Start date: may 20 2013 start time: 625 PM CDT start location: 4 N Fairland / Ottawa County / OK start lat/lon: 36.8129 / -94.8461
End date: may 20 2013 end time: 640 PM CDT end location: 4 NE Wyandotte / Ottawa County / OK end lat/lon: 36.8298 / -94.6706
Survey summary: this tornado snapped or uprooted numerous trees and damaged numerous homes. The most significant damage was located near the area where the tornado crossed Highway 137 where a metal building was severely damaged and several homes were damaged. Many Hardwood trees were also snapped in that area.
Start date: may 20 2013 start time: 632 PM CDT start location: 2.8 NW Wyandotte / Ottawa County / OK start lat/lon: 36.8128 / -94.7701
End date: may 20 2013 end time: 642 PM CDT end location: 0.5 se Seneca / Newton County / MO end lat/lon: 36.8359 / -94.6062
Survey summary: this tornado damaged several houses... damaged barns or outbuildings... and snapped or uprooted a number of trees. It dissipated over the south side of Seneca Missouri after snapping or uprooting several trees as it crossed the state line and crossed Highway 43. Several eyewitnesses north of Wyandotte saw two tornadoes approaching from the west and radar data as well as damage patterns support that conclusion. In addition... there was lots of evidence of straight-line wind damage south of the tornado paths as the Bow echo storm surged east as it approached the state line.
.Talala area tornado...
Rating: EF-1 estimated peak wind: 90-100 mph path length /statute/: to be determined path width /maximum/: to be determined fatalities: 0 injuries: 0
Start date: may 20 2013 start time: to be determined start location: to be determined start lat/lon: to be determinded
End date: may 20 2013 end time: to be determined end location: to be determined end lat/lon: to be determined
Survey summary: this tornado was photographed by a number of witnesses and apparently remained over open country for much of its lifecycle to the northwest of Talala. However... the survey team was able to get a preliminary assessment on this area today just before sunset and did find one home that had been hit... probably toward the end of the tornado lifecycle. This home had roof damage... windows broken out... chimney torn off the roof and a nearby metal framed barn damaged with Bay doors blown out on both sides. This may have been the final tornado of several produced by the storm that first produced a tornado south of Avant in Osage County. Further surveys will be done in this area on Wednesday and photos and video from spotters and chasers will be reviewed to help finalize this portion of the event.
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
Note: the information in this statement is preliminary and subject to change pending final review of the events and publication in NWS storm data.
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