Pilot Index / Montana / May 21, 2016

Preliminary

Storms in Montana on May 21, 2016

74 published severe reports across Montana on May 21, 2016.

Updated Oct 28, 2026.

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

Hail reports: 43. Wind reports: 30. Tornado reports: 1.

The table and map show 40 of 74 reports.

TimeWhatSize or SpeedWhereDetails
May 21, 2016, 2:05 PM MDTWind60 mph7 W BOYD
Record
  • May 21, 2016, 2:05 PM MDT. Wind, 60 mph, 7 W BOYD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b25e2741d032437af431d7404b3c19b605c747b9c5fe528a2099999ba47e04b3.
May 21, 2016, 2:05 PM MDTHail1.00 inCOLUMBUS
Record
  • May 21, 2016, 2:05 PM MDT. Hail, 1.00 in, COLUMBUS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629779.
May 21, 2016, 2:05 PM MDTWind60 mphROBERTS BANGART ARPT
Record
  • May 21, 2016, 2:05 PM MDT. Wind, 60 mph, ROBERTS BANGART ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629780.
May 21, 2016, 2:05 PM MDTHail1.00 inROBERTS BANGART ARPT
Record
  • May 21, 2016, 2:05 PM MDT. Hail, 1.00 in, ROBERTS BANGART ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629781.
May 21, 2016, 2:20 PM MDTHail1.00 inCOLUMBUS
Record
  • May 21, 2016, 2:20 PM MDT. Hail, 1.00 in, COLUMBUS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629777.
May 21, 2016, 2:30 PM MDTHail1.00 inJOLIET
Record
  • May 21, 2016, 2:30 PM MDT. Hail, 1.00 in, JOLIET. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629776.
May 21, 2016, 2:45 PM MDTHail1.50 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 2:45 PM MDT. Hail, 1.50 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629775.
May 21, 2016, 2:47 PM MDTHail1.00 inLAUREL
Record
  • May 21, 2016, 2:47 PM MDT. Hail, 1.00 in, LAUREL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629774.
May 21, 2016, 2:51 PM MDTHail1.00 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 2:51 PM MDT. Hail, 1.00 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629773.
May 21, 2016, 2:52 PM MDTHail1.75 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 2:52 PM MDT. Hail, 1.75 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629772.
May 21, 2016, 2:55 PM MDTHail2.00 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 2:55 PM MDT. Hail, 2.00 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629771.
May 21, 2016, 2:59 PM MDTHail1.25 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 2:59 PM MDT. Hail, 1.25 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629769.
May 21, 2016, 2:59 PM MDTHail1.25 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 2:59 PM MDT. Hail, 1.25 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629770.
May 21, 2016, 3:00 PM MDTWind66 mph3 NW BILLINGS
Record
  • May 21, 2016, 3:00 PM MDT. Wind, 66 mph, 3 NW BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:272e6cdf78c041c09ca4a3a3cbbfc7462570f114a6a549a212bc0b33eb2556a1.
May 21, 2016, 3:00 PM MDTWind66 mph(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Wind, 66 mph, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629764.
May 21, 2016, 3:00 PM MDTHail2.00 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 2.00 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629765.
May 21, 2016, 3:00 PM MDTHail1.00 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 1.00 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629766.
May 21, 2016, 3:00 PM MDTHail1.00 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 1.00 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629767.
May 21, 2016, 3:00 PM MDTHail1.25 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 1.25 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629768.
May 21, 2016, 3:00 PM MDTHail1.25 inLAUREL MUNI ARPT
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 1.25 in, LAUREL MUNI ARPT. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629784.
May 21, 2016, 3:00 PM MDTHail2.00 inBILLINGS HGTS
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 2.00 in, BILLINGS HGTS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629785.
May 21, 2016, 3:00 PM MDTHail1.75 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 1.75 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629786.
May 21, 2016, 3:00 PM MDTHail2.00 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:00 PM MDT. Hail, 2.00 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629787.
May 21, 2016, 3:01 PM MDTHail1.75 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:01 PM MDT. Hail, 1.75 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629763.
May 21, 2016, 3:03 PM MDTHail1.75 in(BIL)LOGAN ARPT BILL
Record
  • May 21, 2016, 3:03 PM MDT. Hail, 1.75 in, (BIL)LOGAN ARPT BILL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629762.
May 21, 2016, 3:05 PM MDTHail1.75 inBILLINGS
Record
  • May 21, 2016, 3:05 PM MDT. Hail, 1.75 in, BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:39c360d0bf010f57ea2b7b8571c283cd60eaf09105a5de38efb17161be8092d0.
May 21, 2016, 3:07 PM MDTHail1.75 inBILLINGS
Record
  • May 21, 2016, 3:07 PM MDT. Hail, 1.75 in, BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:151cf7e060de355b2c4fe2e52d6a3f8edd21c023c7b337fa4147377488443879.
May 21, 2016, 3:07 PM MDTHail1.75 inBILLINGS
Record
  • May 21, 2016, 3:07 PM MDT. Hail, 1.75 in, BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:d1e73ae05aad9a26c4ad238571ff74e41239e13feed63dc612187c3f967511ea.
May 21, 2016, 3:10 PM MDTHail1.75 inBILLINGS
Record
  • May 21, 2016, 3:10 PM MDT. Hail, 1.75 in, BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:5cdf620a72109bb2269bcd5e21cf5c7ac2be0d1e6e60339571c4b1f1bd2d3fe3.
May 21, 2016, 3:10 PM MDTHail1.75 inBILLINGS HGTS
Record
  • May 21, 2016, 3:10 PM MDT. Hail, 1.75 in, BILLINGS HGTS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629783.
May 21, 2016, 3:15 PM MDTHail1.75 inBILLINGS HGTS
Record
  • May 21, 2016, 3:15 PM MDT. Hail, 1.75 in, BILLINGS HGTS. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629782.
May 21, 2016, 3:17 PM MDTHail2.00 inSHEPHERD
Record
  • May 21, 2016, 3:17 PM MDT. Hail, 2.00 in, SHEPHERD. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:629761.
May 21, 2016, 3:18 PM MDTWind61 mph17 S FORT SMITH
Record
  • May 21, 2016, 3:18 PM MDT. Wind, 61 mph, 17 S FORT SMITH. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:11e53bbf9ee077d16bd6618f0d29c135eaa33523fcee91d1d8bb6d5543204657.
May 21, 2016, 3:25 PM MDTHail1.75 in5 WNW BILLINGS
Record
  • May 21, 2016, 3:25 PM MDT. Hail, 1.75 in, 5 WNW BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:15853f8b32bf3611facc61b7eef2a983d4d7ae86536deefe1651ba474f49ecde.
May 21, 2016, 3:25 PM MDTHail1.00 inBILLINGS
Record
  • May 21, 2016, 3:25 PM MDT. Hail, 1.00 in, BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:27ae40c1e93f98b9a45dc83bd835171484d9cc2f824c9d2c4750af8be8e05d6b.
May 21, 2016, 3:45 PM MDTHail1.00 inGAGE
Record
  • May 21, 2016, 3:45 PM MDT. Hail, 1.00 in, GAGE. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:628059.
May 21, 2016, 3:50 PM MDTTornadoPOMPEYS PILLAR
Record
  • May 21, 2016, 3:50 PM MDT. Tornado, POMPEYS PILLAR. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:638862.
May 21, 2016, 4:10 PM MDTWind60 mph9 SE MUSSELSHELL
Record
  • May 21, 2016, 4:10 PM MDT. Wind, 60 mph, 9 SE MUSSELSHELL. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:dbc96a696076ec2d7736e81e7cbbe984d568c9df7f7c7264d5d90c808e194dbf.
May 21, 2016, 4:10 PM MDTHail1.00 inMUSSELSHELL
Record
  • May 21, 2016, 4:10 PM MDT. Hail, 1.00 in, MUSSELSHELL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:628057.
May 21, 2016, 4:10 PM MDTWind60 mphMUSSELSHELL
Record
  • May 21, 2016, 4:10 PM MDT. Wind, 60 mph, MUSSELSHELL. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:628058.
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.