Thunderstorms developed across western Minnesota the afternoon of Tuesday, August 16th.  These thunderstorms continued to develop eastward across central Minnesota, and into east central Minnesota, and west central Wisconsin. A few of the thunderstorms began to train across central and east central Minnesota, mainly between St. Cloud and the northern suburbs of the Twin Cities during the late afternoon and evening hours. Rainfall amounts were in excess of 1 to 2 inches, with locally two to four inches across the northern portions of the Twin Cities. Some areas had significant street flooding and several roads were closed during the height of the storm.

Heavy Rain in ANOKA, MINNESOTA
From 16-AUG-11 18:00:00 to 16-AUG-11 22:00:00 (CST-6)
Location: FRIDLEY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Employee

An off duty Meteorologist measured 3.21 inches of rainfall in the past four hours.

Flash Flood in ANOKA, MINNESOTA
From 16-AUG-11 18:30:00 to 16-AUG-11 21:00:00 (CST-6)
Location: LEXINGTON
Flood cause: Heavy Rain
Property damage: 500.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Due to excessive runoff from heavy rainfall, the intersection of Highway 65 and 81st Street in Spring Lake Park, Minnesota, was impassable. Also, significant flooding was reported along University Avenue between Osborne, and 73rd Street, and west of the Northtown Shopping Center.

Flash Flood in HENNEPIN, MINNESOTA
From 16-AUG-11 18:00:00 to 16-AUG-11 21:00:00 (CST-6)
Location: CRYSTAL ARPT
Flood cause: Heavy Rain
Property damage: 250.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Due to excessive runoff from very heavy rainfall, significant street flooding occurred near Brooklyn Blvd, and Regent Avenue.  Several of the smaller creeks in the area also had flooded and were out of their banks. Several residential streets were also flooded near Osseo, Minnesota. Plus, several homes around 75th Street and Kentucky Avenue in Brooklyn Park, Minnesota had flood waters reach the first floor of their houses.

Flash Flood in MILLE LACS, MINNESOTA
From 16-AUG-11 17:00:00 to 16-AUG-11 18:00:00 (CST-6)
Location: ESTES BROOK
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Excessive rainfall washed out a culvert near the intersection of County Road 6, and 55th Street.

Flash Flood in RAMSEY, MINNESOTA
From 16-AUG-11 20:00:00 to 16-AUG-11 21:00:00 (CST-6)
Location: NEW BRIGHTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

The ramp for the westbound traffic of 694, to northbound 35W was closed due to flooding.

Heavy Rain in WRIGHT, MINNESOTA
From 16-AUG-11 15:45:00 to 16-AUG-11 17:45:00 (CST-6)
Location: WAVERLY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 2.10 inches of rainfall in the past two hours.

Heavy Rain in RAMSEY, MINNESOTA
From 16-AUG-11 18:10:00 to 17-AUG-11 00:10:00 (CST-6)
Location: NORTH ST PAUL
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 2.50 inches of rainfall in the past six hours.

Heavy Rain in HENNEPIN, MINNESOTA
From 16-AUG-11 18:35:00 to 16-AUG-11 21:35:00 (CST-6)
Location: BROOKLYN PARK
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 2.20 inches of rainfall in the past three hours.