Persistent lack of rainfall and normal to above normal temperatures lead to the expansion of severe drought conditions acorss portions of Iowa.
Every event with a place to put it; 5 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.
Persistent lack of rainfall and normal to above normal temperatures lead to the expansion of severe drought conditions acorss portions of Iowa.
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 Sep 13, 5:29 AM CST, 1 hour 31 minutes earlier.
Area Forecast Discussion National Weather Service Des Moines IA 629 AM CDT Tue Sep 13 2022 ...Updated for the 12z Aviation Discussion... .DISCUSSION.../Today through Monday/ Issued at 344 AM CDT Tue Sep 13 2022 Forecast Highlights: --Gradually warming temperatures into mid-week, mainly quiet and dry. --Shower/storm chances return late week into weekend. TODAY: Upper-level flow has turned northwesterly with the upper-level low pressure continuing to move eastward over the Great Lakes Region and an upper-level ridge over the Western US. At the surface, high pressure conditions have moved into Iowa making winds light and variable with clear skies overhead. This has two impacts: 1) minimum temperatures are expected to drop off overnight with the radiational cooling, into the 40s to low 50s, and 2) some patchy low level radiation fog has started to form, especially over areas north, underneath a thermal inversion despite fairly dry profiles in forecast soundings. The inversion will break down by about mid morning ending any lingering patchy fog with an otherwise nice day in store. Temperatures are expected to rebound into the upper 70s to mid 80s by the afternoon after the chilly start this morning with plenty of sunshine. The northwest flow aloft will bring smoke with it, however, from wildfires in the western US. Although smoke will filter in through much of the day aloft, the greatest concentrations look to arrive Tuesday evening into Wednesday. This smoke could create some filtered sunshine at times today, and accounted for such by adding in a little cloud cover, but generally not expecting high temperatures to be affected much with the greater concentrations arriving after peak heating. Sunsets this evening may be quite vibrant, though. REST OF WEEK: The upper-level ridge moves overhead into Wednesday keeping the forecast quiet and dry into Thursday before precipitation chances return late Thursday/early Friday into the weekend. Multiple weak waves moving through the upper-level southwesterly flow on the backside of the ridge will create off and on chances for showers/storms. Details on timing are not well refined at this time in the deterministic models, but NBM PoPs are likely too robust through the weekend. Temperatures are expected to gradually increase into Wednesday as mid-level flow becomes southerly with temperatures in the 80s looking to persist into the weekend. An increasing pressure gradient over the area will increase surface winds on Wednesday with gusts out of the south 20-25 mph and even more so on Thursday as gusts near 30+ mph. Clouds will also start to increase on Thursday ahead of the approaching boundary/train of shortwaves. Additional details to be provided on the late week/weekend shower/storm chances in the coming days. && .AVIATION.../For the 12Z TAFS through 12Z Wednesday morning/ Issued at 620 AM CDT Tue Sep 13 2022 Patchy low-level fog has developed over portions of the area but impacts to TAF sites directly remain limited. Brief drop in visibility will remain possible, especially at northern sites, for a few more hours underneath an inversion which is expected to break by mid morning. Otherwise, expecting VFR conditions to continue through the TAF period with some patchy high clouds. Smoke should also become apparent aloft today into Wednesday which could lead to some obscurations at times. Light and variable winds this morning will become out of the south to southeast this afternoon but will remain near/under 5 knots. && .DMX WATCHES/WARNINGS/ADVISORIES... NONE. && DISCUSSION...KCM AVIATION...KCM
Hazardous Weather Outlook National Weather Service Des Moines IA 518 AM CDT Tue Sep 13 2022 IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075- 081>086-092>097-141030- 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- 518 AM CDT Tue Sep 13 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 Showers and thunderstorms are possible Friday into the weekend. Details on timing and coverage will continue to be evaluated in the next two days. At this time the risk of severe storms appears to be low. .SPOTTER INFORMATION STATEMENT... Spotter activation is not needed at this time.
The national radar mosaic for the moment the first event began.
5 drought. Local standard time, as filed.
Severe drought expanded into portions of Sac county during the month as lack of rainfall continued across much of the county.
Severe drought expanded into portions of Calhoun county during the month as lack of rainfall continued across much of the county.
Severe drought expanded into portions of Webster county during the month as lack of rainfall continued across much of the county.
Severe drought expanded into portions of Wayne county during the month as lack of rainfall continued across much of the county.
Severe drought expanded into portions of Decatur county during the month as lack of rainfall continued across much of the county.
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, September 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: 1054802, 1054803, 1054804, 1054805, 1054806.