Pilot Index / Montana / Dec 20, 2020

Preliminary

Storms in Montana on Dec 20, 2020

145 published severe reports across Montana on Dec 20, 2020.

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: 145. Tornado reports: 0.

The table and map show 40 of 145 reports.

TimeWhatSize or SpeedWhereDetails
Dec 20, 2020, 12:09 AM MSTWind61 mph18 SW AUGUSTA
Record
  • Dec 20, 2020, 12:09 AM MST. Wind, 61 mph, 18 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0bf31510ac7aca84e85b8a05ea34550df42d14cc1414ac3fea18c8deec411d7a.
Dec 20, 2020, 12:34 AM MSTWind74 mph14 SW AUGUSTA
Record
  • Dec 20, 2020, 12:34 AM MST. Wind, 74 mph, 14 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:45e3bbc70e12ded644d982d076ddba144873a707cb5eaad57db343fa1af4a1dc.
Dec 20, 2020, 12:59 AM MSTWind62 mph11 SSE FERGUS
Record
  • Dec 20, 2020, 12:59 AM MST. Wind, 62 mph, 11 SSE FERGUS. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:cdf259ed6a2e3b62ad918c10ce9f4317f4c7cdd1c2481f5c0208434fa031aabe.
Dec 20, 2020, 1:10 AM MSTWind65 mph2 SE BROWNING
Record
  • Dec 20, 2020, 1:10 AM MST. Wind, 65 mph, 2 SE BROWNING. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:8d550d70354a24732dad052fe5bdcfbdd436811c2b17b1b41632ea0ccd9ab1f9.
Dec 20, 2020, 1:18 AM MSTWind62 mph17 S Fort Smith
Record
  • Dec 20, 2020, 1:18 AM MST. Wind, 62 mph, 17 S Fort Smith. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:bf9de0b9aa8fadc301e787eb08f046f3f0b0c92a7514650e8309cdbcf47041b8.
Dec 20, 2020, 1:21 AM MSTWind96 mph8 SE EAST GLACIER PARK
Record
  • Dec 20, 2020, 1:21 AM MST. Wind, 96 mph, 8 SE EAST GLACIER PARK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0b70f318ec7cdeb02e7a68fb31b7a09fa7a6d026bbd55e0f41a8c74e2e2d97d8.
Dec 20, 2020, 1:39 AM MSTWind62 mph15 ESE RINGLING
Record
  • Dec 20, 2020, 1:39 AM MST. Wind, 62 mph, 15 ESE RINGLING. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0119f28a04ec740292f45599f3f454d8899fdecc819d7e46fdc3e49897676b3b.
Dec 20, 2020, 1:42 AM MSTWind64 mph6 ENE Livingston
Record
  • Dec 20, 2020, 1:42 AM MST. Wind, 64 mph, 6 ENE Livingston. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:ab56b95e4bc4d32879da921cd3152490089cff27ce716d0ae2774d09b82b08e9.
Dec 20, 2020, 2:10 AM MSTWind59 mph1 N BABB
Record
  • Dec 20, 2020, 2:10 AM MST. Wind, 59 mph, 1 N BABB. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:11bb41fb36a884d9d2ae92d58122eec972ab8e0fd55a6cffd65d2e37938a0ac3.
Dec 20, 2020, 2:11 AM MSTWind69 mphSAINT MARY
Record
  • Dec 20, 2020, 2:11 AM MST. Wind, 69 mph, SAINT MARY. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1ab6f0178ab5c6f0a15819b0e195d687532525bec9cc8bcd40f21cf4c62efb96.
Dec 20, 2020, 2:12 AM MSTWind58 mph17 NE Wilsall
Record
  • Dec 20, 2020, 2:12 AM MST. Wind, 58 mph, 17 NE Wilsall. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:81d17bf0becae88b7a1c014d23755c0cebc9fc63920bd9dab0b976f7c98ff2bc.
Dec 20, 2020, 2:22 AM MSTWind76 mph1 ENE EAST GLACIER PARK
Record
  • Dec 20, 2020, 2:22 AM MST. Wind, 76 mph, 1 ENE EAST GLACIER PARK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:94a951f77d44fecb419a65e235732e61d756999fd5af10f6b69a2e09b11ad22d.
Dec 20, 2020, 2:53 AM MSTWind72 mph6 ENE Livingston
Record
  • Dec 20, 2020, 2:53 AM MST. Wind, 72 mph, 6 ENE Livingston. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:5a479d236f40b11c77a3d184359292eec45819c53e7119c53b01d0fb8af5705f.
Dec 20, 2020, 3:09 AM MSTWind64 mph16 WSW BYNUM
Record
  • Dec 20, 2020, 3:09 AM MST. Wind, 64 mph, 16 WSW BYNUM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:edac9b3a7802a0d5deaab8387a27efba69d9c5798ca89eb2018f0706bd704060.
Dec 20, 2020, 3:12 AM MSTWind69 mph17 NE Wilsall
Record
  • Dec 20, 2020, 3:12 AM MST. Wind, 69 mph, 17 NE Wilsall. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:20c71af396ef542c2f5f27f44d77d121f4960d3f3a4a271b25a35ed4df6ae3fb.
Dec 20, 2020, 3:19 AM MSTWind62 mph7 SW AUGUSTA
Record
  • Dec 20, 2020, 3:19 AM MST. Wind, 62 mph, 7 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0d1edc3bc4e9c9741c18c643c93a202fb31e782a144834ee8134b6339d802b08.
Dec 20, 2020, 3:19 AM MSTWind62 mph7 SW AUGUSTA
Record
  • Dec 20, 2020, 3:19 AM MST. Wind, 62 mph, 7 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:7c4572fe743a7380580a35dc3d45d4f996094761a1c48b887b7a0066d46b3b1a.
Dec 20, 2020, 3:19 AM MSTWind59 mph3 ENE Livingston
Record
  • Dec 20, 2020, 3:19 AM MST. Wind, 59 mph, 3 ENE Livingston. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:fc8ac538032f24cb81ffd4d7eb965e1fa9b4295d20f6bb59f875f169ce7f6048.
Dec 20, 2020, 3:24 AM MSTWind63 mph2 SW AUGUSTA
Record
  • Dec 20, 2020, 3:24 AM MST. Wind, 63 mph, 2 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:0d3b1b2a3974cf292e6bedb422ff5d997e8762fd0d65a9970c77e873273fdf3b.
Dec 20, 2020, 3:39 AM MSTWind72 mph2 SE BROWNING
Record
  • Dec 20, 2020, 3:39 AM MST. Wind, 72 mph, 2 SE BROWNING. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c052e8b7d0b8e7595b0f52fd796d7ae3f80e6b3cd2677726acccd9e483deca9a.
Dec 20, 2020, 3:44 AM MSTWind60 mph8 WNW WOLF CREEK
Record
  • Dec 20, 2020, 3:44 AM MST. Wind, 60 mph, 8 WNW WOLF CREEK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e076126a09326f85ba00f098badc74424b1fda7d74f83921f6feb418935c213c.
Dec 20, 2020, 3:52 AM MSTWind60 mph7 ESE HILGER
Record
  • Dec 20, 2020, 3:52 AM MST. Wind, 60 mph, 7 ESE HILGER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:fb93edeccb0670e923c72705922235300322d4c7e4a5e9aab6e77d7762ac4a26.
Dec 20, 2020, 4:14 AM MSTWind63 mph2 SW AUGUSTA
Record
  • Dec 20, 2020, 4:14 AM MST. Wind, 63 mph, 2 SW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:418e2be23daceb8adf6b97fe55d3c4a781c6a3eb9c4e3af91393a7f14243e5cb.
Dec 20, 2020, 4:14 AM MSTWind60 mph7 NNW AUGUSTA
Record
  • Dec 20, 2020, 4:14 AM MST. Wind, 60 mph, 7 NNW AUGUSTA. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:900f3ac728b06cc3b6861435e3977dd90fc74a714df85d0790af178a433a6748.
Dec 20, 2020, 4:18 AM MSTWind64 mph17 S Fort Smith
Record
  • Dec 20, 2020, 4:18 AM MST. Wind, 64 mph, 17 S Fort Smith. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:537b4634d12592b3a45835e8f814b5d7d59037090d8e0adbe7bc6d8841b97a2b.
Dec 20, 2020, 4:19 AM MSTWind63 mphCHOTEAU
Record
  • Dec 20, 2020, 4:19 AM MST. Wind, 63 mph, CHOTEAU. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:c32f48b270147a3d0e5923f69cf17253cd9fcf8ab35f0907604325cdbb2ed28b.
Dec 20, 2020, 4:21 AM MSTWind58 mphBROWNING
Record
  • Dec 20, 2020, 4:21 AM MST. Wind, 58 mph, BROWNING. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:77df6cf77470249d48994803b53d6c6ca7fa2a15d212ad47e543f9fe3a886e3e.
Dec 20, 2020, 4:38 AM MSTWind71 mph14 W BYNUM
Record
  • Dec 20, 2020, 4:38 AM MST. Wind, 71 mph, 14 W BYNUM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:268569dab3e42d0fddbbef0d5fe8d6e3081ff22496eeb23be2287b368211980e.
Dec 20, 2020, 4:39 AM MSTWind68 mph6 SSE MARYSVILLE
Record
  • Dec 20, 2020, 4:39 AM MST. Wind, 68 mph, 6 SSE MARYSVILLE. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:83e812cd5c26ac07deafe0ffba2e582c0b37c48b58b435357476f06e5ab08d44.
Dec 20, 2020, 4:48 AM MSTWind64 mph4 SSE BYNUM
Record
  • Dec 20, 2020, 4:48 AM MST. Wind, 64 mph, 4 SSE BYNUM. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:cd34ab51fc8203dd1d7465065c450ffa3eeb77e551f7affed7a5966c4b06fa37.
Dec 20, 2020, 4:55 AM MSTWind59 mph1 NNE CHOTEAU
Record
  • Dec 20, 2020, 4:55 AM MST. Wind, 59 mph, 1 NNE CHOTEAU. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:4af5b92d27dd8d5834a8162bee495747e6110a800073e15f9add158732055462.
Dec 20, 2020, 4:56 AM MSTWind63 mph3 SW CUT BANK
Record
  • Dec 20, 2020, 4:56 AM MST. Wind, 63 mph, 3 SW CUT BANK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:42c13f9be8a4409d92f3c5673474b2356e5b03945059afc8fc0c51837674f080.
Dec 20, 2020, 5:02 AM MSTWind62 mph10 S CUT BANK
Record
  • Dec 20, 2020, 5:02 AM MST. Wind, 62 mph, 10 S CUT BANK. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:f704328a56d9ffdd6f89ee96d70e5818abb1609c6da44daefe7b056f6e9c60b1.
Dec 20, 2020, 5:08 AM MSTWind62 mph2 SSE GEYSER
Record
  • Dec 20, 2020, 5:08 AM MST. Wind, 62 mph, 2 SSE GEYSER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:20ed3a0a65a45ac9548cb2da518d13b7ce9dd8fb770547f8910af832960e02d5.
Dec 20, 2020, 5:09 AM MSTWind58 mph3 ENE Livingston
Record
  • Dec 20, 2020, 5:09 AM MST. Wind, 58 mph, 3 ENE Livingston. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:543e0070e84aa57057ad1a188c26a9d906b8f11cf5edaa74a530d13c9afceed9.
Dec 20, 2020, 5:09 AM MSTWind60 mph3 NNE SUN RIVER
Record
  • Dec 20, 2020, 5:09 AM MST. Wind, 60 mph, 3 NNE SUN RIVER. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:fb10ac86d32f76f2cb5c989f339bdea85bfc53e68eb13c6e6416a9cb7b386f53.
Dec 20, 2020, 5:19 AM MSTWind58 mph3 WSW Nye
Record
  • Dec 20, 2020, 5:19 AM MST. Wind, 58 mph, 3 WSW Nye. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:e437304b41e2ac05a0c1adc590ffeafdffae5350b6db7486ee227619b42268de.
Dec 20, 2020, 5:30 AM MSTWind61 mphSUNBURST
Record
  • Dec 20, 2020, 5:30 AM MST. Wind, 61 mph, SUNBURST. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:d0fae6977a49b8d0d76330ce9d2cdd4335eb4c91bf826e8b310434bee07dba9a.
Dec 20, 2020, 5:45 AM MSTWind63 mph20 N RUDYARD
Record
  • Dec 20, 2020, 5:45 AM MST. Wind, 63 mph, 20 N RUDYARD. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:df1cceaeab93f75d7f745e32475a582da68932814366f0491c301893befdd1fa.
Dec 20, 2020, 6:12 AM MSTWind72 mph17 NE Wilsall
Record
  • Dec 20, 2020, 6:12 AM MST. Wind, 72 mph, 17 NE Wilsall. Source: NWS Local Storm Reports. Status: Preliminary. Record id: lsr:1daa9016b30c57cdc8a8c44ae2abbd6963b1efe1565bbd9f5026f3bc05384e1e.
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.