Scattered thunderstorms persisted through the early morning hours along an axis of increasing moisture and confluence associated with a west-southwesterly low level jet. The activity was located on the southern fringe of a moderately strong east-west mid-level jet. The associated deep-layer shear and warm advection boosted the threat of large hail and isolated wind damage.

Hail in WILLIAMSON, ILLINOIS
From 07-MAY-09 23:27:00 to 07-MAY-09 23:40:00 (CST-6)
Location: CAMBRIA
Magnitude: 1.75 
Crop damage: 0.00K
Reported by: Trained Spotter

Golf-ball size hail fell across much of western Williamson County from Carterville to Herrin and Cambria.

Thunderstorm Wind in MASSAC, ILLINOIS
From 08-MAY-09 02:00:00 to 08-MAY-09 02:01:00 (CST-6)
Location: METROPOLIS MUNI ARPT
Magnitude: 70.00 EG
Property damage: 40.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This microburst was only about 0.3 miles long and 0.3 miles wide. A couple of large trees were uprooted. Five houses had roof damage, mainly to shingles. Tin on roofs of outbuildings curled up. One garage sustained minor roof and siding damage.

Hail in JOHNSON, ILLINOIS
From 08-MAY-09 01:24:00 to 08-MAY-09 01:24:00 (CST-6)
Location: OZARK
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail in SALINE, ILLINOIS
From 08-MAY-09 00:11:00 to 08-MAY-09 00:11:00 (CST-6)
Location: STONEFORT
Magnitude: 1.50 
Crop damage: 0.00K
Reported by: Public

Hail in JACKSON, ILLINOIS
From 07-MAY-09 23:15:00 to 07-MAY-09 23:15:00 (CST-6)
Location: ORAVILLE
Magnitude: 1.75 
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Golf-ball hail fell on the north side of Murphysboro. An auto sales and home sales business received minimal damage. Vehicles were dinged at a residence northwest of Murphysboro. Smaller hail around the size of nickels fell downtown.

Thunderstorm Wind in JACKSON, ILLINOIS
From 07-MAY-09 23:20:00 to 07-MAY-09 23:20:00 (CST-6)
Location: MURPHYSBORO
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines were down.

Hail in JACKSON, ILLINOIS
From 08-MAY-09 00:42:00 to 08-MAY-09 00:42:00 (CST-6)
Location: MAKANDA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Quarter-size hail fell in Giant City State Park.

Thunderstorm Wind in PERRY, ILLINOIS
From 07-MAY-09 22:35:00 to 07-MAY-09 22:35:00 (CST-6)
Location: LAYFIELD
Magnitude: 61.00 EG
Property damage: 8.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Shingles were blown off a roof. A barn roof was partially blown off. The microburst damage area was about 100 yards long and 50 yards wide. The damage site was on Route 154 several miles west of Pinckneyville.

Hail in WILLIAMSON, ILLINOIS
From 07-MAY-09 23:39:00 to 07-MAY-09 23:46:00 (CST-6)
Location: (MWA)MARION WLLMSON
Magnitude: 2.00 
Crop damage: 0.00K
Reported by: Emergency Manager

Hail was measured up to two inches in diameter on Route 148.

Hail in HARDIN, ILLINOIS
From 08-MAY-09 01:05:00 to 08-MAY-09 01:09:00 (CST-6)
Location: ELIZABETHTOWN
Magnitude: 1.00 
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Large hail lasted about four minutes. The hail was accompanied by strong winds. Some cars were dented.

Hail in JACKSON, ILLINOIS
From 07-MAY-09 23:20:00 to 07-MAY-09 23:30:00 (CST-6)
Location: DE SOTO
Magnitude: 1.75 
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Hail ranging from quarter to golf-ball size affected the Carbondale area north to DeSoto. Quarter to half-dollar size hail fell in DeSoto. On the east side of Carbondale, at least ten car windshields were broken by golf-ball size hail. Hail from one to one-and-one-half inches in diameter was reported on the west and north sides of Carbondale.