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373 NOUS43 KUNR 192204 PNSUNR SDZ049-201015- Public Information Statement National Weather Service Rapid City SD 404 PM MDT Thu Jul 19 2018 ...NWS DAMAGE SURVEY FOR 07/18/2018 TORNADO EVENT... ...Tripp County Tornado... During the evening of July 18, 2018, an intense thunderstorm over northeastern Tripp County produced a brief tornado and significant straight-line wind damage. The tornado developed near the intersection of 257th Street and 325th Avenue, tipping over and damaging an irrigation pivot before dissipating. The highest winds of the tornado were estimated to be 90 to 100 mph, which gives it a rating of EF-1. In addition, straight-line winds snapped trees and power poles to the west and southwest of the tornado, with estimated wind speeds up to 115 mph. Rating: EF-1 Estimated peak wind: 100 mph Path length /Statute/: 0.22 miles Path width /Maximum/: 20 yards Fatalities: 0 Injuries: 0 Start date: Jul 18, 2018 Start time: 735 pm CDT Start location: 6 north northeast of Hamill Start Lat/Lon: 43.6738 / -99.6440 End date: Jul 18, 2018 End time: 736 pm CDT End location: 6 north northeast of Hamill End_lat/lon: 43.6751 / -99.6402 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 event and publication in NWS Storm Data. $$