Rain and melting snow caused flooding along the Little Powder River in far northwestern Campbell County.
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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.
Rain and melting snow caused flooding along the Little Powder River in far northwestern Campbell County.
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 May 30, 1:43 AM MST, 1 hour 17 minutes earlier.
Area Forecast Discussion For Western SD and Northeastern WY National Weather Service Rapid City SD 243 AM MDT Thu May 30 2019 .DISCUSSION...(Today Through Wednesday) Issued at 229 AM MDT Thu May 30 2019 Current surface map places high pressure across Wyoming while water vapor shows upper high dropping into North Dakota. A few mid level clouds across western South Dakota with isolated -shra across south central South Dakota. For today, upper high drops into South Dakota. With large scale subsidence and marginal instability, any thunderstorm activity should be limited to the Black Hills. High breaks down early Friday allowing weak upper trof to slowly moves through Wyoming and western South Dakota Friday. Meanwhile, cold front backs into western South Dakota late Friday. Isolated/scattered thunderstorms expected, especially from the Black Hills into central South Dakota. Upper ridge builds across the northern plains this weekend...with flat ridge/zonal flow into next week. Weak embedded shortwaves will result in a daily chance of thunderstorms. && .AVIATION...(For the 06Z TAFS Through 06Z Thursday Night) Issued At 1044 PM MDT Wed May 29 2019 VFR conditions are generally expected through the TAF period. A few SHRA/TSRA may develop near/over the Black Hills on Thursday afternoon, which could locally, briefly drop conditions to MVFR. && .UNR WATCHES/WARNINGS/ADVISORIES... SD...None. WY...None. && DISCUSSION...7 AVIATION...Sherburn
Hazardous Weather Outlook...UPDATED National Weather Service Rapid City SD 717 PM MDT Wed May 29 2019 SDZ001-002-012-013-024-025-044-047-WYZ054>058-071-301300- Harding-Perkins-Butte-Northern Meade Co Plains- Northern Black Hills-Northern Foot Hills-Bennett-Todd- Northern Campbell-Southern Campbell-Western Crook- Wyoming Black Hills-Weston-Northeastern Crook- 717 PM MDT Wed May 29 2019 /817 PM CDT Wed May 29 2019/ This Hazardous Weather Outlook is for portions of western South Dakota and northeastern Wyoming. .DAY ONE...TONIGHT No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday There is a near daily chance of thunderstorms for the upcoming week, mainly over the Black Hills. Severe storms are not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ014-026>032-041>043-046-049-072>074-301300- Ziebach-Rapid City-Southern Foot Hills-Central Black Hills- Southern Black Hills-Custer Co Plains-Pennington Co Plains-Haakon- Fall River-Oglala Lakota-Jackson-Mellette-Tripp- Sturgis/Piedmont Foot Hills-Southern Meade Co Plains- Hermosa Foot Hills- 717 PM MDT Wed May 29 2019 /817 PM CDT Wed May 29 2019/ This Hazardous Weather Outlook is for portions of western South Dakota and northeastern Wyoming. .DAY ONE...Tonight Flooding continues across portions of the western South Dakota plains. See the latest flood warnings and statements for details. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday There is a near daily chance of thunderstorms for the upcoming week, mainly over the Black Hills. Severe storms are not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Minor flooding occurred along the Little Powder River in far northwestern Campbell County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wyoming in 2019Every state in 2019This day in weather historyWarnings in Wyoming, May 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 831846.