Conditions averaged warm (2 to 4 degrees above normal) and dry (50-75 percent of normal) across northwest Iowa during June and resulted in up to a slight worsening of drought conditions.
Every event with a place to put it; 1 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.
Conditions averaged warm (2 to 4 degrees above normal) and dry (50-75 percent of normal) across northwest Iowa during June and resulted in up to a slight worsening of drought conditions.
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 12, 9:02 PM CST, 2 hours 58 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Sioux Falls SD 1002 PM CDT Mon Jun 12 2023 .SHORT TERM...(This Evening through Tuesday) Issued at 207 PM CDT Mon Jun 12 2023 KEY MESSAGES 1) Quiet conditions and warm temperatures persist through the middle of the week. 2) Some upper level wildfire smoke may be present beginning tonight, mainly west of I-29 3) Potential for thunderstorms from late Thursday and especially into Friday night. Severe weather is unlikely. Tonight: Vertically stacked closed low over the Great Lakes will continued to keep the flow over the more immediate region fairly stagnant. At the same time, surface high pressure centered to our south will keep for quiet conditions overnight. With a northerly trajectory, and current satellite imagery showing smoke again pooling across Canada, we should see some upper level wildfire smoke drift back into areas mainly west of I-29 later tonight. Both RAP and HRRR near surface guidance suggest any surface impacts should remain to our north. Tuesday and Wednesday: No real change as we enter Tuesday into Wednesday with likely some murkier skies, mainly west of I-29, and quiet conditions. Temperatures at 850 mb sneak up for Tuesday and thus afternoon surface highs also push more into the mid to upper 80s, even some lower 90s by midweek. .LONG TERM...(Tuesday Night through Monday) Issued at 207 PM CDT Mon Jun 12 2023 Thursday and Friday: Upper level ridge axis becomes centered overhead by the later half of the work week and should help to keep temperatures well above normal for Thursday. Surface front leaks into central SD with convection possible along and behind it. At this time, don't suspect any of this precip gets further east than the James Valley through Thursday night. Temperatures Friday will be dependent on cloud cover, convective debris from overnight and how far/fast the previously mentioned front progresses through the daytime hours. Nonetheless, later Friday into the first half of Friday night may ultimately feature our best precipitation chances through the period. Shear ahead of the boundary may limit any severe potential with better post-frontal shear then tandem with less favorable instability profiles. Saturday and Sunday: Surface high again temporarily established behind departing mid/upper level wave into the weekend with a return to quiet conditions. Saturday's fairly comfortable temperatures may again be replaced by warmer values back in the mid 80s to lower 90s by Sunday. && .AVIATION...(For the 06Z TAFS through 06Z Tuesday Night) Issued at 1001 PM CDT Mon Jun 12 2023 VFR conditions will prevail through the TAF period. Canadian wildfire smoke streams southward through the region overnight and into Tuesday, mainly west of the Interstate 29 corridor tonight. Winds will be light and westerly overnight, becoming more northwesterly Tuesday. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. IA...None. NE...None. && SHORT TERM...Kalin LONG TERM...Kalin AVIATION...BP
Hazardous Weather Outlook National Weather Service Sioux Falls SD 308 AM CDT Mon Jun 12 2023 IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ038>040-050-052>071-130815- 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- 308 AM CDT Mon Jun 12 2023 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 No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday Scattered thunderstorms will be possible on late Thursday afternoon through Friday night. However, severe weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
1 drought. Local standard time, as filed.
Moderate (D1) drought conditions worsened to severe (D2) conditions during mid June.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2023Every state in 2023This day in weather historyWarnings in Iowa, June 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: 1104180.