Afternoon temperatures rose into the upper 70s to around 80 with dew point values in the mid to upper 50s over most of western and central North Dakota. Temperatures were much cooler over eastern North Dakota, or in the mid to upper 60s. Thunderstorms formed over north central North Dakota during the late afternoon and generally tracked to the southeast into the southern Red River Valley by the mid evening hours. These storms had quite a bit of rotation, with numerous reports of wall clouds, funnels, and even tornadoes.

Hail in BENSON, NORTH DAKOTA
From 20-JUN-15 15:22:00 to 20-JUN-15 15:22:00 (CST-6)
Location: KNOX
Magnitude: 0.88 
Reported by: Public

Pea to nickel sized hail fell.

Hail in RAMSEY, NORTH DAKOTA
From 20-JUN-15 15:50:00 to 20-JUN-15 15:50:00 (CST-6)
Location: CHURCHS FERRY
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 16:49:00 to 20-JUN-15 16:49:00 (CST-6)
Location: REVERE
Magnitude: 0.75 
Reported by: Trained Spotter

Crop damage was also reported south of Hannaford, near Walum.

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 16:59:00 to 20-JUN-15 16:59:00 (CST-6)
Location: WALUM
Magnitude: 1.75 
Reported by: Public

Hail in BARNES, NORTH DAKOTA
From 20-JUN-15 17:03:00 to 20-JUN-15 17:03:00 (CST-6)
Location: KOLDOK
Magnitude: 1.25 
Reported by: Trained Spotter

Funnel Cloud in GRIGGS, NORTH DAKOTA
From 20-JUN-15 18:05:00 to 20-JUN-15 18:05:00 (CST-6)
Location: SUTTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter located west of Cooperstown reported the end of the short track tornado as it lifted.

Tornado in GRIGGS, NORTH DAKOTA
From 20-JUN-15 18:02:00 to 20-JUN-15 18:05:00 (CST-6)
Location: MOSE
Tornado F-scale: EF0
Property damage: 0.00K
Reported by: Social Media

A weak tornado kicked up dust on the ground. An observer indicated the circulation was on the ground for about three minutes. No property damage occurred as the tornado remained over open fields the entire time. Peak winds were estimated at 80 mph.

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 18:12:00 to 20-JUN-15 18:12:00 (CST-6)
Location: COOPERSTOWN
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in RICHLAND, NORTH DAKOTA
From 20-JUN-15 18:17:00 to 20-JUN-15 18:17:00 (CST-6)
Location: COLFAX KURUC ARPT
Magnitude: 0.75 
Reported by: Trained Spotter

Dime sized hail was still in piles an hour after the storm.

Hail in RICHLAND, NORTH DAKOTA
From 20-JUN-15 18:22:00 to 20-JUN-15 18:22:00 (CST-6)
Location: COLFAX KURUC ARPT
Magnitude: 1.00 
Reported by: Public

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 17:04:00 to 20-JUN-15 17:04:00 (CST-6)
Location: HANNAFORD
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in BARNES, NORTH DAKOTA
From 20-JUN-15 17:18:00 to 20-JUN-15 17:18:00 (CST-6)
Location: DAZEY BRYN ARPT
Magnitude: 0.88 
Reported by: Public

Hail in BARNES, NORTH DAKOTA
From 20-JUN-15 17:13:00 to 20-JUN-15 17:13:00 (CST-6)
Location: DAZEY BRYN ARPT
Magnitude: 1.75 
Reported by: Public

Hail in STEELE, NORTH DAKOTA
From 20-JUN-15 17:43:00 to 20-JUN-15 17:43:00 (CST-6)
Location: SHARON
Magnitude: 1.00 
Reported by: Public

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 17:58:00 to 20-JUN-15 17:58:00 (CST-6)
Location: MOSE
Magnitude: 0.75 
Reported by: Trained Spotter

Hail in BENSON, NORTH DAKOTA
From 20-JUN-15 14:40:00 to 20-JUN-15 14:40:00 (CST-6)
Location: HESPER
Magnitude: 0.75 
Reported by: Public

Tornado in TOWNER, NORTH DAKOTA
From 20-JUN-15 15:10:00 to 20-JUN-15 15:10:00 (CST-6)
Location: NEWVILLE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A brief tornado touchdown was reported.

Hail in RAMSEY, NORTH DAKOTA
From 20-JUN-15 16:18:00 to 20-JUN-15 16:18:00 (CST-6)
Location: SOUTHAM
Magnitude: 1.50 
Reported by: Public

Hail in RAMSEY, NORTH DAKOTA
From 20-JUN-15 16:20:00 to 20-JUN-15 16:20:00 (CST-6)
Location: DARBY
Magnitude: 1.50 
Reported by: Social Media

Hail in RICHLAND, NORTH DAKOTA
From 20-JUN-15 18:55:00 to 20-JUN-15 18:55:00 (CST-6)
Location: KEYSTONE
Magnitude: 1.50 
Reported by: Public

Hail in RICHLAND, NORTH DAKOTA
From 20-JUN-15 19:08:00 to 20-JUN-15 19:08:00 (CST-6)
Location: FAIRMOUNT
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 20-JUN-15 18:22:00 to 20-JUN-15 18:22:00 (CST-6)
Location: COLFAX KURUC ARPT
Magnitude: 52.00 EG
Reported by: Public

A fifty foot tall tree was blown down.

Hail in GRIGGS, NORTH DAKOTA
From 20-JUN-15 16:53:00 to 20-JUN-15 16:53:00 (CST-6)
Location: WALUM
Magnitude: 1.50 
Reported by: Public

Hail in EDDY, NORTH DAKOTA
From 20-JUN-15 15:35:00 to 20-JUN-15 15:35:00 (CST-6)
Location: NEW ROCKFORD
Magnitude: 1.00 
Reported by: Social Media

Hail in BENSON, NORTH DAKOTA
From 20-JUN-15 16:38:00 to 20-JUN-15 16:38:00 (CST-6)
Location: TOKIO
Magnitude: 2.00 
Reported by: Social Media

The hail fell from Sully's Hill to St. Michael.