A tight pressure gradient between low pressure over Ohio and a ridge of high pressure extending from North Dakota into Ontario, Canada, produced strong north to northeast winds over most of South-Central Wisconsin and Southeast Wisconsin. Daytime heating of dry air that had spread into the region with the leading edge of the high allowed mixing up to 40 to 45 knot winds about 5,000 feet above ground level. This mixing resulted in sustained winds of 30 to 35 mph and wind gusts up to 45 mph at the surface.  Scattered power-outages were reported due to broken tree branches falling on and snapping power-lines.

Strong Wind in GREEN, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 26.00 MS
Property damage: 5.00K
Reported by: AWOS

Strong Wind in WALWORTH, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: Trained Spotter

Strong Wind in RACINE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 40.00 MG
Property damage: 5.00K
Reported by: ASOS

Strong Wind in KENOSHA, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 30.00 MS
Property damage: 5.00K
Reported by: C-MAN Station

Strong Wind in FOND DU LAC, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: ASOS

Strong Wind in SHEBOYGAN, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: Mesonet

Strong Wind in SAUK, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 MG
Property damage: 5.00K
Reported by: ASOS

Strong Wind in COLUMBIA, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Strong Wind in DODGE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 40.00 MG
Property damage: 5.00K
Reported by: AWOS

Strong Wind in WASHINGTON, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: Trained Spotter

Strong Wind in OZAUKEE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 MG
Property damage: 5.00K
Reported by: C-MAN Station

Strong Wind in IOWA, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 40.00 MG
Property damage: 5.00K
Reported by: AWOS

Strong Wind in DANE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 MG
Property damage: 5.00K
Reported by: ASOS

Strong Wind in JEFFERSON, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 32.00 MS
Property damage: 5.00K
Reported by: Official NWS Observations

Strong Wind in WAUKESHA, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 32.00 ES
Property damage: 5.00K
Reported by: Trained Spotter

Strong Wind in MILWAUKEE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 41.00 MG
Property damage: 5.00K
Reported by: ASOS

Strong Wind in LAFAYETTE, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 39.00 EG
Property damage: 5.00K
Reported by: Law Enforcement

Strong Wind in ROCK, WISCONSIN
From 15-MAY-11 06:00:00 to 15-MAY-11 17:00:00 (CST-6)
Magnitude: 40.00 MG
Property damage: 5.00K
Reported by: AWOS