Thunderstorms moved through Wisconsin in very warm and unstable air ahead of a cold front.  Severe thunderstorm winds and tornadoes downed trees and power lines and damaged buildings across a large swath of central, north central and east central Wisconsin.  Thousands of trees and power lines were downed by high winds from the storms.  An 11 year old Boy Scout was killed and another was seriously injured when trees landed on their tent at Camp Napowan (Waushara co.).High winds pushed a house off its foundation and blew a boat and trailer into a neighbor's yard near Merrill (Lincoln co.).  Some downed trees damaged or destroyed buildings or vehicles when they fell.  A church steeple was toppled by high winds and a tree landed on an SUV, boat and trailer in Neenah (Winnebago co.)  According to utility company news releases, nearly 20,000 customers were without power at some time during the storms.  As of noon the next day there were still about 3,250 customers in the Green Bay (Brown co.) area without electricity.The hardest hit areas appeared to be in Marathon, Lincoln, Shawano and Oconto counties.  Three of the four confirmed tornadoes touched down in Lincoln county and the other touched down in Marathon county.   A tornado that touched down 5 miles north of Merrill (Lincoln co.) skipped along the ground for 9 miles, destroying a barn and another structure, tearing roofs from some buildings and moving others from their foundations.  Another tornado briefly touched down about 8.5 miles northeast of Merrill demolishing a mobile home and snapping trees and tree limbs.  The other Lincoln county tornado touched down 10 miles northwest of Merrill and skipped along the ground for 1.25 miles.  A tornado skipped along the ground for 2 miles in Mosinee (Marathon co.) causing significant tree damage on a hill east of the Wisconsin River.

Thunderstorm Wind in MARATHON, WISCONSIN
From 30-JUL-02 17:48:00 to 30-JUL-02 17:50:00 (CST)
Location: SPENCER
Magnitude: 60 E
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in WAUSHARA, WISCONSIN
From 30-JUL-02 19:45:00 to 30-JUL-02 19:45:00 (CST)
Location: SAXEVILLE
Magnitude: 52 M
Reported by: AMATEUR RADIO

Thunderstorm Wind in MARATHON, WISCONSIN
From 30-JUL-02 18:24:00 to 30-JUL-02 18:26:00 (CST)
Location: WAUSAU ARPT
Magnitude: 52 M
Reported by: AWOS,ASOS,MESONET,ETC

Tornado in MARATHON, WISCONSIN
From 30-JUL-02 18:22:00 to 30-JUL-02 18:28:00 (CST)
Location: (CWA)CEN WI ARPT MOS
Tornado F-scale: F0
Reported by: FIRE DEPT/RESCUE SQUAD

Thunderstorm Wind in WAUSHARA, WISCONSIN
From 30-JUL-02 19:20:00 to 30-JUL-02 19:20:00 (CST)
Location: COLOMA
Magnitude: 50 E
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in WAUSHARA, WISCONSIN
From 30-JUL-02 19:28:00 to 30-JUL-02 19:30:00 (CST)
Location: WAUTOMA
Magnitude: 55 E
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in PORTAGE, WISCONSIN
From 30-JUL-02 18:45:00 to 30-JUL-02 18:45:00 (CST)
Location: STEVENS PT
Magnitude: 50 E
Reported by: LAW ENFORCEMENT

Tornado in LINCOLN, WISCONSIN
From 30-JUL-02 18:08:00 to 30-JUL-02 18:28:00 (CST)
Location: MERRILL
Tornado F-scale: F0
Property damage: 100K
Reported by: NWS STORM SURVEY

Tornado in LINCOLN, WISCONSIN
From 30-JUL-02 17:47:00 to 30-JUL-02 17:50:00 (CST)
Location: MERRILL
Tornado F-scale: F0
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in DOOR, WISCONSIN
From 30-JUL-02 20:45:00 to 30-JUL-02 20:55:00 (CST)
Location: ELLISON BAY
Magnitude: 55 E
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in MARINETTE, WISCONSIN
From 30-JUL-02 20:35:00 to 30-JUL-02 20:55:00 (CST)
Location: COLEMAN
Magnitude: 50 E
Reported by: EMERGENCY MANAGER

Hail in LINCOLN, WISCONSIN
From 30-JUL-02 18:52:00 to 30-JUL-02 18:52:00 (CST)
Location: TOMAHAWK
Magnitude: 1.00 
Reported by: LAW ENFORCEMENT

Hail in DOOR, WISCONSIN
From 30-JUL-02 20:10:00 to 30-JUL-02 20:10:00 (CST)
Location: STURGEON BAY
Magnitude: 1.00 
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in KEWAUNEE, WISCONSIN
From 30-JUL-02 20:15:00 to 30-JUL-02 20:40:00 (CST)
Location: COUNTYWIDE
Magnitude: 55 E
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 30-JUL-02 20:15:00 to 30-JUL-02 20:15:00 (CST)
Location: NEENAH
Magnitude: 56 M
Property damage: 60K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in OUTAGAMIE, WISCONSIN
From 30-JUL-02 20:13:00 to 30-JUL-02 20:13:00 (CST)
Location: KIMBERLY
Magnitude: 50 E
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in WINNEBAGO, WISCONSIN
From 30-JUL-02 20:00:00 to 30-JUL-02 20:00:00 (CST)
Location: WINNECONNE
Magnitude: 57 M
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in CALUMET, WISCONSIN
From 30-JUL-02 20:10:00 to 30-JUL-02 20:10:00 (CST)
Location: SHERWOOD
Magnitude: 57 M
Reported by: TRAINED SPOTTER

Thunderstorm Wind in MANITOWOC, WISCONSIN
From 30-JUL-02 20:55:00 to 30-JUL-02 20:55:00 (CST)
Location: MANITOWOC
Magnitude: 50 E
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in OCONTO, WISCONSIN
From 30-JUL-02 19:25:00 to 30-JUL-02 19:55:00 (CST)
Location: SURING
Magnitude: 60 E
Property damage: 75K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in LINCOLN, WISCONSIN
From 30-JUL-02 18:10:00 to 30-JUL-02 18:15:00 (CST)
Location: MERRILL
Magnitude: 60 E
Property damage: 25K
Reported by: TRAINED SPOTTER

Thunderstorm Wind in MARATHON, WISCONSIN
From 30-JUL-02 18:00:00 to 30-JUL-02 18:00:00 (CST)
Location: EDGAR
Magnitude: 50 E
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in BROWN, WISCONSIN
From 30-JUL-02 19:50:00 to 30-JUL-02 20:15:00 (CST)
Location: COUNTYWIDE
Magnitude: 50 E
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in MENOMINEE (C), WISCONSIN
From 30-JUL-02 18:58:00 to 30-JUL-02 19:13:00 (CST)
Location: COUNTYWIDE
Magnitude: 55 E
Reported by: LAW ENFORCEMENT

Tornado in LINCOLN, WISCONSIN
From 30-JUL-02 18:25:00 to 30-JUL-02 18:25:00 (CST)
Location: MERRILL
Tornado F-scale: F0
Property damage: 5K
Reported by: NWS STORM SURVEY

Thunderstorm Wind in LINCOLN, WISCONSIN
From 30-JUL-02 18:20:00 to 30-JUL-02 18:23:00 (CST)
Location: GLEASON
Magnitude: 50 E
Property damage: 25K
Reported by: LAW ENFORCEMENT

Thunderstorm Wind in SHAWANO, WISCONSIN
From 30-JUL-02 18:50:00 to 30-JUL-02 19:38:00 (CST)
Location: COUNTYWIDE
Magnitude: 55 E
Property damage: 100K
Reported by: EMERGENCY MANAGER

Hail in LINCOLN, WISCONSIN
From 30-JUL-02 18:13:00 to 30-JUL-02 18:13:00 (CST)
Location: IRMA
Magnitude: 0.75 
Reported by: TRAINED SPOTTER

Thunderstorm Wind in LANGLADE, WISCONSIN
From 30-JUL-02 18:35:00 to 30-JUL-02 18:35:00 (CST)
Location: ANTIGO
Magnitude: 50 E
Reported by: LAW ENFORCEMENT