Widely scattered thunderstorms developed during the heat of the afternoon. Some of these slow-moving storms produced large hail and pockets of damaging wind. Strong surface heating resulted in temperatures warming into the lower 100's, with 30 to 40-degree temperature-dew point spreads at the surface. Very steep low-level lapse rates and dry air in the low levels promoted the occurrence of microbursts. Wind fields were weak at the surface and aloft, resulting in slow storm movements and relatively disorganized storm structures.

Hail in GALLATIN, ILLINOIS
From 01-JUL-12 14:01:00 to 01-JUL-12 14:01:00 (CST-6)
Location: SHAWNEETOWN
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WILLIAMSON, ILLINOIS
From 01-JUL-12 14:10:00 to 01-JUL-12 14:10:00 (CST-6)
Location: CREAL SPGS
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail in WHITE, ILLINOIS
From 01-JUL-12 14:37:00 to 01-JUL-12 14:37:00 (CST-6)
Location: HERALD
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, ILLINOIS
From 01-JUL-12 14:59:00 to 01-JUL-12 14:59:00 (CST-6)
Location: PARKER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The hail was reported at Egyptian Hills Resort on Lake of Egypt.

Hail in WHITE, ILLINOIS
From 01-JUL-12 14:59:00 to 01-JUL-12 14:59:00 (CST-6)
Location: CARMI
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There were also wind gusts estimated around 55 mph.

Hail in WABASH, ILLINOIS
From 01-JUL-12 16:38:00 to 01-JUL-12 16:38:00 (CST-6)
Location: ALLENDALE
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Fire Department/Rescue

Heavy Rain in GALLATIN, ILLINOIS
From 01-JUL-12 12:30:00 to 01-JUL-12 14:28:00 (CST-6)
Location: JUNCTION
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter measured 4 inches of rain.

Thunderstorm Wind in WABASH, ILLINOIS
From 01-JUL-12 15:56:00 to 01-JUL-12 16:07:00 (CST-6)
Location: MT CARMEL
Magnitude: 52.00 EG
Property damage: 14.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Several trees were down in the city limits. A very large tree blocked an intersection of two side streets. Another tree was down on a road off Illinois Route 1.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 01-JUL-12 16:10:00 to 01-JUL-12 16:10:00 (CST-6)
Location: VALIER
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large branches were down on the road. At least two power poles were snapped in half. Sustained winds were estimated around 40 mph, with gusts to 70 mph.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 01-JUL-12 15:50:00 to 01-JUL-12 16:05:00 (CST-6)
Location: CHRISTOPHER
Magnitude: 65.00 EG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Public

In Christopher, a large portion of the roof was torn off an elementary school. About 2200 square feet was lifted off. Ten classrooms were flooded by rainwater. The water brought down ceiling tiles in four classrooms. There were about 16 inches of water in some parts of the school. In Benton, wind took down three sections of vinyl fencing. It also tore the facing off the front of a house.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 01-JUL-12 15:52:00 to 01-JUL-12 15:52:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 56.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: NWS Employee

A National Weather Service employee reported a downed tree was blocking one of the lanes on Interstate 57 at mile marker 65. In the same location, at least two other trees were down and four to five tree tops were snapped off. Mile marker 65 is at the West Frankfort exit.

Thunderstorm Wind in JOHNSON, ILLINOIS
From 01-JUL-12 15:30:00 to 01-JUL-12 15:30:00 (CST-6)
Location: GOREVILLE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree fell on a deck, injuring four people. The house was in a subdivision near Lake of Egypt.

Hail in PERRY, ILLINOIS
From 01-JUL-12 15:23:00 to 01-JUL-12 15:23:00 (CST-6)
Location: CUTLER
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:50:00 to 01-JUL-12 15:50:00 (CST-6)
Location: CHRISTOPHER
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in HAMILTON, ILLINOIS
From 01-JUL-12 16:18:00 to 01-JUL-12 16:18:00 (CST-6)
Location: MC LEANSBORO
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in GALLATIN, ILLINOIS
From 01-JUL-12 13:19:00 to 01-JUL-12 13:19:00 (CST-6)
Location: JUNCTION
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:00:00 to 01-JUL-12 15:00:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in JOHNSON, ILLINOIS
From 01-JUL-12 15:08:00 to 01-JUL-12 15:08:00 (CST-6)
Location: TUNNEL HILL
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

The hail fell off and on for up to 15 minutes.

Hail in JOHNSON, ILLINOIS
From 01-JUL-12 15:16:00 to 01-JUL-12 15:31:00 (CST-6)
Location: TUNNEL HILL
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A severe thunderstorm, producing hail slightly larger than golf balls, drifted slowly south across Tunnel Hill. The slow movement of the storm caused a rather long duration of hail.

Hail in WABASH, ILLINOIS
From 01-JUL-12 15:50:00 to 01-JUL-12 15:50:00 (CST-6)
Location: KEENSBURG
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:55:00 to 01-JUL-12 15:55:00 (CST-6)
Location: CHRISTOPHER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:56:00 to 01-JUL-12 15:59:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:58:00 to 01-JUL-12 16:05:00 (CST-6)
Location: VALIER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

There were also wind gusts estimated near 50 mph.

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 15:59:00 to 01-JUL-12 16:05:00 (CST-6)
Location: BENTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in FRANKLIN, ILLINOIS
From 01-JUL-12 16:17:00 to 01-JUL-12 16:17:00 (CST-6)
Location: WHITTINGTON
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail in WABASH, ILLINOIS
From 01-JUL-12 16:21:00 to 01-JUL-12 16:21:00 (CST-6)
Location: ALLENDALE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Thunderstorm Wind in PERRY, ILLINOIS
From 01-JUL-12 15:10:00 to 01-JUL-12 15:10:00 (CST-6)
Location: CUTLER
Magnitude: 61.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Power poles were downed in the city limits. There were power outages.