Unusually warm and humid air remained in place during the early morning hours of the 14th, especially along and south of the Interstate 94 corridor. Temperatures hovered in the lower 70s with dew point temperatures in the upper 60s to around 70. A line of thunderstorms moved east across southeast North Dakota into west central Minnesota, producing mainly strong wind gusts.

Thunderstorm Wind in WADENA, MINNESOTA
From 14-JUL-10 06:13:00 to 14-JUL-10 06:23:00 (CST-6)
Location: WADENA ARPT
Magnitude: 61.00 MG
Reported by: Mesonet

The winds gusted from 59 to 70 mph.

Flash Flood in OTTER TAIL, MINNESOTA
From 14-JUL-10 06:55:00 to 14-JUL-10 09:00:00 (CST-6)
Location: PERHAM ARPT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 50.00K
Reported by: Law Enforcement

Street flooding was reported in Perham. In nearby New York Mills, 3.47 inches of rain fell.

Thunderstorm Wind in OTTER TAIL, MINNESOTA
From 14-JUL-10 05:36:00 to 14-JUL-10 05:36:00 (CST-6)
Location: DALTON
Magnitude: 55.00 EG
Reported by: Trained Spotter

An eight inch diameter tree branch was blown down and power was out.

Thunderstorm Wind in CLAY, MINNESOTA
From 14-JUL-10 03:46:00 to 14-JUL-10 03:46:00 (CST-6)
Location: MOORHEAD ARPT
Magnitude: 52.00 MG
Reported by: Mesonet

The wind gust was reported by a MNDOT RWIS site along Interstate 94.

Thunderstorm Wind in OTTER TAIL, MINNESOTA
From 14-JUL-10 05:47:00 to 14-JUL-10 05:47:00 (CST-6)
Location: OTTERTAIL
Magnitude: 55.00 MG
Reported by: Mesonet

The wind gust was measured by a MNDOT RWIS site on highway 78.

Thunderstorm Wind in OTTER TAIL, MINNESOTA
From 14-JUL-10 06:12:00 to 14-JUL-10 06:12:00 (CST-6)
Location: BLUFFTON
Magnitude: 63.00 MG
Reported by: AWOS

The wind gust was measured at the Wadena Airport.

Thunderstorm Wind in WADENA, MINNESOTA
From 14-JUL-10 05:20:00 to 14-JUL-10 05:30:00 (CST-6)
Location: SEBEKA
Magnitude: 52.00 EG
Reported by: Trained Spotter

Downburst winds of from 50 to 60 mph occurred ahead of and concurrent with a  squall line.

Thunderstorm Wind in WADENA, MINNESOTA
From 14-JUL-10 05:35:00 to 14-JUL-10 05:38:00 (CST-6)
Location: NIMROD
Magnitude: 52.00 EG
Reported by: Public

Large tree limbs were broken down and small wind driven hail raked flower beds. hail sized estimated at dime to nickel sized.

Thunderstorm Wind in BECKER, MINNESOTA
From 14-JUL-10 05:27:00 to 14-JUL-10 05:28:00 (CST-6)
Location: LAKE PARK
Magnitude: 50.00 EG
Reported by: NWS Storm Survey

Several Large tree limbs were broken down in shelter belts near U.S. Highway 10.

Thunderstorm Wind in WILKIN, MINNESOTA
From 14-JUL-10 05:05:00 to 14-JUL-10 05:15:00 (CST-6)
Location: BRECKENRIDGE
Magnitude: 87.00 EG
Property damage: 250.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Numerous large trees were snapped or uprooted at various locations along a roughly 3 mile wide path centered along MN Highway 210. Farm machinery was moved about, doors and roofing materials were torn off farm buildings and homes. Peak winds estimated at 90 to 100 mph at multiple locations.

Tornado in WADENA, MINNESOTA
From 14-JUL-10 06:20:00 to 14-JUL-10 06:22:00 (CST-6)
Location: OYLEN
Tornado F-scale: EF0
Reported by: NWS Storm Survey

This tornado mainly affected portions of Lyons State Forest. Several poplar trees were snapped or blown down across CR 26. A damage path was evident further back into the trees on both sides of the county road, but access to view additional damage away from the road was not possible due to poor road conditions and high water. Peak winds were estimated from 75 to 80 mph.

Thunderstorm Wind in CLAY, MINNESOTA
From 14-JUL-10 03:40:00 to 14-JUL-10 03:40:00 (CST-6)
Location: MOORHEAD
Magnitude: 52.00 EG
Reported by: Law Enforcement

The strong winds knocked down power lines and large trees 1.5 to 2 feet in diameter. Several sections of wooden fencing were blown down near U.S. Highway 75.

Thunderstorm Wind in MAHNOMEN, MINNESOTA
From 14-JUL-10 04:36:00 to 14-JUL-10 04:36:00 (CST-6)
Location: MAHNOMEN
Magnitude: 60.00 MG
Reported by: Mesonet

Tornado in OTTER TAIL, MINNESOTA
From 14-JUL-10 05:27:00 to 14-JUL-10 05:40:00 (CST-6)
Location: NEW YORK MILLS ARPT
Tornado F-scale: EF1
Property damage: 300.00K
Crop damage: 250.00K
Reported by: NWS Storm Survey

This tornado was enshrouded in heavy rain, large hail, and damaging downburst winds. Numerous large trees were knocked down or uprooted along this path. At least 6 wooden power poles were snapped off. One farmstead lost a section of a large pole shed. A nearby farmstead had a concrete silo toppled. This tornado crossed part of the damage field from a larger June 17th tornado north of Bluffton in Bluffton Township.