Public Information Statement
Issued by NWS Rapid City, SD
Issued by NWS Rapid City, SD
183 NOUS43 KUNR 131738 PNSUNR WYZ057-140545- Public Information Statement National Weather Service Rapid City SD 1138 AM MDT Fri Sep 13 2024 ...NWS Damage Survey for 08/19/2024 Tornado Event north of Warren Peak in the Bear Lodge Mountains... .Overview...In the afternoon of August 19 2024, a supercell thunderstorm developed over northeast Wyoming, causing extensive wind and hail damage as it tracked directly over Devils Tower National Monument. As the storm tracked a bit further east, a rain wrapped tornado developed early in the evening about half way between Hulett and Warren Peak in the Bear Lodge Mountains. Numerous pine trees were either uprooted or snapped in half along a path just over 2.5 miles long. The estimated damage width was over 1/4 mile in some areas, although some of this damage on the southern edge of the tornado was more consistent with straight line winds, so the estimated maximum tornado width was 300 yards. The tornado was on the ground for approximately 10 minutes with a speed of approximately 15 to 20 mph. .UNR-2024-0819-Bearlodge... Rating: EF1 Estimated Peak Wind: 110 mph Path Length /statute/: 2.67 miles Path Width /maximum/: 300 yards Fatalities: 0 Injuries: 0 Start Date: 08/19/2024 Start Time: 06:12 PM MDT Start Location: 8 SSW Alva / Crook County / WY Start Lat/Lon: 44.5776 / -104.4974 End Date: 08/19/2024 End Time: 06:22 PM MDT End Location: 8 S Alva / Crook County / WY End Lat/Lon: 44.5693 / -104.4477 Survey Summary: Some of the damage on the southern edge of the tornado path was more consistent with RFD (rear flank downdraft) winds. Many photos and videos of the storm damage were provided via USFS drone footage and greatly helped with this survey. && EF Scale: The Enhanced Fujita Scale classifies tornadoes into the following categories: EF0.....65 to 85 mph EF1.....86 to 110 mph EF2.....111 to 135 mph EF3.....136 to 165 mph EF4.....166 to 200 mph EF5.....>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. $$