A surface cold front advecting from west to east, coupled with a mid level jet streak, combined with abundant moisture and instability to result in widespread thunderstorm activity during the afternoon and evening hours of June 25th.  Numerous reports of large hail and several reports of severe thunderstorm wind gusts were received.
The overall tornado threat was low due to insufficient deep layer shear, although there was supportive surface vorticity and low level cape which led to one report of a funnel cloud and several reports of general rotation at the base of the storms.
Also during this episode, training thunderstorms across northwest and north central North Dakota resulted in locally very heavy rainfall which resulted in the issuance of several flash flood warnings.

Hail in RENVILLE, NORTH DAKOTA
From 25-JUN-11 16:19:00 to 25-JUN-11 16:25:00 (CST-6)
Location: MOHALL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 16:23:00 to 25-JUN-11 16:28:00 (CST-6)
Location: ECKMAN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 16:23:00 to 25-JUN-11 16:27:00 (CST-6)
Location: PARSHALL
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in WARD, NORTH DAKOTA
From 25-JUN-11 16:17:00 to 25-JUN-11 16:37:00 (CST-6)
Location: KENMARE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain of one inch in twenty minutes was reported.

Hail in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 16:42:00 to 25-JUN-11 16:45:00 (CST-6)
Location: MAXBASS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in MCHENRY, NORTH DAKOTA
From 25-JUN-11 17:05:00 to 25-JUN-11 17:15:00 (CST-6)
Location: UPHAM
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WARD, NORTH DAKOTA
From 25-JUN-11 17:23:00 to 25-JUN-11 17:23:00 (CST-6)
Location: MINOT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Heavy Rain in WARD, NORTH DAKOTA
From 25-JUN-11 16:37:00 to 25-JUN-11 17:37:00 (CST-6)
Location: DES LACS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Heavy rain of two inches was reported.

Heavy Rain in MCHENRY, NORTH DAKOTA
From 25-JUN-11 18:17:00 to 25-JUN-11 18:17:00 (CST-6)
Location: UPHAM
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A heavy rainfall report of 2.9 inches in less than one hour was received.

Thunderstorm Wind in MCHENRY, NORTH DAKOTA
From 25-JUN-11 18:20:00 to 25-JUN-11 18:23:00 (CST-6)
Location: BANTRY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winds were estimated at 60 miles per hour.

Hail in WELLS, NORTH DAKOTA
From 25-JUN-11 19:23:00 to 25-JUN-11 19:27:00 (CST-6)
Location: FESSENDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm Wind in PIERCE, NORTH DAKOTA
From 25-JUN-11 18:20:00 to 25-JUN-11 18:22:00 (CST-6)
Location: BARTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Winds were estimated at 60 miles per hour.

Thunderstorm Wind in ROLETTE, NORTH DAKOTA
From 25-JUN-11 18:30:00 to 25-JUN-11 18:37:00 (CST-6)
Location: NANSON
Magnitude: 74.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Strong thunderstorm winds blew off a barn roof.

Thunderstorm Wind in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 18:28:00 to 25-JUN-11 18:37:00 (CST-6)
Location: WILLOW CITY
Magnitude: 70.00 EG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Newspaper

Strong thunderstorm winds uprooted numerous trees and blew down utility poles in the Willow City area.

Thunderstorm Wind in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 18:01:00 to 25-JUN-11 18:11:00 (CST-6)
Location: WILLOW CITY
Magnitude: 74.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Newspaper

Thunderstorm wind damage was sustained to trees and a large barn was blown down.

Hail in WELLS, NORTH DAKOTA
From 25-JUN-11 19:24:00 to 25-JUN-11 19:29:00 (CST-6)
Location: FESSENDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy Rain in ROLETTE, NORTH DAKOTA
From 25-JUN-11 19:29:00 to 25-JUN-11 19:29:00 (CST-6)
Location: DUNSEITH
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A heavy rainfall report of 1.5 inches in 20 minutes was received.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-11 20:14:00 to 25-JUN-11 20:19:00 (CST-6)
Location: NEW SALEM
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in MCHENRY, NORTH DAKOTA
From 25-JUN-11 18:40:00 to 25-JUN-11 20:00:00 (CST-6)
Location: BANTRY
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive runoff from heavy rain resulted in flash flooding over north central McHenry County. Low water crossing areas were flooded to a depth of between one and two feet. Damage to roads was minor.

Hail in MORTON, NORTH DAKOTA
From 25-JUN-11 20:14:00 to 25-JUN-11 20:19:00 (CST-6)
Location: NEW SALEM
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in ROLETTE, NORTH DAKOTA
From 25-JUN-11 18:46:00 to 25-JUN-11 18:49:00 (CST-6)
Location: ROLETTE
Magnitude: 70.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: COOP Observer

Thunderstorm wind damage to a golf course shed was reported. Wind speed is estimated based on the damage description.

Thunderstorm Wind in PIERCE, NORTH DAKOTA
From 25-JUN-11 18:22:00 to 25-JUN-11 18:30:00 (CST-6)
Location: BARTON
Magnitude: 87.00 EG
Property damage: 150.00K
Crop damage: 0.00K
Reported by: Newspaper

Winds were estimated at 100 miles per hour by a local resident with a wind meter.  Numerous trees in the Barton area were uprooted, and several structures were damaged from the very strong winds.

Heavy Rain in WARD, NORTH DAKOTA
From 25-JUN-11 14:50:00 to 25-JUN-11 15:50:00 (CST-6)
Location: KENMARE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A public report of 2 inches of heavy rain was relayed by broadcast media.

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 14:44:00 to 25-JUN-11 14:47:00 (CST-6)
Location: NEW TOWN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 14:29:00 to 25-JUN-11 14:34:00 (CST-6)
Location: SANISH
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash Flood in RENVILLE, NORTH DAKOTA
From 25-JUN-11 17:15:00 to 25-JUN-11 19:45:00 (CST-6)
Location: MOHALL
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive runoff from heavy rain resulted in flash flooding near and south of Mohall with water running nearly two feet deep over roads. Gravel roads were in need of repair after the event. There was a report of one inch of rain in 20 minutes from storms moving through the area.

Hail in BURKE, NORTH DAKOTA
From 25-JUN-11 15:14:00 to 25-JUN-11 15:19:00 (CST-6)
Location: POWERS LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 15:14:00 to 25-JUN-11 15:20:00 (CST-6)
Location: NEW TOWN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 15:19:00 to 25-JUN-11 15:24:00 (CST-6)
Location: BELDEN
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 16:09:00 to 25-JUN-11 16:12:00 (CST-6)
Location: MAXBASS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in RENVILLE, NORTH DAKOTA
From 25-JUN-11 16:14:00 to 25-JUN-11 16:30:00 (CST-6)
Location: MOHALL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in BOTTINEAU, NORTH DAKOTA
From 25-JUN-11 18:01:00 to 25-JUN-11 18:04:00 (CST-6)
Location: WILLOW CITY
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Funnel Cloud in MOUNTRAIL, NORTH DAKOTA
From 25-JUN-11 16:23:00 to 25-JUN-11 16:25:00 (CST-6)
Location: PARSHALL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A funnel cloud briefly formed near Parshall.