Days of heavy rain fell in parts of South Dakota from 10 to September 2019, causing widespread flooding in the state. Meanwhile National Weather Service (NWS) is warning that the rain in South Dakota could result in another wave of flooding downstream along the Missouri River in Iowa and Nebraska.

Rainfall and Rivers
NWS Sioux Falls reported that some areas saw 10 inches (254mm) to 13.5 inches (342.9mm) in a 48 hour period to 12 September.
Rivers and creeks broke their banks. NWS Sioux Falls said via Social Media: “Some of the rivers around the area are at an all-time high and unfortunately some are still rising. While the records are preliminary, the oldest record broken was from the 1969 flood.”


Flooding and Tornadoes
Flooding was reported in Mitchell, Madison, Spencer, Yankton, Brookings, Sioux Falls and Dell Rapids. Around 30 people had to be rescued from flood water in Madison. Homes, roads and bridges were damaged and schools closed in affected areas.
Earlier in the week several tornadoes had damaged or destroyed dozens of buildings in Sioux Falls.
Heavy rains in north-central Nebraska during the same period washed out some roads and bridges. One person was rescued from flood water near Ainsworth.
Missouri River Warnings
On 15 September the National Weather Service said that the heavy rains and flooding in South Dakota will likely result in more flooding downstream along the Missouri River.
As of 16 September flood warnings were in place for several communities along the Missouri including Decatur, Blair, Omaha, Plattsmouth, Nebraska City, Brownville and Rulo. Crests are expected between 18 and 22 September. Further rain is also forecast from around 20 September.
Social Media
Sentinel imagery of #Yankton from Sept 10th vs Sept 15th pic.twitter.com/DHqrtNfagz
— NWS Sioux Falls (@NWSSiouxFalls) September 16, 2019
Sentinel imagery of #Madison from Sept 10th vs Sept 15th pic.twitter.com/SVb4vv7U0o
— NWS Sioux Falls (@NWSSiouxFalls) September 16, 2019
Rick Williams and his family pull a few belongings from their house in a boat minutes after their front porch floated away in Dell Rapids. @Argus911 pic.twitter.com/rVeICKlyHh
— Erin Bormett (@EEBormett) September 13, 2019
Here's a first look at the severe storm damage that occurred last night in Sioux Falls. pic.twitter.com/WyozEC0b8Q
— City of Sioux Falls (@CitySiouxFalls) September 11, 2019
Here are a few aerial photos taken on Saturday the 14th, around Lake County at about 5:00 pm. pic.twitter.com/tPo1V9sOgI
— Madison Police, SD (@MadisonPoliceSD) September 15, 2019
Some of the rivers around the area are at an all-time high and unfortunately some are still rising. While the records are preliminary, the oldest record broken was from the 1969 flood.
For the latest information regarding rivers, please visit https://t.co/tQEmOuFkdS pic.twitter.com/k52WeOgwmO
— NWS Sioux Falls (@NWSSiouxFalls) September 13, 2019
How much rain did we observe during the middle of the week? Observations and estimated indicated 5" to as many as 12" in the area.
Here's a closer look. pic.twitter.com/nb1TZDrSPe
— NWS Sioux Falls (@NWSSiouxFalls) September 13, 2019
Several homes and roads are under water in Montrose. The campground and fields are flooded, as well. @ksfynews pic.twitter.com/hBGgMIQFek
— Jill Langland (@Jill_KSFY) September 13, 2019