Thunderstorms developed in unstable air ahead of an approaching surface front.  Some of the storms downed trees and power lines and produced hail to half dollar size.

Hail in SHAWANO, WISCONSIN
From 28-MAY-12 14:17:00 to 28-MAY-12 14:17:00 (CST-6)
Location: SPLIT ROCK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail was observed by a spotter in Split Rock.

Hail in SHAWANO, WISCONSIN
From 28-MAY-12 14:25:00 to 28-MAY-12 14:25:00 (CST-6)
Location: TIGERTON
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar size hail fell in Tigerton.

Hail in WAUPACA, WISCONSIN
From 28-MAY-12 15:30:00 to 28-MAY-12 15:30:00 (CST-6)
Location: CLINTONVILLE
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Nickel size hail, torrential rain and wind gusts estimated at 45 mph were reported by a spotter in Clintonville as thunderstorms moved through the area.

Thunderstorm Wind in SHAWANO, WISCONSIN
From 28-MAY-12 14:15:00 to 28-MAY-12 14:15:00 (CST-6)
Location: SPLIT ROCK
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm wind gusts to at least 60 mph downed a pair of trees and several branches near Split Rock.

Thunderstorm Wind in SHAWANO, WISCONSIN
From 28-MAY-12 14:23:00 to 28-MAY-12 14:23:00 (CST-6)
Location: TIGERTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Thunderstorm wind gusts, estimated at 60 mph, downed a tree and several power lines in Tigerton.

Thunderstorm Wind in SHAWANO, WISCONSIN
From 28-MAY-12 14:48:00 to 28-MAY-12 14:48:00 (CST-6)
Location: THORNTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Thunderstorm winds, estimated at 65 mph, downed several trees northwest of Shawano.

Thunderstorm Wind in OUTAGAMIE, WISCONSIN
From 28-MAY-12 16:35:00 to 28-MAY-12 16:35:00 (CST-6)
Location: HORTONVILLE
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A spotter, southeast of Hortonville, reported a measured wind gust of 67 mph as thunderstorms moved through the area.

Hail in WOOD, WISCONSIN
From 28-MAY-12 14:30:00 to 28-MAY-12 14:30:00 (CST-6)
Location: NEKOOSA
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

A Skywarn spotter observed nickel size hail as thunderstorms moved through Nekoosa.

Hail in PORTAGE, WISCONSIN
From 28-MAY-12 13:35:00 to 28-MAY-12 13:35:00 (CST-6)
Location: PARK RIDGE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter size hail was reported at Stevens Point.  The time of this event was estimated based on radar data.

Hail in WAUPACA, WISCONSIN
From 28-MAY-12 13:45:00 to 28-MAY-12 13:45:00 (CST-6)
Location: CLINTONVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny size hail was observed by a spotter in Clintonville.

Thunderstorm Wind in MARINETTE, WISCONSIN
From 28-MAY-12 14:00:00 to 28-MAY-12 14:10:00 (CST-6)
Location: CRIVITZ
Magnitude: 56.00 EG
Crop damage: 0.00K
Reported by: Public

Wind gusts estimated at 65 mph downed trees and power lines in Crivitz between 3:00 pm CDT and 3:10 pm CDT.