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Hurricane Force Winds Create Issues on I90

The severe thunderstorm that produced very large hail in Pierre brought strong winds to south-central South Dakota on Tuesday evening.


Storm near Reliance

Photo Credit: SDDOT Camera System (Near Reliance on 7-18-23 at 8:35pm CDT)


A thunderstorm wind gust of 100mph was measured 2 miles west of Oacoma at around 8:15pm CDT, Tuesday evening. This created issues for motorists traveling on Interstate 90 during the event, with reports of semis being tipped over.






Below is the National Weather Service's storm reports from south-central South Dakota. If you want to check out earlier reports, check out our story Storms in Central, SD Bring Large Hail and a Tornado.



National Weather Service Storm Reports:

07/18/2023 10:15 PM Thunderstorm Wind Gust 59.00MPH Location: 7 Mi SSE Dallas (Gregory County) SDSU Mesonet Site GGMS2 7 SSW Gregory.


07/18/2023 10:07 PM Non-Thunderstorm Wind Gust 58.00MPH Location: 5 Mi W Plankinton (Aurora County) SD RWIS Plankinton.


07/18/2023 9:44 PM Non-Thunderstorm Wind Gust 55.00MPH Location: 3 Mi N Mitchell (Davison County) ASOS Station KMHE Mitchell Municipal Airport.


07/18/2023 9:33 PM Thunderstorm Wind Gust 50.00MPH Location: 5 Mi W Plankinton (Aurora County) SD RWIS Plankinton.


07/18/2023 9:28 PM Thunderstorm Wind Gust 57.00MPH Location: 14 Mi W Platte (Charles Mix County) SD RWIS Platte-Winner Bridge.


07/18/2023 8:58 PM Thunderstorm Wind Gust 56.00MPH Location: 1 Mi S Kimball (Brule County) SD RWIS Kimball.


07/18/2023 8:56 PM Thunderstorm Wind Gust 56.00MPH Location: 14 Mi W Platte (Charles Mix County) SD RWIS Platte-Winner Bridge.


07/18/2023 8:28 PM Thunderstorm Wind Gust 71.00MPH Location: 3 Mi SE Reliance (Lyman County) Mesonet Station 54 Reliance (SDDOT).


07/18/2023 8:22 PM Thunderstorm Wind Gust 61.00MPH Location: 3 Mi S Chamberlain (Brule County) Corrects Previous Tstm Wnd Gst Report From 3 S Chamberlain.


07/18/2023 8:15 PM Thunderstorm Wind Gust 100.00MPH Location: 2 Mi W Oacoma (Lyman County) Mesonet Station OCMS2 Oacoma 2W (SD Mesonet).


07/18/2023 8:05 PM Thunderstorm Wind Damage Location: 2 Mi WNW Oacoma (Lyman County) Semi Tipped Over Along I-90.


07/18/2023 8:05 PM Thunderstorm Wind Damage Location: 1 Mi S Reliance (Lyman County) Semi Tipped Over Along I-90.


07/18/2023 7:48 PM Thunderstorm Wind Gust 64.00MPH Location: Lower Brule (Lyman County)

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