Pilot Index / South Dakota / Sep 17, 2021

Preliminary

Storms in South Dakota on Sep 17, 2021

19 published severe reports across South Dakota on Sep 17, 2021.

Updated Oct 28, 2026.

Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail reports: 0. Wind reports: 19. Tornado reports: 0.

The table and map show 19 of 19 reports.

TimeWhatSize or SpeedWhereDetails
Sep 17, 2021, 12:04 AM CDTWind62 mph10 SSW AURORA
Record
  • Sep 17, 2021, 12:04 AM CDT. Wind, 62 mph, 10 SSW AURORA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:5a5e46092312772cbb08755f92653c67c01e49f6e0fbe166643790a55929757a.
Sep 17, 2021, 12:04 AM CDTWind62 mphSIOUX FALLS JCT
Record
  • Sep 17, 2021, 12:04 AM CDT. Wind, 62 mph, SIOUX FALLS JCT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985525.
Sep 17, 2021, 12:05 AM CDTWind75 mphHARTFORD
Record
  • Sep 17, 2021, 12:05 AM CDT. Wind, 75 mph, HARTFORD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985522.
Sep 17, 2021, 12:08 AM CDTWind59 mphBROOKINGS
Record
  • Sep 17, 2021, 12:08 AM CDT. Wind, 59 mph, BROOKINGS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985530.
Sep 17, 2021, 12:12 AM CDTWind75 mphCROOKS
Record
  • Sep 17, 2021, 12:12 AM CDT. Wind, 75 mph, CROOKS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985523.
Sep 17, 2021, 12:15 AM CDTWind63 mph2 NE YANKTON
Record
  • Sep 17, 2021, 12:15 AM CDT. Wind, 63 mph, 2 NE YANKTON. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0cd3faf7c7dfcd3a6bd6c7384dc7bd548477fe1e801a02363fd092ef15585bb1.
Sep 17, 2021, 12:15 AM CDTWind59 mph2 NE BROOKINGS
Record
  • Sep 17, 2021, 12:15 AM CDT. Wind, 59 mph, 2 NE BROOKINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1b43e63e6bb4802006dcbb8b521efc39ca9308e8c6a401a09e74119a2614e076.
Sep 17, 2021, 12:15 AM CDTWind73 mph3 SE BALTIC
Record
  • Sep 17, 2021, 12:15 AM CDT. Wind, 73 mph, 3 SE BALTIC. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:cd9a262149de6ce8844c99ab32410a130b8dbb08221399a9d7503107e5189030.
Sep 17, 2021, 12:15 AM CDTWind72 mphBALTIC
Record
  • Sep 17, 2021, 12:15 AM CDT. Wind, 72 mph, BALTIC. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985526.
Sep 17, 2021, 12:15 AM CDTWind63 mph(YKN)CHAN GURNEY ARP
Record
  • Sep 17, 2021, 12:15 AM CDT. Wind, 63 mph, (YKN)CHAN GURNEY ARP. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985529.
Sep 17, 2021, 12:17 AM CDTWind64 mphSIOUX FALLS JCT
Record
  • Sep 17, 2021, 12:17 AM CDT. Wind, 64 mph, SIOUX FALLS JCT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985539.
Sep 17, 2021, 12:19 AM CDTWind70 mphCOLTON
Record
  • Sep 17, 2021, 12:19 AM CDT. Wind, 70 mph, COLTON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985524.
Sep 17, 2021, 12:20 AM CDTWind64 mph10 SSW AURORA
Record
  • Sep 17, 2021, 12:20 AM CDT. Wind, 64 mph, 10 SSW AURORA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3df63a160a85a3b720e40e512b78b0b441973731ab7745dd76ba4252a941b18d.
Sep 17, 2021, 12:28 AM CDTWind63 mph3 SSW BERESFORD
Record
  • Sep 17, 2021, 12:28 AM CDT. Wind, 63 mph, 3 SSW BERESFORD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:d3c948b31655b9f7e35d4bb67b4f4f5cbd7efbb077b016ca64177b6374ffa1f7.
Sep 17, 2021, 12:37 AM CDTWind63 mphALSEN
Record
  • Sep 17, 2021, 12:37 AM CDT. Wind, 63 mph, ALSEN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985533.
Sep 17, 2021, 12:38 AM CDTWind71 mph6 E VERMILLION
Record
  • Sep 17, 2021, 12:38 AM CDT. Wind, 71 mph, 6 E VERMILLION. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:9bab0e2d8f00924b6df06d569a90eebf7a4446cdc127ad69c1bce2db30905e7a.
Sep 17, 2021, 12:38 AM CDTWind71 mphBURBANK
Record
  • Sep 17, 2021, 12:38 AM CDT. Wind, 71 mph, BURBANK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:985528.
Sep 17, 2021, 12:39 AM CDTWind58 mph5 SSW WORTHING
Record
  • Sep 17, 2021, 12:39 AM CDT. Wind, 58 mph, 5 SSW WORTHING. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:71d7790f07b1e625752f4d95bb1d678ab07a8357bb4a6cd6af6fa46afb3c6fe4.
Sep 17, 2021, 12:39 AM CDTWind63 mph3 SSW BERESFORD
Record
  • Sep 17, 2021, 12:39 AM CDT. Wind, 63 mph, 3 SSW BERESFORD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:dfb0f24efafa57a82d4c1373721a0c34f2ae0173b2cb4ca3c100a9eb4be34c7d.
How We Count

This page uses published ground reports from 2016-01-01 through 2026-10-29. Coverage is partial. 473 source scopes are pending. Pending data is not a zero report count.

Hail counts at 1.00 in or larger. Wind counts at 58 mph or stronger. State days also include tornado reports.

Reports use the local civil date and clock. City pages use the city clock. State pages use each report location clock.

Exact repeated observations are counted once. Nearby reports with different times, coordinates or sizes remain separate observations.

NCEI rows are verified against NCEI Storm Events. SPC and NWS local reports are preliminary.

Radar signatures and warning polygons are not ground reports and are not in these counts.

A missing report does not show that no storm occurred. These pages show city or state exposure, not damage at an address.

This free page covers the state. It does not check a street address.

Limits

This page is not a certified record.

This page shows weather exposure, not damage or cause.

This page is not an expert opinion and it is not a meteorologist review.

Verify these rows with official NOAA and NWS records.

VectorWX is not affiliated with or endorsed by NOAA or NWS.

Radar-estimated hail size comes from MRMS MESH or NCEI nx3hail. It is an estimate of hail aloft. It is not a measurement of hail on a roof.