A strong upper-level disturbance and a very moist surface layer combined to produce numerous severe thunderstorms from the lee side of the northern Rockies through the northern high plains.

Thunderstorm Wind in GARFIELD, MONTANA
From 19-JUN-13 21:08:00 to 19-JUN-13 21:08:00 (MST-7)
Location: SOUTH SAWMILL RAWS
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The South Sawmill Creek RAWS site recorded a 59 mph wind gust.

Hail in PETROLEUM, MONTANA
From 19-JUN-13 19:55:00 to 19-JUN-13 19:55:00 (MST-7)
Location: WINNETT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter-sized hail and estimated wind gusts up to 60 mph.

Thunderstorm Wind in PHILLIPS, MONTANA
From 19-JUN-13 22:15:00 to 19-JUN-13 22:15:00 (MST-7)
Location: SACO
Magnitude: 50.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public estimated wind gusts between 65 and 70 mph and reported a roof blown off of a shed and thrown about 75 yards into a field northeast of the shed location. The shed was open-faced towards the south and side walls were left standing.

Thunderstorm Wind in VALLEY, MONTANA
From 19-JUN-13 22:45:00 to 19-JUN-13 22:45:00 (MST-7)
Location: GLASGOW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Valley County dispatch reported a couple of large trees blown over and large limbs broken off other trees.

Thunderstorm Wind in MCCONE, MONTANA
From 19-JUN-13 23:40:00 to 19-JUN-13 23:40:00 (MST-7)
Location: CIRCLE
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported a 6 to 8 inch diameter tree branch was broken off a large tree in the town of circle.

Thunderstorm Wind in PHILLIPS, MONTANA
From 19-JUN-13 20:15:00 to 19-JUN-13 20:15:00 (MST-7)
Location: MANNING CORRAL RAWS
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Manning Corral Dogtown RAWS site recorded a 58 mph wind gust.

Thunderstorm Wind in PHILLIPS, MONTANA
From 19-JUN-13 20:30:00 to 19-JUN-13 20:30:00 (MST-7)
Location: MALTA SOUTH DOT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Malta South US-191 DOT site recorded a 66 mph wind gust.

Thunderstorm Wind in VALLEY, MONTANA
From 19-JUN-13 22:45:00 to 19-JUN-13 22:45:00 (MST-7)
Location: BLUFF CREEK RAWS
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Bluff Creek RAWS site recorded a 61 mph wind gust.

Thunderstorm Wind in MCCONE, MONTANA
From 20-JUN-13 00:00:00 to 20-JUN-13 00:00:00 (MST-7)
Location: COW CREEK DOT
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Cow Creek DOT site recorded a 59 mph wind gust.

Thunderstorm Wind in SHERIDAN, MONTANA
From 20-JUN-13 02:27:00 to 20-JUN-13 02:27:00 (MST-7)
Location: COMERTOWN DOT
Magnitude: 75.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Comertown Turn-Off MT-5 DOT site recorded an 86 mph wind gust.

Thunderstorm Wind in VALLEY, MONTANA
From 19-JUN-13 22:30:00 to 19-JUN-13 22:30:00 (MST-7)
Location: GLASGOW INTL AIRPORT (KGGW)
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

NWS employee located 2.2 miles NNW of Glasgow reported wind gusts up to 70 mph.