Monday afternoon thunderstorms, and associated lightning strikes, caused damage to a home in Northfield. Another thunderstorm early Tuesday morning, and associated lightning strike,  caused damage to a home in Woodbury.
Isolated thunderstorms developed Monday evening in far southern Minnesota along an outflow boundary from earlier convection in Iowa. These storms became locally severe, producing occasional large hail near Waseca to Owatonna. Additional thunderstorms developed during the pre dawn hours around the Twin Cities, a few storms dropped up to ping pong size hail near Shoreview.

Hail in RAMSEY, MINNESOTA
From 16-MAY-17 04:42:00 to 16-MAY-17 04:47:00 (CST-6)
Location: SHOREVIEW
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A swath of large hail occurred between Shoreview and North Oaks where up to ping pong size hail was reported.

Hail in STEELE, MINNESOTA
From 15-MAY-17 21:08:00 to 15-MAY-17 21:25:00 (CST-6)
Location: HOPE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several reports of large hail occurred in Steele County between the southwest part of Owatonna, northeast to north of the Rice Lake State Park. The largest hail stone was golf ball size.

Hail in BLUE EARTH, MINNESOTA
From 15-MAY-17 21:13:00 to 15-MAY-17 21:13:00 (CST-6)
Location: PEMBERTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in WASECA, MINNESOTA
From 15-MAY-17 22:09:00 to 15-MAY-17 22:09:00 (CST-6)
Location: JANESVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in LE SUEUR, MINNESOTA
From 15-MAY-17 22:37:00 to 15-MAY-17 22:37:00 (CST-6)
Location: WATERVILLE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Hail in ANOKA, MINNESOTA
From 16-MAY-17 04:55:00 to 16-MAY-17 04:55:00 (CST-6)
Location: BLAINE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hail in ANOKA, MINNESOTA
From 16-MAY-17 05:05:00 to 16-MAY-17 05:05:00 (CST-6)
Location: EAST BETHEL
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in ANOKA, MINNESOTA
From 16-MAY-17 05:10:00 to 16-MAY-17 05:10:00 (CST-6)
Location: LINWOOD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Lightning in RICE, MINNESOTA
From 15-MAY-17 12:00:00 to 15-MAY-17 12:00:00 (CST-6)
Location: NORTHFIELD
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Lightning struck a home on the 1500 block of Lindberg Court Monday afternoon in Northfield. Northfield Area Fire and Rescue Service firefighters responded to the home around 1 p.m. Monday to extinguish the fire that started as a result of the strike.
The homeowner was inside the residence at the time of the strike, but no injuries were reported. Lightning struck the chimney liner on the roof, and followed that down to the mechanical room where it ignited storage items.
There was also smoke damage throughout the home.

Lightning in WASHINGTON, MINNESOTA
From 16-MAY-17 03:30:00 to 16-MAY-17 03:30:00 (CST-6)
Location: WOODBURY
Property damage: 450.00K
Crop damage: 0.00K
Reported by: Newspaper

A home in Woodbury was struck by lightning and caused enough damage to make the home unlivable. No injuries were reported as the homeowner was not at home.