The following events were reported: Thunderstorm Wind, Tornado. These occurred near station USW00013994, approximately 32.3533 km away, between 2011-02-27 23:35:00 and 2011-02-27 23:48:00.The events resulted in 1 injuries and 0 fatalities. No significant property or crop damage was reported. Episode Narrative: A quasi-stationary frontal boundary was the main focusing mechanism for a round of significant severe weather over the forecast area. A strong shortwave moved along the boundary triggering widespread showers and thunderstorms. Numerous reports of large hail, damaging winds and 22 tornadoes occurred with this system. A quasi-stationary frontal boundary was the main focusing mechanism for a round of significant severe weather over the forecast area. Event Narrative: Thunderstorm winds blew down several trees, numerous tree limbs and tore a 16 foot by 24 foot section of a roof off of Copper Creek Christian Church. A pavilion at Drost Park was picked up and dropped about 10 feet away from its original location. The tornado formed just west of Interstate 55 near Mick Road approximately 2 miles north of the Interstate 55/70/255 interchange where a few power poles were knocked over. The tornado crossed Interstate 55 and produced minor tree damage. It continued east-northeast where it produced roof and siding damage to a couple of homes. One home had part of the roof decking on the south side of the house removed while another had a flag pole located well to the north of the structure bent over almost to ground level. This pole was pointing south. Further along the path, a barn was destroyed along Staunton Road with debris strewn several hundred yards across the road into an open field. The tornado continued east-northeast until it snapped several mature pine trees off several feet above the ground along Nealy Lane. The tornado dissipated before reaching Illinois Route 4. The path length was 2 miles. The tornado had a maximum width of 50 yards and maximum intensity of EF1 for the destroyed barn and the snapped pine trees. The tornado touched down between Edwardsville and Glen Carbon near the intersection of Ginger Creek Drive and Illinois Route 157. There were several cedar trees uprooted at this location. The tornado continued east-northeast through the Ginger Creek Subdivision to the intersection of Center Grove Road and Illinois Route 159. This is where a metal industrial building sustained roof and siding damage. The tornado also crossed the intersection of Center Grove Road and Troy Road where a few signs of local businesses were damaged and a Home Depot sustained some damage to small preconstructed sheds sitting outside. The tornado continued east-northeast to near the intersection of Gerber Road and Governors Parkway where several houses sustained minor roof and siding damage. The tornado dissipated just beyond this location. The path length of this tornado was 2.4 miles long. Most of the damage along the path was rated EF0 with the maximum intensity rated EF1 for some tree damage and the industrial building damage. The maximum path width was 150 yards. It was determined that a tornado touched down on Weathervane Road on the west side of Troy at approximately 11:45 PM. It was there that the tornado was at its strongest, an EF2, as it completely removed the roof from a well constructed home. One occupant received a serious head laceration and was treated at a local hospital. The tornado moved eastward at 60 mph, with a damage swath of 100 to 200 yards wide. Numerous trees, power lines, and roofs sustained minor to moderate damage along its path. The tornado continued to near the intersection of North Dewey Street and East Market Street, where it lifted at approximately 11:48 PM. The path length was 2.7 miles long. Thunderstorm winds blew down part of a fence and bent a flag pole in half in Cahokia. It was determined that an EF1 tornado cut a 100 yard wide, over 3 mile long path through Granite City. The tornado first touched down at approximately 11:35 PM near the intersection of Illinois Route 3 and Rock Road. There, a large storage facility lost much of its roof. The tornado rapidly moved eastward at nearly 60 mph, causing significant tree and roof damage in its path. The tornado reached Maryville Road at around 11:38 PM where it dissipated.