Eastern North Dakota remained in a very weak surface pattern on the 18th, with numerous weak surface lows and boundaries across the midwest. Like the past several days, moisture levels remained very high, with surface dew points in the low to mid 60s. Some morning cloud cover along the North Dakota/South Dakota border lifted north by afternoon, and allowed a period of good heating. Although the upper level winds were fairly light, another in a series of upper level disturbances shifted over the area by mid afternoon. This helped initiate thunderstorm development over southeast North Dakota and west central Minnesota. A cluster of thunderstorms also developed over extreme northeast North Dakota. By late afternoon, a line of thunderstorms raced across the Mooreton (ND) area, through Wahpeton/Breckenridge, and into the Fergus Falls (MN) area. This line of storms brought many reports of strong winds. The weak wind flow and moist atmosphere once again brought heavy rainfall to areas along the Canadian border and areas along and south of Interstate 94.

Funnel Cloud in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:50:00 to 18-JUN-09 16:50:00 (CST-6)
Location: WOODHULL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A persistent wall cloud developed with a weak funnel.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:52:00 to 18-JUN-09 16:52:00 (CST-6)
Location: BARNEY
Magnitude: 70.00 EG
Reported by: NWS Storm Survey

Numerous large tree branches and limbs were torn down and several trees were uprooted around town.

Hail in RANSOM, NORTH DAKOTA
From 18-JUN-09 16:15:00 to 18-JUN-09 16:15:00 (CST-6)
Location: MC LEOD
Magnitude: 1.00 
Reported by: Public

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:30:00 to 18-JUN-09 16:40:00 (CST-6)
Location: COLFAX
Magnitude: 1.75 
Reported by: Broadcast Media

The large hail cracked windshields and stopped southbound traffic on Interstate 29 near mile point 36.

Tornado in RICHLAND, NORTH DAKOTA
From 18-JUN-09 17:04:00 to 18-JUN-09 17:20:00 (CST-6)
Location: MOORETON
Tornado F-scale: EF1
Reported by: NWS Storm Survey

A tornado developed over Mooreton and tracked eastward for about seven miles, then dissipated about two miles south-southeast of Dwight. The tornado flung bleachers through the chain-link backdrop of the Mooreton baseball field. The tornado and accompanying downburst winds produced widespread damage to trees, roofing materials, siding, and trim near Mooreton. Peak winds were estimated at about 90 mph.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 18-JUN-09 17:05:00 to 18-JUN-09 17:05:00 (CST-6)
Location: FAIRVIEW JCT
Magnitude: 56.00 MG
Reported by: Mesonet

The wind gust was measured at the Wahpeton RWIS site along highway 13 at mile point 384.

Hail in BARNES, NORTH DAKOTA
From 18-JUN-09 14:55:00 to 18-JUN-09 14:55:00 (CST-6)
Location: NOME
Magnitude: 1.00 
Reported by: Public

The hail fell along the Ransom and Barnes County line.

Hail in RANSOM, NORTH DAKOTA
From 18-JUN-09 14:55:00 to 18-JUN-09 14:55:00 (CST-6)
Location: FT RANSOM
Magnitude: 1.00 
Reported by: Public

The hail fell along the Ransom and Barnes County line.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:45:00 to 18-JUN-09 16:45:00 (CST-6)
Location: WYNDMERE
Magnitude: 70.00 EG
Reported by: Public

Downburst winds tore down numerous large branches and uprooted several trees through a four mile wide path extending from one mile south of Wyndmere to about three miles north of town. The damage path developed about 2 miles west of Wyndmere and continued eastward through Barney and Mooreton.

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:35:00 to 18-JUN-09 16:35:00 (CST-6)
Location: WYNDMERE
Magnitude: 2.00 
Reported by: Trained Spotter

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:30:00 to 18-JUN-09 16:30:00 (CST-6)
Location: PITCAIRN
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in PEMBINA, NORTH DAKOTA
From 18-JUN-09 13:54:00 to 18-JUN-09 13:54:00 (CST-6)
Location: HAMILTON
Magnitude: 1.25 
Reported by: Trained Spotter

Hail in CAVALIER, NORTH DAKOTA
From 18-JUN-09 14:14:00 to 18-JUN-09 14:14:00 (CST-6)
Location: OLGA
Magnitude: 1.00 
Reported by: Public

Funnel Cloud in RICHLAND, NORTH DAKOTA
From 18-JUN-09 15:52:00 to 18-JUN-09 15:52:00 (CST-6)
Location: COLFAX KURUC ARPT
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two funnel clouds were observed at this location.

Hail in RANSOM, NORTH DAKOTA
From 18-JUN-09 15:25:00 to 18-JUN-09 15:25:00 (CST-6)
Location: MC LEOD
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 18-JUN-09 15:45:00 to 18-JUN-09 15:45:00 (CST-6)
Location: ENGLEVALE
Magnitude: 52.00 EG
Reported by: Public

Three to four inch diameter tree branches were broken off.

Hail in PEMBINA, NORTH DAKOTA
From 18-JUN-09 14:20:00 to 18-JUN-09 14:20:00 (CST-6)
Location: BOWESMONT
Magnitude: 1.00 
Reported by: Public

Hail in SARGENT, NORTH DAKOTA
From 18-JUN-09 16:10:00 to 18-JUN-09 16:10:00 (CST-6)
Location: DE LAMERE
Magnitude: 0.75 
Reported by: Public

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 15:50:00 to 18-JUN-09 15:50:00 (CST-6)
Location: WYNDMERE
Magnitude: 2.00 
Reported by: Public

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:24:00 to 18-JUN-09 16:24:00 (CST-6)
Location: COLFAX KURUC ARPT
Magnitude: 2.75 
Reported by: Public

The hail fell at the intersection of county roads 8 and 1.

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:50:00 to 18-JUN-09 16:50:00 (CST-6)
Location: WAHPETON
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 18-JUN-09 17:03:00 to 18-JUN-09 17:03:00 (CST-6)
Location: FAIRVIEW JCT
Magnitude: 70.00 EG
Reported by: Law Enforcement

A semi tractor and trailer were blown over on the southbound lane of Interstate 29 about one mile south of the Mooreton Scale and one quarter mile north of the Wahpeton exit. Thunderstorm downburst winds likely formed coincident with a developing tornado which then passed just north of this incident as viewed by spotters.

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 17:10:00 to 18-JUN-09 17:10:00 (CST-6)
Location: WAHPETON
Magnitude: 1.00 
Reported by: Public

Quarter sized hail and wind gusts to 50 mph were reported at the North Dakota State School of Science.

Flash Flood in CAVALIER, NORTH DAKOTA
From 18-JUN-09 20:15:00 to 19-JUN-09 08:00:00 (CST-6)
Location: VANG
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 30.00K
Reported by: Law Enforcement

Farm fields flooded up to four feet deep in places in south Olga township.

Hail in RANSOM, NORTH DAKOTA
From 18-JUN-09 13:00:00 to 18-JUN-09 13:00:00 (CST-6)
Location: FT RANSOM
Magnitude: 1.00 
Reported by: Public

Significant tree damage was reported.

Hail in RICHLAND, NORTH DAKOTA
From 18-JUN-09 16:35:00 to 18-JUN-09 16:35:00 (CST-6)
Location: GALCHUTT
Magnitude: 1.75 
Reported by: Fire Department/Rescue

The hail fell along Interstate 29 at the Galchutt exit (mile point 31).

Flash Flood in RICHLAND, NORTH DAKOTA
From 18-JUN-09 19:57:00 to 19-JUN-09 08:30:00 (CST-6)
Location: COLFAX
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 75.00K
Reported by: NWS Storm Survey

Several fields and farm access roads were flooded between Colfax, Galchutt, and Abercrombie in Abercrombie and southeast Colfax townships. In the town of Abercrombie, 15 to 20 basements were flooded.

Flash Flood in PEMBINA, NORTH DAKOTA
From 18-JUN-09 16:00:00 to 19-JUN-09 04:00:00 (CST-6)
Location: CONCRETE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A culvert was blown out due to excessive rainfall about one mile east of Mountain. More flash flooding was reported about 2 miles north of Concrete.