A fairly average month for precipitation and temperature led to only spotty improvement in drought conditions.
Every event with a place to put it; 4 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.
A fairly average month for precipitation and temperature led to only spotty improvement in 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 Apr 30, 9:18 PM CST, 2 hours 42 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Sioux Falls SD 1018 PM CDT Sat Apr 30 2022 .SHORT TERM...(This Evening through Sunday Night) Issued at 357 PM CDT Sat Apr 30 2022 Current radar shows rain showers rotating around the surface low. The rain is being aided by weak QG dynamics of differential vorticity advection between 700-400 mb overlapping warm air advection at 850 mb. Some minor amounts of instability, upwards of a few hundred J/Kg are also contributing to a few convective showers around the Minnesota, South Dakota, and Iowa border. There is a weak boundary in that area that could provide some vorticity to generate weak funnels but am not expecting anything more then that. Despite moist neutral lapse rates provided from the rain, current winds and headlines remain on track as mainly unidirectional winds out of the northwest and strong winds of 50+ knot aloft mix through the conditionally stable atmosphere. Should see the rain slowly weaken as it pushes northeast as the QG dynamics and instability wane this evening and overnight. Another 0.5" to 0.75" is likely, mainly in southwest Minnesota, before the rain completely leaves the forecast area overnight. Winds remain breezy as strong northwest winds continue through the night, keeping 30-40 mph gusts going into Sunday. Temperatures will be slow to fall to the mid 30s to low 40 by Sunday morning. Low level stratus will continue through Sunday along with breezy northwest winds. The gradient wind will weaken to 30-35 knots, keeping breezy winds mixing to the surface as static stability decreases. There could also be scattered light rain showers as soundings show a hint of instability in the moist layer based between 900-850mb. This idea is represented nicely in the CAMs as the HRRR, ARW, and NSSL WRF show scattered light showers developing across the forecast area. Due to this potential, have upped PoPs on Sunday afternoon to 20-30%. High temperatures should span from the mid 40s in southwest Minnesota to the mid 50s by the Mo River. Temperatures could be a bit higher along the Mo River if clouds clear faster than expected. Will monitor trends and update as needed. Winds finally die down by late Sunday evening as winds aloft weaken. Winds turn out of the north overnight Sunday, advecting colder air into the forecast area. The cold air advection will drop low temperatures down to the 30s, keeping low temperatures on the order of 5 or so degrees below climatology. .LONG TERM...(Monday through Saturday) Issued at 357 PM CDT Sat Apr 30 2022 The next chance for precipitation arrives on Monday and the next upper wave approaches the region. There is good agreement amongst the models that the bulk of the system will pass to our south. However, there still looks to be a good chance for rain to return to the region. Some snow could also mix in with the rain at times, mainly west of the James River where temperatures look to be colder in the mid 30s. Looking at ensemble data, there is a good consensus among the GFS, Canadian, and Euro ensembles for a 70-80% chance for exceeding 0.1" of precipitation along the southern periphery of the forecast area. After the waves moves out by Tuesday, weak upper ridging makes a return for the middle of the week. Despite the ridging, not looking at warmer temperatures as ensembles are in agreement that temperatures remain near seasonable to below average. There could be another chance for precipitation towards the end of the week as another trough moves into the plains. Given differences in the waves location and timing, have left the NBM in the extended to account for the uncertainty. && .AVIATION...(For the 06Z TAFS through 06Z Sunday night) Issued at 1018 PM CDT Sat Apr 30 2022 Weak showers remain scattered across the region, and will continue to be weakening/dissipating throughout the evening and overnight hours. Largely only have MVFR cigs left out there this evening, though a couple IFR cigs are scattered out east of I-29. Cloud coverage, and MVFR cigs, will likely remain through at least the morning hours on Sunday, improving during the afternoon. Winds will continue to remain breezy through Sunday afternoon with gusts up to 35 mph, but should at least remain mostly dry aside from weak scattered sprinkles. && .FSD WATCHES/WARNINGS/ADVISORIES... SD...NONE. MN...NONE. IA...NONE. NE...NONE. && SHORT TERM...Meyers LONG TERM...Meyers AVIATION...APT
Hazardous Weather Outlook National Weather Service Sioux Falls SD 439 AM CDT Sat Apr 30 2022 IAZ001>003-012>014-021-022-032-MNZ071-072-080-081-089-090-097-098- SDZ039-040-054>056-061-062-067-010945- Lyon-Osceola-Dickinson-Sioux-O'Brien-Clay-Cherokee-Buena Vista-Ida- Lincoln-Murray-Cottonwood-Nobles-Jackson-Pipestone-Rock-Kingsbury- Brookings-Miner-Lake-Moody-McCook-Minnehaha- 439 AM CDT Sat Apr 30 2022 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota, east central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. On and off showers and thunderstorms will be likely through the evening, with brief heavy downpours possible at times. Northwesterly winds will also be quite breezy today, with gusts as high as 35 to 45 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Breezy northwesterly winds continue Sunday, with gusts between 25 to 35 mph possible at times. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ052-057-058-063-064-010945- Jerauld-Brule-Aurora-Charles Mix-Douglas- 439 AM CDT Sat Apr 30 2022 This Hazardous Weather Outlook is for central South Dakota and south central South Dakota. .DAY ONE...Today and tonight. On and off showers and thunderstorms will be likely through the evening, with brief heavy downpours possible at times. Northwesterly winds will also be quite breezy today, with gusts as high as 45 to 55 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Breezy northwesterly winds continue Sunday, with gusts between 25 to 35 mph possible at times. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ020-031-NEZ013-014-SDZ038-053-059-060-065-066-068>071-010945- Plymouth-Woodbury-Dixon-Dakota-Beadle-Sanborn-Davison-Hanson- Hutchinson-Turner-Bon Homme-Yankton-Clay-Union- 439 AM CDT Sat Apr 30 2022 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, northeast Nebraska, east central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. On and off showers and thunderstorms will be likely through the evening, with brief heavy downpours possible at times. Northwesterly winds will also be quite breezy today, with gusts as high as 45 to 55 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Breezy northwesterly winds continue Sunday, with gusts between 25 to 35 mph possible at times. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ050-010945- Gregory- 439 AM CDT Sat Apr 30 2022 This Hazardous Weather Outlook is for south central South Dakota. .DAY ONE...Today and tonight. On and off showers and thunderstorms will be likely through the evening, with brief heavy downpours possible at times. Northwesterly winds will also be quite breezy today, with gusts as high as 60 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Breezy northwesterly winds continue Sunday, with gusts between 25 to 35 mph possible at times. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
The national radar mosaic for the moment the first event began.
4 drought. Local standard time, as filed.
Severe (D2) drought improved to moderate (D1) drought early in May, with assistance of 1 to 2 inches of rainfall during the first week of the month. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Severe (D2) drought persisted through May with periodic lighter precipitation which totaled from 75 to 100 percent of normal, and near normal temperatures. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Severe (D2) drought improved to moderate (D1) drought early in May, with assistance of 1 to 2 inches of rainfall during very late April and the first few days of the month. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
Severe (D2) drought persisted through May with cooler temperatures and periodic precipitation which totaled around 75 percent of normal, balanced by warmer than normal temperatures and drier conditions at the end of the month. Crop damage is an estimate from insured losses. Information provided by the United States Department of Agriculture.
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, May 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: 1025204, 1025205, 1025206, 1025208.