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 CASS, NORTH DAKOTA
From 14-JUL-10 03:18:00 to 14-JUL-10 03:18:00 (CST-6)
Location: CASSELTON
Magnitude: 65.00 EG
Reported by: Trained Spotter

A spotter estimated the winds to be around 75 mph.

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 14-JUL-10 04:23:00 to 14-JUL-10 04:23:00 (CST-6)
Location: WYNDMERE
Magnitude: 52.00 EG
Reported by: Trained Spotter

The winds were estimated by a trained weather spotter.

Funnel Cloud in RANSOM, NORTH DAKOTA
From 14-JUL-10 03:10:00 to 14-JUL-10 03:10:00 (CST-6)
Location: LISBON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

State radio relayed the public report of the funnel cloud sighting.

Hail in RICHLAND, NORTH DAKOTA
From 14-JUL-10 04:23:00 to 14-JUL-10 04:23:00 (CST-6)
Location: WYNDMERE
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in RICHLAND, NORTH DAKOTA
From 14-JUL-10 03:17:00 to 14-JUL-10 03:17:00 (CST-6)
Location: WYNDMERE
Magnitude: 52.00 EG
Reported by: Trained Spotter

The spotter estimated wind speeds of 50 to 60 mph.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 14-JUL-10 03:17:00 to 14-JUL-10 03:21:00 (CST-6)
Location: LEONARD
Magnitude: 54.00 MG
Reported by: Mesonet

Peak gust measured at the NDAWN winds sensor near ND Highway 46.  Numerous large tree limbs were blown down in shelter belts along Highway 46 and in farmsteads and communities near the highway.

Thunderstorm Wind in BARNES, NORTH DAKOTA
From 14-JUL-10 02:35:00 to 14-JUL-10 02:38:00 (CST-6)
Location: KATHRYN
Magnitude: 61.00 EG
Reported by: Trained Spotter

Numerous large tree limbs were broken down around the community.

Tornado in RANSOM, NORTH DAKOTA
From 14-JUL-10 02:59:00 to 14-JUL-10 03:11:00 (CST-6)
Location: LISBON MUNI ARPT
Tornado F-scale: EF2
Property damage: 2.00M
Crop damage: 400.00K
Reported by: NWS Storm Survey

This tornado was embedded in a squall line which also produced large hail and a wide swath of damaging downburst winds. The most extreme tornado damage was observed at two farmsteads, one about four miles west of Lisbon where a barn was ripped off its foundation and destroyed, and another about 4 miles ESE of Lisbon where a well constructed steel shop was completely blown apart. At least three wooden power poles were snapped at two different locations east of Lisbon. Numerous lareg trees were blown down or uprooted in Lisbon, and many homes and business had extensive roofing damage. peak winds estimated to 120 mph.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 14-JUL-10 03:34:00 to 14-JUL-10 03:37:00 (CST-6)
Location: WEST FARGO
Magnitude: 78.00 EG
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

A Squall Line with damaging downburst winds raked across West Fargo and into Fargo through the early morning hours. Winds flipped over two semi trailors parked near the fair grounds and completly tore off a large metal section of city garbage transfer station along U.S. Highway 10. Industrial business roofing damage and the movement of small machinery items in various lots indicated the occurence of one or more small surface eddies in the overall downburst pattern.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 14-JUL-10 03:02:00 to 14-JUL-10 03:02:00 (CST-6)
Location: LISBON MUNI ARPT
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Winds measured at the NDAWN sensor located one half mile south of the airport sensor measured a peak wind to 58 mph.

Thunderstorm Wind in RANSOM, NORTH DAKOTA
From 14-JUL-10 03:19:00 to 14-JUL-10 03:24:00 (CST-6)
Location: LISBON MUNI ARPT
Magnitude: 70.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

And old barn collapsed and the back end of a pole shed was blown off by damaging downburst winds.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 14-JUL-10 03:40:00 to 14-JUL-10 03:40:00 (CST-6)
Location: FARGO
Magnitude: 50.00 EG
Reported by: Trained Spotter

A two hundred pound grill was pushed across a deck and lawn furniture was blown about. Peak winds at Fargo Hector airport (KFAR) ranged from 45 to 57 mph for about 20 minutes.

Tornado in RANSOM, NORTH DAKOTA
From 14-JUL-10 02:45:00 to 14-JUL-10 02:55:00 (CST-6)
Location: ELLIOTT
Tornado F-scale: EF1
Property damage: 1.00M
Crop damage: 250.00K
Reported by: NWS Storm Survey

This tornado was embedded in a squall line which also produced large hail and a wide swath of damaging downburst winds. the most extreme tornado damage was observed at two farmsteads northwest of elliot and in the town of elliot where wooden quonset structures and large steel grain bins were violently crumpled and tossed in various directions. Peak winds estimated to 105 mph.

Thunderstorm Wind in CASS, NORTH DAKOTA
From 14-JUL-10 03:35:00 to 14-JUL-10 03:35:00 (CST-6)
Location: RIVERSIDE
Magnitude: 56.00 EG
Reported by: Trained Spotter

The strong winds knocked down numerous large trees and caused widespread shingle and roof damage to homes. Large cottonwood branches of three to four inches in diameter were blown onto the top of a vehicle. Numerous sections of wooden fencing were blown down.

Hail in BARNES, NORTH DAKOTA
From 14-JUL-10 03:45:00 to 14-JUL-10 03:47:00 (CST-6)
Location: NOME
Magnitude: 1.25 
Reported by: Public

This was the third severe thunderstorm to affect the area during a 12 hour period.