A long-lived bow echo raced eastward across parts of southern Illinois at 60 mph. An extensive rain shield in the wake of the fast-moving line of storms supported development of a cold pool that sustained its growth. A corridor of moderate instability existed in advance of the storms. A 40 to 50-knot southwesterly low-level jet veered more westerly, further aiding in the eastward movement of the bow echo. A westerly rear-inflow jet around 70 knots developed attendant to the developing bow echo. Vertically veering low-level winds promoted the formation of an isolated tornado along the leading edge of the bow echo.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 19-JUN-11 02:58:00 to 19-JUN-11 03:10:00 (CST-6)
Location: BENTON
Magnitude: 83.00 EG
Property damage: 180.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A microburst with 95 mph winds caused extensive damage along a path about 1.25 miles wide and 18 miles long. The damage path started in the general vicinity of Rend Lake Dam and continued northeast across the Jefferson County border. Hundreds of trees were uprooted or snapped. A few utility poles were broken by falling trees. About a dozen homes were damaged, primarily from falling trees. Several barns and garages were destroyed or heavily damaged. One of the greatest concentrations of damage was at Lake Benton.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 19-JUN-11 03:01:00 to 19-JUN-11 03:01:00 (CST-6)
Location: WEST FRANKFORT
Magnitude: 70.00 MG
Property damage: 200.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Numerous trees were blown down across the city. The falling trees caused major damage to at least one vehicle. Several house roofs were damaged. Extensive damage occurred to a building that houses several businesses. A northwest corner wall was blown out. The sheet metal was torn away from the building, and a door was blown off. A loading dock roof was blown off another building and onto a vehicle. Numerous power lines were down. Winds were recorded at 80 mph.

Heavy Rain in ALEXANDER, ILLINOIS
From 19-JUN-11 03:30:00 to 19-JUN-11 04:20:00 (CST-6)
Location: MC CLURE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Water was over the road along Illinois Route 3 and County Road 4.

Tornado in PERRY, ILLINOIS
From 19-JUN-11 02:48:00 to 19-JUN-11 02:51:00 (CST-6)
Location: CLINCH
Tornado F-scale: EF1
Property damage: 550.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A tornado crossed through the DuQuoin State Fairgrounds, where damage was estimated around one-half million dollars. Dozens of large trees were snapped or uprooted. Several small camper trailers were overturned. One unoccupied trailer was demolished. Three persons were trapped inside a camper at the DuQuoin State Fairgrounds. They were extricated by fire and rescue personnel. One person sustained minor injuries in an overturned trailer. Several homes lost some shingles and sustained mainly minor damage from fallen trees. At the state fairgrounds, a shower/restroom facility and the Farm Service building were destroyed by falling trees. Large hvac units were lifted off the roof of the main arena building and overturned. The doors of the building were damaged. A couple of uprooted trees ruptured gas lines. The peak winds were estimated near 100 mph. The average path width was 200 yards.

Heavy Rain in JEFFERSON, ILLINOIS
From 19-JUN-11 03:10:00 to 19-JUN-11 05:10:00 (CST-6)
Location: MT VERNON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

Several secondary roads were flooded with several inches of water.

Thunderstorm Wind in JEFFERSON, ILLINOIS
From 19-JUN-11 03:10:00 to 19-JUN-11 03:13:00 (CST-6)
Location: SPRING GARDEN
Magnitude: 83.00 EG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This microburst continued northeast from Franklin County into southeast Jefferson County. Wind gusts were estimated up to 95 mph. Many trees were snapped or uprooted. A couple of roads were blocked by downed trees, including Illinois Highway 142. A few utility poles were broken by falling trees.

Heavy Rain in MASSAC, ILLINOIS
From 19-JUN-11 04:15:00 to 19-JUN-11 04:58:00 (CST-6)
Location: METROPOLIS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Rainfall from the storm was 1.35 inches. The storm lasted less than an hour.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 19-JUN-11 02:50:00 to 19-JUN-11 02:50:00 (CST-6)
Location: ROYALTON
Magnitude: 61.00 EG
Property damage: 75.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A silo was destroyed, and several barns and outbuildings were damaged.

Heavy Rain in PERRY, ILLINOIS
From 19-JUN-11 02:30:00 to 19-JUN-11 04:00:00 (CST-6)
Location: PINCKNEYVILLE
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Unknown

Flooding of some low-lying areas was reported.

Thunderstorm Wind in PERRY, ILLINOIS
From 19-JUN-11 02:45:00 to 19-JUN-11 02:45:00 (CST-6)
Location: DU QUOIN
Magnitude: 72.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

This gust to 83 mph was measured just west of town by a trained spotter.