A weak cold front over eastern Missouri triggered numerous showers and thunderstorms. Some of these storms were very slow-moving and produced copious amounts of rain.
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.
A weak cold front over eastern Missouri triggered numerous showers and thunderstorms. Some of these storms were very slow-moving and produced copious amounts of rain.
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 Jun 4, 1:31 AM CST, 10 hours 29 minutes earlier.
Area Forecast Discussion National Weather Service Paducah KY 231 AM CDT Sun Jun 4 2017 .SHORT TERM...(Today through Tuesday night) Issued at 230 AM CDT Sun Jun 4 2017 07Z Surface meso analysis shows a course low pressure circulation on the order of 1012 MB just south and west of Memphis. This surface reflection was within a broader and deeper southwesterly aloft fetch of moisture advecting from the Gulf across much of the lower and mid Mississippi river valley, ahead of the parent Low aloft whose circulation center is seen nicely via GOES R water vapor imagery over western Kansas/Oklahoma. Further analysis shows a tongue of rich theta-e air that noses 70F dew points into the SEMO/Ozarks counties...where Radar has indicated active convection for a few hours now. HRRR depicts a weak disturbance assisting the lift of this available moisture, but lightning strikes are minimal, working mainly elevated instability via weak isentropic upglide in the weakly sheared flow. MRMS does indicate some pixeling of efficient rainfall rates approaching 2 inches/hour at times, so it's an area to watch for accumulation rates, given the slow northward drift due to the weak steering. FFMP monitor reveals most saturated areas remain below 75 percent of FFG alerts for now, in the 1-3 hour monitor. HRRR models the pcpn nicely, as it has the past few nights, and effectively shifts the area to the north and east with time this early morning, eventually dispersing the vort energy as it rides into the slight ridging of higher heights not far downstream. GOES-R IR imagery detects warming tops already, so this modeled diminishing trend with northeastward drift would appear to be on point. With time, we see the models still support slow/gradual warm and moist air advection working eastward, across the remainder of the FA. Even the wedge of drier dew points in the u50s-l60s, in our northeast counties, ultimately gives way to some mid-upr 60s by evening. Diurnal fueling will assist uplift from any weak perturbations still rippling out of the weak flow aloft, and may activate on lingering outflow boundaries or newly heated/enhanced upward lifting parcels from free convective temps being attained. Best Pops today during the peak heating pm hours should range from scattered mid chance cats in the north/east, to likely/numerous areal coverage showers/storms across our southern/western counties, and this has been routinely advertized for several days now. Changing dynamics enter the forecast picture Sunday night-Monday, as the broader moisture laden southern Plains Low gets pinched off by the more vigorous drop of energy from the Great Lakes vortex, which drives a cold front across the Ohio river valley. This fropa will occur slowly during the day Monday into Monday evening, because the driving move of west to east energy aloft is well downstream, across the mid and upper Ohio river valley, and it effectively lags/just drags the cold front on across our area as it trails. The net result is lingering chance Pops along/ahead of the boundary into/thru the day Monday, ending Pops from northwest to southeast with is passage by late Monday into Monday night. Finally, for Tuesday-Tuesday night, we see a more vigorous blast of cooler/drier air incoming behind the front, as the primary vortext sits/spins over the Great Lakes, and drives a reinforcing and refreshing blast of Canadian air well to the south/across the bulk of the Ohio river valley. A 15 to 20F drop in dew points in the 24 hour period from Monday to Tuesday will signal this refreshing change to our early June airmass. .LONG TERM...(Wednesday through Saturday) Issued at 230 AM CDT Sun Jun 4 2017 The mean five wave pattern keeps the WFO PAH forecast area within the eastern limb of the mean ridge through this Friday, with some modification Friday night into Saturday into a trough, with heights rising on Sunday. In collaboration with surrounding offices attempted to keep run to run continuity with the upper ridge dominating the forecast area. The ECMWF, Canadian, and GFS deterministic runs are showing some variability in the strength, location, and duration of shortwaves rotating around the eastern limb of the dominating high pressure ridge. Given that uncertainty, downplayed the influence of measurable PoPs late in the extended forecast period. Left a mention of PoPs were most of the guidance was in agreement for a small chance of showers and thunderstorms on part of Friday and Friday night. && .AVIATION... Issued at 230 AM CDT Sun Jun 4 2017 Ongoing isolated to sct convection remains just west of KCGI at this writing. HRRR models this pcpn area slowly advecting northward and eastward with time thru the early am hours, so mention for KCGI/KPAH soon follows. Better convective coverage should be in the afternoon hours, so inherited probs hold, though may necessitate upgrade next issuance for the richer moisture laden air nearer KCGI/KPAH. MVFR cigs/vsbys with a heavier shower possible, otherwise generally VFR through the period. Weak shear/flow with meandering trof of low surface pressure nearby means winds will be mainly light, sometimes variable. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...None. MO...None. IN...None. KY...None. &&
Hazardous Weather Outlook National Weather Service Paducah KY 307 AM CDT Sun Jun 4 2017 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-051000- 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- 307 AM CDT Sun Jun 4 2017 This Hazardous Weather Outlook is for portions of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri. .DAY ONE...Today and Tonight A chance of thunderstorms is best today during the heat of the day, but any time chances will bring as its primary hazards locally heavy rain and lightning. .DAYS TWO THROUGH SEVEN...Monday through Saturday Lingering thunderstorm chances exist Monday, until a cold front can make passage. Locally heavy rain and lightning will remain the primary storm hazards until the front's passage brings an end to the chance of storms. A chance of thunderstorms returns to the forecast over part of the outlook area Friday and Friday Night. At this time, it appears that any storms that develop should remain below severe limits. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected.
The Evansville,IN radar (KVWX), 58 km away, was scanning. The volume nearest the first event began at 17:57 UTC.
1 flood, 1 flash flood. Local standard time, as filed.
Standing water was reported over portions of U.S. Highway 45 just north of Jeffersonville.
Some area creeks and streams rose out of their banks several miles southwest of Mt. Vernon. A trained spotter in the area measured 3.75 inches of rain in an hour and 45 minutes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2017Every state in 2017This day in weather historyWarnings in Illinois, June 2017
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: 700650, 700651.