In the late afternoon of Sunday July 15th, Severe Thunderstorm Watch 521 was issued in anticipation of severe thunderstorms developing in the vicinity of a stalled surface front over eastern North Dakota, and downstream from an embedded mid level vorticity maximum over southern Manitoba. Three severe thunderstorm warnings and one tornado warning were issued. Reports of large hail, severe thunderstorm wind gusts, and a tornado, were received as a supercell thunderstorm raced through Foster, Stutsman, LaMoure, and Dickey counties, and into South Dakota.

Hail in DICKEY, NORTH DAKOTA
From 15-JUL-07 22:05:00 to 15-JUL-07 22:12:00 (CST-6)
Location: ELLENDALE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in DICKEY, NORTH DAKOTA
From 15-JUL-07 21:45:00 to 15-JUL-07 22:25:00 (CST-6)
Location: MERRICOURT
Magnitude: 83.00 EG
Property damage: 250.00K
Crop damage: 500.00K
Reported by: Emergency Manager

Combined severe thunderstorm winds and hail as large as half dollars (1.25 inch diameter) resulted in very significant crop damage through Dickey County. Damage extended from near the Lamoure County line northeast of Merricourt, through Dickey County, into Brown County, South Dakota. Dickey County Emergency Management reported an average 4 mile wide hail swath in the vicinity of Highway 281 with nearly 100 percent crop damage is some areas. At 1100 PM CDT an estimated 95 mph wind 1 mile west of Monango damaged many outbuildings on a hog farm. Some buildings were significantly damaged at the farm. This same storm crossed into Brown County, South Dakota, and did extensive damage there. See the StormData entry from the Aberdeen National Weather Service office.

Hail in LA MOURE, NORTH DAKOTA
From 15-JUL-07 21:35:00 to 15-JUL-07 21:40:00 (CST-6)
Location: EDGELEY
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Law Enforcement

There was damage to siding and windows. See other LaMoure County StormData entries for the evening of July 15, 2007, to include hail, wind, and tornado.

Thunderstorm Wind in LA MOURE, NORTH DAKOTA
From 15-JUL-07 21:15:00 to 15-JUL-07 21:45:00 (CST-6)
Location: EDGELEY
Magnitude: 78.00 EG
Property damage: 200.00K
Crop damage: 100.00K
Reported by: Newspaper

Three towers were downed along a 115-kilovolt line owned by the Western Area Power Administration. Power failed at 10:18 PM CDT. Newspaper read a variety of hail, wind, and tornado damage in LaMoure County. See other LaMoure County StormData entries for the evening of July 15, 2007, to include hail, wind, and tornado.

Hail in FOSTER, NORTH DAKOTA
From 15-JUL-07 19:50:00 to 15-JUL-07 19:55:00 (CST-6)
Location: GRACE CITY
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in FOSTER, NORTH DAKOTA
From 15-JUL-07 19:51:00 to 15-JUL-07 19:58:00 (CST-6)
Location: GRACE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in STUTSMAN, NORTH DAKOTA
From 15-JUL-07 20:45:00 to 15-JUL-07 20:51:00 (CST-6)
Location: SPIRITWOOD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in STUTSMAN, NORTH DAKOTA
From 15-JUL-07 20:50:00 to 15-JUL-07 20:57:00 (CST-6)
Location: ELDRIDGE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tornado in LA MOURE, NORTH DAKOTA
From 15-JUL-07 21:30:00 to 15-JUL-07 21:35:00 (CST-6)
Location: EDGELEY
Tornado F-scale: EF1
Property damage: 500.00K
Crop damage: 100.00K
Reported by: Newspaper

Estimated speed 105 mph. Damage on a farm 7 miles north of Edgeley. Farm outbuildings damaged and one machine shed destroyed. Equipment damaged including grain trucks, tractors, and combines. The farm house was not damaged and no one was killed or injured. The National Weather Service learned of the event through newspaper articles. The articles read that an insurance agent and the LaMoure County Sheriff assessed the event to be a tornado. See other LaMoure County StormData entries for the evening of July 15, 2007, to include hail, wind, and tornado.