A broken line of quasi-discrete storms intensified as it moved across the Mid Mississippi Valley into a destabilizing atmosphere. A relatively narrow plume of richer low level moisture characterized by upper 50's dew points moved north into southern Illinois. As an upper level storm system approached the region, cold temperatures aloft fostered hail growth in the stronger storms.

Hail in UNION, ILLINOIS
From 15-APR-11 16:23:00 to 15-APR-11 16:23:00 (CST-6)
Location: JONESBORO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in PULASKI, ILLINOIS
From 15-APR-11 16:28:00 to 15-APR-11 16:36:00 (CST-6)
Location: MOUND CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in PERRY, ILLINOIS
From 15-APR-11 16:34:00 to 15-APR-11 16:34:00 (CST-6)
Location: SUNFIELD
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JACKSON, ILLINOIS
From 15-APR-11 16:36:00 to 15-APR-11 16:36:00 (CST-6)
Location: BOSKYDELL
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in JACKSON, ILLINOIS
From 15-APR-11 16:40:00 to 15-APR-11 16:40:00 (CST-6)
Location: CARBONDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, ILLINOIS
From 15-APR-11 16:36:00 to 15-APR-11 16:40:00 (CST-6)
Location: SANDBURN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in ALEXANDER, ILLINOIS
From 15-APR-11 16:15:00 to 15-APR-11 16:15:00 (CST-6)
Location: FAYVILLE
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WILLIAMSON, ILLINOIS
From 15-APR-11 16:42:00 to 15-APR-11 16:42:00 (CST-6)
Location: WOLF CREEK
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in WILLIAMSON, ILLINOIS
From 15-APR-11 16:47:00 to 15-APR-11 16:53:00 (CST-6)
Location: CARTERVILLE
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A wind gust to 60 mph was measured at Marion. A trained spotter estimated a wind gust to 70 mph at Carterville.

Thunderstorm Wind in ALEXANDER, ILLINOIS
From 15-APR-11 16:30:00 to 15-APR-11 16:30:00 (CST-6)
Location: FAYVILLE
Magnitude: 52.00 MG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Tree limbs were blown down.

Thunderstorm Wind in UNION, ILLINOIS
From 15-APR-11 16:25:00 to 15-APR-11 16:25:00 (CST-6)
Location: ANNA
Magnitude: 52.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Newspaper

Trees were knocked down on a couple houses and vehicles.

Hail in WILLIAMSON, ILLINOIS
From 15-APR-11 16:49:00 to 15-APR-11 16:53:00 (CST-6)
Location: CARTERVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Hail in FRANKLIN, ILLINOIS
From 15-APR-11 16:59:00 to 15-APR-11 16:59:00 (CST-6)
Location: ZEIGLER
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Golf ball to hen egg size hail was reported.

Hail in WILLIAMSON, ILLINOIS
From 15-APR-11 16:59:00 to 15-APR-11 17:05:00 (CST-6)
Location: HERRIN
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WILLIAMSON, ILLINOIS
From 15-APR-11 17:03:00 to 15-APR-11 17:03:00 (CST-6)
Location: MARION
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter size hail fell near Johnson City.

Hail in MASSAC, ILLINOIS
From 15-APR-11 17:13:00 to 15-APR-11 17:23:00 (CST-6)
Location: ROUND KNOB
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HAMILTON, ILLINOIS
From 15-APR-11 17:42:00 to 15-APR-11 17:42:00 (CST-6)
Location: MC LEANSBORO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in MASSAC, ILLINOIS
From 15-APR-11 16:24:00 to 15-APR-11 16:24:00 (CST-6)
Location: MERMET
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 15-APR-11 16:50:00 to 15-APR-11 17:05:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 52.00 EG
Property damage: 6.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Wind gusts were estimated up to 60 mph by a trained spotter near West Frankfort. A couple of trees and power lines were down just north of Benton.

Hail in SALINE, ILLINOIS
From 15-APR-11 17:14:00 to 15-APR-11 17:25:00 (CST-6)
Location: HARRISBURG
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, ILLINOIS
From 15-APR-11 17:02:00 to 15-APR-11 17:10:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PERRY, ILLINOIS
From 15-APR-11 16:24:00 to 15-APR-11 16:24:00 (CST-6)
Location: PINCKNEYVILLE
Magnitude: 56.00 MG
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A wind gust to 64 mph was measured on Highway 152. A large tree fell on a house in Pinckneyville. The uprooted tree fell onto the back room of the house. A hole was punctured in the roof, and a shed was damaged.

Hail in SALINE, ILLINOIS
From 15-APR-11 17:39:00 to 15-APR-11 17:44:00 (CST-6)
Location: STONEFORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Quarter-size hail fell in Stonefort and Carrier Mills. Nickel-size hail occurred in Harrisburg.

Hail in MASSAC, ILLINOIS
From 15-APR-11 17:40:00 to 15-APR-11 17:49:00 (CST-6)
Location: METROPOLIS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter