Pilot Index / Montana / Dec 21, 2018

Preliminary

Storms in Montana on Dec 21, 2018

10 published severe reports across Montana on Dec 21, 2018.

Updated Oct 28, 2026.

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

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

The table and map show 10 of 10 reports.

TimeWhatSize or SpeedWhereDetails
Dec 21, 2018, 4:04 AM MSTWind58 mph7 SSW BIG SKY
Record
  • Dec 21, 2018, 4:04 AM MST. Wind, 58 mph, 7 SSW BIG SKY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0889c44e38258c5f3777126de2fe3b814c7473fa057534bb2656ec62529a684b.
Dec 21, 2018, 5:15 AM MSTWind59 mph3 ENE LIVINGSTON
Record
  • Dec 21, 2018, 5:15 AM MST. Wind, 59 mph, 3 ENE LIVINGSTON. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f6fecbc29ad7fe19865bfecfa27bad2f4532d04fc46ab222bf11fc52c9aee469.
Dec 21, 2018, 7:00 AM MSTWind64 mph6 WSW BIG SKY
Record
  • Dec 21, 2018, 7:00 AM MST. Wind, 64 mph, 6 WSW BIG SKY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:db2f769439b298c5b3109b35c2facfae1c5efd7160cc89874956e27e92d80477.
Dec 21, 2018, 7:15 AM MSTWind71 mph14 W BYNUM
Record
  • Dec 21, 2018, 7:15 AM MST. Wind, 71 mph, 14 W BYNUM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:a16c31895ca0154a0515e231878cc4b0a3aa6bf77f9f3315e23dcde9916d15cc.
Dec 21, 2018, 8:00 AM MSTWind58 mph14 WSW SAINT MARY
Record
  • Dec 21, 2018, 8:00 AM MST. Wind, 58 mph, 14 WSW SAINT MARY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:47000f7a3ec002d1c0ca0760af5a2184e9c70e5e54caf4671d7966d12e40f77f.
Dec 21, 2018, 8:52 AM MSTWind63 mph7 ESE HILGER
Record
  • Dec 21, 2018, 8:52 AM MST. Wind, 63 mph, 7 ESE HILGER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0c70b5bb290f77468711840228676384bbc5be34877dd61def90347b2b9721da.
Dec 21, 2018, 10:00 AM MSTWind59 mph2 SSW BIG TIMBER
Record
  • Dec 21, 2018, 10:00 AM MST. Wind, 59 mph, 2 SSW BIG TIMBER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:34c78bba1917b8808b1a025af997adcb75614f4e77d1dd0f7e7f7c1b51671934.
Dec 21, 2018, 10:58 AM MSTWind58 mph3 NW BILLINGS
Record
  • Dec 21, 2018, 10:58 AM MST. Wind, 58 mph, 3 NW BILLINGS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:3f185d62741fe1a2ee3ab6a833d90fd85602c797230fa8435f0eafb01a26741a.
Dec 21, 2018, 1:00 PM MSTWind58 mph10 NNE BOZEMAN
Record
  • Dec 21, 2018, 1:00 PM MST. Wind, 58 mph, 10 NNE BOZEMAN. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:84bf2d434b869469bead6eb25027a6dbc0e0c7bfb23a439f0877ba82e50c442f.
Dec 21, 2018, 1:18 PM MSTWind59 mph13 S FORT BELKNAP
Record
  • Dec 21, 2018, 1:18 PM MST. Wind, 59 mph, 13 S FORT BELKNAP. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f918bb91fab44651d774b3b1ddad46fbeed82fe31ba348bb1784ba8113148250.
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.