An EF1 tornado impacted a home and adjacent homestead off of Grey Rd in far western Crook county. The tornado produced EF0 damage to several outbuildings south of the main single family residence.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS UNR wrote it up.
An EF1 tornado impacted a home and adjacent homestead off of Grey Rd in far western Crook county. The tornado produced EF0 damage to several outbuildings south of the main single family residence. EF0 consisted of pushing and destroying a small shed outbuilding and pushing a storage silo off its pad and rotating it 45 degrees to the SW from its origin. The tornado tracked NE and continued to produce EF0 damage near the main home. Several trees near the home were snapped and the home loss some roofing material. The tornado continued to the NE before shifting to the ENE where it intensified to EF1. The tornado damaged a large outbuilding, ripping two concrete foots out of the ground and pushing the entire concrete brace from the foundation some 10 yards to the ENE. The entire structure had slid off the foundation with the structures walls all collapsed. The tornado then entered open field with no damage indicators available. A large debris field of tree branches and building material was thrown to the E, NE and N of the tornado track.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before the first event at Jul 19, 12:30 PM MST, 2 hours 30 minutes earlier. Its key messages:
Area Forecast Discussion For Western SD and Northeastern WY National Weather Service Rapid City SD 130 PM MDT Sat Jul 19 2025 .KEY MESSAGES... - Slight chance (level 2 of 5) for severe thunderstorms from about 2-10pm this afternoon and evening, main concern is large hail. - Daily chances for at least isolated thunderstorms, some of which may be strong to severe, are expected Sunday into next week - Seasonably warm temperatures next week. && .DISCUSSION...(This Evening Through Saturday) Issued at 129 PM MDT Sat Jul 19 2025 Recent visible satellite imagery shows clearing skies over northeastern WY into far western and southwestern SD. Low level cloud cover stubbornly persists across much of the western SD plains, keeping temperatures cooler (in the 60s to 70s). Narrow corridor of 1500+ J/kg SB CAPE has developed across far northeastern WY into far western and southwestern SD where the clouds have cleared up and temperatures have climbed into the 80s. Boundary associated with lee sfc trof extends from MT into northeastern WY. A few storms have developed across North Dakota while showers still linger across the western SD plains. Storm development this afternoon will depend on how much we clear out in western SD. The most recent HRRR runs still show storms developing over northeastern WY by 22-23z and pushing across the Black Hills into western SD by 00-04z. Effective shear approaching 40-50kt and the moderately unstable airmass will support organized convection and rotating updrafts with hail (some potentially 2+") being the primary concern. Isolated storms, some strong to severe, are possible Sunday afternoon. Warm mid-level temps and lack of appreciable forcing will limit convection. However as a theta-E ridge noses into western SD Sunday afternoon, a corridor of 2000+ J/kg SB CAPE will develop with 30-40 kt 0-6km shear overhead. This will be supportive of a conditional severe threat across western SD. Broad upper level ridge builds into the southern to eastern half of the CONUS by early next week with attendant low level thermal ridge building across the central and northern plains. This will support a general warming trend and seasonable temperatures (highs in the 80s to 90s) across the region. The CWA will sit under southwest flow with periodic shortwaves along the flow bringing chances for storms, though details on timing and any potential severe threat remain murky. && .AVIATION...(For the 18Z TAFS Through 18Z Sunday) Issued At 1045 AM MDT Sat Jul 19 2025 Scattered TSRA, with isolated strong/severe storms containing erratic winds and hail, will develop after 21Z and last until 06Z. Storms will move to the east northeast. IFR conditions are expected in and near stronger storms. Additionally, IFR stratus will develop from 11Z to 16Z from K2WX to KPHP to KICR. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...None. WY...None. && DISCUSSION/KEY MESSAGES...Wong AVIATION...Smith
Hazardous Weather Outlook National Weather Service Rapid City SD 431 AM MDT Sat Jul 19 2025 SDZ001-002-012>014-024>032-041>044-047-072>078-WYZ056>060-201300- Harding-Northern Perkins-Butte-Northern Meade Co Plains-Ziebach- Northern Black Hills-Northern Foothills-Rapid City- Southern Foothills-Central Black Hills-Southern Black Hills- Custer Co Plains-Pennington Co Plains-Haakon-Western Fall River- Northern Oglala Lakota-Northern Jackson-Bennett-Todd- Sturgis/Piedmont Foothills-Southern Meade Co Plains- Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota- Southern Jackson-Southern Perkins-Western Crook- Wyoming Black Hills-Weston County Plains-Newcastle- Northeastern Crook- 431 AM MDT Sat Jul 19 2025 /531 AM CDT Sat Jul 19 2025/ This Hazardous Weather Outlook is for portions of western South Dakota and northeastern Wyoming. .DAY ONE...Today and Tonight There is a slight risk (level 2 of 5) of severe thunderstorms from about 200 PM to 1000 PM today, meaning that scattered severe storms are possible. Primary hazards include very large hail (2 inches or greater possible) and damaging winds. .DAYS TWO THROUGH SEVEN...Sunday through Friday Isolated severe thunderstorms are possible Sunday and Monday afternoon and evening. Large hail and damaging winds will be the main hazards. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ046-049-WYZ054-055-201300- Mellette-Tripp-Northern Campbell-Southern Campbell- 431 AM MDT Sat Jul 19 2025 /531 AM CDT Sat Jul 19 2025/ This Hazardous Weather Outlook is for portions of south central South Dakota...and northeast Wyoming. .DAY ONE...Today and Tonight There is a marginal risk (level 1 of 5) of severe thunderstorms from about 200 PM to 1000 PM, meaning that isolated severe storms are possible. Primary hazards include damaging winds and large hail. .DAYS TWO THROUGH SEVEN...Sunday through Friday Isolated severe thunderstorms are possible Sunday and Monday afternoon and evening. Large hail and damaging winds will be the main hazards. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity
The Rapid City radar (KUDX), 181 km away, was scanning. The volume nearest the first event began at 22:01 UTC.
1 tornado. Local standard time, as filed.
Survey team determined that an EF-1 landspout tornado impacted a home and adjacent homestead 10 NW of Moorcroft.
After NWS Directive 10-1605, the rules offices file Storm Data by.
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