A moderate risk of heavy rainfall and flash flooding is forecast over northern Iowa later today and overnight. Storms will be redeveloping this afternoon, with the heaviest rainfall expected later this evening to early Saturday morning. Some uncertainty remains as to the exact axis of heaviest rainfall, but current indications are that the heaviest rainfall in north central Iowa will be generally between Highway 20 and the Iowa Minnesota border. If you live in or near the watch, please monitor the weather closely this afternoon and tonight. Review flooding safety plans now and be prepared if you must take action. * WHAT. Flooding caused by excessive rainfall is expected tonight for locations within the watch area. * WHERE. Portions of north central and northwest Iowa, including the following counties, in north central Iowa, Cerro Gordo, Hancock, Kossuth, Winnebago and Worth. In northwest Iowa, Emmet and Palo Alto. * WHEN. Through Saturday afternoon. * 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. Low-water crossings may be flooded. Extensive street flooding and flooding of creeks and rivers are possible. * ADDITIONAL DETAILS. - Expected rainfall totals may exceed 4 to 7 inches in some areas with locally higher amounts are possible. Rapid rises in creeks, streams and urban flooding will be possible. Field flooding and washed out county roads will also be possible. Rainfall rates may approach 2 inches per hour in the heavier storms. Nighttime flooding is especially dangerous due to the lack of light and ability to see flooding impacts.

* WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of northwest Iowa, including the following areas, Buena Vista, Cherokee, Clay, Dickinson, Lyon, O'Brien, Osceola, Plymouth and Sioux, southwest Minnesota, including the following areas, Cottonwood, Jackson, Lincoln, Lyon, Murray, Nobles, Pipestone and Rock, and South Dakota, including the following areas, Aurora, Beadle, Bon Homme, Brookings, Brule, Charles Mix, Clay, Davison, Douglas, Gregory, Hanson, Hutchinson, Jerauld, Kingsbury, Lake, Lincoln, McCook, Miner, Minnehaha, Moody, Sanborn, Turner, Union and Yankton. * WHEN. Through Saturday morning. * IMPACTS. Extensive street flooding and flooding of creeks and rivers are possible. Area creeks and streams are running high and could flood with more heavy rain. * ADDITIONAL DETAILS. - Widespread heavy rainfall is again expected Friday evening into Saturday morning. This rainfall will fall on already saturated ground. Additional accumulations of 1 to 4 inches will be possible, with locally higher amounts especially south of Interstate 90. - http://www.weather.gov/safety/flood

Another round of heavy rainfall is expected tonight through early Saturday across portions of southern and central Minnesota and western Wisconsin. Rainfall totals of 2 to 4 inches are expected by Saturday afternoon with locally higher amounts of 5+ inches possible across south central Minnesota. Rainfall rates may exceed 1"/hour at times. * WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of central, south central, southwest, and west central Minnesota, including the following counties, in central Minnesota, Renville. In south central Minnesota, Brown, Martin and Watonwan. In southwest Minnesota, Redwood. In west central Minnesota, Yellow Medicine. * WHEN. Through Saturday morning. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Saturated soils combined with another couple rounds of very heavy rain could result in flash flooding. - http://www.weather.gov/safety/flood

Another round of heavy rainfall is expected tonight through early Saturday across portions of southern and central Minnesota and western Wisconsin. Rainfall totals of 2 to 4 inches are expected by Saturday afternoon with locally higher amounts of 5+ inches possible across south central Minnesota. Rainfall rates may exceed 1"/hour at times. * WHAT. Flash flooding caused by excessive rainfall continues to be possible. * WHERE. Portions of Minnesota, including the following areas, Anoka, Blue Earth, Carver, Dakota, Faribault, Freeborn, Goodhue, Hennepin, Le Sueur, McLeod, Nicollet, Ramsey, Rice, Scott, Sibley, Steele, Waseca, Washington and Wright and west central Wisconsin, including the following areas, Dunn, Pepin, Pierce and St. Croix. * WHEN. Through Saturday afternoon. * IMPACTS. Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS. - Saturated soils combined with another couple rounds of very heavy rain could result in flash flooding. - http://www.weather.gov/safety/flood

The Flood Watch continues for the following rivers in Iowa. Cedar River at Cedar Falls affecting Black Hawk county. Winnebago River at Mason City affecting Floyd, Cerro Gordo and Worth counties. Shell Rock River at Shell Rock affecting Bremer, Butler and Black Hawk counties. Des Moines River at Fort Dodge affecting Webster County. Des Moines River near Stratford affecting Hamilton, Webster and Boone Counties. West Fork Des Moines River at Humboldt affecting Humboldt County. West Fork Des Moines River at Emmetsburg affecting Palo Alto and Pocahontas Counties. East Fork Des Moines River near Algona affecting Humboldt and Kossuth Counties. . The Flood Watch is replaced by a River Flood Warning for the following rivers in Iowa. West Fork Des Moines River at Estherville affecting Emmet County. .These forecasts are highly dependent on forecast rainfall amounts on today and Saturday, therefore the crest values are conditional on the forecast rainfall occurring. * WHAT. Flooding is possible. * WHERE. The West Fork Des Moines River at Emmetsburg, or from near Graettinger to Cylinder Creek near West Bend. * WHEN. From Saturday evening until further notice. * IMPACTS. At 11.0 feet, Water threatens Iowa 4 in areas near the river overpass as well as the road to the rendering plant. The road to the sanitary landfill area is closed. At 13.5 feet, Water threatens US 18 west of Emmetsburg as well as the Northern Natural Gas distribution plant. Sandbagging operations may occur for the sewer plant and wells. * ADDITIONAL DETAILS. - At 4:15 AM CDT Friday the stage was 9.5 feet. - Forecast. Flood stage may be reached late tomorrow evening. - Flood stage is 11.0 feet. - This forecast is highly dependent on forecast rainfall amounts on Friday and Saturday, therefore the crest value is conditional on the forecast rainfall occurring.

The Flood Watch continues for the following rivers in Iowa. Cedar River at Cedar Falls affecting Black Hawk county. Winnebago River at Mason City affecting Floyd, Cerro Gordo and Worth counties. Shell Rock River at Shell Rock affecting Bremer, Butler and Black Hawk counties. Des Moines River at Fort Dodge affecting Webster County. Des Moines River near Stratford affecting Hamilton, Webster and Boone Counties. West Fork Des Moines River at Humboldt affecting Humboldt County. West Fork Des Moines River at Emmetsburg affecting Palo Alto and Pocahontas Counties. East Fork Des Moines River near Algona affecting Humboldt and Kossuth Counties. . The Flood Watch is replaced by a River Flood Warning for the following rivers in Iowa. West Fork Des Moines River at Estherville affecting Emmet County. .These forecasts are highly dependent on forecast rainfall amounts on today and Saturday, therefore the crest values are conditional on the forecast rainfall occurring. * WHAT. Flooding is possible. * WHERE. The East Fork Des Moines River near Algona, or from Buffalo Creek near Burt to Lotts Creek near Livermore. * WHEN. From late Saturday night until further notice. * IMPACTS. At 17.0 feet, Water threatens US 169 south of Algona and affects some rural roads. At 20.0 feet, Water affects portions of US 18. Water enters the parking lot of the shopping center north of US 18 and west of the river. * ADDITIONAL DETAILS. - At 4:15 AM CDT Friday the stage was 14.6 feet. - Forecast. Flood stage may be reached early Sunday morning. - Flood stage is 17.0 feet. - This forecast is highly dependent on forecast rainfall amounts on Friday and Saturday, therefore the crest value is conditional on the forecast rainfall occurring.

The Flood Watch continues for the following rivers in Iowa. Cedar River at Cedar Falls affecting Black Hawk county. Winnebago River at Mason City affecting Floyd, Cerro Gordo and Worth counties. Shell Rock River at Shell Rock affecting Bremer, Butler and Black Hawk counties. Des Moines River at Fort Dodge affecting Webster County. Des Moines River near Stratford affecting Hamilton, Webster and Boone Counties. West Fork Des Moines River at Humboldt affecting Humboldt County. West Fork Des Moines River at Emmetsburg affecting Palo Alto and Pocahontas Counties. East Fork Des Moines River near Algona affecting Humboldt and Kossuth Counties. . The Flood Watch is replaced by a River Flood Warning for the following rivers in Iowa. West Fork Des Moines River at Estherville affecting Emmet County. .These forecasts are highly dependent on forecast rainfall amounts on today and Saturday, therefore the crest values are conditional on the forecast rainfall occurring. * WHAT. Flooding is possible. * WHERE. The West Fork Des Moines River at Humboldt, or from Joe Reasoner Dam to the East Fork Des Moines River. * WHEN. From Saturday afternoon until further notice. * IMPACTS. At 10.0 feet, Water impacts some homes along Country Club Dr. At 13.0 feet, Flooding affects streets from S 13th Ave southward. * ADDITIONAL DETAILS. - At 4:15 AM CDT Friday the stage was 9.0 feet. - Forecast. Flood stage may be reached tomorrow afternoon. - Flood stage is 10.0 feet. - This forecast is highly dependent on forecast rainfall amounts on Friday and Saturday, therefore the crest value is conditional on the forecast rainfall occurring.

The Flood Warning is extended for the following rivers in Iowa. 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. Little Sioux River near Milford affecting Dickinson County. Little Sioux River above Spencer / Highway 18 affecting Clay County. * WHAT. Moderate flooding is occurring and moderate flooding is forecast. * WHERE. Little Sioux River near Milford. * WHEN. Until further notice. * IMPACTS. At 16.5 feet, The lowest portion of 180th St is flooded. * ADDITIONAL DETAILS. - At 9:00 AM CDT Thursday the stage was 14.4 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 9:00 AM CDT Thursday was 15.1 feet. - Forecast. The river will gradually fall but this forecast will be heavily impacted by how much rain eventually falls. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning is extended for the following rivers in Iowa. 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. Little Sioux River near Milford affecting Dickinson County. Little Sioux River above Spencer / Highway 18 affecting Clay County. * WHAT. Moderate flooding is occurring and moderate flooding is forecast. * WHERE. Ocheyedan River near Spencer. * WHEN. Until further notice. * IMPACTS. At 10.5 feet, Significant amounts of agricultural land are flooded and some county roads may begin to flood. * ADDITIONAL DETAILS. - At 10:00 AM CDT Thursday the stage was 10.3 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 10:00 AM CDT Thursday was 10.5 feet. - Forecast. The river is expected to fall to 8.1 feet Tuesday morning. This forecast will be heavily impacted by how much rain eventually falls. - Flood stage is 8.0 feet. - http://www.weather.gov/safety/flood

Forecast flooding changed from Moderate to Major severity for the following rivers in Iowa. Little Sioux River near Milford affecting Dickinson County. * WHAT. Moderate flooding is occurring and major flooding is forecast. * WHERE. Little Sioux River near Milford. * WHEN. Until further notice. * IMPACTS. At 17.5 feet, Water approaches the lowest portion of 190th Ave between 260th and 270th Streets. The floodplain can be as wide as 0.25 mile wide in places. * ADDITIONAL DETAILS. - At 8:00 PM CDT Thursday the stage was 15.1 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:00 PM CDT Thursday was 15.1 feet. - Forecast. The river is expected to rise to a crest of 17.1 feet early Saturday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning continues for the following rivers in Iowa. Ocheyedan River near Spencer affecting Clay County. Little Sioux River at Spencer affecting Clay County. Little Sioux River above Spencer / Highway 18 affecting Clay County. * WHAT. Minor flooding is occurring and moderate flooding is forecast. * WHERE. Little Sioux River at Spencer. * WHEN. Until further notice. * IMPACTS. At 14.0 feet, City sewers in Spencer can begin to back up. Highway 18 between Spencer and Dickens can start flooding if flows on the tributary creeks are also very high. * ADDITIONAL DETAILS. - At 8:15 PM CDT Thursday the stage was 13.9 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:15 PM CDT Thursday was 14.0 feet. - Forecast. The river is expected to rise to a crest of 14.1 feet Sunday morning. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood

The National Weather Service in Sioux Falls SD has issued a Flood Warning for the following rivers in South Dakota. Minnesota. Iowa. Vermillion River near Chancellor affecting Turner County. Pipestone Creek below Pipestone affecting Moody, Minnehaha and Pipestone Counties. Ocheyedan River near Everly affecting O'Brien and Clay Counties. * WHAT. Minor flooding is occurring. * WHERE. Ocheyedan River near Everly. * WHEN. From this morning until further notice. * IMPACTS. At 1364.0 feet, Ditches fill, the lowest banks overflow, and minor flooding of agricultural land begins. * ADDITIONAL DETAILS. - At 8:45 AM CDT Friday the stage was 1364.0 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 8:45 AM CDT Friday was 1364.0 feet. - Forecast. No forecast is available for this location. - Flood stage is 1364.0 feet. - http://www.weather.gov/safety/flood

* WHAT. Flooding caused by excessive rainfall is ongoing. * WHERE. Portions of northwest Iowa, including the following counties, Clay, Dickinson, Lyon, O'Brien, Osceola and Sioux, southwest Minnesota, including the following county, Nobles, and southeast South Dakota, including the following counties, Lincoln, Turner and Union. * WHEN. Until 730 AM CDT Saturday. * IMPACTS. Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Several structures are flooded and some sand bagging operations are continuing. Numerous roads remain closed due to flooding. * ADDITIONAL DETAILS. - At 801 AM CDT, Emergency management reported heavy rain had occurred and flooding is already occurring. Between 2 and 7 inches of rain have fallen. - Additional rainfall amounts of 1 to 4 inches are possible in the warned area over the next 24 hours. - Some locations that will experience flooding include. Sioux Falls, Sioux Center, Sheldon, Canton, Sibley, Rock Rapids, Beresford, Parker, Harrisburg, Tea, Rock Valley, Hull, Lennox, Sanborn, George, Centerville, Worthing, Larchwood, Inwood and Viborg. - http://www.weather.gov/safety/flood

* WHAT. Flooding caused by excessive rainfall is ongoing. * WHERE. Portions of southwest Minnesota, including the following counties, Jackson, Murray, Nobles, Pipestone and Rock and South Dakota, including the following counties, Lake, Minnehaha and Moody. * WHEN. Until 730 AM CDT Saturday. * IMPACTS. Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. Numerous roads remain closed due to flooding. * ADDITIONAL DETAILS. - At 752 AM CDT, Emergency management reported heavy rain had occurred and flooding is ongoing. Between 2 and 7 inches of rain had fallen. - Additional rainfall amounts of 1 to 3 inches are possible in the warned area over the next 24 hours. - Some locations that will experience flooding include. Sioux Falls, Worthington, Madison, Luverne, Pipestone, Brandon, Hartford, Flandreau, Fulda, Crooks, Adrian, Edgerton, Garretson, Wall Lake, Baltic, Valley Springs, Colton, Hills, Jasper and Colman. - http://www.weather.gov/safety/flood

* WHAT. Flooding caused by excessive rainfall is expected. * WHERE. Portions of northwest Iowa, including the following counties, Clay, Dickinson, O'Brien and Osceola and southwest Minnesota, including the following counties, Cottonwood, Jackson, Murray and Nobles. * WHEN. Until 615 PM CDT Friday. * IMPACTS. Flooding of rivers, creeks, streams, and other low-lying and flood-prone locations is imminent or occurring. * ADDITIONAL DETAILS. - At 613 AM CDT, Emergency management reported heavy rain in the warned area due to thunderstorms. Flooding is ongoing or expected to begin shortly. Between 1.5 and 4 inches of rain have fallen. - Some locations that will experience flooding include. Spencer In Clay County, Spirit Lake, Windom, Jackson In Jackson County, Milford, Mountain Lake, Lakefield, Arnolds Park, Lake Park, Bergen, Okoboji, Heron Lake, Orleans, Everly, Brewster, Royal, Round Lake, Terril, Wahpeton and Peterson. - http://www.weather.gov/safety/flood

The National Weather Service in Des Moines IA has issued a Flood Warning for the following rivers in Iowa. West Fork Des Moines River at Estherville affecting Emmet County. .These forecasts are highly dependent on forecast rainfall amounts on today and Saturday, therefore the crest values are conditional on the forecast rainfall occurring. * WHAT. High confidence in at least Minor Flood Stage. Major flooding is forecast, but is dependent on where the highest rainfall amounts accumulate. Therefore, confidence is lower for Major Flooding, at this time. * WHERE. The West Fork Des Moines River at Estherville, or from the Iowa-Minnesota border to near Wallingford. * WHEN. From this afternoon until further notice. * IMPACTS. At 10.0 feet, Extensive lowland flooding occurs particularly over the parkland areas near the river. At 14.5 feet, Water affects residences along W 1st St north and south of Iowa 9. and along Valley Dr. * ADDITIONAL DETAILS. - At 4:00 AM CDT Friday the stage was 9.2 feet. - Forecast. The river is expected to rise above flood stage this afternoon and continue rising to a crest of 14.5 feet early Sunday morning. It will then rise to 14.6 feet early Thursday afternoon. Additional rises are possible thereafter. - Flood stage is 10.0 feet.

The National Weather Service in Sioux Falls SD has issued a Flood Warning for the following rivers in South Dakota. Iowa. James River near Scotland affecting Yankton, Bon Homme and Hutchinson Counties. Firesteel Creek near Mount Vernon affecting Davison County. James River near Forestburg affecting Sanborn County. James River near Mitchell affecting Hanson and Davison Counties. East Fork Vermillion River near Montrose affecting McCook County. West Fork Vermillion River Near Parker affecting Turner County. East Fork Vermillion River near Parker affecting Turner County. Big Sioux River above Hawarden affecting Union, Sioux and Lincoln Counties. Big Sioux River near Canton affecting Lincoln, Sioux and Lyon Counties. Big Sioux River at Akron affecting Plymouth and Union Counties. Rock River at Rock Valley affecting Sioux and Lyon Counties. Floyd River at Sheldon affecting Sioux and O'Brien Counties. Floyd River at Alton affecting Plymouth and Sioux Counties. Little Sioux River near Montgomery affecting Dickinson County. West Fork Little Sioux River near Lake Park affecting Dickinson County. Little Sioux River at Cherokee affecting Cherokee County. * WHAT. Minor flooding is occurring. * WHERE. Little Sioux River near Montgomery. * WHEN. From early this morning until further notice. * IMPACTS. At 1391.0 feet, Crop and pasture land begin to flood. * ADDITIONAL DETAILS. - At 12:30 AM CDT Friday the stage was 1391.1 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 12:30 AM CDT Friday was 1391.1 feet. - Forecast. No forecast is available for this location. - Flood stage is 1391.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning continues for the following rivers in Iowa. Ocheyedan River near Spencer affecting Clay County. Little Sioux River at Spencer affecting Clay County. Little Sioux River near Milford affecting Dickinson County. Little Sioux River above Spencer / Highway 18 affecting Clay County. * WHAT. Moderate flooding is occurring and major flooding is forecast. * WHERE. Little Sioux River near Milford. * WHEN. Until further notice. * IMPACTS. At 17.5 feet, Water approaches the lowest portion of 190th Ave between 260th and 270th Streets. The floodplain can be as wide as 0.25 mile wide in places. * ADDITIONAL DETAILS. - At 9:00 PM CDT Thursday the stage was 15.3 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 9:00 PM CDT Thursday was 15.3 feet. - Forecast. The river is expected to rise to a crest of 17.1 feet early Saturday afternoon. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood

The Flood Warning continues for the following rivers in Iowa. Ocheyedan River near Spencer affecting Clay County. Little Sioux River at Spencer affecting Clay County. Little Sioux River near Milford affecting Dickinson County. Little Sioux River above Spencer / Highway 18 affecting Clay County. * WHAT. Moderate flooding is occurring. * WHERE. Little Sioux River above Spencer / Highway 18. * WHEN. Until further notice. * IMPACTS. At 1322.5 feet, Most banks begin to be overtopped and overspill into nearby agricultural land. * ADDITIONAL DETAILS. - At 9:30 PM CDT Thursday the stage was 1324.1 feet. - Recent Activity. The maximum river stage in the 24 hours ending at 9:30 PM CDT Thursday was 1324.1 feet. - Forecast. No forecast is available for this location. - Flood stage is 1322.0 feet. - http://www.weather.gov/safety/flood

Flood Warning continues for the following rivers in South Dakota. Iowa. Vermillion River near Davis affecting Lincoln and Turner Counties. Little Sioux River At Linn Grove affecting Clay, Cherokee, Buena Vista and O'Brien Counties. * WHAT. Minor flooding is forecast. * WHERE. Little Sioux River at Linn Grove. * WHEN. Until Sunday morning. * IMPACTS. At 18.5 feet, the city park in Sioux Rapids is flooded. * ADDITIONAL DETAILS. - At 10:00 AM CDT Thursday the stage was 16.8 feet. - Forecast. The river is expected to rise to a crest of 17.9 feet Saturday morning. This forecast will be heavily impacted by how much rain eventually falls. - Flood stage is 18.0 feet. - http://www.weather.gov/safety/flood