Public Information Statement
Issued by NWS Cheyenne, WY
Issued by NWS Cheyenne, WY
Versions:
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564 NOUS45 KCYS 220905 PNSCYS NEZ002-003-019>021-054-055-095-096-WYZ101>119-222115- Public Information Statement National Weather Service Cheyenne, WY 305 AM MDT Sat Jun 22 2024 ...NWS DAMAGE SURVEY FOR 6/20/2024 TORNADO EVENT. A supercell thunderstorm developed near Chugwater, Wyoming on the afternoon of 6/20/2024. This thunderstorm produced two tornadoes as it traveled eastward. One brief tornado occurred in rural Goshen County Wyoming and a second tornado occurred southeast of Morrill, Nebraska. .Morrill Tornado... Rating: EF-1 Estimated peak wind: 100 mph Path length /Statute/: 1.4 miles Path width /Maximum/: 50 yards Fatalities: 0 Injuries: 0 Start date: 6/20/2024 Start time: 3:29 PM MDT Start location: 2.5 miles southeast of Morrill, NE Start Lat/Lon: 41.956, -103.882 End date: 6/20/2024 End time: 3:34 PM MDT End location: 4 miles southeast of Morrill, NE End_lat/lon: 41.960, -103.855 NWS damage survey found evidence of EF-1 tornado damage at multiple properties along County Road D as well as along Highway 26. One residence had partial roof structure failure as well as roofing material completely removed. Another garage facility experienced total structural collapse and foundation shift. Numerous large tree limbs 1-2 feet in diameter were snapped and scattered. Several smaller metal outbuildings were also destroyed and scattered. Of important note, this tornado occurred along the northern fringe of a much larger area of powerful straight-line outflow winds observed in excess of 90 to 100 mph. Damage indicators from the straight-line winds throughout Scotts Bluff county were all pointed eastward. This was in dramatic contrast to the tornado path which featured a chaotic scattering of damage and debris, some of which was lofted north and even back west of the circulation path. .Goshen County Tornado... Rating: EF-U Estimated peak wind: Unknown Path length /Statute/: <0.5 miles Path width /Maximum/: <20 yards Fatalities: 0 Injuries: 0 Start date: 6/20/2024 Start time: 2:40 PM MDT Start location: 7.5 miles northwest of Hawk Springs, WY Start Lat/Lon: 41.821, -104.398 End date: 6/20/2024 End time: 2:45 PM MDT End location: 6 miles northwest of Hawk Springs, WY End_lat/lon: 41.823, -104.365 A brief tornado was observed in rural Goshen County by numerous storm spotters and emergency management personnel. Due to the rural nature of this tornado, only limited damage to fencing was found, as well as scattered plant debris. Review of video and photo sequences along with radar time-matching indicate that this tornado likely began as a landspout, but quickly gained mesocyclonic characteristics as it interacted with the updraft base, condensed a funnel, and slowed/occluded into the storm. Regardless, without any damage of note this tornado will be recorded as EF-U. 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. Special thanks to Emergency Management from both Scotts Bluff County and Goshen County for assistance with damage surveys as well as providing additional photos and videos of this event. Charnick $$