During the early to mid evening hours of Wednesday, June 30th, Severe Thunderstorm Watch number 434 was issued for southwest and west central North Dakota. Strong to severe storms over southeast Montana were expected to advect into North Dakota. These thunderstorms were associated with a weak mid level wave lifting northeast into the Northern Plains. The watch was later expanding to include north central North Dakota as a nocturnal low level jet developed and intensified across the Dakotas, helping to sustain severe convection into the early morning hours of Thursday, July 1st.
Multiple severe thunderstorm warnings were issued. Numerous reports of severe thunderstorm wind gusts were received Wednesday evening.
Please see the storm data entry for July 1st for additional reports related to this episode.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:28:00 to 30-JUN-10 19:36:00 (MST-7)
Location: RHAME
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No reports of damage from the strong winds was reported.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:30:00 to 30-JUN-10 19:41:00 (MST-7)
Location: GRIFFIN
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This report was relayed by the Bowman County Emergency Manager.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:30:00 to 30-JUN-10 19:40:00 (MST-7)
Location: BUFFALO SPGS
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Public

A large mature tree was blown down by the strong thunderstorm winds.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:35:00 to 30-JUN-10 19:45:00 (MST-7)
Location: BOWMAN
Magnitude: 64.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:35:00 to 30-JUN-10 19:45:00 (MST-7)
Location: SCRANTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This report was relayed by the Bowman County Emergency Manager.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:35:00 to 30-JUN-10 19:46:00 (MST-7)
Location: BOWMAN ARPT
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

This report was relayed by the Bowman County Emergency Manager.

Thunderstorm Wind in GOLDEN VALLEY, NORTH DAKOTA
From 30-JUN-10 20:36:00 to 30-JUN-10 20:46:00 (MST-7)
Location: BEACH
Magnitude: 56.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The strong thunderstorm winds blew down multiple cottonwood and evergreen trees. Some of the trees were 18 inches in diameter. Power lines were also reported down.

Thunderstorm Wind in BOWMAN, NORTH DAKOTA
From 30-JUN-10 19:52:00 to 30-JUN-10 20:02:00 (MST-7)
Location: BUFFALO SPGS
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

No reports of damage accompanied the strong thunderstorm winds.

Thunderstorm Wind in BILLINGS, NORTH DAKOTA
From 30-JUN-10 21:13:00 to 30-JUN-10 21:18:00 (MST-7)
Location: FRYBURG
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Thunderstorm Wind in DUNN, NORTH DAKOTA
From 30-JUN-10 21:40:00 to 30-JUN-10 21:55:00 (MST-7)
Location: KILLDEER
Magnitude: 59.00 MG
Property damage: 70.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Trees and power lines were reported down from the intense thunderstorm winds. In addition, a roof was partially torn off of the Buckskin Bar and Grill and an exterior sign was blown off of another building in Killdeer. Damage was also sustained to other buildings, along with two lightning related fires.