3 flood, as filed by the National Weather Service.
Every event with a place to put it; 3 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 31, 2:25 AM EST, 3 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 325 AM EDT SAT JUL 31 2004 .SHORT TERM (TODAY THROUGH MONDAY)... MID/UPR LEVEL S/W OVER THE MS VLY TO PRGRESS ENE THRU THE GREAT LAKES TODAY. SLOW MOVING FRONTAL BOUNDARY ORIENTED FROM SFC WAV IN NE INDIANA TO NEAR IND TO NEAR MEM. MOIST FLO AHD OF THIS S/W WITH PW/S AROUND 2.0 INCHES INTO SW OH/NRN KY. FAVORABLE LOW LEVEL CONVERGENCE/UPR DIV COUPLET TO SLIDE E INTO SE OH/NE KY BY LATE MORNING/EARLY AFTN. HEAVY RAIN IS OCCURRING WITH AN AXIS OF 1.0 TO 1.5 INCHES OBSERVED THRU THE I-71 CORRIDER. WL MENTION HEAVY RAIN IN FORECAST THIS MORNING AND CONT MENTION INTO THE AFTN IN THE SOUTHEAST. FRONTAL BOUNDARY TO SLIDE INTO THE AREA TODAY BUT FORECAST SOUNDINGS SHOW MID LVL CAP DEVELOPING THIS AFTN IN THE W...SO WL MENTION MAINLY MORNING IN WESTERN LOCATIONS. FRONT LOSES ITS IDENTITY AND SFC HI PRES BEGINS TO BUILD IN TONIGHT. THIS HI WL PROVIDE DRY CONDITIONS THROUGH MONDAY. TEMP WISE...PREFER NUMBERS CLOSER TO COOLER MAV GUID TODAY AND A LTL WARMER THAN MAV TNGT. HAVE STAYED CLOSE TO GUID TEMPS SUN AND MONDAY. && THE FOLLOWING WAS ORIGINALLY ISSUED AT 240 PM EDT JUL 30 2004 .LONG TERM (MONDAY NIGHT THROUGH FRIDAY)... MODELS IN FAIRLY GOOD AGREEMENT FOR LONG TERM. UPPER LEVEL TROF SWINGS THROUGH THE REGION MONDAY AND TUESDAY BRINGING NW FLOW TO THE AREA. FORECAST CONCERN IS TIMING AND STRENGTH OF SHORT WAVES. GFS INDICATES STRONG VORT ON TUE BUT APPEARS TO HAVE CONVECTIVE FEEDBACK PROBLEM AND PREFER TO SEE SEVERAL MORE RUNS FIRST. ANOTHER VORT SWINGS THROUGH ON THU BEFORE HIGH CENTERED OVER SW BEGINS TO BUILD INTO THE OHIO VALLEY. WILL ADD SLIGHT CHANCE PRECIPITATION ON TUE...DRY FORECAST WED AND MAINTAIN SLIGHT CHANCE THU. FRI LOOKS DRY AT THIS TIME WITH CANADIAN SURFACE HIGH PRESSURE RIDGE OVER THE OHIO VALLEY. WILL SEE WARMING IN TEMPERATURES TOWARD MID WEEK AND THEN COME COOLING. HAVE MADE MINOR CHANGES TO PREVIOUS FORECAST TEMPERATURES. && .AVIATION (00Z-24Z)... SCATTERED CONVECTION CONTINUED THIS EVENING WITH TAF SITES IN AN UNSTABLE AIR MASS BEHIND A WARM FRONT. NOT MANY CHANGES TO TAFS. WITH WIDESPREAD PCPN AT THE TAF SITES AND ANTICIPATED RAINFALL...IFR CIGS AND VSBYS ARE EXPECTED AFTER THE RAIN ENDS (FOG AND STRATUS). CONDITIONS SHOULD IMPROVE BEYOND 16Z. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. IN...NONE. KY...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 500 AM EDT SAT JUL 31 2004 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-311048- ADAMS OH-AUGLAIZE OH-BOONE KY-BRACKEN KY-BROWN OH-BUTLER OH- CAMPBELL KY-CARROLL KY-CHAMPAIGN OH-CLARK OH-CLERMONT OH-CLINTON OH- DARKE OH-DEARBORN IN-DELAWARE OH-FAIRFIELD OH-FAYETTE OH-FAYETTE IN- FRANKLIN OH-FRANKLIN IN-GALLATIN KY-GRANT KY-GREENE OH-HAMILTON OH- HARDIN OH-HIGHLAND OH-HOCKING OH-KENTON KY-LEWIS KY-LICKING OH- LOGAN OH-MADISON OH-MASON KY-MERCER OH-MIAMI OH-MONTGOMERY OH- OHIO IN-OWEN KY-PENDLETON KY-PICKAWAY OH-PIKE OH-PREBLE OH-RIPLEY IN- ROBERTSON KY-ROSS OH-SCIOTO OH-SHELBY OH-SWITZERLAND IN-UNION OH- UNION IN-WARREN OH-WAYNE IN- 500 AM EDT SAT JUL 31 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN INDIANA...NORTHERN KENTUCKY AND THE SOUTHWEST QUARTER OF OHIO. .DAY ONE...TODAY THUNDERSTORMS WILL OCCUR MAINLY DURING THE MORNING HOURS. THE MAIN THREAT FROM THESE STORMS WILL BE HEAVY RAIN. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH FRIDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
The national radar mosaic for the moment the first event began.
3 flood. Local standard time, as filed.
Waves of thunderstorms moved along a stalled frontal boundary during the early morning hours. As much as four to five inches of rain fell across Brown and Clermont counties, causing several roads to become impassable due to high water.
Waves of thunderstorms moved along a stalled frontal boundary during the early morning hours. As much as four to five inches of rain fell across Brown and Clermont counties, causing several roads to become impassable due to high water.
A slow moving line of thunderstorms dumped three inches of rain across the eastern part of the county. The heavy rain caused several roads to flood in Reynoldsburg.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2004Every state in 2004This day in weather historyWarnings in Ohio, July 2004
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: 5415815, 5415816, 5415817.