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; 2 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 19, 9:23 PM CST, 2 hours 37 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Sioux Falls SD 1023 PM CDT Mon Jun 19 2023 .SHORT TERM...(This Evening through Tuesday) Issued at 232 PM CDT Mon Jun 19 2023 KEY MESSAGES 1) Hot, dry and breezy today and Tuesday, which could lead to elevated fire danger in areas where rainfall has been lacking and fuels are starting to dry out/cure. 2) Thunderstorm chances begin to move into western parts of the CWA Tuesday night-Wednesday, but severe weather is not expected in our forecast area. 3) Thunderstorm chances gradually shift east late week into the weekend, but lingering uncertainty regarding timing and extent of greater rain chances. Tonight: Not much of consequence overnight as forecast soundings show BL should decouple enough to allow at least some weakening of the broader wind field. However, flow above 900 mb remains above 30 kts so could see some more sporadic gusts at the surface. Lows in the mid 60s to even lower 70s expected. Tuesday: Not much of change to that of Monday's values although winds may end up a touch higher. At the same time, ample mixing will push afternoon highs into the upper 80s to upper 90s and drive afternoon relative humidity values into the 28-38 percent range in many areas. While broader greenness values likely prevent too high of concern for fire weather conditions, any localized more widespread cured fuels could be of note. At a larger scale, first weak wave rides up in the western flank of the upper level ridge late Tuesday into Tuesday night. This likely results in scattered convection West River that may try to meaner eastward into early Wednesday with its propagating cold pool. Will keep any POPs confined west of the James River through Tuesday night. .LONG TERM...(Tuesday Night through Monday) Issued at 232 PM CDT Mon Jun 19 2023 Wednesday thru Friday: Overall, a period that could be described as warm and mostly dry in many areas. Temperatures at 850 mb would support daily afternoon highs in the 80s to lower 90s, baring any local convective contamination. In terms of those convection chances; much will depend on low level boundary/outflow location(s) and influence from previous night's convection. Overall at a synoptic scale, areas of west of I-29 and perhaps even more so west of the James River look most favored for occasional scattered showers/storms. Friday night through Sunday: More robust shortwave should spill into the Central US by the weekend, finally driving the low level boundary eastward. This may ultimately be the best chance for more widespread precipitation chances. Temperatures will also take a setback behind the boundary passage later in the weekend. && .AVIATION...(For the 06Z TAFS through 06Z Tuesday Night) Issued at 1022 PM CDT Mon Jun 19 2023 VFR through the period. Gusty south winds to around 30 mph expected, especially during the daylight hours. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...None. MN...None. IA...None. NE...None. && SHORT TERM...Kalin LONG TERM...Kalin AVIATION...08
Hazardous Weather Outlook National Weather Service Sioux Falls SD 345 AM CDT Mon Jun 19 2023 SDZ038-050-052-053-057>059-063-064-200845- Beadle-Gregory-Jerauld-Sanborn-Brule-Aurora-Davison-Charles Mix- Douglas- 345 AM CDT Mon Jun 19 2023 This Hazardous Weather Outlook is for central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Temperatures and heat index readings will climb into the mid to upper 90s today. The hot temperatures, combined with low humidity levels and gusty southerly winds may result in elevated fire danger in areas where grasses are drying due to lack of sufficient rainfall. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Similar conditions with heat and locally elevated fire danger will persist into Tuesday. Thunderstorms may move into the region by Tuesday night or Wednesday, with periodic storm chances continuing into the weekend. The risk of severe weather remains low through at least Thursday, with more uncertainty regarding the potential for severe weather as we head into the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ001>003-012>014-020>022-031-032-MNZ071-072-080-081-089-090-097- 098-NEZ013-014-SDZ039-040-054>056-060>062-065>071-200845- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Plymouth-Cherokee- Buena Vista-Woodbury-Ida-Lincoln-Murray-Cottonwood-Nobles-Jackson- Pipestone-Rock-Dixon-Dakota-Kingsbury-Brookings-Miner-Lake-Moody- Hanson-McCook-Minnehaha-Hutchinson-Turner-Bon Homme-Yankton-Union- 345 AM CDT Mon Jun 19 2023 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, northeast Nebraska, east central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Hazardous weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Thunderstorms may move into the Interstate 29 corridor by Wednesday night or Thursday, with periodic storm chances expanding east into the weekend. The risk of severe weather remains low through at least Thursday, with more uncertainty regarding the potential for severe weather as we head into the weekend. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
2 drought. Local standard time, as filed.
Moderate (D1) drought conditions worsened to severe (D2) conditions during late June.
Moderate (D1) drought conditions worsened to severe (D2) conditions during late 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: 1104183, 1104184.