A compact upper-level trough and strong cold front from the northern Rockies pushed dangerously gusty winds through most of northeast Montana.

High Wind in WESTERN ROOSEVELT, MONTANA
From 11-OCT-15 15:32:00 to 11-OCT-15 23:15:00 (MST-7)
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Across most of western Roosevelt County, wind speeds were not quite at warning criteria, but a peak wind gust of 63 mph was measured at the McDonalds MT-13 DOT site at 6:53 pm.

High Wind in SHERIDAN, MONTANA
From 11-OCT-15 14:01:00 to 12-OCT-15 02:05:00 (MST-7)
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The stronger sustained winds occurred generally during the afternoon and evening hours.  A peak wind gust of 71 mph was measured multiple times at the Comertown Turn-Off MT-5 DOT site from 4:39 pm to 7:03 pm.

High Wind in EASTERN ROOSEVELT, MONTANA
From 11-OCT-15 18:41:00 to 11-OCT-15 22:25:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Some strong, but short-lived gusty winds blew through eastern Roosevelt County during the morning hours, but the stronger verifying winds and gusts occurred during the evening and late night hours.  The peak wind gust of 60 mph was recorded at 8:01 pm at the US-2 @ Stateline DOT site.

High Wind in NORTHERN VALLEY, MONTANA
From 11-OCT-15 07:40:00 to 11-OCT-15 20:00:00 (MST-7)
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Winds speeds and event times are estimated from a trained spotter report.

High Wind in WIBAUX, MONTANA
From 11-OCT-15 21:47:00 to 11-OCT-15 21:50:00 (MST-7)
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Multiple periods of strong and gusty winds moved through the area, never quite sustaining at 40 mph for more than 30 minutes at a time, but a peak wind gust of 58 mph was recorded at 10:47 pm at the Beaver Hill I-94 DOT site.

High Wind in DAWSON, MONTANA
From 11-OCT-15 09:07:00 to 11-OCT-15 21:30:00 (MST-7)
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

With slightly weaker winds common across most of Dawson County, a peak wind gust of 60 mph was measured at 11:00 am at the Lindsay Divide MT-200 DOT site.

High Wind in RICHLAND, MONTANA
From 11-OCT-15 18:53:00 to 11-OCT-15 22:10:00 (MST-7)
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

With the stronger winds during the evening hours, the peak wind gust of 67 mph was recorded at 8:57 pm at the Sioux Pass MT-16 DOT site.

High Wind in GARFIELD, MONTANA
From 11-OCT-15 11:08:00 to 11-OCT-15 14:50:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Most wind speeds across Garfield County were slightly below warning criteria, but a peak wind gust of 59 mph was recorded at the South Sawmill Creek RAWS site at 12:08 pm.

High Wind in DANIELS, MONTANA
From 11-OCT-15 16:52:00 to 11-OCT-15 21:07:00 (MST-7)
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

With the stronger sustained winds during the early evening and night-time hours, a peak wind gust of 65 mph was measured both at 6:37 pm and 6:42 pm at the Navajo MT-5 DOT site.

High Wind in CENTRAL AND SOUTHERN VALLEY, MONTANA
From 11-OCT-15 16:46:00 to 11-OCT-15 18:30:00 (MST-7)
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Across central and southern Valley County, sustained winds at or above 40 mph never really materialized for more than one hour at a time.  The first verifying wind gust of 58 mph was measured at 5:46 pm at the Saco US-2 DOT site, while the peak wind gust of 62 mph was measured at 7:28 pm at the Glasgow Airport ASOS.

High Wind in CENTRAL AND SE PHILLIPS, MONTANA
From 11-OCT-15 16:46:00 to 11-OCT-15 16:50:00 (MST-7)
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Sustained winds of 40 mph or greater never materialized for more than one hour, but the peak wind gust of 58 mph was measured both at 5:46 pm and 5:48 pm at the Saco US-2 DOT site.

High Wind in LITTLE ROCKY MOUNTAINS, MONTANA
From 11-OCT-15 05:19:00 to 11-OCT-15 15:44:00 (MST-7)
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Sustained winds at or above 40 mph occurred through most of the day across southwest Phillips County.  The peak wind gust of 70 mph was measured both at 10:11 am and 10:16 am at the Malta South US-191 DOT site.