARD, BEDFORD, BELMOND, BLOOMFIELD, BOONE, BRITT, CARLISLE, CARROLL, CASEY, CEDAR FALLS, CENTERVILLE, CHARITON, CLARION, CLARKSVILLE, CLEAR LAKE, CONRAD, CORNING, CORYDON, CRESTON, DENISON, DES MOINES, DIKE, DUMONT, DYSART, EAGLE GROVE, EARLHAM, EARLY, ELDORA, EMMETSBURG, EXIRA, FONDA, FONTANELLE, FORT DODGE, GARNER, GILMORE CITY, GLADBROOK, GREENE, GREENFIELD, GRINNELL, GRUNDY CENTER, GUTHRIE CENTER, HAMPTON, HUMBOLDT, HUMESTON, INDIANOLA, IOWA FALLS, JEFFERSON, KANAWHA, KNOXVILLE, LAKE CITY, LAKE VIEW, LAMONI, LAURENS, LENOX, LEON, MANSON, MARSHALLTOWN, MASON CITY, MOUNT AYR, NEW MARKET, NEWTON, NORWALK, ODEBOLT, OSCEOLA, OSKALOOSA, OTTUMWA, PANORA, PARKERSBURG, PELLA, PERRY, POCAHONTAS, POMEROY, REINBECK, ROCKWELL CITY, ROLFE, SAC CITY, SCHALLER, SEYMOUR, SHELL ROCK, STUART, TAMA, TOLEDO, TRAER, WALL LAKE, WATERLOO, WAUKEE, WAVERLY, WEBSTER CITY, WELLSBURG, AND WINTERSET. * PRIMARY THREATS INCLUDE. SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS TO 80 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 : 05% PROB OF 10 OR MORE SEVERE WIND EVENTS : 70% PROB OF 1 OR MORE WIND EVENTS >= 75 MPH : 30% PROB OF 10 OR MORE SEVERE HAIL EVENTS : 20% PROB OF 1 OR MORE HAIL EVENTS >= 2 INCHES : 20% PROB OF 6 OR MORE COMBINED SEVERE HAIL/WIND EVENTS : 90% MEAN STORM MOTION /MPH/ : E 45

The Flood Warning continues for the following rivers in Iowa. Iowa River at Marshalltown affecting Marshall County. Iowa River near Tama Hwy E49 affecting Tama County. Cedar River at Waterloo affecting Black Hawk County. Cedar River at Cedar Falls affecting Black Hawk County. Des Moines River at Fort Dodge affecting Webster County. Des Moines River at Des Moines SE 6th St affecting Polk County. Des Moines River near Stratford affecting Webster, Boone and Hamilton Counties. East Fork Des Moines River near Algona affecting Kossuth and Humboldt Counties. . The Flood Warning is extended for the following rivers in Iowa. Black Hawk Creek at Hudson affecting Black Hawk County. * WHAT. Minor flooding is forecast. * WHERE. The East Fork Des Moines River near Algona, or from Buffalo Creek near Burt. to Lotts Creek near Livermore. * WHEN. Until early Sunday morning. * IMPACTS. At 17.0 feet, Water threatens US 169 south of Algona and affects some rural roads. * ADDITIONAL DETAILS. - At 1:15 AM CDT Friday the stage was 16.2 feet. - Forecast. The river is expected to rise above flood stage just after midnight tonight to a crest of 17.1 feet tomorrow morning. It will then fall below flood stage tomorrow evening. - Flood stage is 17.0 feet.

The Flood Warning is extended for the following rivers in Iowa. Little Sioux River at Cherokee affecting Cherokee County. Ocheyedan River near Spencer affecting Clay County. . The Flood Warning continues for the following rivers in Iowa. Little Sioux River at Spencer affecting Clay County. * WHAT. Minor flooding is occurring and minor flooding is forecast. * WHERE. Little Sioux River at Spencer. * WHEN. Until further notice. * ADDITIONAL DETAILS. - At 7:15 PM CDT Thursday the stage was 11.8 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 7:15 PM CDT Thursday was 11.8 feet. - Forecast. The river is expected to rise to a crest of 12.0 feet early tomorrow afternoon. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood