During the late afternoon, and early evening of Thursday, June 17th, thunderstorms began to develop along an outflow boundary from earlier convection across far southern Minnesota. The storms developed in an area of ample instability and wind shear of 40 to 50 knots across southern Minnesota, and into west-central Wisconsin. The first storm developed across northwest Le Sueur County and moved east-northeast across southern Scott, and northern le Sueur County. The city of Lonsdale received hail that measured up to 2.5 inches in diameter. Other hail between an inch, and up to 2 inches in diameter fell along the Scott/Le Sueur County border, eastward toward northern Rice and southern Dakota Counties, and into Goodhue County. Some of the storms deviated well southeast across Goodhue County and produced the largest hailstones of 3 inches in diameter near Cannon Falls. Eventually, other storms developed across southern Minnesota, and moved eastward into west central Wisconsin.
There was an estimated 150 houses that were exposed to the 2 hail or greater. An estimate of 1,000 houses were exposed to 1.5 hail or greater. Based on total and partial roof replacement, the total damages to this hailstorm was approximately 5.5 million dollars.

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 19:15:00 to 17-JUN-21 19:15:00 (CST-6)
Location: WASTEDO
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail was measured and was the second wave of large hail within an hour.

Hail in DAKOTA, MINNESOTA
From 17-JUN-21 18:55:00 to 17-JUN-21 18:55:00 (CST-6)
Location: NORTHFIELD
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in NICOLLET, MINNESOTA
From 17-JUN-21 19:05:00 to 17-JUN-21 19:05:00 (CST-6)
Location: NEW SWEDEN
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 19:08:00 to 17-JUN-21 19:08:00 (CST-6)
Location: STANTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in RICE, MINNESOTA
From 17-JUN-21 18:05:00 to 17-JUN-21 18:05:00 (CST-6)
Location: WEBSTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Social media had a picture of golf ball size hail near Webster.

Hail in RICE, MINNESOTA
From 17-JUN-21 18:08:00 to 17-JUN-21 18:08:00 (CST-6)
Location: LONSDALE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in RICE, MINNESOTA
From 17-JUN-21 18:09:00 to 17-JUN-21 18:09:00 (CST-6)
Location: WEBSTER
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Social media had a picture of tennis ball size hail in Webster.

Hail in RICE, MINNESOTA
From 17-JUN-21 18:10:00 to 17-JUN-21 18:10:00 (CST-6)
Location: LONSDALE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in LE SUEUR, MINNESOTA
From 17-JUN-21 17:49:00 to 17-JUN-21 17:49:00 (CST-6)
Location: NEW PRAGUE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Social media had a picture of golf ball size hail near new Prague.

Hail in RICE, MINNESOTA
From 17-JUN-21 18:11:00 to 17-JUN-21 18:12:00 (CST-6)
Location: LONSDALE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Thunderstorm Wind in RICE, MINNESOTA
From 17-JUN-21 18:19:00 to 17-JUN-21 18:19:00 (CST-6)
Location: NORTHFIELD
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in RICE, MINNESOTA
From 17-JUN-21 17:59:00 to 17-JUN-21 17:59:00 (CST-6)
Location: LONSDALE
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Hail in SCOTT, MINNESOTA
From 17-JUN-21 18:04:00 to 17-JUN-21 18:04:00 (CST-6)
Location: ELKO NEW MARKET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:35:00 to 17-JUN-21 18:35:00 (CST-6)
Location: WANGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:30:00 to 17-JUN-21 18:30:00 (CST-6)
Location: STANTON
Magnitude: 3.00 
Property damage: 3.00M
Crop damage: 0.00K
Reported by: Trained Spotter

Hailstone was measured and emailed to the weather service. The hail stone was 3 inches in diameter and fell east of Stanton.

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:30:00 to 17-JUN-21 18:30:00 (CST-6)
Location: CANNON FALLS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Social media had a picture of 2 inch diameter hail south of Cannon Falls.

Hail in DAKOTA, MINNESOTA
From 17-JUN-21 18:33:00 to 17-JUN-21 18:33:00 (CST-6)
Location: RANDOLPH
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

The hailstone fell east of Stanton on Highway 19.

Hail in RICE, MINNESOTA
From 17-JUN-21 18:11:00 to 17-JUN-21 18:11:00 (CST-6)
Location: LITTLE CHICAGO
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Willingers golf course reported golf ball size hail near North Chicago.

Hail in SCOTT, MINNESOTA
From 17-JUN-21 18:15:00 to 17-JUN-21 18:15:00 (CST-6)
Location: BELLE PLAINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in RICE, MINNESOTA
From 17-JUN-21 18:20:00 to 17-JUN-21 18:20:00 (CST-6)
Location: NORTHFIELD
Magnitude: 2.75 
Property damage: 2.50M
Crop damage: 0.00K
Reported by: Trained Spotter

Baseball size hail was reported east of Northfield. The trained spotter emailed the picture of the large hail stone.

Hail in DAKOTA, MINNESOTA
From 17-JUN-21 18:26:00 to 17-JUN-21 18:26:00 (CST-6)
Location: LAKEVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in SCOTT, MINNESOTA
From 17-JUN-21 18:10:00 to 17-JUN-21 18:10:00 (CST-6)
Location: ELKO NEW MARKET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in DAKOTA, MINNESOTA
From 17-JUN-21 18:30:00 to 17-JUN-21 18:30:00 (CST-6)
Location: LAKEVILLE AIRLAKE AR
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:51:00 to 17-JUN-21 18:51:00 (CST-6)
Location: STANTON CARLETON ARP
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:53:00 to 17-JUN-21 18:53:00 (CST-6)
Location: GOODHUE
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in LE SUEUR, MINNESOTA
From 17-JUN-21 17:40:00 to 17-JUN-21 17:40:00 (CST-6)
Location: ST THOMAS
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Social media had a picture of 2 inch hail in northern Le Sueur County.

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:35:00 to 17-JUN-21 18:35:00 (CST-6)
Location: SOGN
Magnitude: 3.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There was 3 inch diameter hail that fell south of Cannon Falls. Buildings and vehicles were damaged in the area.

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:35:00 to 17-JUN-21 18:35:00 (CST-6)
Location: CANNON FALLS
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:37:00 to 17-JUN-21 18:37:00 (CST-6)
Location: STANTON CARLETON ARP
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:35:00 to 17-JUN-21 18:35:00 (CST-6)
Location: CANNON FALLS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:37:00 to 17-JUN-21 18:37:00 (CST-6)
Location: STANTON
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:40:00 to 17-JUN-21 18:40:00 (CST-6)
Location: WHITE ROCK
Magnitude: 2.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There was baseball size hail that fell along County Road 25, southeast of Cannon Falls.

Hail in SCOTT, MINNESOTA
From 17-JUN-21 18:40:00 to 17-JUN-21 18:40:00 (CST-6)
Location: ELKO NEW MARKET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in GOODHUE, MINNESOTA
From 17-JUN-21 18:37:00 to 17-JUN-21 18:37:00 (CST-6)
Location: SOGN
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser