Dryness expanded along portions of Iowa near the Missouri border by late in the month.
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.
Dryness expanded along portions of Iowa near the Missouri border by late in the month.
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 Aug 30, 5:24 AM CST, 1 hour 36 minutes earlier.
Area Forecast Discussion National Weather Service Des Moines IA 624 AM CDT Tue Aug 30 2022 ...Updated for the 12z Aviation Discussion... .DISCUSSION.../Today through Monday/ Issued at 400 AM CDT Tue Aug 30 2022 Key Messages: -Mild Weather Through Middle of this Week -Forecast Currently Dry, But Watching for Wed/Thurs Rain -Better Rain Chances Friday and Saturday Discussion: Trough axis and trailing cold front has cleared Iowa to the east and southeast leaving behind mostly clear skies during the overnight hours. An amplified mid and upper-level ridge is developing over the western portion of the CONUS and will leave Iowa downstream in area of stronger AVA for the next couple of days. As a result, expect subsidence to keep skies clearer and allow surface high pressure to develop. Temperatures this afternoon are expected to the reach the lower 80s for central and southern Iowa, with northern Iowa in the upper 70s. Wednesday, a short-wave trough will propagate over the top of the ridge axis and into the Central Plains. Current deterministic GFS and NAM develop convection with this, but dissipate all activity before it crosses the Missouri River Valley. Therefore, will be maintaining a dry forecast for Iowa on Wednesday. Currently, temperatures are forecast to reach the mid to upper 80s on Wednesday afternoon. However, even with the dry forecast with respect to precipitation, clouds may advect into Iowa Wednesday afternoon, which could substantially limit insolation and hold surface temperatures back by several degrees. It is currently unknown how far east these impacts will travel though, so therefore will maintain the forecast of mid to upper 80s until confidence increases in something that could result in temperature hindrance. The same can be said for Thursday. The short-wave trough will move through Iowa and provide some modest forcing as the height falls begin. However, model soundings continue to indicate a rather dry profile below 700 mb, therefore limiting precipitation chances greatly. However, depending on Wednesday Night's activity, there may be enough lingering mid-level moisture to promote more cloud cover which could once again limit Thursday's temperatures. Given the low confidence in precipitation activity across the Plains, have not made any drastic changes to temperatures for Thursday. 00z ensemble runs have not provided any persistent signal to indicate an increasing moisture trend at this time for the middle of this week. Probabilities for a tenth of an inch do not exceed 20 percent through Thursday afternoon. Friday, a trough with a stronger vorticity max is progged to move across Saskatchewan and Manitoba which will slow the progress of the short-wave that entered Iowa on Thursday. While the main forcing remains northward, this will have a cold front extending southward into the central CONUS. By this time, there should be stronger moisture return to the area ahead of the front, resulting in more widespread precipitation chances by Friday afternoon. Ensemble probabilities for at least a tenth of inch of QPF Friday through Saturday is around 50 percent. This will then continue into Saturday. Beyond Saturday, a troughing pattern over the eastern Pacific will push the ridge axis eastward and subsequent forcing is pushed northward away from the area, leading to an overall quiet weather pattern. && .AVIATION.../For the 12Z TAFS through 12Z Wednesday morning/ Issued at 621 AM CDT Tue Aug 30 2022 VFR conditions are forecast for the 12z TAF period across central Iowa. Winds will be between 5 and 10 knots, with few gusts to around 15 kts possible. There was some concern for fog this morning, however, recent satellite trends indicates only a small area in southwest Iowa. There have been no other visibility restrictions at Central Iowa Airports this morning. && .DMX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION...Krull AVIATION...Krull
Hazardous Weather Outlook National Weather Service Des Moines IA 325 AM CDT Tue Aug 30 2022 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-310830- 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- 325 AM CDT Tue Aug 30 2022 This Hazardous Weather Outlook is for portions of central Iowa. .DAY ONE...Today and tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Isolated thunderstorms are possible Friday and Friday night. The severe weather threat will be assessed through the week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed.
The national radar mosaic for the moment the first event began.
3 drought. Local standard time, as filed.
Decreasing rainfall and normal to above normal temperatures lead to the expansion of severe drought into portions of Lucas county by the 30th of August.
Decreasing rainfall and normal to above normal temperatures lead to the expansion of severe drought into portions of Appanoose county by the 30th of August.
Decreasing rainfall and normal to above normal temperatures lead to the expansion of severe drought into portions of Davis county by the 30th of August.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2022Every state in 2022This day in weather historyWarnings in Iowa, August 2022
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: 1054706, 1054707, 1054708.