Clayton k Cross
Enthusiast
- Joined
- Jan 27, 2025
- Messages
- 6
Just released by the National Weather Service on Monday October 6 of 2025:
…Enderlin Tornado #1 Upgraded to EF-5…The National Weather Service in Grand Forks conducted additional surveys and workedextensively with wind damage experts to further investigate the 20 June 2025 Enderlin, NDtornado #1. The estimated maximum wind speed of the Enderlin, ND tornado #1 is greaterthan 210 mph and occurred during the time of the train derailment south of Enderlin, ND.The analysis involved forensic damage wind speed estimates for tipping severalfully-loaded grain hopper cars and lofting of tanker cars, including one empty tanker carthat was tossed about 475.7 ft (145 m). The maximum wind speed also correlates to themaximum strength on WSR-88D Storm-Relative Velocity data from KMVX.Additional high-end damage indicators that have been reanalyzed and adjusted to includedamage to the trees near the Maple River east of Enderlin and damage to the farmstead #2on Hwy 46. Further analysis of the trees surrounding the Maple River show extensive treedamage throughout the entire river valley with only stubs of large branches or largetrunks remaining and debarking with a “sandpapering” effect prevalent. Trees withattached root ball displacements were noted, including one where the original locationcould not be determined. Wind damage expert analyses helped determine the damage atfarmstead #2 to be complete destruction with the foundation considered to be swept clean,and debris swept downwind and scattered. However, issues surrounding the lack of properanchoring will limit the overall rating in this area. Trees around the farmstead werealso debarked, and saw root ball displacements.The National Weather Service in Grand Forks would like to thank Tim Marshall,Jim LaDue, Dr. Connell Miller, Dr. Greg Kopp, Dr. David Sills, and the entire NorthernTornadoes Project at Western University’s Canadian Severe Storms Laboratory team fortheir assistance.
…Enderlin Tornado #1 Upgraded to EF-5…The National Weather Service in Grand Forks conducted additional surveys and workedextensively with wind damage experts to further investigate the 20 June 2025 Enderlin, NDtornado #1. The estimated maximum wind speed of the Enderlin, ND tornado #1 is greaterthan 210 mph and occurred during the time of the train derailment south of Enderlin, ND.The analysis involved forensic damage wind speed estimates for tipping severalfully-loaded grain hopper cars and lofting of tanker cars, including one empty tanker carthat was tossed about 475.7 ft (145 m). The maximum wind speed also correlates to themaximum strength on WSR-88D Storm-Relative Velocity data from KMVX.Additional high-end damage indicators that have been reanalyzed and adjusted to includedamage to the trees near the Maple River east of Enderlin and damage to the farmstead #2on Hwy 46. Further analysis of the trees surrounding the Maple River show extensive treedamage throughout the entire river valley with only stubs of large branches or largetrunks remaining and debarking with a “sandpapering” effect prevalent. Trees withattached root ball displacements were noted, including one where the original locationcould not be determined. Wind damage expert analyses helped determine the damage atfarmstead #2 to be complete destruction with the foundation considered to be swept clean,and debris swept downwind and scattered. However, issues surrounding the lack of properanchoring will limit the overall rating in this area. Trees around the farmstead werealso debarked, and saw root ball displacements.The National Weather Service in Grand Forks would like to thank Tim Marshall,Jim LaDue, Dr. Connell Miller, Dr. Greg Kopp, Dr. David Sills, and the entire NorthernTornadoes Project at Western University’s Canadian Severe Storms Laboratory team fortheir assistance.
