A cold front moved southeast across eastern Minnesota, and western Wisconsin during the late afternoon, and evening of Saturday, July 18th. Along this front, a line of severe thunderstorms develop which initially was producing large hail, but became tornadic during the evening in parts of the eastern Twin Cities metro area.

Tornado in WASHINGTON, MINNESOTA
From 18-JUL-20 20:54:00 to 18-JUL-20 21:00:00 (CST-6)
Location: COTTAGE GROVE
Tornado F-scale: EF1
Property damage: 100.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A NWS Storm Survey indicated that an EF1 tornado occurred in far southern Washington County, in a rural area, north of Hastings, Minnesota.
The tornado spun up 5 miles north of Hastings, Minnesota, and tracked eastward for 3.2 miles until it moved across the St. Croix River, and into Wisconsin.  Extensive tree damage occurred along its path, with the heaviest damage on top of the bluff as it moved across the St. Croix River into Wisconsin. A few farm outbuildings were also damaged. The tornado had a maximum speed of 100 mph, with a maximum width of 400 yards.

Tornado in WASHINGTON, MINNESOTA
From 18-JUL-20 20:42:00 to 18-JUL-20 20:51:00 (CST-6)
Location: WOODBURY
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado damaged about one dozen trees, soffit was ripped off a house, a semi was tipped over, and about six greenhouse hoops were damaged.

Hail in ANOKA, MINNESOTA
From 18-JUL-20 16:50:00 to 18-JUL-20 16:50:00 (CST-6)
Location: HAM LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in ANOKA, MINNESOTA
From 18-JUL-20 17:00:00 to 18-JUL-20 17:00:00 (CST-6)
Location: BLAINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in ANOKA, MINNESOTA
From 18-JUL-20 17:10:00 to 18-JUL-20 17:10:00 (CST-6)
Location: COLUMBUS
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in WASHINGTON, MINNESOTA
From 18-JUL-20 17:12:00 to 18-JUL-20 17:12:00 (CST-6)
Location: FOREST LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in ANOKA, MINNESOTA
From 18-JUL-20 17:18:00 to 18-JUL-20 17:18:00 (CST-6)
Location: COLUMBUS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, MINNESOTA
From 18-JUL-20 17:20:00 to 18-JUL-20 17:20:00 (CST-6)
Location: FOREST LAKE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, MINNESOTA
From 18-JUL-20 17:23:00 to 18-JUL-20 17:23:00 (CST-6)
Location: FOREST LAKE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in WASHINGTON, MINNESOTA
From 18-JUL-20 17:35:00 to 18-JUL-20 17:35:00 (CST-6)
Location: SCANDIA
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WASHINGTON, MINNESOTA
From 18-JUL-20 17:35:00 to 18-JUL-20 17:35:00 (CST-6)
Location: SCANDIA
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm Wind in ANOKA, MINNESOTA
From 18-JUL-20 16:55:00 to 18-JUL-20 16:55:00 (CST-6)
Location: LEXINGTON
Magnitude: 63.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A large tree and two large branches were blown down near the intersection of 99th Avenue NE and Polk St NE, a few blocks east of Cloverleaf Park. Damage was much too scant to make any determination beyond thunderstorm wind damage.