Several clusters of strong to severe thunderstorms moved through the area along a stalled out frontal boundary.
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 ILN wrote it up.
Several clusters of strong to severe thunderstorms moved through the area along a stalled out frontal boundary.
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 Wilmington, OH wrote its last area forecast discussion before the first event at Jul 18, 10:33 PM EST, 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 1133 PM EDT WED JUL 18 2007 .SYNOPSIS... A MID LEVEL DISTURBANCE WILL CROSS THE SOUTHERN GREAT LAKES TONIGHT...ACCOMPANIED BY LARGE CLUSTERS OF THUNDERSTORMS ACROSS NORTHERN OHIO AND INDIANA. A COLD FRONT WILL THEN MOVE SOUTH ACROSS THE REGION THURSDAY AFTERNOON AND EVENING...BRINGING NUMEROUS SHOWERS AND THUNDERSTORMS TO THE OHIO VALLEY. HIGH PRESSURE WILL BUILD IN FOR FRIDAY AND THE WEEKEND. && .NEAR TERM /UNTIL 6 AM THURSDAY MORNING/... LARGE CLUSTER OF TSTMS PRODUCING COPIOUS RAINFALL EXTNDG E-W FROM NW OHIO THRU NRN IN/IL AND BACK INTO ERN IOWA. SCT TSTMS CONTINUE TO DVLP AND MOVE EAST ACRS SRN SECTIONS OF FCST AREA LATE THIS EVNG. PLENTY OF LO LVL WAA AND CONV AS A RESULT OF 35KT 850 LLJ ONGOING TO SOUTH OF MCS RESIDING OVER LWR GRT LKS. CURRENT MESOANALYSIS VIA SPC INDCG INCREASINGLY UNSTABLE ATMOSPHERE SETTING UP ACRS NW 1/2 FCST AREA ATTM. MLCAPES APPCHG 3000 J/KG ACRS CNTRL IN EAST INTO WESTERN OH. WITH MEAN WIND SUGGESTING A E/SE FORWARD PROGRESSION TO TSTM ACTIVITY OVER NEXT SVRL HOURS...EXPECT CLUSTER TO MIGRATE INTO NRN 1/2 FCST AREA. HAVE THUS RAISED TO CAT POPS NORTH OF I-70 OVERNIGHT WHERE A SVR TS WATCH HAS BEEN ISSUED. POTENTIAL EXISTS FOR WET MICROBURSTS EMBEDDED WITHIN THE EXTREMELY MOIST ENVIRONMENT. PWATS INVOF 2 INCHES...WITH WIDESPREAD TORRENTIAL RAINFALL LIKELY. 850 LLJ WILL PERSIST ALL NIGHT AND WITH MOISTURE AND INSTABILITY IN ABUNDANCE...EXPECT ADDL SCT TSTM DVLPMNT ACRS REMAINDER OF FCST AREA OVERNIGHT. ZONE AND GRID UPDATES HAVE BEEN ISSUED. RYAN && .SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/... STRONG H5 S/W AND CDFNT WILL DROP THRU THE GREAT LAKES ON THU. THE NAM IS SHOWING MORE INSTABILITY THAN THE GFS...AS THE NAM HAS OVER 3000 J/KG ACROSS THE S. EXPECT A PRETTY SOLID LINE OF TSRA TO DROP ACROSS THE REGION AHEAD OF THE FNT DURING THE AFTN AND EVENING. WENT WITH SEVERE MENTION FOR THU AFTN AND EVENING. GFS IS A LITTLE QUICKER THAN THE NAM WITH THE FRONT. PLAYED A COMPROMISE ON THE FROPA TIMING..ENDING THE TSRA WITH FROPA FROM N TO S THU NGT. WENT WITH MET/MAV BLEND ON TEMPS. SITES && .LONG TERM /FRIDAY THROUGH WEDNESDAY/... FOR FRIDAY...USED A GFS/NAM BLEND FOR IDENTIFYING FRONTAL POSITION AS IT MOVES SOUTH OF THE ILN FORECAST AREA AND THE SURFACE HIGH BUILD IN FROM THE WNW. THIS WAS TO KEEP MORE IN LINE WITH THE GFS AND SREF ENSEMBLE MEAN SOLUTIONS. FOR SATURDAY THROUGH WEDNESDAY...FOLLOWED HPCS SOLUTION. IT APPEARS THAT THE ECMWF CONTINUES TO BE MORE OF AN OUTLIER AS IT STILL HOLDS ON TO RETROGRESSION OF THE MID-LEVEL VORTEX NEAR THE EASTERN GREAT LAKES...WHEREAS IT WAS THE OPERATIONAL 00Z GFS THAT SHOWED MORE SUPPORT FROM THE 00Z NCEP ENSEMBLE MEAN IN SHOWING PROGRESSIVE TENDENCY OF THIS SYSTEM. IT WAS THE 00Z GFS MODEL OF CHOICE THAT THE MAIN SYNOPTIC FEATURES WERE DRAWN FROM. THE 12Z OPERATIONAL GFS ALSO SHOWED CONTINUITY WITH THE 00Z GFS MODEL RUN. FOR THIS PERIOD...HIGH PRESSURE DOMINATES THE WEATHER PATTERN. BY MONDAY THERE IS SOMEWHAT OF A BREAKDOWN WITH THE SURFACE RIDGE AS PERTURBATIONS ARE FORECAST TO RIDE OVER THE RIDGE. ALTHOUGH THERE ARE SOME SIGNALS INDICATING LOW POPS POSSIBLE IN ASSOCIATING WITH THESE IMPULSES...GIVEN HIGH UNCERTAINTY HAVE KEPT MENTION OF PRECIP OUT OF THE FORECAST AT THIS TIME. && .AVIATION /04Z THURSDAY THROUGH MONDAY/... CONVECTION WAS DEVELOPING IN NORTHERN OHIO...ADJACENT TO A STALLED FRONTAL BNDRY. IN ADDITION...ANOTHER CLUSTER OF STORMS HAVE DEVELOPED SOUTHEAST OF THE CINCINNATI AREA. WITH THE REMNANT INSTABILITY...A THUNDERSTORM CANNOT BE RULED OUT THROUGH 04Z...BUT EXPECTED COVERAGE AT THIS TIME WILL BE TOO SCANT TO MENTION MORE THAN CB THROUGH THE EVENING...OTHERWISE WILL AMEND. ALSO...LOOKING AT THE RUC...NAM AND GFS...AS WELL AS THE RADAR MOSIAC ACROSS NORTHERN INDIANA...A MID LEVEL DISTURBANCE MAY BRUSH THE NORTHERN SITES IN PARTICULAR...FROM 04Z-12Z. HAVE CARRIED A VCSH/CB FOR THIS EXCEPTING KLUK AND KCVG. MVFR VISIBILITIES/CIGS ARE POSSIBLE WITH ANY STORM. AFTER AN EXPECTED LULL...SCT TS ACTIVITY WILL DEVELOP AFTER 18Z AS CONSIDERABLE INSTABILITY BUILDS IN ADVANCE OF AN APPROACHING COLD FRONT. SW WINDS WILL GUST NEAR 20 KTS AT TIMES IN THE AFTERNOON. SINCE IT IS THE LAST SIX HOURS OF THE TAF PERIOD...WILL CARRY A VCSH/CB. MVFR VISIBILITIES/CIGS ARE CONDITIONALLY LIKELY WITH ANY STORM. OUTLOOK...THUNDERSTORMS ARE EXPECTED TO BECOME NUMEROUS THURSDAY NIGHT AHEAD AND ALONG OF A COLD FRONT THAT WILL MOVE THROUGH THE AREA. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 502 AM EDT WED JUL 18 2007 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-190915- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO- SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE- SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON- FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY- FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN- HIGHLAND-ADAMS-PIKE-SCIOTO- 502 AM EDT WED JUL 18 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO. .DAY ONE...TODAY AND TONIGHT SCATTERED STRONG THUNDERSTORMS ARE POSSIBLE TODAY AND TONIGHT. GUSTY WINDS AND HEAVY RAIN CAN BE EXPECTED WITH STORMS. AN ISOLATED THREAT FOR SEVERE STORMS EXISTS AS WELL...WITH THE POSSIBILITY OF DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A COLD FRONT WILL MOVE ACROSS THE REGION THURSDAY AFTERNOON AND NIGHT...BRINGING THE CHANCE FOR NUMEROUS SEVERE THUNDERSTORMS. THE MAIN THREAT FROM THESE STORMS WILL BE DAMAGING WINDS AND LARGE HAIL. LOCALLY HEAVY RAINFALL WILL ALSO BE POSSIBLE. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATER TODAY AND AGAIN ON THURSDAY. RYAN
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 836 PM EDT WED JUL 18 2007 KYZ097>099-190115- BRACKEN KY-MASON KY-ROBERTSON KY- 836 PM EDT WED JUL 18 2007 ...A STRONG THUNDERSTORM WILL AFFECT NORTHERN ROBERTSON...MASON AND SOUTHEASTERN BRACKEN COUNTIES THROUGH 915 PM EDT... AT 828 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM LOCATED NEAR HITTVILLE...MOVING EAST AT 25 MPH. THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 50 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THIS STORM INCLUDE... ABIGAIL...GERMANTOWN...SARDIS...LOWELL...MURPHYSVILLE...MAYS LICK... WASHINGTON...MAYSVILLE AND SOMO. FREQUENT CLOUD TO GROUND LIGHTNING WILL ALSO OCCUR. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOME STRONGER...THEN A WARNING MAY BE NEEDED.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1031 PM EDT WED JUL 18 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 PM TSTM WND DMG 6 S BROOKSVILLE 38.60N 84.07W
07/18/2007 BRACKEN KY TRAINED SPOTTER
TREES DOWN
&&
JCThe Cincinnati radar (KILN), 31 km away, was scanning. The volume nearest the first event began at 04:00 UTC.
4 thunderstorm wind, 1 hail. Local standard time, as filed.
Large tree limbs were downed near the intersection of State Route 350 and Middleboro Road. Nickel size hail also occurred.
Large tree limbs were downed along US Route 22 near the Warren County line.
A few trees were knocked down.
Large tree limbs were downed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2007Every state in 2007This day in weather historyWarnings in Ohio, July 2007
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: 47706, 47705, 47707, 47708, 47709.