An outbreak of severe thunderstorms was triggered by an unseasonably strong low pressure system over the Upper Mississippi Valley. The trailing cold front swept east across southern Illinois. Strong south winds ahead of this front brought adequate moisture and instability for a line of low-topped convection. Minimal lightning activity was reported.

Thunderstorm Wind in SALINE, ILLINOIS
From 26-OCT-10 06:10:00 to 26-OCT-10 06:10:00 (CST-6)
Location: HARRISBURG
Magnitude: 50.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Downed trees blocked Highway 13 on the west side of town.

Thunderstorm Wind in JACKSON, ILLINOIS
From 26-OCT-10 04:40:00 to 26-OCT-10 04:40:00 (CST-6)
Location: GRAND TOWER
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees were blown down.

Thunderstorm Wind in ALEXANDER, ILLINOIS
From 26-OCT-10 05:25:00 to 26-OCT-10 05:25:00 (CST-6)
Location: OLIVE BRANCH
Magnitude: 52.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were down across the county, especially in the Olive Branch area.

Thunderstorm Wind in WABASH, ILLINOIS
From 26-OCT-10 06:29:00 to 26-OCT-10 06:30:00 (CST-6)
Location: ALLENDALE
Magnitude: 61.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

A microburst about 30 yards in width and less than a half mile in length broke several large tree limbs. This damage was about 100 yards south of the EF-1 tornado.

Tornado in WABASH, ILLINOIS
From 26-OCT-10 06:29:00 to 26-OCT-10 06:31:00 (CST-6)
Location: ALLENDALE
Tornado F-scale: EF1
Property damage: 8.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

Several large trees and tree limbs were down along the intermittent damage path. A tree was down on a house. Shingles were blown off a couple of houses. The tornado was in a very rural area. Peak winds were estimated at 90 mph.

Thunderstorm Wind in MASSAC, ILLINOIS
From 26-OCT-10 06:18:00 to 26-OCT-10 06:18:00 (CST-6)
Location: METROPOLIS
Magnitude: 60.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A wind gust to 69 mph was measured on the north side of the city.

Tornado in WABASH, ILLINOIS
From 26-OCT-10 06:23:00 to 26-OCT-10 06:26:00 (CST-6)
Location: MAUD
Tornado F-scale: EF0
Property damage: 4.00K
Crop damage: 0.00K
Reported by: NWS Storm Survey

This tornado touched down just north of Highway 15 along County Road 850E. The tornado caused mainly tree damage. There were several large tree limbs down. Some minor siding damage occurred on a house. Siding was taken off the east side of a barn. The damage path was intermittent. Peak winds were estimated at 75 mph.

Thunderstorm Wind in WHITE, ILLINOIS
From 26-OCT-10 06:13:00 to 26-OCT-10 06:13:00 (CST-6)
Location: CARMI
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A few trees and utility poles were down in the city. There were some power outages.

Thunderstorm Wind in WABASH, ILLINOIS
From 26-OCT-10 06:20:00 to 26-OCT-10 06:28:00 (CST-6)
Location: MT CARMEL
Magnitude: 52.00 MG
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Trees were down in the city limits of Mount Carmel. A radio station measured a wind gust to 60 mph. The radio station reported a tree about one foot in diameter was blown down near the studio. A tree limb landed on a house, causing major damage to the roof.

Thunderstorm Wind in FRANKLIN, ILLINOIS
From 26-OCT-10 05:00:00 to 26-OCT-10 05:10:00 (CST-6)
Location: ROYALTON
Magnitude: 61.00 EG
Property damage: 25.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Power lines and trees were down in Royalton and West Frankfort. Some utility poles were snapped. In West Frankfort, limbs and medium-size branches were down, and lawn furniture was tossed around. A fallen light pole blocked traffic on a West Frankfort main thoroughfare.

Thunderstorm Wind in UNION, ILLINOIS
From 26-OCT-10 05:00:00 to 26-OCT-10 05:05:00 (CST-6)
Location: ALTO PASS
Magnitude: 52.00 EG
Property damage: 4.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Several trees were blown down on the northwest side of the county, including locations near Highway 127 and Old U.S. 51. These locations are just south of the Jackson County line.

Thunderstorm Wind in JACKSON, ILLINOIS
From 26-OCT-10 04:40:00 to 26-OCT-10 04:55:00 (CST-6)
Location: MURPHYSBORO
Magnitude: 50.00 EG
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down in Murphysboro. Trees were blown down in Carbondale. A few power poles were damaged in Carbondale.

Thunderstorm Wind in WILLIAMSON, ILLINOIS
From 26-OCT-10 05:08:00 to 26-OCT-10 05:20:00 (CST-6)
Location: CARTERVILLE
Magnitude: 52.00 EG
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A few trees were blown down, including two on County Road 26 just southwest of Crab Orchard Lake. Another tree was down just north of Carterville. Power lines were down near Cambria. At a car dealership, a fence was blown down.

Lightning in FRANKLIN, ILLINOIS
From 26-OCT-10 05:15:00 to 26-OCT-10 05:15:00 (CST-6)
Location: CHRISTOPHER
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A house was struck by lightning.