A cold front moved into eastern North Dakota in the early morning hours of the 3rd and helped spawn a thunderstorm complex that moved from near Cooperstown (ND) to near St. Vincent (MN). Most of the severe events that occurred were destructive thunderstorm wind gusts, but there were also a few reports of hail.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 03-JUN-11 01:44:00 to 03-JUN-11 01:44:00 (CST-6)
Location: HAMAR
Magnitude: 53.00 MG
Reported by: Mesonet

The wind gust was measured at the NDAWN mesonet station located 8 miles north of McHenry.

Thunderstorm Wind in GRIGGS, NORTH DAKOTA
From 03-JUN-11 01:45:00 to 03-JUN-11 01:45:00 (CST-6)
Location: COOPERSTOWN
Magnitude: 52.00 EG
Reported by: Law Enforcement

Many large tree branches were blown down.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 03-JUN-11 02:00:00 to 03-JUN-11 02:00:00 (CST-6)
Location: HAMAR
Magnitude: 61.00 EG
Reported by: Trained Spotter

Cattle pens were damaged and a large tank was blown across the road.

Hail in GRAND FORKS, NORTH DAKOTA
From 03-JUN-11 02:25:00 to 03-JUN-11 02:25:00 (CST-6)
Location: LARIMORE
Magnitude: 0.75 
Reported by: Broadcast Media

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 03-JUN-11 02:30:00 to 03-JUN-11 02:30:00 (CST-6)
Location: ARVILLA
Magnitude: 56.00 EG
Reported by: Broadcast Media

Trees were uprooted and some fell on a house.

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 03-JUN-11 02:45:00 to 03-JUN-11 02:45:00 (CST-6)
Location: KERRY
Magnitude: 56.00 EG
Reported by: COOP Observer

The roof to a barn built in 1985 was blown off. Numerous tree branches were also blown down.

Hail in WALSH, NORTH DAKOTA
From 03-JUN-11 02:50:00 to 03-JUN-11 02:50:00 (CST-6)
Location: EDINBURG
Magnitude: 0.88 
Reported by: Law Enforcement

Thunderstorm Wind in WALSH, NORTH DAKOTA
From 03-JUN-11 02:40:00 to 03-JUN-11 02:40:00 (CST-6)
Location: PLEASANT VLY
Magnitude: 56.00 EG
Reported by: Public

Several mature evergreen trees were uprooted.

Thunderstorm Wind in PEMBINA, NORTH DAKOTA
From 03-JUN-11 03:05:00 to 03-JUN-11 03:05:00 (CST-6)
Location: DRAYTON
Magnitude: 52.00 EG
Reported by: Amateur Radio

Large tree branches were blown down.

Thunderstorm Wind in PEMBINA, NORTH DAKOTA
From 03-JUN-11 03:15:00 to 03-JUN-11 03:15:00 (CST-6)
Location: CAVALIER
Magnitude: 50.00 MG
Reported by: AWOS

Large tree branches were blown down around town. A 58 mph wind gust was measured at the Cavalier AWOS.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 03-JUN-11 02:25:00 to 03-JUN-11 02:25:00 (CST-6)
Location: DAHLEN
Magnitude: 50.00 EG
Reported by: NWS Storm Survey

Numerous large branches were broken off trees across several shelterbelts in Dahlen Township.

Tornado in WALSH, NORTH DAKOTA
From 03-JUN-11 02:40:00 to 03-JUN-11 02:56:00 (CST-6)
Location: PLEASANT VLY
Tornado F-scale: EF1
Reported by: NWS Storm Survey

This tornado tracked intermittently for about 26 total miles, while wrapped in heavy rain and downburst winds. About sixteen of the miles occurred in Walsh County with about ten miles in Pembina County. The tornado touched down near Pleasant Valley, passed near Homme Dam, then crossed into Pembina County about one mile northwest of Hoople. The tornado snapped or uprooted numerous trees and tore a roof off of a pole barn. Peak winds were estimated at 95 mph.

Tornado in PEMBINA, NORTH DAKOTA
From 03-JUN-11 02:56:00 to 03-JUN-11 03:06:00 (CST-6)
Location: CRYSTAL
Tornado F-scale: EF1
Reported by: NWS Storm Survey

This tornado began in Walsh County, about six miles west-southwest of Park River.  The tornado tracked intermittently for about 26 total miles, while wrapped in heavy rain and downburst winds. About ten of the miles occurred in Pembina County, while about sixteen of the miles occurred in Walsh County. Numerous trees were either snapped or uprooted along its track. Peak winds were estimated at 95 mph.