Thunderstorms produced damaging winds in Pipestone and Murray Counties of southwest Minnesota during the afternoon of September 24th.
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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 FSD wrote it up.
Thunderstorms produced damaging winds in Pipestone and Murray Counties of southwest Minnesota during the afternoon of September 24th.
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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Sep 24, 2:07 PM CST, 28 minutes earlier.
Area Forecast Discussion National Weather Service Sioux Falls SD 307 PM CDT SAT SEP 24 2016 .SHORT TERM...(This evening through Sunday) Issued at 307 PM CDT Sat Sep 24 2016 Well advertised large upper low will lift slowly northeastward tonight and Sunday, with the center of the low tracking from northwest SD, to around Lake Winnipeg during that time frame. A subtle short wave is now discernible moving from south to north across South Dakota this afternoon and early evening, then enters North Dakota late this evening and overnight. Mass transport of deep layer moisture is evident ahead of this short wave right in our area, generally east of the James River Valley, where widespread showers and storms will be prevalent through the early evening hours. Areas of heavy rainfall will also occur, with rainfall amounts averaging roughly an inch, and localized amounts of two inches, again generally east of the James River Valley. ML CAPE is rather thin, with values close to or less than 1000 J/Kg helping to make this a very efficient rain maker. Not too concerned about severe weather at this point as the rain cooled air will likely rapidly stabilize the lower to mid levels. But would not rule out some 40 mph wind gusts and small hail up to the size of dimes. This was already relayed in the HWO product a while back. As the short wave moves northward overnight, the rainfall will rapidly wane from west to east late this afternoon and evening. Much drier air will entrain in from the west. With a strong surge of cold air advection and stout mixed layer winds, our south central SD zones around Chamberlain will be very close to a wind advisory from roughly about 09Z to 18Z Sunday. Loading up the heftier guidance values in terms of wind speeds were used, and then manually added a few knots to the speeds of those to match the mixed layer winds were used. So this is something to watch for a bit later on. The rest of the forecast area will be breezy to windy on Sunday, but wind speeds actually subside a tad in our western zones Sunday afternoon after the cold air advection and tight gradient subside. Sundays highs will be much cooler when compared to this past week, with widespread 60 to 65 in store. A lot of cold air advection and a bit of trowaling in the 295-305K layer will push stratus southward into much of our forecast area, and the moisture gets deep enough in the afternoon in our northeast zones to warrant a mention of light showers. .LONG TERM...(Sunday night through Saturday) Issued at 307 PM CDT Sat Sep 24 2016 Upper trough shifts east into the Upper Mississippi Valley Sunday evening, followed by a slow transition to a dominant mid-upper level ridge over the Northern Plains by mid next week. Upper low stagnates over the Great Lakes through Tuesday night, which prevents the upper ridge from moving too far east. But it appears as though it should have enough influence that daytime temperatures will shift from a few degrees below normal Monday, to a few degrees above normal by Tuesday. Monday should be a fairly mixy day in northwest flow, and have nudged winds upward and dew points downward from the broader model consensus. The drier air mass moving in for Monday should allow for some cool nighttime lows Monday night as the surface ridge moves into the James River Valley. Cannot rule out some readings dipping into the 30s in some valley areas, but expect most locations to see lows in the lower-mid 40s. Great Lakes upper low begins to open up and slide east Wednesday, allowing the upper ridge to build eastward through the Plains/Upper Midwest Thursday, then into the western Great Lakes by Friday. This will allow the temperatures to remain above normal, with highs in the 70s anticipated through the end of the week. Models differ in how quickly the upper ridge will move far enough east to allow for southwest flow to develop into the region. ECMWF is slower, and thus remains largely dry through the end of this forecast period. GFS is faster, which results in scattered precipitation chances by Friday and Saturday as waves lift northeast across the region. Given the uncertainties at this range, left some slight chance pops in the forecast for late this upcoming week. && .AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon) Issued at 1223 PM CDT Sat Sep 24 2016 18Z TAFs reflect showery conditions this afternoon with embedded thunderstorms. Rainfall beginning to fill in across eastern Nebraska at this time, and is heading northward. Therefore it should affect the TAF sites for awhile this afternoon. VFR conditions will be mixed with MVFR and possibly even short term IFR conditions under the rainfall. Otherwise, there will be a gradual eroding of the cloud cover from west to east through the evening hours and into the overnight, providing VFR conditions for a bulk of tonight. Cold air advection stratus clouds will then move into the western half of the forecast area Sunday morning providing MVFR cloud cover for KHON and KFSD. && .FSD Watches/Warnings/Advisories... SD...None. MN...None. IA...None. NE...None. && SHORT TERM...MJ LONG TERM...JH AVIATION...MJ
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SIOUX FALLS SD 148 PM CDT SAT SEP 24 2016 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ040-055-056-061-062-066-067-069>071-251900- LYON IA-OSCEOLA-DICKINSON-SIOUX-O'BRIEN-CLAY IA-PLYMOUTH-CHEROKEE- BUENA VISTA-WOODBURY-IDA-LINCOLN MN-LYON MN-MURRAY-COTTONWOOD- NOBLES-JACKSON-PIPESTONE-ROCK-DIXON-DAKOTA-BROOKINGS-LAKE-MOODY- MCCOOK-MINNEHAHA-TURNER-LINCOLN SD-YANKTON-CLAY SD-UNION- 148 PM CDT SAT SEP 24 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST IOWA...WEST CENTRAL IOWA...SOUTHWEST MINNESOTA...NORTHEAST NEBRASKA...EAST CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT WIDESPREAD THUNDERSTORMS WILL MOVE NORTHWARD SATURDAY AFTERNOON AND EVENING. RAINFALL AMOUNTS WILL AVERAGE ONE INCH OVER THE ENTIRE AREA. HOWEVER LOCALIZED RAINFALL AMOUNTS OF TWO INCHES IS CERTAINLY NOT OUT OF THE QUESTION. THE STRONGEST CELLS COULD PRODUCE WIND GUSTS AROUND 40 MPH AND HAIL UP TO THE SIZE OF DIMES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL LIKELY NOT BE NEEDED...BUT ANY REPORTS OF URBANIZED FLOODING ARE WELCOME. SDZ038-050-052-053-057>059-063-064-251900- BEADLE-GREGORY-JERAULD-SANBORN-BRULE-AURORA-DAVISON-CHARLES MIX- DOUGLAS- 148 PM CDT SAT SEP 24 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH DAKOTA...EAST CENTRAL SOUTH DAKOTA...SOUTH CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. SDZ039-054-060-065-068-251900- KINGSBURY-MINER-HANSON-HUTCHINSON-BON HOMME- 148 PM CDT SAT SEP 24 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL SOUTH DAKOTA AND SOUTHEAST SOUTH DAKOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL MOVE NORTHWARD SATURDAY AFTERNOON. THE STRONGEST CELLS COULD PRODUCE A QUICK HALF INCH TO ONE INCH OF RAINFALL...ESPECIALLY ALONG AND SOUTH OF INTERSTATE 90. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED.
The Sioux Falls radar (KFSD), 58 km away, was scanning. The volume nearest the first event began at 20:33 UTC.
3 thunderstorm wind. Local standard time, as filed.
Thunderstorm winds caused tree damage, including numerous 2 inch diameter branches blown down.
Thunderstorm winds caused tree damage and created huge waves on Lake Sarah.
Thunderstorm winds caused tree damage, including a few trees blown down at a campground.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2016Every state in 2016This day in weather historyWarnings in Minnesota, September 2016
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: 659433, 659434, 659435.