A low pressure disturbance from the west combined with increasing surface moisture and a very unstable atmosphere to sustain multiple severe thunderstorms, including a linear complex of storms which eventually evolved into a bow echo.

Hail in PETROLEUM, MONTANA
From 24-JUN-16 15:33:00 to 24-JUN-16 15:33:00 (MST-7)
Location: FLATWILLOW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported quarter sized hail.

Hail in PETROLEUM, MONTANA
From 24-JUN-16 15:40:00 to 24-JUN-16 15:40:00 (MST-7)
Location: FLATWILLOW
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported half dollar hail covering the ground.

Thunderstorm Wind in GARFIELD, MONTANA
From 24-JUN-16 16:10:00 to 24-JUN-16 16:10:00 (MST-7)
Location: LUFBOROUGH HILL DOT
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Lufborough Hill MT-200 DOT site recorded a 58 mph wind gust.

Hail in GARFIELD, MONTANA
From 24-JUN-16 16:45:00 to 24-JUN-16 16:45:00 (MST-7)
Location: SAND SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Thunderstorm Wind in GARFIELD, MONTANA
From 24-JUN-16 17:05:00 to 24-JUN-16 17:05:00 (MST-7)
Location: JORDAN
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated 65 mph wind gusts which broke off some tree branches.

Hail in GARFIELD, MONTANA
From 24-JUN-16 17:05:00 to 24-JUN-16 17:05:00 (MST-7)
Location: JORDAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Thunderstorm Wind in VALLEY, MONTANA
From 24-JUN-16 17:07:00 to 24-JUN-16 17:07:00 (MST-7)
Location: KING COULEE RAWS
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

A 76 mph wind gust was recorded at the King Coulee RAWS site.

Hail in GARFIELD, MONTANA
From 24-JUN-16 17:10:00 to 24-JUN-16 17:10:00 (MST-7)
Location: COHAGEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Thunderstorm Wind in GARFIELD, MONTANA
From 24-JUN-16 17:11:00 to 24-JUN-16 17:11:00 (MST-7)
Location: JORDAN
Magnitude: 59.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Jordan airport ASOS recorded a 68 mph wind gust.

Thunderstorm Wind in GARFIELD, MONTANA
From 24-JUN-16 17:15:00 to 24-JUN-16 17:15:00 (MST-7)
Location: COHAGEN
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter estimated 70 mph wind gusts.

Hail in GARFIELD, MONTANA
From 24-JUN-16 17:15:00 to 24-JUN-16 17:15:00 (MST-7)
Location: COHAGEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported quarter sized hail.

Thunderstorm Wind in MCCONE, MONTANA
From 24-JUN-16 17:36:00 to 24-JUN-16 17:36:00 (MST-7)
Location: FT PECK LAKE HANDAR
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Fort Peck Dam handar mesonet site recorded a 66 mph wind gust.

Hail in VALLEY, MONTANA
From 24-JUN-16 17:39:00 to 24-JUN-16 17:39:00 (MST-7)
Location: NASHUA
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported penny sized hail and wind gusts up to 50 mph.

Hail in MCCONE, MONTANA
From 24-JUN-16 17:55:00 to 24-JUN-16 17:55:00 (MST-7)
Location: WELDON
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public reported nickel sized hail.

Thunderstorm Wind in VALLEY, MONTANA
From 24-JUN-16 17:44:00 to 24-JUN-16 17:44:00 (MST-7)
Location: FT PECK
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off-duty NWS employee reported 60 mph wind gusts.

Thunderstorm Wind in DAWSON, MONTANA
From 24-JUN-16 18:00:00 to 24-JUN-16 18:00:00 (MST-7)
Location: LINDSAY DIVIDE DOT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter measured 61 mph wind gusts.

Thunderstorm Wind in PRAIRIE, MONTANA
From 24-JUN-16 18:09:00 to 24-JUN-16 18:09:00 (MST-7)
Location: MC CLOUD
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter measured 62 mph wind gusts.

Thunderstorm Wind in MCCONE, MONTANA
From 24-JUN-16 18:24:00 to 24-JUN-16 18:24:00 (MST-7)
Location: CIRCLE
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 60 mph wind gusts.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 18:32:00 to 24-JUN-16 18:32:00 (MST-7)
Location: WOLF PT
Magnitude: 57.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Wolf Point airport ASOS recorded a 66 mph wind gust.

Thunderstorm Wind in DAWSON, MONTANA
From 24-JUN-16 18:54:00 to 24-JUN-16 18:54:00 (MST-7)
Location: RICHEY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Public estimated 75 mph wind gusts.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-16 18:59:00 to 24-JUN-16 18:59:00 (MST-7)
Location: ENID
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter measured 62 mph wind gusts.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 19:18:00 to 24-JUN-16 19:18:00 (MST-7)
Location: SPROLE
Magnitude: 74.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

An 85 mph wind gust was recorded at the Poplar RAWS site.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-16 19:20:00 to 24-JUN-16 19:20:00 (MST-7)
Location: SIOUX PASS DOT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 60 mph wind gusts.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 19:30:00 to 24-JUN-16 19:30:00 (MST-7)
Location: BROCKTON
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Public report, via social media, of a camper overturned and 2 teepees collapsed during a Native American pow wow outdoor celebration.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 19:46:00 to 24-JUN-16 19:46:00 (MST-7)
Location: FROID
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reported 70 mph wind gusts.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-16 20:10:00 to 24-JUN-16 20:10:00 (MST-7)
Location: SIOUX PASS DOT
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The Sioux Pass MT-16 DOT site recorded a 74 mph wind gust.

Thunderstorm Wind in SHERIDAN, MONTANA
From 24-JUN-16 20:35:00 to 24-JUN-16 20:35:00 (MST-7)
Location: MEDICINE LAKE
Magnitude: 66.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Medicine Lake RAWS site recorded a 76 mph wind gust. Time estimated.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 20:35:00 to 24-JUN-16 20:35:00 (MST-7)
Location: ND STATELINE HWY 2 DOT
Magnitude: 62.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

The US-2 at Stateline DOT site recorded a 71 mph wind gust.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 18:55:00 to 24-JUN-16 19:20:00 (MST-7)
Location: POPLAR
Magnitude: 70.00 EG
Property damage: 860.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

Roosevelt County law enforcement and numerous public reported significant damage in the town of Poplar.  Numerous trees were uprooted and many homes damaged, including some roofs blown off or damaged. A FEMA Damage Assessment Team came after this event and determined the extent of damages to private and tribal HUD homes.

Thunderstorm Wind in MCCONE, MONTANA
From 24-JUN-16 18:15:00 to 24-JUN-16 18:45:00 (MST-7)
Location: COW CREEK DOT
Magnitude: 109.00 EG
Property damage: 284.00K
Crop damage: 0.00K
Reported by: Utility Company

Follow-up information:  DOE/WAPA had 14 H-structure power poles snapped or blown over along MT highway 13. These power poles were less than 1 year old. The rural utility company had 50 single-line poles snapped or blown over along MT highway 13.  Three to five miles west of that location, another 25 power poles were snapped or blown over.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-16 19:15:00 to 24-JUN-16 19:15:00 (MST-7)
Location: POPLAR ARPT
Magnitude: 70.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An 80 mph wind gust was recorded at the Poplar airport.