Severe thunderstorms that moved across northeast Minnesota produced up to hen egg sized hail, damaging winds, and heavy rainfall that caused flooding.

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 15:00:00 to 14-SEP-17 15:00:00 (CST-6)
Location: NETT LAKE
Magnitude: 1.75 
Reported by: Public

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 15:00:00 to 14-SEP-17 15:00:00 (CST-6)
Location: CRANE LAKE
Magnitude: 2.00 
Reported by: Public

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 15:01:00 to 14-SEP-17 15:01:00 (CST-6)
Location: NETT LAKE
Magnitude: 1.75 
Reported by: Public

Hail in ITASCA, MINNESOTA
From 14-SEP-17 15:12:00 to 14-SEP-17 15:12:00 (CST-6)
Location: EFFIE
Magnitude: 0.88 
Reported by: Public

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 16:34:00 to 14-SEP-17 16:48:00 (CST-6)
Location: BRITT
Magnitude: 1.75 
Reported by: Trained Spotter

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:08:00 to 14-SEP-17 17:08:00 (CST-6)
Location: EMBARRASS
Magnitude: 0.75 
Reported by: COOP Observer

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:10:00 to 14-SEP-17 17:10:00 (CST-6)
Location: BIWABIK
Magnitude: 1.00 
Reported by: Public

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:14:00 to 14-SEP-17 17:19:00 (CST-6)
Location: MAKINEN
Magnitude: 1.00 
Reported by: Trained Spotter

Thunderstorm Wind in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:33:00 to 14-SEP-17 17:33:00 (CST-6)
Location: CENTRAL LAKES
Magnitude: 50.00 EG
Reported by: Amateur Radio

A few trees measuring three to four inches in diameter were knocked down and blocked the south bound side of United States Highway 53 near Murphy Lake Road.

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:35:00 to 14-SEP-17 17:35:00 (CST-6)
Location: CENTRAL LAKES
Magnitude: 0.75 
Reported by: Public

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:35:00 to 14-SEP-17 17:35:00 (CST-6)
Location: MAKINEN
Magnitude: 1.00 
Reported by: Trained Spotter

Hail in ST. LOUIS, MINNESOTA
From 14-SEP-17 17:38:00 to 14-SEP-17 17:38:00 (CST-6)
Location: CENTRAL LAKES
Magnitude: 1.50 
Reported by: Amateur Radio

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: MARKHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

County Road 338 south of Town Line Road was closed due to flooding over the road.

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: MARKHAM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Flooding of the Water Hen Creek closed traffic access to Wilson Road.

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: POLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

County Road 344 south of Town Line Road was closed due to flooding of Water Hen Creek.

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: POLO
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

County State Aid Highway 99 was closed from Town Line Road north to County Road 343 due to flooding from Water Hen Creek.

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: MAKINEN
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

County Road 607/331 was closed east of Long Lake Road due to flooding.

Flash Flood in ST. LOUIS, MINNESOTA
From 14-SEP-17 22:00:00 to 14-SEP-17 22:00:00 (CST-6)
Location: CENTRAL LAKES
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

Water was over the roadway at Old Highway 53.