An unusually intense upper-level trough and surface low was located across southern Canada and moved toward the northern Great Lakes with a very deep mixed-layer across the Northern Plains. Synoptic winds gusted mainly 45 to 55 mph, with a few spots reaching around 60 mph in southwest Minnesota and east central South Dakota.
Every event with a place to put it; 21 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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.
An unusually intense upper-level trough and surface low was located across southern Canada and moved toward the northern Great Lakes with a very deep mixed-layer across the Northern Plains. Synoptic winds gusted mainly 45 to 55 mph, with a few spots reaching around 60 mph in southwest Minnesota and east central South Dakota.
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 Jun 6, 5:02 AM CST, 5 hours 58 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Sioux Falls SD 602 AM CDT Thu Jun 6 2024 .KEY MESSAGES... - Breezy northwest winds with gusts up into the lower 40s possible. Strongest gusts are expected along the Buffalo Ridge given their elevated elevation. - Scattered showers return Friday afternoon into Saturday morning. Probabilities for 0.10" of rain remain below 40%. - Chances for above normal temperatures return late next week as a ridge of high pressure builds across the south. && .DISCUSSION... Issued at 358 AM CDT Thu Jun 6 2024 Early morning satellite imagery shows clear skies across our area, with a surface high pressure sliding southeastwards off to our west. With a strong surface low pressure remaining well off to our northeast, the surface pressure gradient between these two features remains elevated today. While winds during the remaining early morning hours will remain in the teens, as the inversion weakens throughout the rest of the morning hours after sunrise, we will again see stronger winds aloft brought down to the surface. Currently expecting wind gusts of 35 mph up into the lower 40s, though if we are more mixy than currently expected winds could end up above 45 mph. While the ensemble situational awareness tables (ESATs) again shows winds at 850mb at the 90th percentile of climatology for today, models are showing that 850mb winds do not mix down through the 925mb layer...so it seems the winds will purely be based on the surface pressure gradient. Have thus kept winds just shy of advisory level, but day shift will need to monitor the observations to see if an advisory is needed. Temperatures in the lower 70s are expected across SW MN, warming up into the lower 80s for areas along the Missouri River Valley. Friday will see the surface high pressure expand into a ridge as it traverse the region eastwards, which will swing the winds around to become out of the southeast. As a weak surface low pressure develops quickly on the backside of the ridge, mid-level warm-air advection (WAA) develops as a weak shortwave moves across the region, resulting in scattered light showers possible along the Missouri River Valley throughout the day. Otherwise, afternoon temperatures remain in the mid 70s to lower 80s. Chances for scattered light showers extend northwards overnight into Saturday as a weak mid- level low moves overhead. Probabilities for 0.10" of rain overnight remain below 40%, with highest chances along the SD/NE border. A surface high pressure dives southwards on Saturday, ending chances for rain by Saturday morning. The surface high will have brought slightly cooler temperatures along with it, resulting in afternoon highs for Saturday and Sunday expected to remain below average in the lower to upper 70s. Will likely see a shortwave at some point early next week resulting chances for rain, with models currently indicating this should happen Monday night into Tuesday. Otherwise, models have continued to show a mid-level ridge expanding into the central plains mid- week, which will increase chances for above normal temperatures and increased chances for below normal precipitation. && .AVIATION /12Z TAFS THROUGH 12Z FRIDAY/... Issued at 601 AM CDT Thu Jun 6 2024 VFR conditions expected throughout the period, with winds again the main aviation concern for today. Throughout the morning hours, winds will be increasing in strength into the upper 30s to lower 40s. Winds will remain breezy into the mid afternoon hours before decreasing into the evening. Areas east of I-29 may see some LLWS overnight into Friday, as surface winds remain light as they turn westerly and winds 2,000 ft AGL out of the northwest at 30 knots. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. IA...None. NE...None. && DISCUSSION...APT AVIATION...APT
Hazardous Weather Outlook National Weather Service Sioux Falls SD 457 AM CDT Thu Jun 6 2024 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ038>040-050-052>071-071000- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Beadle-Kingsbury-Brookings-Gregory- Jerauld-Sanborn-Miner-Lake-Moody-Brule-Aurora-Davison-Hanson- McCook-Minnehaha-Charles Mix-Douglas-Hutchinson-Turner-Bon Homme- Yankton-Union- 457 AM CDT Thu Jun 6 2024 This Hazardous Weather Outlook is for portions of northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, central South Dakota, east central South Dakota, south central South Dakota, and southeast South Dakota. .DAY ONE...Today and Tonight Breezy northwest winds are again expected today, with gusts 35 mph up into the lower 40s expected. Isolated higher gusts are possible, especially for areas along the Buffalo Ridge in SW MN given their elevated elevation. .DAYS TWO THROUGH SEVEN...Friday through Wednesday No hazardous weather expected. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
20 strong wind, 1 high wind. Local standard time, as filed.
Strong synoptic winds gusted up to 52 mph at Brookings and 51 mph at Volga. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Strong synoptic winds gusted up to 50 mph near Beresford.
Strong synoptic winds gusted up to 51 mph near Irene and 50 mph near Parker.
Strong synoptic winds gusted up to 63 mph 13 miles west of Ward and 50 mph near Flandreau. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Strong synoptic winds gusted up to 54 mph at Sioux Falls.
Strong synoptic winds gusted up to 50 mph near Arlington.
Strong synoptic winds gusted up to 49 mph at Madison.
Strong synoptic winds gusted up to 48 mph near Howard.
Strong synoptic winds gusted up to 51 mph near Cavour, 49 mph at Huron, and 48 mph at Wolsey.
Strong synoptic winds gusted up to 49 mph near Forestburg and 46 mph near Letcher. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Strong synoptic winds gusted up to 48 mph near Lane.
Strong synoptic winds gusted up to 48 mph at Mitchell. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Strong synoptic winds gusted up to 53 mph near Alexandria.
Strong synoptic winds gusted up to 46 mph at Canova.
Strong synoptic winds gusted up to 51 mph 7 miles east of Davis.
Strong synoptic winds gusted up to 47 mph near Gayville.
Strong synoptic winds gusted up to 45 mph 7 miles west-southwest of Beresford.
Strong synoptic winds gusted up to 48 mph at Kimball.
Strong synoptic winds gusted up to 49 mph near Plankinton.
Strong synoptic winds gusted up to 51 mph near Freeman.
Strong synoptic winds gusted up to 47 mph near Corsica.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in South Dakota in 2024Every state in 2024This day in weather historyWarnings in South Dakota, June 2024
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 2026-10-01. Each event’s entry at NCEI: 1198896, 1198940, 1198927, 1198895, 1198897, 1198899, 1198900, 1198902, 1198905, 1198909, 1198911, 1198916, 1198918, 1198922, 1198925, 1198936, 1198939, 1198912, 1198913, 1198931, 1198933.