Elevated convection pulsed up associated with low to mid tropospheric warming due to southwest flow. A weak shortwave trough was working its way through a broad, larger ridge over the region.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 07:10:00 to 24-JUN-12 07:10:00 (MST-7)
Location: SIDNEY
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No damage reported, but this is a very rural area with few trees.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 07:15:00 to 24-JUN-12 07:15:00 (MST-7)
Location: FAIRVIEW
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This is a rural area with few trees.  No damage reported.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-12 05:45:00 to 24-JUN-12 05:45:00 (MST-7)
Location: WOLF PT
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree branches were blown off of trees and rain gutters were blown off of the hospital.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 10:15:00 to 24-JUN-12 10:30:00 (MST-7)
Location: LAMBERT
Magnitude: 83.00 EG
Property damage: 162.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Initial reports came from Richland County Sheriff's Department and then also from trained spotters in the area.  There were a total of 8 large steel tanks blown over that weigh 12,000-14,000 pounds each. They were empty, and not staked into the ground yet.  They stood about 25 feet tall and 8 feet across.  Consulted with expert damage assessors with NWS Warning Decision Training Branch and at the University of Oklahoma, who agreed with the NWS Glasgow wind speed estimate of 95 mph winds to blow those tanks over.  A 5th wheel camper was also blown over at the site, and an occupant was injured, but was not transported to the closest medical center.  A pickup truck was also crushed under the tanks.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 10:20:00 to 24-JUN-12 10:20:00 (MST-7)
Location: LAMBERT
Magnitude: 83.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Six power poles and lines were downed in this area.  Wind speeds estimated on other damage in the area and the EF Scale Toolkit.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 10:58:00 to 24-JUN-12 10:58:00 (MST-7)
Location: FAIRVIEW
Magnitude: 83.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Five power poles and lines were down just west of Highway 16 and Road 144. Wind speeds estimated on other damage in the area and the EF Scale Toolkit.

Hail in VALLEY, MONTANA
From 24-JUN-12 04:00:00 to 24-JUN-12 04:00:00 (MST-7)
Location: BAYLOR
Magnitude: 0.75 
Reported by: Trained Spotter

A trained spotter reported penny sized hail partially covering the ground along with heavy rain 6 miles northwest of Baylor in Valley County.

Hail in VALLEY, MONTANA
From 24-JUN-12 04:15:00 to 24-JUN-12 04:15:00 (MST-7)
Location: SAINT MARIE
Magnitude: 1.00 
Reported by: Public

Nickel to quarter sized hail along with brief heavy rain and wind gusts to 30 MPH were reported by the public near Saint Marie in Valley County.

Hail in VALLEY, MONTANA
From 24-JUN-12 05:18:00 to 24-JUN-12 05:18:00 (MST-7)
Location: LUSTRE
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported quarter and penny hail covering the ground along with heavy rain and 30 MPH wind gusts 8 miles south of Lustre in Valley County.

Hail in ROOSEVELT, MONTANA
From 24-JUN-12 05:30:00 to 24-JUN-12 05:30:00 (MST-7)
Location: VOLT
Magnitude: 0.75 
Reported by: Trained Spotter

A trained spotter reported penny sized hail along with an inch of rain 9 miles east-southeast of Volt in Roosevelt County.

Hail in RICHLAND, MONTANA
From 24-JUN-12 07:20:00 to 24-JUN-12 07:20:00 (MST-7)
Location: SIOUX PASS DOT
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported mainly pea sized hail with quarter sized hail as well 2 miles northwest of the Sioux Pass DOT in Richland County.

Hail in VALLEY, MONTANA
From 24-JUN-12 08:19:00 to 24-JUN-12 08:19:00 (MST-7)
Location: LUSTRE
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported mainly pea sized hail with some quarter sized hail 7 miles northwest of Lustre in Valley County.

Hail in RICHLAND, MONTANA
From 24-JUN-12 10:58:00 to 24-JUN-12 10:58:00 (MST-7)
Location: SIOUX PASS DOT
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported quarter sized hail covering the ground along with heavy rain about 6 miles west of the Sioux Pass DOT in Richland County.

Hail in RICHLAND, MONTANA
From 24-JUN-12 11:27:00 to 24-JUN-12 11:27:00 (MST-7)
Location: FAIRVIEW
Magnitude: 1.00 
Reported by: Trained Spotter

A trained spotter reported slightly larger than quarter sized hail near Fairview in Richland County.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-12 05:54:00 to 24-JUN-12 05:59:00 (MST-7)
Location: WOLF PT INTL AIRPORT(KOLF)
Magnitude: 63.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: ASOS

The Wolf Point Airport had a gust to 73 mph.  A nearby trailer park had a pop up camper that was flipped over by the wind and totaled.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-12 06:00:00 to 24-JUN-12 06:00:00 (MST-7)
Location: WOLF PT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Three to four inch limbs were broken off of a tree.  No other damage reported.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-12 06:25:00 to 24-JUN-12 06:25:00 (MST-7)
Location: BROCKTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No significant damage occurred.  Spotter reported 1.55 of rainfall.

Thunderstorm Wind in ROOSEVELT, MONTANA
From 24-JUN-12 06:40:00 to 24-JUN-12 06:40:00 (MST-7)
Location: BROCKTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

No significant damage noted.  Some small hail fell as well.

Hail in RICHLAND, MONTANA
From 24-JUN-12 11:11:00 to 24-JUN-12 11:11:00 (MST-7)
Location: FAIRVIEW
Magnitude: 0.88 
Reported by: Law Enforcement

Richland County Sheriff Deputy reported nickel sized hail north of highway 201 on highway 16 in Richland County.

Thunderstorm Wind in RICHLAND, MONTANA
From 24-JUN-12 11:08:00 to 24-JUN-12 11:08:00 (MST-7)
Location: SIDNEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Very strong winds reported with a lot of sand/dust lofted into the air.  No significant damage reports.

Hail in VALLEY, MONTANA
From 24-JUN-12 01:45:00 to 24-JUN-12 01:45:00 (MST-7)
Location: HINSDALE
Magnitude: 1.00 
Reported by: Public

Quarter sized hail and heavy rain was reported by the public 11 miles northwest of Hinsdale in Valley County.