Pilot Index / Montana / May 20, 2020

Preliminary

Storms in Montana on May 20, 2020

102 published severe reports across Montana on May 20, 2020.

Updated Oct 28, 2026.

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

Hail reports: 21. Wind reports: 80. Tornado reports: 1.

The table and map show 40 of 102 reports.

TimeWhatSize or SpeedWhereDetails
May 20, 2020, 12:47 AM MDTHail1.25 inRAPELJE
Record
  • May 20, 2020, 12:47 AM MDT. Hail, 1.25 in, RAPELJE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889101.
May 20, 2020, 1:08 AM MDTHail1.75 inRYEGATE ARPT
Record
  • May 20, 2020, 1:08 AM MDT. Hail, 1.75 in, RYEGATE ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889493.
May 20, 2020, 1:11 AM MDTHail1.00 inRYEGATE
Record
  • May 20, 2020, 1:11 AM MDT. Hail, 1.00 in, RYEGATE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889494.
May 20, 2020, 1:19 AM MDTHail2.50 inLAVINA ARPT
Record
  • May 20, 2020, 1:19 AM MDT. Hail, 2.50 in, LAVINA ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889496.
May 20, 2020, 1:52 AM MDTHail1.00 inMANCHESTER
Record
  • May 20, 2020, 1:52 AM MDT. Hail, 1.00 in, MANCHESTER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889395.
May 20, 2020, 2:01 AM MDTHail1.00 in1 E VAUGHN
Record
  • May 20, 2020, 2:01 AM MDT. Hail, 1.00 in, 1 E VAUGHN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:960beba551d6ecfcd7aa1a58bebd22f5fb6edf0a0cd78972c582cf2cd86cf38b.
May 20, 2020, 2:01 AM MDTHail1.25 inVAUGHN
Record
  • May 20, 2020, 2:01 AM MDT. Hail, 1.25 in, VAUGHN. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889300.
May 20, 2020, 2:40 AM MDTHail1.75 inWINNETT
Record
  • May 20, 2020, 2:40 AM MDT. Hail, 1.75 in, WINNETT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:883853.
May 20, 2020, 4:34 PM MDTHail1.25 inVOLBORG
Record
  • May 20, 2020, 4:34 PM MDT. Hail, 1.25 in, VOLBORG. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889108.
May 20, 2020, 5:25 PM MDTHail2.00 inMOON CREEK
Record
  • May 20, 2020, 5:25 PM MDT. Hail, 2.00 in, MOON CREEK. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889110.
May 20, 2020, 5:45 PM MDTHail1.00 inMILES CITY
Record
  • May 20, 2020, 5:45 PM MDT. Hail, 1.00 in, MILES CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889417.
May 20, 2020, 5:50 PM MDTWind70 mphBIDDLE
Record
  • May 20, 2020, 5:50 PM MDT. Wind, 70 mph, BIDDLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889129.
May 20, 2020, 5:58 PM MDTHail2.00 inMILES CITY
Record
  • May 20, 2020, 5:58 PM MDT. Hail, 2.00 in, MILES CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889122.
May 20, 2020, 5:58 PM MDTHail1.50 inMILES CITY
Record
  • May 20, 2020, 5:58 PM MDT. Hail, 1.50 in, MILES CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889123.
May 20, 2020, 6:00 PM MDTWind70 mphRIDGE
Record
  • May 20, 2020, 6:00 PM MDT. Wind, 70 mph, RIDGE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889130.
May 20, 2020, 6:00 PM MDTWind70 mphBIDDLE
Record
  • May 20, 2020, 6:00 PM MDT. Wind, 70 mph, BIDDLE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889131.
May 20, 2020, 6:05 PM MDTHail1.50 inMILES CITY
Record
  • May 20, 2020, 6:05 PM MDT. Hail, 1.50 in, MILES CITY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889124.
May 20, 2020, 6:07 PM MDTWind59 mph8 E LAME DEER
Record
  • May 20, 2020, 6:07 PM MDT. Wind, 59 mph, 8 E LAME DEER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:a67bbb2ff6f151610f08df38ba3b2552a674bb1d1bb80b81b94c3965e7400b31.
May 20, 2020, 6:07 PM MDTWind59 mphLAME DEER
Record
  • May 20, 2020, 6:07 PM MDT. Wind, 59 mph, LAME DEER. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889134.
May 20, 2020, 6:09 PM MDTHail2.50 inKINSEY
Record
  • May 20, 2020, 6:09 PM MDT. Hail, 2.50 in, KINSEY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889126.
May 20, 2020, 6:10 PM MDTWind72 mph8 ENE LAME DEER
Record
  • May 20, 2020, 6:10 PM MDT. Wind, 72 mph, 8 ENE LAME DEER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:53fd160013d9ae99e8c4a2e261bf929f66619a0d3dc1baeb54a92ee322ad10e4.
May 20, 2020, 6:19 PM MDTWind58 mph1 WNW INGOMAR
Record
  • May 20, 2020, 6:19 PM MDT. Wind, 58 mph, 1 WNW INGOMAR. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:d736af9a8d68e78853838b8f507e79d96d157ee302d495ae3ef6e11adaee3a11.
May 20, 2020, 6:19 PM MDTWind59 mph12 S RIDGEWAY
Record
  • May 20, 2020, 6:19 PM MDT. Wind, 59 mph, 12 S RIDGEWAY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:da62ffff74359aa8ca17f8e77a10cab6d365eb3f456f889fd711c6dce36e140a.
May 20, 2020, 6:19 PM MDTWind59 mphRIDGEWAY
Record
  • May 20, 2020, 6:19 PM MDT. Wind, 59 mph, RIDGEWAY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889135.
May 20, 2020, 6:20 PM MDTHail2.00 inKINSEY
Record
  • May 20, 2020, 6:20 PM MDT. Hail, 2.00 in, KINSEY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889127.
May 20, 2020, 6:30 PM MDTHail1.75 inKINSEY
Record
  • May 20, 2020, 6:30 PM MDT. Hail, 1.75 in, KINSEY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889128.
May 20, 2020, 7:00 PM MDTWind60 mphHATHAWAY
Record
  • May 20, 2020, 7:00 PM MDT. Wind, 60 mph, HATHAWAY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889132.
May 20, 2020, 7:10 PM MDTWind58 mph9 NE INGOMAR
Record
  • May 20, 2020, 7:10 PM MDT. Wind, 58 mph, 9 NE INGOMAR. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:7f75ad690893b984d220cd91ee7a89e7fe5078b03ef018b65b0e50ca2b838e5a.
May 20, 2020, 7:16 PM MDTWind62 mph3 WNW MILES CITY
Record
  • May 20, 2020, 7:16 PM MDT. Wind, 62 mph, 3 WNW MILES CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:97c5832379917ae5da0c82bd48f45f403e3716be4a6aa857bbedc401b900dcc0.
May 20, 2020, 7:18 PM MDTWind58 mph17 S FORT SMITH
Record
  • May 20, 2020, 7:18 PM MDT. Wind, 58 mph, 17 S FORT SMITH. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:645f69be752b9d6a9c8a865f0c6fd136f697a77f01e9e62f1654d9ddc172493e.
May 20, 2020, 7:18 PM MDTHail1.00 inMC CLOUD
Record
  • May 20, 2020, 7:18 PM MDT. Hail, 1.00 in, MC CLOUD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:883993.
May 20, 2020, 7:19 PM MDTWind66 mph3 WNW MILES CITY
Record
  • May 20, 2020, 7:19 PM MDT. Wind, 66 mph, 3 WNW MILES CITY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:5cd5fa03f3e9c3c7291fbf5acb33ceea5f391fca93fa212657bb51518500c1e0.
May 20, 2020, 7:19 PM MDTWind66 mphMILES CITY ARPT
Record
  • May 20, 2020, 7:19 PM MDT. Wind, 66 mph, MILES CITY ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889137.
May 20, 2020, 7:26 PM MDTWind60 mphKINSEY
Record
  • May 20, 2020, 7:26 PM MDT. Wind, 60 mph, KINSEY. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889133.
May 20, 2020, 7:38 PM MDTWind75 mph2 NW ROCK SPRINGS
Record
  • May 20, 2020, 7:38 PM MDT. Wind, 75 mph, 2 NW ROCK SPRINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1f2beed6efdb382d9594ee0dd790dc6681f7960541a3e662c7674a5979f3fb45.
May 20, 2020, 7:38 PM MDTWind75 mphROCK SPGS
Record
  • May 20, 2020, 7:38 PM MDT. Wind, 75 mph, ROCK SPGS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:889138.
May 20, 2020, 7:49 PM MDTWind58 mph4 WSW SAND SPRINGS
Record
  • May 20, 2020, 7:49 PM MDT. Wind, 58 mph, 4 WSW SAND SPRINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:321046c729732e7b525c4d391b84e745a6fbb21a6e7e9f8659983f970d4b2e00.
May 20, 2020, 7:50 PM MDTWind70 mph10 WNW MCCLOUD
Record
  • May 20, 2020, 7:50 PM MDT. Wind, 70 mph, 10 WNW MCCLOUD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:32944343a03a2836f72123291357daaf6896cde81fbeb45659ee786ff7b8a068.
May 20, 2020, 7:50 PM MDTWind60 mph10 WNW MCCLOUD
Record
  • May 20, 2020, 7:50 PM MDT. Wind, 60 mph, 10 WNW MCCLOUD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e1666642f9c1031a40eab1cc43b6264178847c99c64c6572a9c054d2655a55ae.
May 20, 2020, 7:50 PM MDTWind70 mphMC CLOUD
Record
  • May 20, 2020, 7:50 PM MDT. Wind, 70 mph, MC CLOUD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:884034.
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.