Pilot Index / Montana / Jul 21, 2021

Preliminary

Storms in Montana on Jul 21, 2021

16 published severe reports across Montana on Jul 21, 2021.

Updated Oct 28, 2026.

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

Hail reports: 11. Wind reports: 5. Tornado reports: 0.

The table and map show 16 of 16 reports.

TimeWhatSize or SpeedWhereDetails
Jul 21, 2021, 5:13 PM MDTHail1.00 inPOTOMAC
Record
  • Jul 21, 2021, 5:13 PM MDT. Hail, 1.00 in, POTOMAC. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:967113.
Jul 21, 2021, 5:26 PM MDTWind65 mph8 W TOWNSEND
Record
  • Jul 21, 2021, 5:26 PM MDT. Wind, 65 mph, 8 W TOWNSEND. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:dbccd39dfbee18ae417ddf3d15c338cf7816c94ec620302fce8142c4bc2c0975.
Jul 21, 2021, 5:26 PM MDTWind64 mphTOWNSEND
Record
  • Jul 21, 2021, 5:26 PM MDT. Wind, 64 mph, TOWNSEND. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:972544.
Jul 21, 2021, 5:28 PM MDTWind61 mph3 WNW TOWNSEND
Record
  • Jul 21, 2021, 5:28 PM MDT. Wind, 61 mph, 3 WNW TOWNSEND. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:cb66a3a1a251476ccfbf154b1416966d240939d6c6f7215a5a5eace515d6a5af.
Jul 21, 2021, 5:28 PM MDTHail1.00 in1 NW POTOMAC
Record
  • Jul 21, 2021, 5:28 PM MDT. Hail, 1.00 in, 1 NW POTOMAC. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:db9a3234e1d5bf4b54056c56e27de9e1984bc05d6d553c248d8725caf9d1b77b.
Jul 21, 2021, 5:28 PM MDTWind61 mphTOWNSEND
Record
  • Jul 21, 2021, 5:28 PM MDT. Wind, 61 mph, TOWNSEND. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:972545.
Jul 21, 2021, 5:45 PM MDTHail1.00 inCLEARWATER
Record
  • Jul 21, 2021, 5:45 PM MDT. Hail, 1.00 in, CLEARWATER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:18c87fd08404780d0d22c9bceeb26a8f0c9c95787f60185e260c8427df6a5475.
Jul 21, 2021, 6:07 PM MDTHail1.00 inOVANDO
Record
  • Jul 21, 2021, 6:07 PM MDT. Hail, 1.00 in, OVANDO. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:967119.
Jul 21, 2021, 6:45 PM MDTHail2.00 inGARNET
Record
  • Jul 21, 2021, 6:45 PM MDT. Hail, 2.00 in, GARNET. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:967129.
Jul 21, 2021, 7:19 PM MDTHail1.75 in1 ESE GARNET
Record
  • Jul 21, 2021, 7:19 PM MDT. Hail, 1.75 in, 1 ESE GARNET. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b119b635ac71a9cec5646de3596d5b9c1a83f20df1f6524683e857de9176d215.
Jul 21, 2021, 7:45 PM MDTHail1.75 in4 WNW OVANDO
Record
  • Jul 21, 2021, 7:45 PM MDT. Hail, 1.75 in, 4 WNW OVANDO. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:33bd6ef360dcccbedd7418de10d8f28d7a8bc8cdd05e61da384e3c1f5118d83b.
Jul 21, 2021, 8:27 PM MDTHail1.00 in24 W AUGUSTA
Record
  • Jul 21, 2021, 8:27 PM MDT. Hail, 1.00 in, 24 W AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:73ec74e4651a0f4185bf1afad60153e1e3435287fd6b9f89011ac91d49eddd8a.
Jul 21, 2021, 8:27 PM MDTHail1.00 inAUGUSTA
Record
  • Jul 21, 2021, 8:27 PM MDT. Hail, 1.00 in, AUGUSTA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:972546.
Jul 21, 2021, 9:00 PM MDTHail1.00 in19 WNW AUGUSTA
Record
  • Jul 21, 2021, 9:00 PM MDT. Hail, 1.00 in, 19 WNW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:b3312c1e2ad4cd878be4ebb56674dcaec5a4ef26530b149c7f0189dc45fb8ebb.
Jul 21, 2021, 9:00 PM MDTHail1.00 inAUGUSTA
Record
  • Jul 21, 2021, 9:00 PM MDT. Hail, 1.00 in, AUGUSTA. Source: NCEI Storm Events. Status: Verified against NCEI Storm Events. Record id: ncei:980564.
Jul 21, 2021, 9:53 PM MDTWind58 mph4 W HAVRE
Record
  • Jul 21, 2021, 9:53 PM MDT. Wind, 58 mph, 4 W HAVRE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:a65c68a8b49924160a92591b6c50ec72516be2a2c9164daec925fb1d68d901e3.
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.