Severe Drought continued its expansion into portions of southern Iowa by late in June with dry and very warm weather.
Every event with a place to put it; 3 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 DMX wrote it up.
Severe Drought continued its expansion into portions of southern Iowa by late in June with dry and very warm weather.
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 Des Moines, IA wrote its last area forecast discussion before the first event at Jun 27, 5:32 AM CST, 1 hour 28 minutes earlier.
Area Forecast Discussion National Weather Service Des Moines IA 632 AM CDT Tue Jun 27 2023 ...Updated for the 12z Aviation Discussion... .DISCUSSION.../Today through Monday/ Issued at 409 AM CDT Tue Jun 27 2023 Key Messages: - A few severe storms possible tonight with damaging winds. - Periodic chances for storms Thursday through Saturday with more severe storms and locally heavy rain possible. - Warm and more humid as well through Saturday. High pressure has moved into western Iowa early this morning with light northerly wind to the east and light and variable wind under the system. There has been some light fog under the high as well this morning. West of the high from central Kansas and into South Dakota, return flow with theta-e advection and instability has fueled thunderstorms. The high pressure system will move east today while a short wave trough moves out of the west and into the Western Plains today and through Iowa and Minnesota tonight. This will lead to the western forcing and instability to shift east during this time. Today will be warmer as the high pushes across the state and return flow develops. Likely will be dealing with some blow off cirrus from the western storms, at least this morning and possibly some filtered sunshine elsewhere due to the lingering smoke. A few showers and storms may reach the far west today and cannot totally discount the elevated activity does not move a bit further east than currently forecast. Greater chances for thunderstorms arrive later tonight with storms developing ahead of the short wave over Nebraska and South Dakota and moving into parts of central Iowa after midnight. These storms may be maintaining an attendant damaging wind threat as they arrive. Overall it seems the CAMs and other solutions may be weakening this convection too soon with descent forcing and instability over central Iowa tonight. Also not completely sold on the projected easterly motion as any rooted storms may follow the Corfidi Vectors and dive southeast along the instability axis which would also promote maintaining strength. The elevated mixed layer is expected to move into Iowa behind the storms on Wednesday and should create a capping inversion across much of the state. The weakest capping will be over the northeast. At this time, it appears storms may develop over Minnesota during the afternoon then may drop southeast and clip into northeast Iowa as a boundary moves into the state. The cap should remain intact for much of central Iowa. For the rest of the week, the upper high pressure center will gravitate south into the lower Mississippi valley leaving Iowa in the active region with numerous impulses passing through the region. High temperatures will generally be in the 80s and 90s Thu and Fri before another boundary passes through that will result in more storm chances Friday night into Saturday. A few severe storms will be possible during the period and tis the season for damaging winds. Locally heavy rainfall may occur as well with PWATs routinely above 1.50 inches through Saturday. Surface moisture will be on the increase as well with dew points rising into the 60s and low 70s leading to more humidity. && .AVIATION.../For the 12Z TAFS through 12Z Wednesday morning/ Issued at 627 AM CDT Tue Jun 27 2023 Low lying fog early in the period should dissipate quickly. Mid- level cloudiness will be on the increase today and there is a low chance for a few showers near KFOD today. Thunderstorms are possible after midnight though overall confidence is low enough to not mention in this forecast. Light and variable wind early today will gradually become more east/southeast through the period. && .DMX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION...Donavon AVIATION...Donavon
Hazardous Weather Outlook National Weather Service Des Moines IA 417 AM CDT Tue Jun 27 2023 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-280930- Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo- Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun- Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene- Boone-Story-Marshall-Tama-Audubon-Guthrie-Dallas-Polk-Jasper- Poweshiek-Cass-Adair-Madison-Warren-Marion-Mahaska-Adams-Union- Clarke-Lucas-Monroe-Wapello-Taylor-Ringgold-Decatur-Wayne- Appanoose-Davis- 417 AM CDT Tue Jun 27 2023 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight Thunderstorms are expected overnight tonight. A few strong to severe storms are possible, with strong winds being the primary threat and hail being a secondary threat. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms continue through Wednesday morning with additional storms developing Wednesday night and into Thursday morning. Some storms in the afternoon and evening may be severe. All severe hazards are possible, but hail and wind will be the primary threats. Intermittent thunderstorm chances continue through the weekend. Severe potential with late week and weekend storms will be evaluated in the coming days. .SPOTTER INFORMATION STATEMENT... Spotters may be needed at times starting late tonight into the weekend. Dodson
The national radar mosaic for the moment the first event began.
3 drought. Local standard time, as filed.
Severe drought conditions expanded into Mahaska County by the end of June with dry and very warm weather later in June.
Severe drought conditions expanded into Marion County by the end of June with dry and very warm weather later in June.
Severe drought conditions expanded into Clarke County by the end of June with dry and very warm weather later in 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: 1108418, 1108419, 1108421.