Damaging Winds and High Wind in Montana, May 13 to 14, 2026

Name: Damaging Winds and High Wind in Montana, May 13 to 14, 2026
Start: 2026-05-13T14:45
End: 2026-05-14T12:15
Location: Montana

May 13 to 14, 2026 · NWS BYZ · 38 events in 19 counties and zones

A shortwave brought about windy thunderstorms across much of southern MT. In it's wake, a cold front crossed the area, and strong winds behind the front persisted well into the 14th.

Where it happened

Every event with a place to put it; 13 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 38

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS BYZ wrote it up.

A shortwave brought about windy thunderstorms across much of southern MT. In it's wake, a cold front crossed the area, and strong winds behind the front persisted well into the 14th. Non-convective gusts up to 80 mph were observed, with convective gusts up to 80 mph observed.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Billings, MT wrote its last area forecast discussion before the first event at May 13, 11:51 AM MST, 2 hours 54 minutes earlier. Its key messages:

Isolated high-based thunderstorms late this afternoon/evening could produce strong/erratic wind gusts.
Pacific frontal passage will bring strong west winds tonight through Thursday; 60+ mph gusts likely along the US-191 corridor from Big Timber to Judith Gap, and 40+ mph gusts across the region. Windy and dry conditions could cause rapid fire spread.
Dry and still breezy Friday.
Trending cooler with an increasing chance of precipitation (including mountain snow) this weekend.

Area forecast discussion, May 13, 11:51 AM MST, 2 hours 54 minutes before

Area Forecast Discussion
National Weather Service Billings MT
1251 PM MDT Wed May 13 2026

.KEY MESSAGES...

- Isolated high-based thunderstorms late this afternoon/evening
  could produce strong/erratic wind gusts.

- Pacific frontal passage will bring strong west winds tonight
  through Thursday; 60+ mph gusts likely along the US-191 corridor
  from Big Timber to Judith Gap, and 40+ mph gusts across the
  region. Windy and dry conditions could cause rapid fire spread.

- Dry and still breezy Friday.

- Trending cooler with an increasing chance of precipitation
  (including mountain snow) this weekend.

&&

.DISCUSSION...

Through next Wednesday...

Satellite imagery shows an approaching Pacific trof over WA/OR and
a downstream ridge axis over eastern MT, and heights are beginning
to fall over our forecast area. A surface cold front is located
from far western MT to southwest ID as of 17z, and mesoanalysis
shows a region of healthy pressure falls from near Butte to
Salmon. As a result, we are seeing easterly winds and not quite
ready to mix the SW flow aloft. Weak convection has developed in
central ID but our west is still capped. Overall, we are still a
few hours from seeing the risk of t-storms reach us. Expect that
to be ~21z. SPC has expanded the slight risk for severe t-storms
to include areas from Red Lodge to Lavina westward, and a marginal
risk extends eastward to Miles City & Broadus. This morning's
HREF shows best probs for convective high winds from Billings
westward and northward, as far east as northern Rosebud.
Obviously, the risk of strong/erratic winds will exist with any
weak t-storm or shower, as the boundary layer will be deeply mixed
and dry. No chance of anything but tiny hail today.

Following the convective wind potential (there may be multiple
rounds until the front arrives from the west this evening) we
transition to synoptically-driven/strong/post-frontal west winds.
Subsidence arrives in our far west by 06z and is over most of our
cwa by 12z. Confidence is high for windy conditions across the
area through tomorrow, but there remains uncertainty with
magnitude of highest gusts. GFS continues to be strongest with mid
level winds and the EC weaker, and historically some sort of
blend of the two verifies best. The 12z GFS has actually trended a
bit weaker so there is some confidence there. Existing wind
highlights look good and will make no changes, and will also make
no further additions in coverage. With the greatest 850-700mb
winds occurring before 18z tomorrow, do not see a need to expand
east of Yellowstone/Musselshell as there shouldn't be enough mixed
wind during peak heating hours, but this will need to be
monitored. The immediate wind risk is with convection between
21-04z. Heads up if you have outdoor plans this evening.

Regarding fire weather, much of the region has greened up
sufficiently to prevent a significant risk of grass fires, but
there are patches that are drier, and larger fuels are reporting
below normal fuel moistures. Please take care to not spark a fire
with the dry and windy conditions through tomorrow! In fact, it
will remain breezy (though not as strong and a bit cooler)
Friday. T-storms this evening will produce only spotty light
rainfall.

Look for temps in the mid 60s to mid 70s tomorrow through
Saturday, with much less wind and higher humidities by the
weekend.

Things get more interesting this weekend as a stronger trof w/
much lower heights drops through the northern Rockies. This will
bring cooler temps and increasing precip chances, with high
confidence, but details remain highly uncertain. An open trof will
mean lower precip totals while a closed low developing over WY
would result in heavier upslope precipitation. Either way, temps
aloft will be cold enough such that mountains will see snowfall.
If a more dynamic system materializes we could also be looking at
wet snow for the foothills. Look for temps somewhere between the
mid 40s and near 60F Sunday & Monday (warmest east). Consensus is
for temps back to the 60s Tuesday & Wednesday, but there is
potential for another trof to arrive by then. Generally speaking,
the weather pattern is looking active and cooler through the first
half of next week.

An interesting side note. When the Billings airport reaches 90F
today, it will have seen 50F in Jan, 60F in Feb, 70F in Mar, 80F
in Apr and 90F in May. While these temps are not uncommon in any
of these months, it occurring in all 5 months has happened only 4
other times since 1934, most recently in 1992.

JKL

.AVIATION...

18z Discussion...

Winds will pick up over the next few hours with a primarily
southerly direction. The strongest gusts are forecast near KLVM.
KBIL will see SW winds with gusts up to 30kts possible. Starting
at 22z TSRA will move eastwards across the region starting at
KLVM. The greatest risk time for KBIL will be between 23z and
05z. Winds with these storms will be erratic with gusts up to
50kts possible. Overnight tonight (after 06z) winds will calm down
slightly and turn westerly. LLWS is likely across all of the
forecast area through 15z. Winds pick up starting around 12z out
of the west. Widespread gusts to 40kts are possible with higher
gusts for KLVM/K6S0/K3HT where 60kt gusts are not out of the
question. KBIL could see westerly wind gusts as high as 50kts
after 15z. WMR

&&

.PRELIMINARY POINT TEMP/POPS...

    Thu     Fri     Sat     Sun     Mon     Tue     Wed
-----------------------------------------------------------
BIL 052/075 047/072 041/071 041/050 036/051 035/063 042/064
    20/N    00/N    00/B    55/W    54/W    21/B    23/T
LVM 042/070 040/068 036/065 032/042 028/047 029/058 035/062
    50/N    00/N    03/T    88/T    75/T    22/T    23/T
HDN 052/075 045/073 038/073 041/053 035/051 033/063 039/064
    20/N    00/N    00/B    35/W    65/W    21/B    23/T
MLS 052/074 046/072 039/073 044/057 036/050 034/061 040/064
    50/N    00/N    00/B    44/W    55/W    31/B    22/W
4BQ 052/073 042/072 038/074 045/056 036/047 033/059 039/062
    40/N    00/U    00/B    33/W    66/W    21/B    12/W
BHK 050/073 043/071 036/072 043/058 034/046 031/058 037/062
    20/N    00/N    00/B    45/W    66/W    32/W    12/W
SHR 045/075 039/072 035/072 037/049 030/045 028/058 034/061
    20/N    00/U    00/B    38/T    87/T    22/T    13/T

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...High Wind Warning in effect from 6 PM this evening to 9 PM
      MDT Thursday FOR ZONES 29-34-42-63-141-172-228-235.
     Severe Thunderstorm Watch 199 in effect until 9 PM MDT this
      evening FOR ZONES 34-40-42-63>68-141-172-228.
     High Wind Warning in effect until 10 PM MDT this evening FOR
      ZONE 64.
     Wind Advisory in effect from 6 PM this evening to 9 PM MDT
      Thursday FOR ZONES 65-66.
     High Wind Warning in effect from midnight tonight to 6 PM MDT
      Thursday FOR ZONE 68.
WY...None.

&&

weather.gov/billings

In the hours before

Local storm report, May 13, 1:10 PM MST, 1 hour 35 minutes before

Preliminary Local Storm Report
National Weather Service Billings MT
210 PM MDT Wed May 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0142 PM     Non-Tstm Wnd Gst 7 ENE Livingston        45.70N 110.43W
05/13/2026  M55 MPH          Park               MT   ASOS

            ASOS station KLVM Livingston.

0200 PM     Non-Tstm Wnd Gst 1 SSE Livingston        45.64N 110.55W
05/13/2026  M55 MPH          Park               MT   Mesonet

            Mesonet station MTLRH Livingston River Hill.

0200 PM     Non-Tstm Wnd Gst Pine Creek              45.50N 110.57W
05/13/2026  M55 MPH          Park               MT   Mesonet

            Mesonet station DW8455 Livingston.

&&

Local storm report, May 13, 1:27 PM MST, 1 hour 18 minutes before

Preliminary Local Storm Report
National Weather Service Billings MT
227 PM MDT Wed May 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0215 PM     Non-Tstm Wnd Gst 1 SSE Livingston        45.64N 110.55W
05/13/2026  M56 MPH          Park               MT   Mesonet

            Mesonet station MTLRH Livingston River Hill.

&&

Special weather statement, May 13, 1:56 PM MST, 49 minutes before

Special Weather Statement
National Weather Service Billings MT
256 PM MDT Wed May 13 2026

MTZ064-067-132130-
Paradise Valley MT-Absaroka/Beartooth Mountains MT-
256 PM MDT Wed May 13 2026

...STRONG WINDS WILL IMPACT SOUTHWESTERN PARK COUNTY UNTIL 330 PM
MDT...

At 256 PM MDT, Doppler radar was tracking showers producing gusty to
strong winds 13 miles southwest of Gardiner, moving northeast at 55
mph.

HAZARD...Wind gusts of 45 to 55 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
  Gardiner, Chico Hot Springs, Chico, Corwin Springs, Emigrant and
  Jardine.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 4551 11092 4536 11045 4503 11047 4503 11069
      4504 11074 4507 11076 4506 11082 4504 11084
      4503 11091 4506 11094 4508 11095 4510 11099
      4510 11101 4508 11103 4508 11105 4535 11104
      4535 11092
TIME...MOT...LOC 2050Z 219DEG 48KT 4494 11094

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 TO 55 MPH

Arends

Local storm report, May 13, 1:57 PM MST, 48 minutes before

Preliminary Local Storm Report
National Weather Service Billings MT
257 PM MDT Wed May 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0240 PM     Non-Tstm Wnd Gst 7 ENE Livingston        45.70N 110.43W
05/13/2026  M58 MPH          Park               MT   ASOS

            ASOS station KLVM Livingston.

&&

Local storm report, May 13, 2:04 PM MST, 41 minutes before

Preliminary Local Storm Report
National Weather Service Billings MT
304 PM MDT Wed May 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0145 PM     Tstm Wnd Gst     2 S Pray                45.35N 110.68W
05/13/2026  M53 MPH          Park               MT   Mesonet

            Mesonet station MTM86 Emigrant E.

&&

Local storm report, May 13, 2:29 PM MST, 16 minutes before

Preliminary Local Storm Report
National Weather Service Billings MT
329 PM MDT Wed May 13 2026

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0318 PM     Non-Tstm Wnd Gst 18 S Fort Smith         45.07N 107.89W
05/13/2026  M57 MPH          Big Horn           MT   Mesonet

            Mesonet station BHMM8 Bighorn Mountain.

&&

The radar

The Billings radar (KBLX), 153 km away, was scanning. The volume nearest the first event began at 21:43 UTC.

Open the radar archive at this moment

Event by event

25 thunderstorm wind, 13 high wind. Local standard time, as filed.

Thunderstorm Wind, Park

When: May 13, 2:45 PM MST
Where: Park County, 2.29 mi SSE of Livingston
Measured: 66 kt (76 mph) measured gust
Reported by: Mesonet
Coordinates: 45.640, -110.550

Mesonet station MTLRH Livingston River Hill gusted to 76 mph.

Thunderstorm Wind, Park

When: May 13, 2:45 PM MST
Where: Park County, 2.07 mi S of Mission
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 45.690, -110.500

Mesonet station MTELV 3.3 E Livingston reported gust to 69 mph.

High Wind, Paradise Valley

When: May 13, 2:45 PM MST to 8:00 PM MST
Where: Paradise Valley forecast zone
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 45.488, -110.526 (the zone’s center; the record gives no point)

Emigrant E gusted to 62 mph.

Thunderstorm Wind, Park

When: May 13, 2:53 PM MST
Where: Park County, 0.97 mi E of Livingstn Mission Fl
Measured: 60 kt (69 mph) measured gust
Reported by: ASOS
Coordinates: 45.700, -110.430

ASOS station KLVM Livingston gusted to 69 mph.

Thunderstorm Wind, Park

When: May 13, 3:00 PM MST
Where: Park County, 2.29 mi SSE of Livingston
Measured: 68 kt (78 mph) measured gust
Reported by: Mesonet
Coordinates: 45.640, -110.550

Mesonet station MTLRH Livingston River Hill gusted to 78 mph.

Thunderstorm Wind, Park

When: May 13, 3:00 PM MST
Where: Park County, 1.19 mi SW of Springdale
Measured: 64 kt (74 mph) measured gust
Reported by: Mesonet
Coordinates: 45.720, -110.250

Mesonet station MTSPD Springdale I-90 Mp 352.3 gusted to 74 mph.

Thunderstorm Wind, Sweet Grass

When: May 13, 3:15 PM MST
Where: Sweet Grass County, 0.48 mi E of Big Timber Arpt
Measured: 58 kt (67 mph) measured gust
Reported by: AWOS
Coordinates: 45.800, -109.970

AWOS station K6S0 Big Timber gusted to 67 mph.

Thunderstorm Wind, Sweet Grass

When: May 13, 3:31 PM MST
Where: Sweet Grass County, 2.52 mi NE of Melville
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 46.130, -109.920

Mesonet station MTHLS Harlowton South Us-191 Mp 22.0 gusted to 62 mph.

Thunderstorm Wind, Sweet Grass

When: May 13, 3:35 PM MST
Where: Sweet Grass County, 13.16 mi ESE of Mc Leod
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 45.580, -109.880

Mesonet station DBYM8 Derby Mountain gusted to 58 mph.

Thunderstorm Wind, Big Horn

When: May 13, 3:50 PM MST
Where: Big Horn County, 8.29 mi W of Lodge Grass
Measured: 70 kt (81 mph) measured gust
Reported by: Mesonet
Coordinates: 45.310, -107.520

Lodge Grass W mesonet gusted to 80 mph.

Thunderstorm Wind, Golden Valley

When: May 13, 4:05 PM MST
Where: Golden Valley County, 6.91 mi N of Lavina Arpt
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 46.400, -108.950

Lavina N mesonet gusted to 62 mph.

Thunderstorm Wind, Park

When: May 13, 4:40 PM MST
Where: Park County, Pine Creek
Measured: 50 kt (58 mph) measured gust
Reported by: Mesonet
Coordinates: 45.500, -110.570

Mesonet station DW8455 Livingston gusted to 58 mph.

Thunderstorm Wind, Big Horn

When: May 13, 4:45 PM MST
Where: Big Horn County, 15.39 mi N of Kirby
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 45.520, -106.930

Busby S mesonet gusted to 65 mph.

Thunderstorm Wind, Park

When: May 13, 4:53 PM MST
Where: Park County, 0.97 mi E of Livingstn Mission Fl
Measured: 74 kt (85 mph) measured gust
Reported by: ASOS
Coordinates: 45.700, -110.430

ASOS station KLVM Livingston gusted to 85 mph.

Thunderstorm Wind, Big Horn

When: May 13, 4:55 PM MST
Where: Big Horn County, 3.21 mi WNW of Hardin
Measured: 51 kt (59 mph) measured gust
Reported by: AWOS
Coordinates: 45.750, -107.660

AWOS station koou 2 WNW Hardin gusted to 59 mph.

Thunderstorm Wind, Park

When: May 13, 5:00 PM MST
Where: Park County, 2.07 mi S of Mission
Measured: 63 kt (72 mph) measured gust
Reported by: Mesonet
Coordinates: 45.690, -110.500

Mesonet station MTELV 3.3 E Livingston gusted to 72 mph.

Thunderstorm Wind, Park

When: May 13, 5:00 PM MST
Where: Park County, 2.29 mi SSE of Livingston
Measured: 82 kt (94 mph) measured gust
Reported by: Mesonet
Coordinates: 45.640, -110.550

Mesonet station MTLRH Livingston River Hill gusted to 94 mph.

Thunderstorm Wind, Park

When: May 13, 5:15 PM MST
Where: Park County, 1.19 mi SW of Springdale
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 45.720, -110.250

Mesonet station MTSPD Springdale I-90 Mp 352.3 gusted to 64 mph.

Thunderstorm Wind, Stillwater

When: May 13, 6:00 PM MST
Where: Stillwater County, 8.49 mi ESE of Absarokee
Measured: 52 kt (60 mph) measured gust
Reported by: Mesonet
Coordinates: 45.470, -109.260

Cooney Reservoir NW mesonet gusted to 60 mph.

Thunderstorm Wind, Sweet Grass

When: May 13, 6:15 PM MST
Where: Sweet Grass County, 3.59 mi SSE of Big Timber Arpt
Measured: 60 kt (69 mph) measured gust
Reported by: Mesonet
Coordinates: 45.750, -109.960

Mesonet station AU397 Big Timber gusted to 69 mph.

Thunderstorm Wind, Stillwater

When: May 13, 6:22 PM MST
Where: Stillwater County, 3.46 mi WNW of Fishtail
Measured: 54 kt (62 mph) measured gust
Reported by: Mesonet
Coordinates: 45.460, -109.570

Mesonet station FSLM8 Fishtail gusted to 62 mph.

Thunderstorm Wind, Yellowstone

When: May 13, 6:35 PM MST
Where: Yellowstone County, 0.48 mi W of Laurel Muni Arpt
Measured: 50 kt (58 mph) measured gust
Reported by: AWOS
Coordinates: 45.700, -108.760

AWOS station k6s8 2 NNE Laurel gusted to 58 mph.

High Wind, Southwestern Yellowstone

When: May 13, 6:35 PM MST to May 14, 10:00 AM MST
Where: Southwestern Yellowstone forecast zone
Measured: 57 kt (66 mph) measured gust
Reported by: AWOS
Coordinates: 45.937, -108.274 (the zone’s center; the record gives no point)

Laurel K6S8 gusted to 66 mph. Kbil gusted to 61 mph.

Thunderstorm Wind, Yellowstone

When: May 13, 6:53 PM MST
Where: Yellowstone County, 0.96 mi W of Billings Logan Arpt
Measured: 53 kt (61 mph) measured gust
Reported by: ASOS
Coordinates: 45.800, -108.550

ASOS station kbil Billings gusted to 61 mph.

Thunderstorm Wind, Park

When: May 13, 7:12 PM MST
Where: Park County, 15.66 mi ENE of Wilsall Arpt
Measured: 51 kt (59 mph) measured gust
Reported by: Mesonet
Coordinates: 46.160, -110.380

Mesonet station TT453 Crazy gusted to 59 mph.

Thunderstorm Wind, Carbon

When: May 13, 7:29 PM MST
Where: Carbon County, 0.49 mi E of Hillsboro
Measured: 61 kt (70 mph) measured gust
Reported by: RAWS
Coordinates: 45.100, -108.220

Hillsboro RAWS gusted to 70 mph.

High Wind, Northern Sweet Grass

When: May 13, 7:55 PM MST to May 14, 12:00 PM MST
Where: Northern Sweet Grass forecast zone
Measured: 62 kt (71 mph) measured gust
Reported by: AWOS
Coordinates: 45.814, -109.941 (the zone’s center; the record gives no point)

Big Timber K6S0 gusted to 71 mph.

High Wind, Southern Wheatland

When: May 13, 8:00 PM MST to May 14, 9:00 AM MST
Where: Southern Wheatland forecast zone
Measured: 57 kt (66 mph) measured gust
Reported by: AWOS
Coordinates: 46.466, -109.844 (the zone’s center; the record gives no point)

Kilo gusted to 66 mph.

High Wind, Red Lodge Foothills

When: May 13, 8:20 PM MST
Where: Red Lodge Foothills forecast zone
Measured: 52 kt (60 mph) measured gust
Reported by: Public
Coordinates: 45.227, -109.028 (the zone’s center; the record gives no point)

Black Butte gusted to 60 mph.

High Wind, Northern Stillwater

When: May 13, 8:30 PM MST to May 14, 10:30 AM MST
Where: Northern Stillwater forecast zone
Measured: 57 kt (66 mph) measured gust
Reported by: Mesonet
Coordinates: 45.669, -109.395 (the zone’s center; the record gives no point)

Busteed and Reed Point NE gusted to 66 mph.

Thunderstorm Wind, Yellowstone

When: May 13, 9:30 PM MST
Where: Yellowstone County, 0.69 mi S of Ballantine
Measured: 53 kt (61 mph) measured gust
Reported by: Mesonet
Coordinates: 45.940, -108.150

Mesonet station MTBAL Ballantine I-94 Mp 15.0 gusted to 61 mph.

High Wind, Treasure

When: May 13, 10:15 PM MST
Where: Treasure forecast zone
Measured: 51 kt (59 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.212, -107.272 (the zone’s center; the record gives no point)

Hysham Hills DOT gusted to 59 mph.

High Wind, Musselshell

When: May 13, 11:00 PM MST to May 14, 10:30 AM MST
Where: Musselshell forecast zone
Measured: 53 kt (61 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.497, -108.398 (the zone’s center; the record gives no point)

Bull Mountain DOT gusted to 61 mph. Roundup BLM gusted to 59 mph.

High Wind, Northern Rosebud

When: May 13, 11:15 PM MST
Where: Northern Rosebud forecast zone
Measured: 50 kt (58 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.230, -106.731 (the zone’s center; the record gives no point)

Sweeney Creek DOT gusted to 58 mph.

High Wind, Custer

When: May 13, 11:42 PM MST
Where: Custer forecast zone
Measured: 50 kt (58 mph) measured gust
Reported by: ASOS
Coordinates: 46.253, -105.572 (the zone’s center; the record gives no point)

KMLS gusted to 58 mph.

High Wind, Melville Foothills

When: May 14, 12:30 AM MST to 8:00 AM MST
Where: Melville Foothills forecast zone
Measured: 63 kt (72 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.140, -109.892 (the zone’s center; the record gives no point)

Harlowton S DOT gusted to 72 mph.

High Wind, Judith Gap

When: May 14, 4:50 AM MST to 11:00 AM MST
Where: Judith Gap forecast zone
Measured: 53 kt (61 mph) measured gust
Reported by: Department of Highways
Coordinates: 46.424, -109.509 (the zone’s center; the record gives no point)

Judith Gap DOT gusted to 61 mph.

High Wind, Golden Valley

When: May 14, 8:50 AM MST to 12:15 PM MST
Where: Golden Valley forecast zone
Measured: 56 kt (64 mph) measured gust
Reported by: Mesonet
Coordinates: 46.381, -109.175 (the zone’s center; the record gives no point)

Rothiemay gusted to 64 mph.

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
High Wind: Sustained non-thunderstorm winds of 40 mph or more for an hour, or gusts of 58 mph or more.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Montana in 2026 Every state in 2026 This day in weather history Warnings in Montana, May 2026

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 1344395, 1344397, 1344453, 1344399, 1344401, 1344402, 1344403, 1344404, 1344407, 1344417, 1344416, 1344408, 1344415, 1344410, 1344411, 1344420, 1344430, 1344421, 1344434, 1344424, 1344425, 1344427, 1344464, 1344426, 1344428, 1344435, 1344458, 1344456, 1344461, 1344460, 1344432, 1344467, 1344463, 1344465, 1344468, 1344457, 1344455, 1344459.