As a shortwave approached southern Wisconsin during the afternoon, it interacted with unstable conditions to produce scattered clusters of severe thunderstorms that dumped large hail up to the size of golf balls, and produced isolated downburst winds that pulled down trees and power lines.  Steep lapse rates and cold air aloft allowed for hail formation within the storms.  A funnel cloud was observed near Milwaukee General Mitchell International Airport (Milwaukee Co.) around 1501CST, and another one over the city of Racine (Racine Co.) around 1525CST.

Hail in RACINE, WISCONSIN
From 17-MAY-06 15:05:00 to 17-MAY-06 15:05:00 (CST)
Location: RACINE
Magnitude: 0.88 
Reported by: AMATEUR RADIO

Hail in RACINE, WISCONSIN
From 17-MAY-06 15:05:00 to 17-MAY-06 15:05:00 (CST)
Location: RACINE
Magnitude: 0.88 
Reported by: AMATEUR RADIO

Funnel Cloud in RACINE, WISCONSIN
From 17-MAY-06 15:25:00 to 17-MAY-06 15:25:00 (CST)
Location: RACINE
Reported by: FIRE DEPT/RESCUE SQUAD

Hail in WALWORTH, WISCONSIN
From 17-MAY-06 15:26:00 to 17-MAY-06 15:35:00 (CST)
Location: DARIEN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in RACINE, WISCONSIN
From 17-MAY-06 15:45:00 to 17-MAY-06 15:45:00 (CST)
Location: RACINE
Magnitude: 0.75 
Property damage: 3K
Reported by: GENERAL PUBLIC

Wind driven hail dented cars and siding.

Hail in FOND DU LAC, WISCONSIN
From 17-MAY-06 14:31:00 to 17-MAY-06 14:31:00 (CST)
Location: WAUPUN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in JEFFERSON, WISCONSIN
From 17-MAY-06 13:15:00 to 17-MAY-06 13:15:00 (CST)
Location: WATERLOO
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DODGE, WISCONSIN
From 17-MAY-06 14:44:00 to 17-MAY-06 14:44:00 (CST)
Location: WAUPUN
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in ROCK, WISCONSIN
From 17-MAY-06 15:01:00 to 17-MAY-06 15:10:00 (CST)
Location: JANESVILLE
Magnitude: 52 EG
Reported by: LAW ENFORCEMENT

Trees and powerlines down.

Hail in ROCK, WISCONSIN
From 17-MAY-06 15:05:00 to 17-MAY-06 15:05:00 (CST)
Location: MILTON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in WAUKESHA, WISCONSIN
From 17-MAY-06 15:05:00 to 17-MAY-06 15:05:00 (CST)
Location: HARTLAND
Magnitude: 1.00 
Reported by: GENERAL PUBLIC

Hail in FOND DU LAC, WISCONSIN
From 17-MAY-06 13:40:00 to 17-MAY-06 13:40:00 (CST)
Location: EDEN
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in WASHINGTON, WISCONSIN
From 17-MAY-06 14:48:00 to 17-MAY-06 14:48:00 (CST)
Location: GERMANTOWN
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in OZAUKEE, WISCONSIN
From 17-MAY-06 14:05:00 to 17-MAY-06 14:05:00 (CST)
Location: FREDONIA
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DANE, WISCONSIN
From 17-MAY-06 14:25:00 to 17-MAY-06 14:30:00 (CST)
Location: MADISON
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Funnel Cloud in MILWAUKEE, WISCONSIN
From 17-MAY-06 15:01:00 to 17-MAY-06 15:01:00 (CST)
Location: MILWAUKEE MTCHELL AR
Reported by: OFFICIAL NWS OBS.

Hail in WALWORTH, WISCONSIN
From 17-MAY-06 14:05:00 to 17-MAY-06 14:05:00 (CST)
Location: LAKE GENEVA
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in KENOSHA, WISCONSIN
From 17-MAY-06 14:18:00 to 17-MAY-06 14:18:00 (CST)
Location: TWIN LAKES
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in SHEBOYGAN, WISCONSIN
From 17-MAY-06 13:39:00 to 17-MAY-06 13:39:00 (CST)
Location: PLYMOUTH
Magnitude: 1.75 
Reported by: TRAINED SPOTTER

Hail in SHEBOYGAN, WISCONSIN
From 17-MAY-06 13:49:00 to 17-MAY-06 13:49:00 (CST)
Location: WALDO
Magnitude: 0.75 
Reported by: GENERAL PUBLIC

Hail in RACINE, WISCONSIN
From 17-MAY-06 15:48:00 to 17-MAY-06 15:48:00 (CST)
Location: WATERFORD
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in COLUMBIA, WISCONSIN
From 17-MAY-06 13:40:00 to 17-MAY-06 13:40:00 (CST)
Location: FRIESLAND
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DODGE, WISCONSIN
From 17-MAY-06 13:48:00 to 17-MAY-06 13:48:00 (CST)
Location: RANDOLPH
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in COLUMBIA, WISCONSIN
From 17-MAY-06 13:48:00 to 17-MAY-06 13:48:00 (CST)
Location: ARLINGTON
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in DANE, WISCONSIN
From 17-MAY-06 12:53:00 to 17-MAY-06 13:08:00 (CST)
Location: SUN PRAIRIE
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Hail in DANE, WISCONSIN
From 17-MAY-06 13:31:00 to 17-MAY-06 13:31:00 (CST)
Location: COTTAGE GROVE
Magnitude: 0.75 
Reported by: LAW ENFORCEMENT

Hail in DANE, WISCONSIN
From 17-MAY-06 13:58:00 to 17-MAY-06 13:58:00 (CST)
Location: DE FOREST
Magnitude: 1.75 
Reported by: TRAINED SPOTTER