Thunderstorms formed along a cold front during the evening hours of July 23rd. These storms produced large hail, strong winds, and a few tornadoes.

Thunderstorm Wind in RAMSEY, NORTH DAKOTA
From 23-JUL-15 20:40:00 to 23-JUL-15 20:40:00 (CST-6)
Location: WEBSTER
Magnitude: 55.00 EG
Reported by: Public

Numerous six inch diameter tree branches were blown down by the strong wind.

Hail in TOWNER, NORTH DAKOTA
From 23-JUL-15 19:05:00 to 23-JUL-15 19:05:00 (CST-6)
Location: ZION
Magnitude: 1.00 
Reported by: Public

Hail in TOWNER, NORTH DAKOTA
From 23-JUL-15 19:35:00 to 23-JUL-15 19:35:00 (CST-6)
Location: CANDO
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 23-JUL-15 20:00:00 to 23-JUL-15 20:00:00 (CST-6)
Location: HARLOW
Magnitude: 52.00 EG
Reported by: Public

A large tree branch fell and damaged a power line.

Thunderstorm Wind in PEMBINA, NORTH DAKOTA
From 23-JUL-15 20:00:00 to 23-JUL-15 20:00:00 (CST-6)
Location: CAVALIER
Magnitude: 56.00 MG
Reported by: AWOS

Thunderstorm Wind in BENSON, NORTH DAKOTA
From 23-JUL-15 20:05:00 to 23-JUL-15 20:05:00 (CST-6)
Location: MINNEWAUKAN
Magnitude: 60.00 EG
Reported by: Public

Two cottonwood trees were broken in half onto a driveway by the strong winds.

Thunderstorm Wind in RAMSEY, NORTH DAKOTA
From 23-JUL-15 20:40:00 to 23-JUL-15 20:40:00 (CST-6)
Location: WEBSTER
Magnitude: 60.00 EG
Reported by: Public

An almost completed seed building was blown over. The building was wood framed with about ten rafters left to put on before completion.

Thunderstorm Wind in EDDY, NORTH DAKOTA
From 23-JUL-15 21:27:00 to 23-JUL-15 21:27:00 (CST-6)
Location: HAMAR
Magnitude: 51.00 MG
Reported by: Mesonet

An NDAWN mesonet station eight miles north of McHenry reported the peak wind gust.

Tornado in NELSON, NORTH DAKOTA
From 23-JUL-15 21:36:00 to 23-JUL-15 21:40:00 (CST-6)
Location: TOLNA
Tornado F-scale: EF1
Reported by: NWS Storm Survey

The tornado uprooted several trees, bent a tower, and blew a quonset storage building off its foundation. Most of the damage occurred in the vicinity of Lee Avenue on the south side of Tolna, including the city park area. A power outage also occurred as the tornado hit. Peak winds were estimated at 110 mph.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 23-JUL-15 21:40:00 to 23-JUL-15 21:40:00 (CST-6)
Location: TOLNA
Magnitude: 60.00 EG
Reported by: Department of Highways

Several buildings were damaged in Tolna along with numerous trees.

Hail in WALSH, NORTH DAKOTA
From 23-JUL-15 21:45:00 to 23-JUL-15 21:45:00 (CST-6)
Location: FORDVILLE
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 23-JUL-15 21:48:00 to 23-JUL-15 21:48:00 (CST-6)
Location: PEKIN
Magnitude: 53.00 MG
Reported by: Mesonet

The wind gust was measured by a NDAWN mesonet sensor located near Pekin.

Thunderstorm Wind in NELSON, NORTH DAKOTA
From 23-JUL-15 22:05:00 to 23-JUL-15 22:05:00 (CST-6)
Location: ANETA GEHRKE ARPT
Magnitude: 55.00 EG
Reported by: Public

Several six inch diameter tree branches were blown down.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 23-JUL-15 22:25:00 to 23-JUL-15 22:25:00 (CST-6)
Location: SANBORN
Magnitude: 50.00 EG
Reported by: Public

Several four inch diameter tree branches were blown down.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 23-JUL-15 22:50:00 to 23-JUL-15 22:50:00 (CST-6)
Location: TAFT
Magnitude: 53.00 MG
Reported by: Public

The wind gust was measured by a Davis mesonet station.

Tornado in TRAILL, NORTH DAKOTA
From 23-JUL-15 22:51:00 to 23-JUL-15 22:53:00 (CST-6)
Location: PORTLAND JCT
Tornado F-scale: EF1
Reported by: Public

A tornado lasted only briefly west-northwest of Buxton. A mature tree was snapped in a farm shelterbelt and numerous large branches were blown down. Peak winds were estimated at 90 mph.

Thunderstorm Wind in TRAILL, NORTH DAKOTA
From 23-JUL-15 23:00:00 to 23-JUL-15 23:00:00 (CST-6)
Location: TAFT
Magnitude: 55.00 EG
Reported by: Broadcast Media

Two fifteen to twenty foot tall trees were blown down in Cummings.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 23-JUL-15 23:10:00 to 23-JUL-15 23:10:00 (CST-6)
Location: HUNTER
Magnitude: 55.00 EG
Reported by: Social Media

A tree was blown over.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 23-JUL-15 23:19:00 to 23-JUL-15 23:19:00 (CST-6)
Location: HUNTER
Magnitude: 56.00 MG
Reported by: Mesonet

The peak wind was measured by a personal weather station.