During the first week of the month, two storm systems moved out of the southern Plains. 5 inches.
Every event with a place to put it. 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 PAH wrote it up.
During the first week of the month, two storm systems moved out of the southern Plains. Scattered showers and thunderstorms brought around an inch of rain on average, while a few locations received up to 2.5 inches. Rises on the Ohio River were sufficient for some minor flooding in a few areas.
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 Paducah, KY wrote its last area forecast discussion before the first event at May 12, 5:14 PM CST, 4 hours 31 minutes earlier.
Area Forecast Discussion National Weather Service Paducah KY 614 PM CDT Thu May 12 2022 .UPDATE... Updated aviation section for 00z taf issuance && .SHORT TERM...(Tonight through Saturday night) Issued at 235 PM CDT Thu May 12 2022 The upper ridge axis remains parked over the Mid Mississippi Valley this afternoon. This is resulting in another day of record/near record high temperatures with values in the 87-92 range. However, drier air associated with surface high pressure across the northeast U.S. has funneled into the Pennyrile region of west KY, southwest IN, and southeast IL on easterly low level flow. This has caused quite the dewpoint gradient from east to west. Comfortable values in the upper 40s to mid 50s are present from the KEVV to KHOP corridor, while low 70s remain in place across the west half of the region. The aforementioned drier air will continue working westward through the night, but really struggles to take hold over southeast Missouri. While dewpoints may lower to near 60 briefly late tonight, they will quickly rebound in this area tomorrow morning. On Friday, we lose the influence of the upper ridge. Weak convergence develops as we are sandwiched in between an upper low pressure system across the southeast U.S. and increasing westerly flow moving in from the Plains associated with shortwave troughing moving through the Northern Plains. Along the moisture/instability axis from Arkansas up into Missouri, scattered convection is likely to develop. Guidance is suggesting an initial flare up possible in the morning before additional activity later in the day/evening. Can't rule out a storm that briefly pulses up to near severe levels, but wind shear is really lacking (20 kts or less through the column). Rain chances will increase east of the Mississippi River Friday night into Saturday as the upper flow becomes west/northwesterly and weak shortwave energy moves across the area. Wind fields will be slightly stronger on Saturday, but still below 25 kts through the column. Thus, while a few stronger storms may be possible, the severe threat appears quite low. Saturday night looks primarily dry, as the shortwave moves east of the area. While slightly cooler air will be present on Friday, we are likely still to warm into the mid to upper 80s. Saturday presents a bit cooler solution, with readings only in the low 80s. .LONG TERM...(Sunday through Thursday) Issued at 235 PM CDT Thu May 12 2022 There is fairly high confidence in a slightly cyclonic or nearly zonal flow for much of next week after a brief period of more northwest flow Sunday. A substantial upper trough will move into the Great Lakes Sunday and that will eventually push drier air into the Quad State, but not before we have another round of showers and thunderstorms Sunday into Sunday night. A few stronger storms cannot be ruled out, especially if we can get some stronger flow in the mid and upper- levels. However, locally heavy rainfall and lightning will be the primary concerns. There is a strong consensus for surface high pressure and northwest flow aloft to lead to a dry day across the region Monday. Unfortunately the flow will relax and become quasi-zonal for the rest of the week. Much of the guidance indicates that a healthy disturbance will move out of the Rockies Tuesday and bring scattered showers and storms back to at least western portions of the region. Thereafter, a flat ridge takes over the southern half of the country and that could push later disturbances farther north, possibly north of our region. The NBM has chance PoPs Tuesday through Thursday with the best PoPs in our northern counties. Confidence in timing periods of convection is rather low given the usual limitations of zonal flow patterns. At this time, there does not appear to be much concern for severe weather, but we will keep an eye on it. As for temperatures we will generally be at or above normal through the period. In general, highs will be in the 80s and lows will be in the 60s. By Wednesday and Thursday, as the upper ridge nudges up toward the region and south winds increase, highs will climb back up into the upper 80s. && .AVIATION... Issued at 614 PM CDT Thu May 12 2022 VFR conditions will continue. East winds around 5 knots tonight will become southeast on Friday at 5 to 10 kt. Much drier air has moved into many areas east of the Mississippi River, which has eliminated most cumulus clouds. Where moisture is higher in se Missouri, some late night or early morning fog cannot be ruled out. However, there should be enough wind to prevent significant fog. Fog will be kept out of the kcgi taf for now. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...None. MO...None. IN...None. KY...None. && SHORT TERM...SP LONG TERM...DRS AVIATION...MY
Hazardous Weather Outlook National Weather Service Paducah KY 304 PM CDT Thu May 12 2022 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-132015- Jefferson-Wayne IL-Edwards-Wabash-Perry IL-Franklin-Hamilton- White-Jackson-Williamson-Saline-Gallatin-Union-Johnson-Pope- Hardin-Alexander-Pulaski-Massac-Gibson-Pike-Posey-Vanderburgh- Warrick-Spencer-Fulton-Hickman-Carlisle-Ballard-McCracken-Graves- Livingston-Marshall-Calloway-Crittenden-Lyon-Trigg-Caldwell- Union KY-Webster-Hopkins-Christian-Henderson-Daviess-McLean- Muhlenberg-Todd-Perry MO-Bollinger-Cape Girardeau-Wayne MO-Carter- Ripley-Butler-Stoddard-Scott-Mississippi-New Madrid- 304 PM CDT Thu May 12 2022 This Hazardous Weather Outlook is for portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. .DAY ONE...This Afternoon and Tonight Minor flooding will continue on portions of the mid Mississippi and lower Ohio Rivers. .DAYS TWO THROUGH SEVEN...Friday through Wednesday A chance of thunderstorms is forecast across southeast Missouri on Friday and across the entire area Friday night through Sunday. Additional thunderstorm chances return Tuesday and Wednesday. Locally heavy rainfall and lightning will be the primary concerns. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated at this time.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Minor flooding occurred on the Ohio River. Some low-lying fields were underwater.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2022Every state in 2022This day in weather historyWarnings in Illinois, 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: 1024941.