Damaging Wind and Large Hail Impacts Southeast South Dakota and Northwest Iowa

Overview
A bowing cluster of thunderstorms produced damaging winds from south central South Dakota, down the Missouri River Valley and into northwest Iowa around Sioux City, Le Mars and Cherokee, during the evening of Monday, July 29th into the early morning of Tuesday, July 30th. Measured wind gusts were generally in the 50-70 mph range, though isolated stronger gusts were reported around Corsica and Armour, South Dakota. Damage was primarily confined to broken tree branches and/or snapped trees, some of which fell on houses or vehicles and caused some property damage. The damaging winds also caused an evacuation of the Woodbury County Fairgrounds in Moville, Iowa, during the overnight hours on the first night of the county fair.

After a brief lull in activity after 1 am Monday, a second cluster of storms developed in southeast South Dakota, producing small hail and isolated tree damage in and around Sioux Falls during the pre-dawn hours of Tuesday. Farther west, an isolated severe storm produced sporadic reports of large hail along the Interstate 90 corridor after daybreak Tuesday.
Shelf cloud, dimly lit by in-cloud lightning, approaching Le Mars, Iowa, on the night of July 29-30, 2024
Photos & Video
Radar
Storm Reports
Photos & Video
Header

north of New Holland, SD (Douglas County EM)	Harrison, SD (Douglas County EM)	Vermillion, SD (Kendra Rich)	Vermillion, SD (Steven Comstock)

Ponca, NE (Brian Nelson)	Sioux City, IA (Tiff L Cash)	Merrill, IA (Kristie Foreman)	Salem, SD (Alison Klimkhammer)

Le Mars, IA (Wyatt Luschen)	Le Mars, IA (Wyatt Luschen)	Caption (source)	Caption (source)
Radar & Warnings

Radar Loop: 7 PM Monday, July 29, through 1 AM CDT Tuesday, July 30th	Radar Loop: 3 AM through 9 AM CDT Tuesday, July 30th	Plot of Severe Thunderstorm Warnings
Storm Reports
Plot of near-severe to severe wind gusts/wind damage and large hail during the evening of July 29 through the morning of July 30, 2024
..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0811 PM     Tstm Wnd Gst     1 ESE Dallas            43.23N 99.49W
07/29/2024  M53 MPH          Gregory            SD   Mesonet          

            Corrects time of previous tstm wnd gst 
            report from 1 ESE Dallas. Mesonet station 
            307 SD RWIS Dallas. 

0821 PM     Tstm Wnd Gst     2 E Dixon               43.39N 99.44W
07/29/2024  M50 MPH          Gregory            SD   Mesonet          

            Mesonet station 283 SD RWIS Dixon. 

0829 PM     Tstm Wnd Dmg     11 S White Lake         43.56N 98.69W
07/29/2024                   Aurora             SD   Trained Spotter  

            Large cottonwood tree fell on pickup and 
            numerous large branches down around the 
            yard. Time estimated based on radar. 

0840 PM     Tstm Wnd Dmg     5 WNW Harrison          43.47N 98.61W
07/29/2024                   Douglas            SD   Emergency Mngr   

            Roof decking removed on the southwest corner 
            of a shouse and tossed one quarter mile to 
            the southeast. Time estimated from radar. 

0847 PM     Tstm Wnd Gst     6 S Harrison            43.35N 98.52W
07/29/2024  M63 MPH          Douglas            SD   Public           

            Personal weather station. 

0849 PM     Tstm Wnd Gst     4 W Harrison            43.43N 98.61W
07/29/2024  M50 MPH          Douglas            SD   Public           

            Personal weather station. 

0850 PM     Tstm Wnd Dmg     Armour                  43.33N 98.34W
07/29/2024                   Douglas            SD   Emergency Mngr   

            Numerous trees down on the north side of 
            Armour. 

0856 PM     Tstm Wnd Gst     3 S Corsica             43.38N 98.41W
07/29/2024  M71 MPH          Douglas            SD   Mesonet          

            Mesonet station 304 SD RWIS Corsica. 

0900 PM     Tstm Wnd Gst     2 N Armour              43.35N 98.34W
07/29/2024  M56 MPH          Douglas            SD   Public           

            Personal weather station. 

0901 PM     Tstm Wnd Dmg     2 S Corsica             43.40N 98.41W
07/29/2024                   Douglas            SD   Emergency Mngr   

            Uprooted cottonwood tree. 

0901 PM     Tstm Wnd Gst     3 S Corsica             43.38N 98.41W
07/29/2024  M87 MPH          Douglas            SD   Mesonet          

            Mesonet station 304 SD RWIS Corsica. 

0901 PM     Tstm Wnd Gst     Armour                  43.32N 98.35W
07/29/2024  M68 MPH          Douglas            SD   Public           

            Personal weather station. 

0905 PM     Tstm Wnd Gst     Armour                  43.32N 98.35W
07/29/2024  M63 MPH          Douglas            SD   Mesonet          

            Mesonet station DVI09260 Armour. 

0907 PM     Tstm Wnd Gst     2 WSW Pickstown         43.05N 98.57W
07/29/2024  M64 MPH          Gregory            SD   Mesonet          

            Mesonet station 244 SD RWIS Ft. Randall Dam. 

0913 PM     Tstm Wnd Gst     1 N Delmont             43.28N 98.16W
07/29/2024  M52 MPH          Douglas            SD   Public           

            Personal weather station. 

0916 PM     Tstm Wnd Gst     4 NE Dante              43.08N 98.13W
07/29/2024  M52 MPH          Charles Mix        SD   Mesonet          

            Mesonet station 324 SD RWIS WAGNER. 

0921 PM     Tstm Wnd Gst     2 NW Tripp              43.24N 97.99W
07/29/2024  M74 MPH          Hutchinson         SD   Mesonet          

            Mesonet station 26 SD RWIS Tripp. 

0924 PM     Tstm Wnd Gst     Wagner                  43.08N 98.31W
07/29/2024  M53 MPH          Charles Mix        SD   Public           

            Personal weather station. 

0925 PM     Tstm Wnd Gst     1 SSW Parkston          43.38N 97.99W
07/29/2024  M58 MPH          Hutchinson         SD   Mesonet          

            Mesonet station PSTS2 Parkston (SD Mesonet). 

0930 PM     Tstm Wnd Gst     1 ENE Wagner            43.08N 98.28W
07/29/2024  M57 MPH          Charles Mix        SD   Public           

            Personal weather station. 

0930 PM     Tstm Wnd Gst     1 SSW Parkston          43.38N 97.99W
07/29/2024  M60 MPH          Hutchinson         SD   Mesonet          

            Mesonet station PSTS2 Parkston (SD Mesonet). 

0937 PM     Tstm Wnd Gst     2 WNW Scotland          43.16N 97.76W
07/29/2024  M58 MPH          Bon Homme          SD   Public           

            Personal weather station. 

0941 PM     Non-Tstm Wnd Gst 3 W Geddes              43.26N 98.76W
07/29/2024  M55 MPH          Charles Mix        SD   Mesonet          

            Northeast wind behind the line of 
            thunderstorms. Mesonet station RLAS2 Lake 
            Andes RAWS. 

0941 PM     Tstm Wnd Gst     4 NE Dante              43.08N 98.13W
07/29/2024  M54 MPH          Charles Mix        SD   Mesonet          

            Mesonet station 324 SD RWIS WAGNER. 

0945 PM     Tstm Wnd Gst     1 NW Avon               43.02N 98.07W
07/29/2024  M54 MPH          Bon Homme          SD   Public           

            Personal weather station. 

0954 PM     Tstm Wnd Gst     1 SW Tyndall            42.98N 97.87W
07/29/2024  M54 MPH          Bon Homme          SD   Public           

            Personal weather station. 

1026 PM     Tstm Wnd Gst     5 WNW Viborg            43.20N 97.17W
07/29/2024  M55 MPH          Turner             SD   Public           

            Personal weather station. 

1029 PM     Tstm Wnd Gst     4 WSW Yankton           42.86N 97.46W
07/29/2024  M52 MPH          Yankton            SD   Public           

            Personal weather station. 

1036 PM     Tstm Wnd Gst     2 NE Yankton            42.92N 97.37W
07/29/2024  M59 MPH          Yankton            SD   AWOS             

            AWOS station KYKN Yankton Municipal Airport. 

1100 PM     Tstm Wnd Dmg     Newcastle               42.65N 96.88W
07/29/2024                   Dixon              NE   Public           

            Report via social media of large tree down 
            across back deck. 

1103 PM     Tstm Wnd Dmg     Vermillion              42.78N 96.93W
07/29/2024                   Clay               SD   Public           

            Tree downed in Vermillion. Time estimated 
            from radar. 

1110 PM     Tstm Wnd Dmg     2 W Ponca               42.57N 96.75W
07/29/2024                   Dixon              NE   Public           

            A layer of shingles was peeled off the roof 
            of a single family home. Time estimated from 
            radar. 

1114 PM     Tstm Wnd Dmg     2 WNW Ponca             42.58N 96.75W
07/29/2024                   Dixon              NE   Trained Spotter  

            10 to 12 inch diameter tree branches broken 
            out of trees, some maybe bigger. Estimates 
            70 mph or higher wind gusts. 

1122 PM     Tstm Wnd Dmg     6 NNE Elk Point         42.76N 96.65W
07/29/2024                   Union              SD   Public           

            Large tree branch downed in Richland. Time 
            estimated from radar. 

1124 PM     Tstm Wnd Gst     2 SSW North Sioux City  42.51N 96.52W
07/29/2024  M59 MPH          Union              SD   Public           

            Personal Weather Station. 

1134 PM     Tstm Wnd Gst     1 SSE North Sioux City  42.52N 96.50W
07/29/2024  M60 MPH          Union              SD   Public           

            Personal Weather Station. 

1136 PM     Tstm Wnd Dmg     South Sioux City        42.47N 96.41W
07/29/2024                   Dakota             NE   Emergency Mngr   

            Several large tree branches downed around 
            South Sioux City, with some laying on 
            vehicles or residential structures. 

1139 PM     Tstm Wnd Gst     4 NNE Sergeant Bluff    42.46N 96.31W
07/29/2024  M66 MPH          Woodbury           IA   Public           

            Personal Weather Station. 

1139 PM     Tstm Wnd Gst     4 NNE Sergeant Bluff    42.46N 96.31W
07/29/2024  M60 MPH          Woodbury           IA   Public           

            Personal Weather Station. 

1140 PM     Tstm Wnd Dmg     2 WNW Sioux City        42.51N 96.42W
07/29/2024                   Woodbury           IA   Public           

            Picture via social media of a large tree 
            split near 18th and Myrtle Street. Aside 
            from this, have seen numerous pictures of 
            trees and branches down across Sioux City. 

1144 PM     Tstm Wnd Gst     4 N Sioux City          42.56N 96.40W
07/29/2024  M71 MPH          Woodbury           IA   Mesonet          

            Mesonet station AP032 Sioux City. 

1146 PM     Tstm Wnd Dmg     Merrill                 42.72N 96.25W
07/29/2024                   Plymouth           IA   Public           

            Large tree branches down in Merrill. Time 
            estimated from radar. 

1146 PM     Tstm Wnd Gst     4 ESE Sioux City        42.48N 96.33W
07/29/2024  M59 MPH          Woodbury           IA   Public           

            Personal Weather Station. 

1152 PM     Tstm Wnd Dmg     2 SW Le Mars            42.77N 96.19W
07/29/2024                   Plymouth           IA   Public           

            Semi truck trailer overturned in parking 
            lot. Time estimated from radar. 

1152 PM     Tstm Wnd Gst     2 SW Sergeant Bluff     42.38N 96.38W
07/29/2024  M69 MPH          Woodbury           IA   ASOS             

            Corrects previous tstm wnd gst report from 2 
            SW Sergeant Bluff. ASOS station KSUX Sioux 
            Gateway Airport. 

1155 PM     Tstm Wnd Dmg     Le Mars                 42.79N 96.17W
07/29/2024                   Plymouth           IA   Trained Spotter  

            Lots of tree damage in town. Northwest side 
            of Le Mars without power. Time estimated via 
            radar. 

1155 PM     Tstm Wnd Dmg     1 NNW Sioux City        42.52N 96.40W
07/29/2024                   Woodbury           IA   Public           

            Picture via social media of a large tree 
            down across the intersection of 24th and 
            Jones Street. Time estimated via radar. 

1155 PM     Tstm Wnd Gst     2 SW Le Mars            42.77N 96.20W
07/29/2024  M62 MPH          Plymouth           IA   AWOS             

            AWOS station KLRJ Le Mars Airport. 

1200 AM     Tstm Wnd Dmg     Kingsley                42.59N 95.97W
07/30/2024                   Plymouth           IA   Public           

            Trees and some power lines downed in 
            Kingsley. Time estimated from radar. 

1202 AM     Tstm Wnd Gst     5 NNW Lawton            42.55N 96.22W
07/30/2024  M59 MPH          Woodbury           IA   Public           

            Personal Weather Station. 

1206 AM     Tstm Wnd Dmg     Pierson                 42.54N 95.87W
07/30/2024                   Woodbury           IA   Public           

            Large tree branch downed in Pierson. Time 
            estimated from radar. 

1208 AM     Tstm Wnd Dmg     6 NE Kingsley           42.63N 95.88W
07/30/2024                   Plymouth           IA   Public           

            Several snapped trees at C60 and Tamarack 
            Avenue. Time estimated from radar. 

1208 AM     Tstm Wnd Dmg     Smithland               42.23N 95.93W
07/30/2024                   Woodbury           IA   Public           

            Large tree branch downed in Smithland. Time 
            estimated from radar. 

1221 AM     Tstm Wnd Dmg     Quimby                  42.63N 95.64W
07/30/2024                   Cherokee           IA   Public           

            Tree branches downed in Quimby. Time 
            estimated from radar. 

1221 AM     Tstm Wnd Gst     7 NW Quimby             42.71N 95.72W
07/30/2024  M57 MPH          Cherokee           IA   Public           

            Personal weather station. 

1222 AM     Tstm Wnd Dmg     Marcus                  42.82N 95.81W
07/30/2024                   Cherokee           IA   Public           

            Large evergreen tree downed in Marcus. Time 
            estimated from radar. 

1229 AM     Tstm Wnd Gst     Meriden                 42.80N 95.63W
07/30/2024  M57 MPH          Cherokee           IA   Public           

            Personal Weather Station. 

1235 AM     Tstm Wnd Gst     5 S Cleghorn            42.74N 95.70W
07/30/2024  M53 MPH          Cherokee           IA   Public           

            Personal weather station. 

1237 AM     Tstm Wnd Dmg     Cherokee                42.75N 95.55W
07/30/2024                   Cherokee           IA   Public           

            Large tree branches downed in Cherokee. Time 
            estimated from radar. 

1245 AM     Tstm Wnd Dmg     Aurelia                 42.71N 95.44W
07/30/2024                   Cherokee           IA   Fire Dept/Rescue 

            Multiple large tree branches downed in 
            Aurelia. Time estimated from radar. 

1255 AM     Tstm Wnd Gst     4 WSW Lakeside          42.60N 95.24W
07/30/2024  M56 MPH          Buena Vista        IA   AWOS             

            KSLB AWOS. 

0312 AM     Hail             Salem                   43.72N 97.39W
07/30/2024  E1.75 Inch       McCook             SD   Public           

            Reports of ping pong ball to golf ball size 
            hail in Salem. Time estimated from radar. 

0325 AM     Hail             4 ENE Salem             43.74N 97.31W
07/30/2024  E0.88 Inch       McCook             SD   CO-OP Observer   

            Lots of half inch to nickel sized hail. 

0434 AM     Tstm Wnd Gst     3 NNW Sioux Falls       43.58N 96.75W
07/30/2024  M52 MPH          Minnehaha          SD   ASOS             

            ASOS station KFSD Sioux Falls Airport. 

0446 AM     Tstm Wnd Dmg     4 WSW Sioux Falls       43.52N 96.80W
07/30/2024                   Minnehaha          SD   NWS Employee     

            8-12 inch diameter branch snapped off. Time 
            estimated based on radar. 

0452 AM     Tstm Wnd Dmg     1 SE Tea                43.43N 96.82W
07/30/2024                   Lincoln            SD   Trained Spotter  

            3 to 6 inches branches down. 

0504 AM     Hail             1 NE Harrisburg         43.44N 96.69W
07/30/2024  E0.75 Inch       Lincoln            SD   Public           

            Report from mPING: Dime (0.75 in.). 

0514 AM     Tstm Wnd Gst     5 SSW Worthing          43.26N 96.80W
07/30/2024  M54 MPH          Lincoln            SD   Mesonet          

            Measured at Davis SD SDDOT site. 

0540 AM     Tstm Wnd Gst     3 SSW Beresford         43.04N 96.80W
07/30/2024  M51 MPH          Union              SD   Mesonet          

            51 mph wind gust measured at the Beresford, 
            SD SDDOT site. 

0549 AM     Tstm Wnd Gst     3 ESE Sioux Center      43.05N 96.12W
07/30/2024  M57 MPH          Sioux              IA   Public           

            Personal weather station. 

0550 AM     Hail             Sioux Center            43.07N 96.17W
07/30/2024  E0.75 Inch       Sioux              IA   Public           

            Report from mPING: Dime (0.75 in.). 

0605 AM     Tstm Wnd Gst     1 N Oyens               42.84N 96.05W
07/30/2024  E57 MPH          Plymouth           IA   Public           

            Personal weather station. 

0712 AM     Hail             8 NNE White Lake        43.83N 98.67W
07/30/2024  E1.00 Inch       Aurora             SD   Trained Spotter  

            Hail started out like ice cubes, but then 
            got smaller as the rain got heavier. 
            Rainfall up to 710 am was 0.14 inch, but it 
            was still raining. 

0739 AM     Hail             4 NE Mount Vernon       43.75N 98.21W
07/30/2024  E1.00 Inch       Davison            SD   Public           

            Hail up to the size of quarters. Small hail 
            would break up when hitting the ground or 
            deck, but larger stones would not. 

0741 AM     Hail             1 W Mitchell            43.73N 98.06W
07/30/2024  E0.88 Inch       Davison            SD   Trained Spotter  

            In addition to hail up to the size of 
            nickels, wind gusts around 50 mph stripped a 
            lots of leaves off elm trees. 

0746 AM     Hail             1 SE Mitchell           43.72N 98.02W
07/30/2024  M1.25 Inch       Davison            SD   Public           

             

0755 AM     Tstm Wnd Gst     3 SSW Beresford         43.04N 96.80W
07/30/2024  M59 MPH          Union              SD   Mesonet          

            Mesonet station 16 SD RWIS Beresford. 

0800 AM     Tstm Wnd Dmg     Alcester                43.02N 96.63W
07/30/2024                   Union              SD   Public           

            Tree downed in Alcester. 

0905 AM     Tstm Wnd Gst     3 ESE Sioux Center      43.05N 96.12W
07/30/2024  M57 MPH          Sioux              IA   Public           

            Personal weather station. 


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