Friday, July 24th, was one of the hottest and most humid days of 2020. Afternoon high temperatures ranged from the upper 80s to middle 90s, with dew points in the middle 70s to lower 80s. During the early evening, thunderstorms broke out along two lines, one from Bismarck to northwest of Grand Forks, and the other from Bismarck to west of Fargo. By the late evening, the strongest storms along both lines were converging toward Grand Forks. This brought a period of very strong winds to eastern Grand Forks and eastern Walsh counties, continuing up toward the Lake of the Woods region. Meanwhile, another cluster of storms over south central North Dakota moved east-northeast, tracking through the Fargo-Moorhead area and into west central Minnesota during the overnight hours. These storms also produced some strong wind gusts.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:22:00 to 24-JUL-20 21:22:00 (CST-6)
Location: (GFK)GRAND FORKS INT
Magnitude: 54.00 MG
Reported by: ASOS

The wind gust was measured at the Grand Forks airport.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:30:00 to 24-JUL-20 21:30:00 (CST-6)
Location: GRAND FORKS
Magnitude: 56.00 EG
Reported by: Amateur Radio

Large tree branches were blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:30:00 to 24-JUL-20 21:30:00 (CST-6)
Location: BOLACK
Magnitude: 64.00 MG
Reported by: Mesonet

The wind gust was measured at the National Weather Service Office in Grand Forks. Two pine trees were uprooted and other large branches were blown down.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:31:00 to 24-JUL-20 21:31:00 (CST-6)
Location: BOLACK
Magnitude: 78.00 EG
Reported by: Social Media

Numerous trees were snapped or uprooted.

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:32:00 to 24-JUL-20 21:32:00 (CST-6)
Location: GRAND FORKS
Magnitude: 56.00 EG
Reported by: Amateur Radio

A light pole was blown down along south 48th street, at 32nd avenue.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 24-JUL-20 22:55:00 to 24-JUL-20 22:55:00 (CST-6)
Location: ARGUSVILLE
Magnitude: 52.00 EG
Reported by: NWS Employee

A few large branches were blown down in a shelterbelt.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 24-JUL-20 23:25:00 to 24-JUL-20 23:25:00 (CST-6)
Location: VENLO
Magnitude: 52.00 EG
Reported by: Public

Several large branches were blown down in a farm yard.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 24-JUL-20 23:45:00 to 24-JUL-20 23:45:00 (CST-6)
Location: COTTER
Magnitude: 52.00 EG
Reported by: NWS Storm Survey

Large branches were blown down near the Prairiewood Golf Course.

Hail in EDDY, NORTH DAKOTA
From 24-JUL-20 19:35:00 to 24-JUL-20 19:35:00 (CST-6)
Location: HAMAR
Magnitude: 1.00 
Reported by: Public

Thunderstorm Wind in GRAND FORKS, NORTH DAKOTA
From 24-JUL-20 21:31:00 to 24-JUL-20 21:31:00 (CST-6)
Location: BOLACK
Magnitude: 50.00 MG
Reported by: Mesonet

The wind gust was measured by a RWIS mesonet sensor along Interstate 29.

Hail in NELSON, NORTH DAKOTA
From 24-JUL-20 19:28:00 to 24-JUL-20 19:28:00 (CST-6)
Location: TOLNA
Magnitude: 0.88 
Reported by: Public

Thunderstorm Wind in GRIGGS, NORTH DAKOTA
From 24-JUL-20 20:35:00 to 24-JUL-20 20:35:00 (CST-6)
Location: COOPERSTOWN ARPT
Magnitude: 52.00 MG
Reported by: AWOS

The wind gust was measured at the Cooperstown airport.