A weak front moving across North Dakota helped initiate a few storms in north central South Dakota during the overnight hours. One of these storms was strong enough to generate hail and gusty winds that resulted in locally significant crop damage.
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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 ABR wrote it up.
A weak front moving across North Dakota helped initiate a few storms in north central South Dakota during the overnight hours. One of these storms was strong enough to generate hail and gusty winds that resulted in locally significant crop damage.
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 Aberdeen, SD wrote its last area forecast discussion before the first event at Aug 1, 11:46 PM CST, 59 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Aberdeen SD 1246 AM CDT Wed Aug 2 2023 .UPDATE... Issued at 1237 AM CDT Wed Aug 2 2023 Aviation discussion updated below for the 06Z TAFs. && .SHORT TERM...(This Evening through Wednesday Night) Issued at 213 PM CDT Tue Aug 1 2023 Forecast challenges include convective chances early this evening, early Wednesday morning and again later Wednesday night, along with temperatures/heat indices. At 1 PM CDT, skies are partly to mostly sunny. Temperatures are warming through the 80s into the low 90s, and winds are generally out of the south at 5 to 15 mph. The cold front forecast to push down across the CWA tomorrow night is analyzed from near Grafton ND down through Linton ND, back across western Corson County and on back into southeast MT. Satellite data and regional 88D mosaic indicates there is a CU field becoming increasingly agitated across Perkins, Corson and Dewey Counties, a couple blips starting to show up on radar. Additionally, a couple showers have developed down between Pine Ridge and Philip. Still thinking that isolated pulse to perhaps multi-cell-type showers/thunderstorms will be possible over this CWA this afternoon into this evening along/near this frontal boundary, as well as in/near the lee-of-the-Black Hills surface trof, west-river. Mesoanalysis depicts an environment of 500-2500J/KG mlCAPE under 25- 30 knots of deep layer shear. No notable low level jets or upper level jet-streaks in play this evening. So, not really expecting any convection over this CWA, if any develops, to persist much past sun- down. Otherwise, not much for convective chances the next couple of days. Stuck underneath this upper level ridge, with limited upstream shortwave coverage. Can't rule out something that could spill over out of North Dakota into the northern tier counties somewhere late tonight/early Wednesday morning. Perhaps the "best" chance for convection comes Wednesday night when a frontal boundary sagging southward into the CWA could serve as a focus for convection. Hot temps that are now in place are sticking around on these south/southeast breezes. At this point, forecast dewpoints are not high enough on Wednesday to make a dent in forecast heat indices. Will continue to monitor forecast trends in dewpoint and their downstream impacts to forecast apparent T's. The previously mention cold frontal boundary slinking southward into the CWA Wednesday night, will signal a wind shift to more of a northeast or north wind and the beginnings of low level CAA that will eventually bring cooler conditions to the region. .LONG TERM...(Thursday through Tuesday) Issued at 213 PM CDT Tue Aug 1 2023 The recent highly amplified mid level flow pattern looks to relax during the long term. Energy moving through the Great Basin and intermountain region will slide across the forecast area come late Thursday through Saturday. Some models suggest an upper low/trof will form over the region as the system advects east in weak flow aloft. The westerlies will be displaced far to the north, with another faction of the upper jet expected to move across the southern CONUS. Despite the broad chances for rain later this week, severe wx chances look minimal. Deep layer shear is nowhere to be found as split upper jets remain north and south of the area. It's even hard to come by much instability with MLCAPEs generally less than a 1k j/kg for much of the period. That said there might be an opportunity Sat afternoon/evening for some healthier convection ahead of slow moving sfc wave/cold front over eastern SD. Temperatures will start the period above normal for Wednesday, but then trend downward for later in the week due to pcpn/cloud cover. Below normal temps look likely for the upcoming weekend. && .AVIATION...(For the 06Z TAFS through 06Z Wednesday Night) Issued at 1237 AM CDT Wed Aug 2 2023 Terminals KABR,KATY,KPIR,KMBG VFR conditions are currently forecast through the TAF period. Watching a cluster of TSRA across southern ND ready to cross into SD. Confidence low on whether or not this makes it to KABR, but will continue to monitor. If intensity holds, brief MVFR VSBY could be possible along with +TSRA and gusty winds around 30 knots around 07Z. && .ABR WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. && UPDATE...TMT SHORT TERM...Dorn LONG TERM...TDK AVIATION...TMT
Hazardous Weather Outlook National Weather Service Aberdeen SD 437 AM CDT Tue Aug 1 2023 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-020945- Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts- Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant- Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo- 437 AM CDT Tue Aug 1 2023 /337 AM MDT Tue Aug 1 2023/ This Hazardous Weather Outlook is for west central Minnesota, central South Dakota, north central South Dakota and northeast South Dakota. .DAY ONE...Today and tonight. Isolated/widely scattered showers and thunderstorms are possible across the area this afternoon. Any storms that develop could be capable of hail up to quarter size and gusty winds. Although, the bigger threat for severe storms is further north across North Dakota. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. TMT
Special Weather Statement
National Weather Service Aberdeen SD
1255 AM CDT Wed Aug 2 2023
SDZ005-020630-
McPherson SD-
1255 AM CDT Wed Aug 2 2023
...A strong thunderstorm will impact portions of northwestern
McPherson County through 130 AM CDT...
At 1255 AM CDT, Doppler radar was tracking a strong thunderstorm near
Venturia, or 12 miles north of Eureka, moving southeast at 20 mph.
HAZARD...Winds in excess of 40 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
New Town Corner.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4594 9929 4575 9933 4574 9952 4594 9966
TIME...MOT...LOC 0555Z 328DEG 18KT 4595 9959
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH
ConnellyThe Aberdeen radar (KABR), 92 km away, was scanning. The volume nearest the first event began at 06:43 UTC.
1 hail. Local standard time, as filed.
Hail to the size of quarters combined with wind gusts of 50 to 60 mph resulted in significant crop damage 2 mines north northeast of Hillsview.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2023Every state in 2023This day in weather historyWarnings in South Dakota, August 2023
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: 1113485.