Sub-severe storms formed and moved eastward across the Quad State throughout the day on the 17th. Multiple reports were made of a cold air funnel that formed near Perryville, Missouri.
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The episode as NWS PAH wrote it up.
Sub-severe storms formed and moved eastward across the Quad State throughout the day on the 17th. Multiple reports were made of a cold air funnel that formed near Perryville, Missouri.
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 Jul 17, 11:30 AM CST, 1 hour 8 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Paducah KY 1230 PM CDT Wed Jul 17 2024 .KEY MESSAGES... - Isolated to scattered showers and thunderstorms remain possible today with the passage of a cold front. - A cooler and much less humid air mass will take hold from Thursday through early next week. - A small chance of thunderstorms returns Sunday and increases through Tuesday. At this time, severe storms and widespread heavy rainfall are not anticipated. && .UPDATE... Issued at 612 AM CDT Wed Jul 17 2024 The Flood Watch has been canceled. With the radar mostly clear over the Flood Watch area and having received no additional flooding reports from the hardest hit areas in the Mount Vernon, IL, and Madisonville, KY, areas, the risk of additional flooding has become too low to justify having a Flood Watch. && .DISCUSSION... Issued at 252 AM CDT Wed Jul 17 2024 Showers and thunderstorms developed across central portions of the forecast area overnight in response to increasing low level convergence nearly parallel to a baroclinic zone slowly settling south through the area. Weak flow aloft and high precipitable water values yielded highly efficient rainfall totals with some rainfall estimates as high as 4 to 6 inches in the Pennyrile of western Kentucky. This has resulted in the likelihood of flash flooding, some potentially of considerable magnitude. As we progress through the morning, the diminishing trend in precipitation activity over the past hour should continue, with spotty activity possible through the morning. The potential for scattered showers and thunderstorms will continue across most of the forecast area through the afternoon as the baroclinic zone continues its southward progression. By early evening, HREF CAMs indicate that most of the activity should have pushed south into Tennessee. Will keep the Flash Flood Watch through 7 AM given the ongoing issues, but will likely let it go at that time unless we see a compelling reason to the contrary. As we head through late week and into the weekend, the upper level pattern will be characterized by a western ridge and eastern trough. At the surface, high pressure will build into the region, resulting in much cooler and drier conditions. For that matter, highs are forecast to climb from the lower 80s Thursday and Friday into the middle 80s over the weekend, while lows range from the upper 50s to middle 60s. The pattern becomes more unsettled late in the weekend and into early next week as an upper low/trough deepens over the Missouri Valley. This will result in a return of shower and thunderstorm chances Sunday through Tuesday. Even though humidity will be on the rise, temperatures look to stay below normal as highs remain in the 80s through Tuesday. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 1230 PM CDT Wed Jul 17 2024 A cold front has already passed KMVN and will pass through the remaining TAF sites by 00Z. Ahead of it, MVFR ceilings and scattered to numerous SHRA/TSRA are expected. North winds under 10kts and clearing skies are expected behind the front this evening through Thursday morning. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...None. MO...None. IN...None. KY...None. && UPDATE...DWS DISCUSSION...RJP AVIATION...DRS
Hazardous Weather Outlook National Weather Service Paducah KY 612 AM CDT Wed Jul 17 2024 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-100- 107>112-114-181115- 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- 612 AM CDT Wed Jul 17 2024 /712 AM EDT Wed Jul 17 2024/ This Hazardous Weather Outlook is for southern Illinois, southwest Indiana, western Kentucky and southeast Missouri. .DAY ONE...Today and tonight. There is a chance of showers and thunderstorms through this afternoon. Brief downpours are possible under the heaviest precipitation, but rainfall rates will be too low to cause any flooding issues. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. DWS
The Paducah radar (KPAH), 122 km away, was scanning. The volume nearest the first event began at 18:37 UTC.
1 funnel cloud. Local standard time, as filed.
A funnel cloud was observed over Perryville as a line of storms moved southeastward through Perry County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Missouri in 2024Every state in 2024This day in weather historyWarnings in Missouri, July 2024
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: 1203008.