The National Weather Service in Huntsville has determined that two tornadoes touched down in northwestern Alabama late Saturday, December 17. They also found tree and power pole damage conducive of 65 mph thunderstorm winds in Waterloo
Below are the official Public Information Statements from the National Weather Service regarding the tornadoes.
000 NOUS44 KHUN 192223 PNSHUN ALZ004>009-016-TNZ096-201330- Public Information Statement National Weather Service Huntsville AL 423 PM CST Mon Dec 19 2016 ...NWS Damage Survey for 12/17-18/16 Tornado Event... .Vina Tornado (Franklin AL)... Rating: EF-0 Estimated Peak Wind: 80 MPH Path length /Statute/: 0.97 Miles Path width /Maximum/: 75 Yards Fatalities: 0 Injuries: 0 Start date: DEC 18 2016 Start time: 1242 AM CST Start location: Hwy 9 just west of Maple Street Start Lat/Lon: 34.37510/-88.07190 End date: DEC 18 2016 End time: 1246 AM CST End location: Near intersection of Maple St/Old Cotton Gin Rd End_lat/lon: 34.37845/-88.05529 Survey Summary: The NWS in conjunction with Franklin Alabama EMA conducted a ground survey of damage in Vina. The findings are as follows. An initially very weak and narrow tornado touched down in the Vina community along Highway 19 just west of Maple Street. Here some limbs were snapped off of a stand of trees on the south side of the road. Additional very minor tree damage was noted south of Highway 19. A tree was uprooted near a home along Cedar street south of Highway 19. The tornado then likely crossed Highway 19 very near two community storm shelters and the local fire department. No discernible damage was identifiable here, but it should be noted that the shelters were open and occupied due to watches and warnings being in effect. Damage was once again noted on the south and west side of the Vina High School. On the south side, a large tree was snapped and a home sustained roof damage. The athletic fields sustained damage to the fences and a baseball dugout was destroyed. Several large unanchored objects here were thrown large distances. The school sustained roof damage in several locations including uplift of the roof on the main building. Windows were also blown out here by the wind with other damage due to the flying debris. Awnings were also destroyed connecting different portions of the school. The tornado was rated EF-0 here with maximum winds of 80 mph due to the damage to the roof in several different locations. The width was estimated to be around 75 yards. The tornado lifted up and blew away shingles on another building here before lifting in the wooded area east northeast of the school. .Riverton Tornado (Colbert) Rating: EF-0 Estimated Peak Wind: 85 MPH Path length /Statute/: 0.62 Miles Path width /Maximum/: 87 Yards Fatalities: 0 Injuries: 0 Start date: Dec. 17 2016 Start time: 1137 PM CST Start location: 4 SSW Waterloo Start Lat/Lon: 34.82 / -88.08 End date: Dec. 17 2016 End time: 1138 PM CST End location: 3 SSW Waterloo End_lat/lon: 34.83 / -88.07 Survey Summary: A NWS and Colbert County survey team investigated significant tree damage in the Riverton area. The damage was associated with a weak tornado embedded in a line of thunderstorms along a cold front. The damage occurred at 537 UTC, as estimated on radar. The survey team determined a tornado touched down at 537 UTC in the Riverton, AL area. Numerous softwood trees were either uprooted or snapped just east of Bear Creek along Riverton Rose Trail. Damage was conducive to an EF-0 tornado with maximum winds speeds of 85 MPH. The weak tornado produced a swath of damage approx. 0.62 miles long and 87 yards wide. Damage indicators in this region were sparse, other than the tree damage along Riverton Rose Trail. The tornado was likely only briefly on the ground (1 min or less) given the a storm motion nearly of 50 mph. EF Scale: The Enhanced Fujita Scale Classifies Tornadoes into the following categories. EF0...Weak......65 to 85 MPH EF1...Weak......86 to 110 MPH EF2...Strong....111 to 135 MPH EF3...Strong....136 to 165 MPH EF4...Violent...166 To 200 MPH EF5...Violent...>200 MPH .Waterloo Thunderstorm Wind Damage... Peak wind E: 65 MPH Path length /Statute/: 1.5 Miles Path width /Maximum/: 950 Yards Fatalities: 0 Injuries: 0 Start date: Dec. 17 2016 Start time: 1145 PM CST Start location: 10 NE Cherokee End date: Dec. 17 2016 End time: 1145 PM CST End location: 10 NE Cherokee Survey Summary: NWS and Lauderdale County EMA survey team found tree damage and power pole damage conducive to thunderstorm winds with estimated speed of 65 mph near CR 189 and CR 14. Note: The information in this statement is preliminary and subject to change pending final review of the events and publication in NWS Storm Data. $$