Storms in South Dakota on May 27, 2018

23 published severe reports across South Dakota on May 27, 2018.

Updated Oct 28, 2026.

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

Hail reports: 4. Wind reports: 19. Tornado reports: 0.

The table and map show 23 of 23 reports.

Time	What	Size or Speed	Where	Details
May 27, 2018, 8:22 PM CDT	Wind	60 mph	ROSEBUD	Record May 27, 2018, 8:22 PM CDT. Wind, 60 mph, ROSEBUD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6c8fc895acd2733659325b0495356b961e189bafd4d87ce66a60ba45d363c9d0.
May 27, 2018, 8:22 PM CDT	Wind	60 mph	ROSEBUD	Record May 27, 2018, 8:22 PM CDT. Wind, 60 mph, ROSEBUD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748817.
May 27, 2018, 8:45 PM CDT	Hail	1.00 in	8 E MISSION	Record May 27, 2018, 8:45 PM CDT. Hail, 1.00 in, 8 E MISSION. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6c6ab1b07a324d0117ab0d991578fa43ef0cdf2e1394d32d6d23697466dbe628.
May 27, 2018, 8:45 PM CDT	Hail	1.00 in	MISSION	Record May 27, 2018, 8:45 PM CDT. Hail, 1.00 in, MISSION. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748821.
May 27, 2018, 8:45 PM CDT	Wind	100 mph	8 E MISSION	Record May 27, 2018, 8:45 PM CDT. Wind, 100 mph, 8 E MISSION. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:db83cb42bd112fdaa69b5117f76739212b4a51f309dc0d461b2f3f1c9ab98531.
May 27, 2018, 8:20 PM MDT	Wind	59 mph	8 W JEWEL CAVE	Record May 27, 2018, 8:20 PM MDT. Wind, 59 mph, 8 W JEWEL CAVE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0560e7053bc17d5efb66c6e2237ee0546ab4e7f60c0f61fa7023ed59851bde64.
May 27, 2018, 8:20 PM MDT	Wind	59 mph	JEWEL CAVE NATL MON	Record May 27, 2018, 8:20 PM MDT. Wind, 59 mph, JEWEL CAVE NATL MON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748822.
May 27, 2018, 8:23 PM MDT	Hail	1.00 in	OELRICHS	Record May 27, 2018, 8:23 PM MDT. Hail, 1.00 in, OELRICHS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748824.
May 27, 2018, 8:23 PM MDT	Wind	100 mph	OELRICHS	Record May 27, 2018, 8:23 PM MDT. Wind, 100 mph, OELRICHS. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:24ab30d8896cc5f7ea1c93492419759ffa46668724321d25f7ffeb2cd46596e8.
May 27, 2018, 8:48 PM MDT	Wind	70 mph	ORAL	Record May 27, 2018, 8:48 PM MDT. Wind, 70 mph, ORAL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748825.
May 27, 2018, 8:50 PM MDT	Wind	60 mph	2 NE ORAL	Record May 27, 2018, 8:50 PM MDT. Wind, 60 mph, 2 NE ORAL. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0b2c7d2ff05e106b2ed139d627316f2a5e410a4493a6c7d712a3e4f0a489de9f.
May 27, 2018, 8:50 PM MDT	Wind	60 mph	ORAL	Record May 27, 2018, 8:50 PM MDT. Wind, 60 mph, ORAL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748826.
May 27, 2018, 9:23 PM MDT	Wind	72 mph	3 WSW FAIRBURN	Record May 27, 2018, 9:23 PM MDT. Wind, 72 mph, 3 WSW FAIRBURN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:96a3dfdd6d7e2e7af5ac220fdcd1056b46aa1a7435b9bed96c350198eb1834e4.
May 27, 2018, 9:23 PM MDT	Wind	72 mph	FAIRBURN	Record May 27, 2018, 9:23 PM MDT. Wind, 72 mph, FAIRBURN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748827.
May 27, 2018, 9:27 PM MDT	Wind	70 mph	FAIRBURN	Record May 27, 2018, 9:27 PM MDT. Wind, 70 mph, FAIRBURN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748828.
May 27, 2018, 9:30 PM MDT	Wind	60 mph	5 NE PORCUPINE	Record May 27, 2018, 9:30 PM MDT. Wind, 60 mph, 5 NE PORCUPINE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:565fba761d82f3f646d2140def0ed78ec7a23379cdbab731c3aa90bd4076198c.
May 27, 2018, 9:30 PM MDT	Wind	60 mph	PORCUPINE	Record May 27, 2018, 9:30 PM MDT. Wind, 60 mph, PORCUPINE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748832.
May 27, 2018, 10:14 PM MDT	Wind	60 mph	4 NE ROCKERVILLE	Record May 27, 2018, 10:14 PM MDT. Wind, 60 mph, 4 NE ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0e0f0e3af18ecf3d720443bfd519e7594121d4faec1eab4223e94c5f71c8b4ce.
May 27, 2018, 10:14 PM MDT	Wind	60 mph	ROCKERVILLE	Record May 27, 2018, 10:14 PM MDT. Wind, 60 mph, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748829.
May 27, 2018, 10:23 PM MDT	Wind	76 mph	5 WNW NEW UNDERWOOD	Record May 27, 2018, 10:23 PM MDT. Wind, 76 mph, 5 WNW NEW UNDERWOOD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e539bc3ca3ec6b83a04c08a7ba208da0e3306a25f33d172feb30eb52b1a6bb04.
May 27, 2018, 10:23 PM MDT	Wind	77 mph	NEW UNDERWOOD	Record May 27, 2018, 10:23 PM MDT. Wind, 77 mph, NEW UNDERWOOD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748830.
May 27, 2018, 11:42 PM CDT	Hail	1.00 in	ONIDA	Record May 27, 2018, 11:42 PM CDT. Hail, 1.00 in, ONIDA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:759725.
May 27, 2018, 11:42 PM CDT	Wind	100 mph	7 ENE BLUNT	Record May 27, 2018, 11:42 PM CDT. Wind, 100 mph, 7 ENE BLUNT. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:3a28381e0d8eab2a55117c07d1f1e82ff84fc9c0f2e640a007fa0ecd8f64005d.

Wind, 60 mph

May 27, 2018, 8:22 PM CDT

ROSEBUD
Record
- May 27, 2018, 8:22 PM CDT. Wind, 60 mph, ROSEBUD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6c8fc895acd2733659325b0495356b961e189bafd4d87ce66a60ba45d363c9d0.
Wind, 60 mph

May 27, 2018, 8:22 PM CDT

ROSEBUD
Record
- May 27, 2018, 8:22 PM CDT. Wind, 60 mph, ROSEBUD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748817.
Hail, 1.00 in

May 27, 2018, 8:45 PM CDT

8 E MISSION
Record
- May 27, 2018, 8:45 PM CDT. Hail, 1.00 in, 8 E MISSION. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6c6ab1b07a324d0117ab0d991578fa43ef0cdf2e1394d32d6d23697466dbe628.
Hail, 1.00 in

May 27, 2018, 8:45 PM CDT

MISSION
Record
- May 27, 2018, 8:45 PM CDT. Hail, 1.00 in, MISSION. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748821.
Wind, 100 mph

May 27, 2018, 8:45 PM CDT

8 E MISSION
Record
- May 27, 2018, 8:45 PM CDT. Wind, 100 mph, 8 E MISSION. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:db83cb42bd112fdaa69b5117f76739212b4a51f309dc0d461b2f3f1c9ab98531.
Wind, 59 mph

May 27, 2018, 8:20 PM MDT

8 W JEWEL CAVE
Record
- May 27, 2018, 8:20 PM MDT. Wind, 59 mph, 8 W JEWEL CAVE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0560e7053bc17d5efb66c6e2237ee0546ab4e7f60c0f61fa7023ed59851bde64.
Wind, 59 mph

May 27, 2018, 8:20 PM MDT

JEWEL CAVE NATL MON
Record
- May 27, 2018, 8:20 PM MDT. Wind, 59 mph, JEWEL CAVE NATL MON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748822.
Hail, 1.00 in

May 27, 2018, 8:23 PM MDT

OELRICHS
Record
- May 27, 2018, 8:23 PM MDT. Hail, 1.00 in, OELRICHS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748824.
Wind, 100 mph

May 27, 2018, 8:23 PM MDT

OELRICHS
Record
- May 27, 2018, 8:23 PM MDT. Wind, 100 mph, OELRICHS. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:24ab30d8896cc5f7ea1c93492419759ffa46668724321d25f7ffeb2cd46596e8.
Wind, 70 mph

May 27, 2018, 8:48 PM MDT

ORAL
Record
- May 27, 2018, 8:48 PM MDT. Wind, 70 mph, ORAL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748825.
Wind, 60 mph

May 27, 2018, 8:50 PM MDT

2 NE ORAL
Record
- May 27, 2018, 8:50 PM MDT. Wind, 60 mph, 2 NE ORAL. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0b2c7d2ff05e106b2ed139d627316f2a5e410a4493a6c7d712a3e4f0a489de9f.
Wind, 60 mph

May 27, 2018, 8:50 PM MDT

ORAL
Record
- May 27, 2018, 8:50 PM MDT. Wind, 60 mph, ORAL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748826.
Wind, 72 mph

May 27, 2018, 9:23 PM MDT

3 WSW FAIRBURN
Record
- May 27, 2018, 9:23 PM MDT. Wind, 72 mph, 3 WSW FAIRBURN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:96a3dfdd6d7e2e7af5ac220fdcd1056b46aa1a7435b9bed96c350198eb1834e4.
Wind, 72 mph

May 27, 2018, 9:23 PM MDT

FAIRBURN
Record
- May 27, 2018, 9:23 PM MDT. Wind, 72 mph, FAIRBURN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748827.
Wind, 70 mph

May 27, 2018, 9:27 PM MDT

FAIRBURN
Record
- May 27, 2018, 9:27 PM MDT. Wind, 70 mph, FAIRBURN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748828.
Wind, 60 mph

May 27, 2018, 9:30 PM MDT

5 NE PORCUPINE
Record
- May 27, 2018, 9:30 PM MDT. Wind, 60 mph, 5 NE PORCUPINE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:565fba761d82f3f646d2140def0ed78ec7a23379cdbab731c3aa90bd4076198c.
Wind, 60 mph

May 27, 2018, 9:30 PM MDT

PORCUPINE
Record
- May 27, 2018, 9:30 PM MDT. Wind, 60 mph, PORCUPINE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748832.
Wind, 60 mph

May 27, 2018, 10:14 PM MDT

4 NE ROCKERVILLE
Record
- May 27, 2018, 10:14 PM MDT. Wind, 60 mph, 4 NE ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0e0f0e3af18ecf3d720443bfd519e7594121d4faec1eab4223e94c5f71c8b4ce.
Wind, 60 mph

May 27, 2018, 10:14 PM MDT

ROCKERVILLE
Record
- May 27, 2018, 10:14 PM MDT. Wind, 60 mph, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748829.
Wind, 76 mph

May 27, 2018, 10:23 PM MDT

5 WNW NEW UNDERWOOD
Record
- May 27, 2018, 10:23 PM MDT. Wind, 76 mph, 5 WNW NEW UNDERWOOD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e539bc3ca3ec6b83a04c08a7ba208da0e3306a25f33d172feb30eb52b1a6bb04.
Wind, 77 mph

May 27, 2018, 10:23 PM MDT

NEW UNDERWOOD
Record
- May 27, 2018, 10:23 PM MDT. Wind, 77 mph, NEW UNDERWOOD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:748830.
Hail, 1.00 in

May 27, 2018, 11:42 PM CDT

ONIDA
Record
- May 27, 2018, 11:42 PM CDT. Hail, 1.00 in, ONIDA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:759725.
Wind, 100 mph

May 27, 2018, 11:42 PM CDT

7 ENE BLUNT
Record
- May 27, 2018, 11:42 PM CDT. Wind, 100 mph, 7 ENE BLUNT. Source: SPC Preliminary Reports. Status: Preliminary. Record id: spc:3a28381e0d8eab2a55117c07d1f1e82ff84fc9c0f2e640a007fa0ecd8f64005d.

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.