Storms in South Dakota on Jul 20, 2016

12 published severe reports across South Dakota on Jul 20, 2016.

Updated Oct 28, 2026.

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

Hail reports: 10. Wind reports: 2. Tornado reports: 0.

The table and map show 12 of 12 reports.

Time	What	Size or Speed	Where	Details
Jul 20, 2016, 3:15 PM MDT	Hail	1.50 in	REVA	Record Jul 20, 2016, 3:15 PM MDT. Hail, 1.50 in, REVA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644646.
Jul 20, 2016, 3:53 PM MDT	Hail	1.50 in	PRAIRIE CITY	Record Jul 20, 2016, 3:53 PM MDT. Hail, 1.50 in, PRAIRIE CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:a9a333d1b202b69a277d50e8f6600c5361e84a2001b1d2e65853308faf92413f.
Jul 20, 2016, 3:53 PM MDT	Hail	1.50 in	PRAIRIE CITY	Record Jul 20, 2016, 3:53 PM MDT. Hail, 1.50 in, PRAIRIE CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644649.
Jul 20, 2016, 3:55 PM MDT	Hail	1.00 in	PRAIRIE CITY	Record Jul 20, 2016, 3:55 PM MDT. Hail, 1.00 in, PRAIRIE CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:49c01bc89faedfd12df8b72745ce4da8ee174e0d672c2f894217d60713f0beda.
Jul 20, 2016, 4:40 PM MDT	Hail	1.00 in	9 WSW WHITE BUTTE	Record Jul 20, 2016, 4:40 PM MDT. Hail, 1.00 in, 9 WSW WHITE BUTTE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:38081e5e024cf862f869a16ce3aac070021167c263e3522a23ed137ed29ab659.
Jul 20, 2016, 4:40 PM MDT	Hail	1.00 in	WHITE BUTTE	Record Jul 20, 2016, 4:40 PM MDT. Hail, 1.00 in, WHITE BUTTE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644651.
Jul 20, 2016, 4:46 PM MDT	Hail	1.75 in	6 SSE BISON	Record Jul 20, 2016, 4:46 PM MDT. Hail, 1.75 in, 6 SSE BISON. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e1d63a5d88bed59b8bee129f4bad13acea40c84eed33b0ff49077eb268d78ef9.
Jul 20, 2016, 4:46 PM MDT	Hail	1.75 in	BISON	Record Jul 20, 2016, 4:46 PM MDT. Hail, 1.75 in, BISON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644650.
Jul 20, 2016, 6:00 PM MDT	Hail	1.00 in	5 E ROCKERVILLE	Record Jul 20, 2016, 6:00 PM MDT. Hail, 1.00 in, 5 E ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:60299c8024b9e2073e13b75008753d3f3d2be1a0fb5c1ba7e249a157246c8c59.
Jul 20, 2016, 6:00 PM MDT	Wind	60 mph	5 E ROCKERVILLE	Record Jul 20, 2016, 6:00 PM MDT. Wind, 60 mph, 5 E ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6b22a5526dc89f708d61cf80f1bca2408fcb5ded4464ec41b7f51e634c96dfd4.
Jul 20, 2016, 6:00 PM MDT	Hail	1.00 in	ROCKERVILLE	Record Jul 20, 2016, 6:00 PM MDT. Hail, 1.00 in, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644654.
Jul 20, 2016, 6:00 PM MDT	Wind	60 mph	ROCKERVILLE	Record Jul 20, 2016, 6:00 PM MDT. Wind, 60 mph, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644655.

Hail, 1.50 in

Jul 20, 2016, 3:15 PM MDT

REVA
Record
- Jul 20, 2016, 3:15 PM MDT. Hail, 1.50 in, REVA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644646.
Hail, 1.50 in

Jul 20, 2016, 3:53 PM MDT

PRAIRIE CITY
Record
- Jul 20, 2016, 3:53 PM MDT. Hail, 1.50 in, PRAIRIE CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:a9a333d1b202b69a277d50e8f6600c5361e84a2001b1d2e65853308faf92413f.
Hail, 1.50 in

Jul 20, 2016, 3:53 PM MDT

PRAIRIE CITY
Record
- Jul 20, 2016, 3:53 PM MDT. Hail, 1.50 in, PRAIRIE CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644649.
Hail, 1.00 in

Jul 20, 2016, 3:55 PM MDT

PRAIRIE CITY
Record
- Jul 20, 2016, 3:55 PM MDT. Hail, 1.00 in, PRAIRIE CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:49c01bc89faedfd12df8b72745ce4da8ee174e0d672c2f894217d60713f0beda.
Hail, 1.00 in

Jul 20, 2016, 4:40 PM MDT

9 WSW WHITE BUTTE
Record
- Jul 20, 2016, 4:40 PM MDT. Hail, 1.00 in, 9 WSW WHITE BUTTE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:38081e5e024cf862f869a16ce3aac070021167c263e3522a23ed137ed29ab659.
Hail, 1.00 in

Jul 20, 2016, 4:40 PM MDT

WHITE BUTTE
Record
- Jul 20, 2016, 4:40 PM MDT. Hail, 1.00 in, WHITE BUTTE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644651.
Hail, 1.75 in

Jul 20, 2016, 4:46 PM MDT

6 SSE BISON
Record
- Jul 20, 2016, 4:46 PM MDT. Hail, 1.75 in, 6 SSE BISON. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e1d63a5d88bed59b8bee129f4bad13acea40c84eed33b0ff49077eb268d78ef9.
Hail, 1.75 in

Jul 20, 2016, 4:46 PM MDT

BISON
Record
- Jul 20, 2016, 4:46 PM MDT. Hail, 1.75 in, BISON. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644650.
Hail, 1.00 in

Jul 20, 2016, 6:00 PM MDT

5 E ROCKERVILLE
Record
- Jul 20, 2016, 6:00 PM MDT. Hail, 1.00 in, 5 E ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:60299c8024b9e2073e13b75008753d3f3d2be1a0fb5c1ba7e249a157246c8c59.
Wind, 60 mph

Jul 20, 2016, 6:00 PM MDT

5 E ROCKERVILLE
Record
- Jul 20, 2016, 6:00 PM MDT. Wind, 60 mph, 5 E ROCKERVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:6b22a5526dc89f708d61cf80f1bca2408fcb5ded4464ec41b7f51e634c96dfd4.
Hail, 1.00 in

Jul 20, 2016, 6:00 PM MDT

ROCKERVILLE
Record
- Jul 20, 2016, 6:00 PM MDT. Hail, 1.00 in, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644654.
Wind, 60 mph

Jul 20, 2016, 6:00 PM MDT

ROCKERVILLE
Record
- Jul 20, 2016, 6:00 PM MDT. Wind, 60 mph, ROCKERVILLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:644655.

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.