A strong spring storm system moved from the central Plains into the Great Lakes region on 2 April 2006.  A strong low level jet of 40-50 knots (46-58 mph) allowed thunderstorms to develop in the semi-moist atmosphere of the warm sector.  These storms rapidly developed into a squall line that raced northeast across far northeast Missouri, southeast Iowa, and west central Illinois.  The storms were prolific non-severe hail producers while at the same time producing severe hail.  Eight tornadoes were produced across southeast Iowa and west central Illinois by this squall line.  A second squall line developed along the occluded front in eastern Iowa and moved northeast into northwest Illinois producing some wind and hail damage.

Hail in HENDERSON, ILLINOIS
From 02-APR-06 16:36:00 to 02-APR-06 16:36:00 (CST)
Location: OQUAWKA
Magnitude: 1.00 
Property damage: 5K
Reported by: EMERGENCY MANAGER

Also reported by a spotter; nickel to quarter size hail covering the ground.

Funnel Cloud in HANCOCK, ILLINOIS
From 02-APR-06 15:47:00 to 02-APR-06 15:48:00 (CST)
Location: HAMILTON
Reported by: TRAINED SPOTTER

Funnel cloud north of Hamilton

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 02-APR-06 16:20:00 to 02-APR-06 16:20:00 (CST)
Location: COLMAR
Magnitude: 65 EG
Property damage: 12K
Reported by: TRAINED SPOTTER

A trailer was ripped from its foundation and a shed roof was ripped off.  The location is 0.5 miles east of Plymouth and just east of the Hancock/McDonough county line.

Hail in HANCOCK, ILLINOIS
From 02-APR-06 16:15:00 to 02-APR-06 16:15:00 (CST)
Location: DALLAS CITY
Magnitude: 1.00 
Property damage: 5K
Reported by: TRAINED SPOTTER

Hail in HENDERSON, ILLINOIS
From 02-APR-06 16:14:00 to 02-APR-06 16:14:00 (CST)
Location: CARMAN
Magnitude: 1.00 
Property damage: 3K
Reported by: EMERGENCY MANAGER

Emergency manager also reported estimated 43 knot (50 mph) winds.

Hail in MCDONOUGH, ILLINOIS
From 02-APR-06 16:30:00 to 02-APR-06 16:30:00 (CST)
Location: BLANDINSVILLE
Magnitude: 1.75 
Property damage: 10K
Reported by: BROADCAST MEDIA

Relayed by media

Heavy Rain in MCDONOUGH, ILLINOIS
From 02-APR-06 21:45:00 to 02-APR-06 23:50:00 (CST)
Location: MACOMB
Reported by: GENERAL PUBLIC

Street flooding at the intersection of Adams and Charles streets.

Hail in MCDONOUGH, ILLINOIS
From 02-APR-06 16:31:00 to 02-APR-06 16:32:00 (CST)
Location: MACOMB
Magnitude: 0.88 
Property damage: .5K
Reported by: GENERAL PUBLIC

On WIU campus.

Hail in WARREN, ILLINOIS
From 02-APR-06 16:45:00 to 02-APR-06 16:45:00 (CST)
Location: ROSEVILLE
Magnitude: 0.88 
Property damage: .5K
Reported by: EMERGENCY MANAGER

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 02-APR-06 16:40:00 to 02-APR-06 16:40:00 (CST)
Location: BUSHNELL
Magnitude: 65 EG
Property damage: 20K
Reported by: NWS STORM SURVEY

NWS survey found numerous trees and power lines down with several poles snapped.  Several houses and trailers on the southeast side of town had minor roof and siding damage.  Major damage was sustained to one mobile home and a metal pole barn.  Winds were estimated at 61-70 knots (70-80 mph).

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 02-APR-06 16:30:00 to 02-APR-06 16:35:00 (CST)
Location: INDUSTRY
Magnitude: 61 EG
Property damage: 4K
Reported by: TRAINED SPOTTER

Two foot diameter pine trees uprooted with shingles off a house and garage.  A basketball stand was blown over onto an automobile causing damage.  Power lines and a privacy fence were downed.

Thunderstorm Wind in WARREN, ILLINOIS
From 02-APR-06 16:45:00 to 02-APR-06 16:45:00 (CST)
Location: ROSEVILLE
Magnitude: 61 EG
Property damage: 2K
Reported by: EMERGENCY MANAGER

Trees down

Hail in HENDERSON, ILLINOIS
From 02-APR-06 16:16:00 to 02-APR-06 16:16:00 (CST)
Location: OQUAWKA
Magnitude: 0.88 
Reported by: EMERGENCY MANAGER

Hail in WARREN, ILLINOIS
From 02-APR-06 16:42:00 to 02-APR-06 16:42:00 (CST)
Location: SWAN CREEK
Magnitude: 0.88 
Reported by: TRAINED SPOTTER

Also estimated 35 knot (40 mph) winds.

Thunderstorm Wind in MCDONOUGH, ILLINOIS
From 02-APR-06 16:40:00 to 02-APR-06 16:40:00 (CST)
Location: BUSHNELL
Magnitude: 65 EG
Property damage: 15K
Reported by: LAW ENFORCEMENT

Law enforcement reported 6 poles and wires down on highway 41 between Bushnell and Adair.  NWS survey estimates winds of 61-70 knots (70-80 mph).

Hail in CARROLL, ILLINOIS
From 02-APR-06 17:55:00 to 02-APR-06 17:55:00 (CST)
Location: MT CARROLL
Magnitude: 0.88 
Property damage: .5K
Reported by: GENERAL PUBLIC