Slow-moving thunderstorms developed in a weak wind flow regime. These storms produced locally heavy rain.
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The episode as NWS PAH wrote it up.
Slow-moving thunderstorms developed in a weak wind flow regime. These storms produced locally heavy 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 Jul 8, 1:50 PM CST, 3 hours 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PADUCAH KY 250 PM CDT WED JUL 8 2009 .DISCUSSION... MAIN CONCERNS TODAY ARE POPS THROUGH MOST OF THE COMING WEEK. A WEAK BOUNDARY OVER THE EVANSVILLE TRI STATE HAS TOUCHED OFF A CLUSTER OF SHOWERS AND THUNDERSTORMS OVER SOUTHWEST INDIANA THIS AFTERNOON. MOISTURE IS EXTREMELY LIMITED...SO THIS ACTIVITY MAY NOT MAKE IT TO SUNSET. GENERALLY FAVOR THE 12Z NAM FOR THE NEAR TERM FORECAST. IT HAS BEEN CONSISTENTLY FAVORING LESS HEAT AND MORE PRECIPITATION FOR FRIDAY AND BEYOND...WHILE THE GFS AND OTHER MODELS HAVE SLOWLY BEEN COMING TO THAT CONCLUSION. THE NAM CONTINUES ITS TREND OF DEVELOPING CONVECTION OVER THE AREA TONIGHT...AS A MID/UPPER LEVEL WAVE SWINGS SOUTH THROUGH THE FORECAST AREA. WITH THE 12Z GFS TRENDING TOWARD THE NAM...WILL STAY THE COURSE WITH SLIGHT POPS EAST OF THE MISSISSIPPI AND WILL EVEN ADD SOME CHANCE POPS IN THE NORTHEAST. THE UPPER RIDGE BUILDS ACROSS THE REGION THURSDAY...WHICH SHOULD WARM TEMPERATURES ALOFT ENOUGH TO SUPPRESS ANY CONVECTION THAT MAY TRY TO DEVELOP ON REMNANTS OF TODAYS BOUNDARY. HOWEVER...WITH THE SURFACE RIDGE STILL HOLDING CLOSE TO THE REGION...LOW-LEVEL TEMPERATURES WILL LIKELY NOT RESPOND MUCH TOMORROW...BUT ANOTHER DEGREE OR TWO ON TOP OF TODAYS READINGS IS LIKELY. THE MID-LEVEL RIDGE BUILDS IN WITH MORE WARMING IN THE LOW-LEVELS FOR FRIDAY. THIS SHOULD ALLOW SURFACE TEMPERATURES TO WARM UP A BIT MORE...BUT IT WILL ALSO KEEP DEWPOINTS FROM MIXING OUT AS MUCH. THE 09Z SREF IS HINTING AT SOME CONVECTION MOVING INTO NORTHERN PORTIONS OF THE AREA FRIDAY AFTERNOON. HPC QPF FOLKS HAVE JUMPED ALL OVER IT...SO WILL ADD A SMALL POP TO FRIDAY AFTERNOON AND FRIDAY NIGHT...AND WITH THE INSTABILITY POSSIBLE...AND DRY AIR TO WORK WITH WOULD NOT BE SURPRISED TO SEE A FEW NEAR SEVERE STORMS. WITH THE MODELS NOW STRUGGLING TO ESTABLISH THE UPPER RIDGE OVER THE AREA INTO THE WEEKEND...FORECAST CONFIDENCE IS INCREASING FOR DECENT CHANCES OF CONVECTION SATURDAY THROUGH TUESDAY...AS A FRONT BECOMES NEARLY STATIONARY OVER THE REGION. WILL SPRINKLE MAINLY 30 POPS MOST AREAS SATURDAY THROUGH TUESDAY. THE GFS AND ECMWF FINALLY PUSH THE FRONT NORTH OF US BY THE END OF THE DAY TUESDAY...SO SHOULD SEE DRY CONDITIONS FOR TUESDAY NIGHT AND WEDNESDAY...AND A TREND TOWARD HOT CONDITIONS FOR THE MIDDLE OF NEXT WEEK. YES...WE HAVE HEARD THIS BEFORE...SO WOULD NOT BET THE BANK ON IT AT THIS TIME. TEMPERATURES IN THE NEAR TERM HAVE BEEN HELD NEAR THE LOWER NAM/MET NUMBERS THROUGH THURSDAY NIGHT...BUT THEN THE WARMER MAV LOOKS BETTER FOR FRIDAY. FOR THE REMAINDER OF THE FORECAST...HIGH BUST POTENTIAL EXISTS IN TEMPERATURE FORECAST. COULD SEE BELOW NORMAL CONDITIONS IF THE CLOUDS AND PRECIPITATION DEVELOP AS EXPECTED...OR COULD SEE ABOVE NORMAL CONDITIONS IF THE MID/UPPER RIDGE NOSES BACK INTO THE REGION INSTEAD. && .AVIATION... VFR CONDITIONS ARE EXPECTED TO PREVAIL THROUGHOUT THE VALID TIME AT ALL TAF SITES. HOWEVER ISOLATED TSRA PSBL THIS AFTN AT KEVV AND KOWB...WITH ONGOING SHOWERS AND ISOLATED THUNDER IN THE AREA. OTHERWISE OVERNIGHT SOME MAINLY VFR FOG AROUND SUNRISE FOR AN HOUR OR TWO. SHOULD SIGNIFICANT RAIN IMPACT ANY TAF SITES...MVFR MAY HAVE TO BE INTRODUCED IN LATER ISSUANCE. && .PAH WATCHES/WARNINGS/ADVISORIES... KY...NONE. MO...NONE. IL...NONE. IN...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PADUCAH KY 342 PM CDT WED JUL 8 2009 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-091000- JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON- WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-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- 342 PM CDT WED JUL 8 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT A SMALL CHANCE OF THUNDERSTORMS IS FORECAST ALONG AND EAST OF THE MISSISISIPPI RIVER TONIGHT. LOCALLY HEAVY RAINFALL AND FREQUENT LIGHTNING WILL BE THE PRIMARY CONCERNS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A CHANCE OF THUNDERSTORMS IS FORECAST ACROSS THE AREA FRIDAY THROUGH TUESDAY. LOCALLY HEAVY RAINFALL AND FREQUENT LIGHTNING WILL BE THE PRIMARY CONCERNS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
A total of 1.74 inches of rain fell in less than an hour. Ditches were full. Roads on the west side of town were covered by water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2009Every state in 2009This day in weather historyWarnings in Illinois, July 2009
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: 187130.