The 16th was hot and humid with late afternoon temperatures topping out in the 80s to around 90 and dew point temperatures well into the 70s. This created a large amount of instability. By early in the evening, thunderstorms began to flare up again aided by a weak low level jet.

Flash Flood in KITTSON, MINNESOTA
From 16-JUL-11 21:15:00 to 17-JUL-11 04:00:00 (CST-6)
Location: KARLSTAD
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 5.00K
Reported by: Amateur Radio

Street flooding was reported in Karlstad after 3.95 inches of rain fell.

Hail in KITTSON, MINNESOTA
From 16-JUL-11 20:06:00 to 16-JUL-11 20:06:00 (CST-6)
Location: KARLSTAD
Magnitude: 0.75 
Reported by: Amateur Radio

Hail in BELTRAMI, MINNESOTA
From 17-JUL-11 01:35:00 to 17-JUL-11 01:35:00 (CST-6)
Location: BLACKDUCK
Magnitude: 1.00 
Reported by: Trained Spotter

A few dime to quarter sized hailstones fell along with heavy rain and very strong winds.

Hail in KITTSON, MINNESOTA
From 16-JUL-11 20:10:00 to 16-JUL-11 20:10:00 (CST-6)
Location: KARLSTAD
Magnitude: 1.00 
Reported by: Trained Spotter

The hail was mostly pea sized, but there were a few quarters mixed in.

Hail in ROSEAU, MINNESOTA
From 16-JUL-11 21:28:00 to 16-JUL-11 21:28:00 (CST-6)
Location: STRATHCONA
Magnitude: 1.00 
Reported by: Trained Spotter

A deck was covered with quarter sized hail. There were a few bigger ones, but not as large as half dollars.

Thunderstorm Wind in KITTSON, MINNESOTA
From 16-JUL-11 21:57:00 to 16-JUL-11 21:57:00 (CST-6)
Location: HALLOCK ARPT
Magnitude: 53.00 MG
Reported by: AWOS

Hail in BELTRAMI, MINNESOTA
From 17-JUL-11 01:20:00 to 17-JUL-11 01:20:00 (CST-6)
Location: BLACKDUCK
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in BELTRAMI, MINNESOTA
From 17-JUL-11 01:20:00 to 17-JUL-11 01:20:00 (CST-6)
Location: BLACKDUCK
Magnitude: 61.00 EG
Reported by: Trained Spotter

A spotter reported 70 mph winds west of Blackduck.

Hail in BELTRAMI, MINNESOTA
From 17-JUL-11 00:15:00 to 17-JUL-11 00:15:00 (CST-6)
Location: THORHULT
Magnitude: 1.00 
Reported by: Public

Hail in KITTSON, MINNESOTA
From 16-JUL-11 19:10:00 to 16-JUL-11 19:10:00 (CST-6)
Location: DONALDSON
Magnitude: 1.25 
Reported by: Public

Tornado in MARSHALL, MINNESOTA
From 16-JUL-11 19:25:00 to 16-JUL-11 19:26:00 (CST-6)
Location: STEPHEN ARPT
Tornado F-scale: EF0
Reported by: Fire Department/Rescue

A brief touchdown with dust swirl was noted in a open field. Peak winds were estimated at 70 mph.

Funnel Cloud in ROSEAU, MINNESOTA
From 16-JUL-11 20:30:00 to 16-JUL-11 20:30:00 (CST-6)
Location: STRATHCONA
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Two brief funnels were noted west and southwest from highway 32 along the Roseau and Marshall county line.

Flash Flood in ROSEAU, MINNESOTA
From 16-JUL-11 21:30:00 to 17-JUL-11 04:00:00 (CST-6)
Location: STRATHCONA
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 5.00K
Reported by: Law Enforcement

Street flooding was reported in Strathcona. Several farm access roads were also flooded near town.

Hail in MARSHALL, MINNESOTA
From 16-JUL-11 22:15:00 to 16-JUL-11 22:15:00 (CST-6)
Location: BIG WOODS
Magnitude: 1.00 
Reported by: Trained Spotter