An area of convection ahead of a strong cold front produced heavy rain across parts of the Ohio Valley during the morning hours. As a result, some flooding occurred across southeastern Indiana during the late morning and early afternoon hours.
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.
An area of convection ahead of a strong cold front produced heavy rain across parts of the Ohio Valley during the morning hours. As a result, some flooding occurred across southeastern Indiana during the late morning and early afternoon hours.
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 Jan 17, 10:07 AM EST, 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 1007 AM EST TUE JAN 17 2012 .SYNOPSIS... A STRONG COLD FRONT WILL MOVE ACROSS THE REGION THIS AFTERNOON. HIGH PRESSURE WILL BUILD INTO THE REGION FOR WEDNESDAY...FOLLOWED BY A CHANCE OF SNOW WITH AN UPPER LEVEL DISTURBANCE ON THURSDAY. && .NEAR TERM /THROUGH TONIGHT/... SHOWERS AND EMBEDDED THUNDERSTORMS CONTINUE TO MOVE ACROSS THE REGION. THESE WILL PUSH THROUGH THE FORECAST AREA DURING THE AFTERNOON WITH A FAIRLY SHARP CUT OFF. COLD FRONT WILL FOLLOW A FEW HOURS AFTER THE PRECIPITATION ENDS WITH TEMPERATURES FALLING LATE IN THE DAY. CANNOT RULE OUT SOME ADDITIONAL SHOWERS WRAPPING BACK INTO THE NORTHWEST ZONES LATE THIS AFTERNOON INTO THE EVENING. AND IF ANYTHING OCCURS THERE IT SHOULD CHANGE OVER TO SNOW SHOWERS ALTHOUGH THOSE WOULD BE LIGHT. WIND GUSTS WILL PICK UP WITH THE COLD AIR ADVECTION ALTHOUGH LATEST GUIDANCE AS WELL AS TRENDS UPSTREAM SUGGEST THAT GUSTINESS MAY BE A LITTLE LESS THAN EARLIER FORECAST. WINDS WILL GRADUALLY DIMINISH OVERNIGHT. COULD BE A FEW BREAKS IN THE CLOUDS ESPECIALLY IN SOUTHWEST COUNTIES. BUT FOR THE MOST PART EXPECT CLOUDS TO PREVAIL THROUGH THE PERIOD. && .SHORT TERM /WEDNESDAY THROUGH FRIDAY/... A BRIEF HIGH PRESSURE RESPITE ON WEDNESDAY WILL GIVE WAY TO ANOTHER FRONTAL BOUNDARY PUSHING ACROSS THE GREAT LAKES ON THURSDAY. COOL AMBIENT CONDITIONS WILL GIVE WAY TO COLDER AIR BEHIND THE FRONT...WITH THE VAST MAJORITY OF THE PRECIPITATION WITH THIS SYSTEM EXPECTED TO FALL AS SNOW. MADE FEW CHANGES TO THE FORECAST WITH THIS SYSTEM...ASIDE FROM SOME NON-DIURNAL TWEAKS TO THE TEMPERATURE CURVES. THERE IS NOT A LOT OF MOISTURE FOR THIS SYSTEM TO WORK WITH...SO SIGNIFICANT ACCUMULATIONS ARE NOT EXPECTED. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... A STRONGER SHORT WAVE WILL MOVE OUT OF THE CENTRAL PLAINS ON FRIDAY AND PUSH ACROSS OUR AREA FRIDAY NIGHT. THIS SYSTEM WILL BE ABLE TO TAP INTO SOME BETTER MOISTURE FROM THE SOUTH. THE 12Z GFS REMAINS A LITTLE FASTER WITH THIS SYSTEM COMPARED TO THE 12Z ECMWF...AND WILL TREND THE FORECAST SOMEWHAT THAT WAY GIVEN FAIRLY PROGRESSIVE WESTERLY FLOW. EITHER WAY THOUGH...IT LOOKS LIKE BEST CHANCE FOR PCPN WILL BE FRIDAY NIGHT. WITH ITS SOMEWHAT SLOWER SOLUTION...THE ECMWF IS BRINGING SOME WARMER TEMPERATURES AHEAD OF THE SYSTEM WHICH WOULD LEAD TO MORE RAIN WITH THIS SYSTEM. MEANWHILE...THE GFS IS INDICATING MORE SNOW...ESPECIALLY ACROSS THE NORTH. GIVEN THE UNCERTAINTY WILL GENERALLY KEEP PCPN AS A RAIN/SNOW MIX. MID AND UPPER LEVEL RIDGING WILL BUILD ACROSS THE EASTERN UNITED STATES THROUGH THE WEEKEND...LEADING TO DRYING CONDITIONS AND SEASONABLY WARM TEMPERATURES. SHORT WAVE ENERGY MOVING OUT OF THE PLAINS WILL PUSH INTO THE RIDGE BY MONDAY WHICH COULD ALLOW FOR A CHANCE OF SHOWERS TOWARD THE END OF THE LONG TERM PERIOD. && .AVIATION /15Z TUESDAY THROUGH SATURDAY/... SHOWERS AND EMBEDDED THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS THE TERMINALS OVER THE NEXT SEVERAL HOURS. MAIN THUNDER IMPACTS WILL BE IN THE CINCINNATI AREA THROUGH 17Z. BUT CANNOT RULE OUT AN ISOLATED STORM ELSEWHERE. CONVECTIVE LINE WILL RESULT IN A BRIEF REDUCTION TO IFR CONDITIONS. IN ADDITION THERE WILL BE A TEMPORARY WIND SHIFT WITH GUSTS UP TO 35 KT. LATEST TRENDS SUGGEST THAT PRECIPITATION WILL MOVE EAST OF THE TAF SITES A BIT FASTER THAN EARLIER EXPECTED. THERE WILL BE A FEW HOURS BETWEEN THE SHOWERS ENDING AND THE PASSAGE OF A COLD FRONT. DURING THIS TIME WINDS WILL START TO VEER TO THE SOUTHWEST WITH SOME MINOR GUSTS. THERE WILL BE PATCHES OF MVFR CEILINGS. THE FRONT WILL MOVE THROUGH LATER IN THE DAY WITH SOLID MVFR CEILINGS PROBABLY DROPPING BELOW 2000 FT AND GUSTS UP TO 30 KT. FOR THE OVERNIGHT HOURS TONIGHT...LOW PRESSURE WILL MOVE TO THE UPPER REACHES OF THE SAINT LAWRENCE VALLEY BY 12Z WEDNESDAY. THIS WILL ALLOW SFC HIGH PRESSURE TO BUILD INTO THE OHIO VALLEY. WRAP AROUND MOISTURE IN THE CAA WILL CAUSE STRATOCUMULUS CLOUDS TO LINGER...BUT THEY ARE EXPECTED TO BE IN THE VFR CATEGORY AT THIS TIME. WINDS WILL BECOME MORE NW AND DIMINISH BY MORNING AS THE PRESSURE GRADIENT BEGINS TO RELAX. OUTLOOK...MVFR CEILINGS AND VISIBILITIES POSSIBLE THURSDAY AND FRIDAY. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS... NEAR TERM... SHORT TERM...HATZOS LONG TERM...JGL AVIATION...
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 440 AM EST TUE JAN 17 2012 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-180945- 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- 440 AM EST TUE JAN 17 2012 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. SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH THE MORNING AND EARLY AFTERNOON...BEFORE A COLD FRONT PUSHES IN FROM THE WEST. WHILE SEVERE WEATHER IS NOT EXPECTED...SOME STRONG WIND GUSTS AND SMALL HAIL WILL BE POSSIBLE. GUSTY WINDS OF 30 TO 35 MPH WILL BE POSSIBLE BOTH IN AND OUTSIDE OF THUNDERSTORMS. IMMEDIATELY BEHIND THE COLD FRONT...WESTERLY WIND GUSTS OF 40 TO 45 MPH WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. WHILE DETAILS ARE UNCERTAIN AT THIS POINT...A STORM SYSTEM MOVING THROUGH THE REGION ON FRIDAY NIGHT WILL BRING THE POSSIBILITY OF A MIX OF SNOW...SLEET...AND FREEZING RAIN. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HATZOS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 426 AM EST TUE JAN 17 2012 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-172300- 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- INCLUDING THE CITIES OF...RICHMOND...CONNERSVILLE...LIBERTY... BROOKVILLE...VERSAILLES...LAWRENCEBURG...RISING SUN...VEVAY... CARROLLTON...WARSAW...BURLINGTON...INDEPENDENCE...ALEXANDRIA... OWENTON...WILLIAMSTOWN...FALMOUTH...BROOKSVILLE...MOUNT OLIVET... MAYSVILLE...VANCEBURG...KENTON...CELINA...WAPAKONETA... GREENVILLE...SIDNEY...BELLEFONTAINE...MARYSVILLE...DELAWARE... PIQUA...URBANA...SPRINGFIELD...LONDON...COLUMBUS...NEWARK... EATON...DAYTON...XENIA...WASHINGTON COURT HOUSE...CIRCLEVILLE... LANCASTER...HAMILTON...LEBANON...WILMINGTON...CHILLICOTHE... LOGAN...CINCINNATI...MILFORD...GEORGETOWN...HILLSBORO... WEST UNION...PIKETON...PORTSMOUTH 426 AM EST TUE JAN 17 2012 ...GUSTY WINDS EXPECTED TODAY... SOUTHERLY WINDS WILL INCREASE IN INTENSITY THROUGH THE MORNING HOURS AND INTO THE EARLY AFTERNOON. OCCASIONAL WIND GUSTS OF 30-35 MPH ARE EXPECTED...WITH SLIGHTLY HIGHER GUSTS POSSIBLE IN THUNDERSTORMS. A STRONG COLD FRONT WILL MOVE EASTWARD THROUGH THE AREA THIS AFTERNOON. BEHIND THE FRONT...WINDS WILL SHIFT TO THE WEST AND BECOME STRONG. IN THE HOUR OR TWO AFTER THE FRONT MOVES THROUGH...WIND GUSTS OF 40-45 MPH CAN BE EXPECTED. STAY TUNED TO NOAA WEATHER RADIO...LOCAL MEDIA...OR OUR WEBSITE AT WEATHER.GOV/ILN FOR FUTURE UPDATES. HATZOS
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
737 AM EST TUE JAN 17 2012
INZ073-074-171330-
DEARBORN IN-RIPLEY IN-
737 AM EST TUE JAN 17 2012
...A LINE OF STRONG THUNDERSTORM WILL AFFECT NORTHERN RIPLEY AND
DEARBORN COUNTIES THROUGH 830 AM EST...
AT 736 AM EST...RADAR INDICATED A STRONG THUNDERSTORM NEAR
NAPOLEON...MOVING EAST AT 30 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...OSGOOD...VERSAILLES...
MILAN...MOORES HILL...LAWRENCEBURG...HIDDEN
VALLEY...GREENDALE...BRIGHT AND AURORA.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 3920 8545 3929 8526 3931 8495 3930 8483
3910 8483 3905 8490 3905 8545SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
806 AM EST TUE JAN 17 2012
KYZ091>093-OHZ077-171330-
KENTON KY-BOONE KY-CAMPBELL KY-HAMILTON OH-
806 AM EST TUE JAN 17 2012
...A STRONG THUNDERSTORM WILL AFFECT HAMILTON...EXTREME NORTHERN
CAMPBELL...NORTHERN BOONE AND EXTREME NORTHERN KENTON COUNTIES
THROUGH 830 AM EST...
AT 806 AM EST...RADAR INDICATED A STRONG THUNDERSTORM NEAR
GRANDVIEW...MOVING EAST AT 45 MPH.
WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...CLEVES...CHEVIOT...
VILLA HILLS...LUDLOW...NORTH COLLEGE HILL...MOUNT HEALTHY...PARK
HILLS...FOREST PARK...FINNEYTOWN...CINCINNATI...NEWPORT AND BELLEVUE.
LAT...LON 3930 8482 3928 8429 3924 8429 3922 8432
3921 8431 3921 8429 3904 8432 3908 8483PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
925 AM EST TUE JAN 17 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0922 AM HEAVY RAIN 6 N HOLTON 39.16N 85.38W
01/17/2012 M1.48 INCH RIPLEY IN TRAINED SPOTTER
730 AM - 900 AM
&&
MYRONPPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1006 AM EST TUE JAN 17 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0954 AM HAIL 6 N HOLTON 39.16N 85.38W
01/17/2012 E0.50 INCH RIPLEY IN TRAINED SPOTTER
&&
JDRSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
1009 AM EST TUE JAN 17 2012
INZ066-073-074-KYZ091>093-OHZ070-077-171545-
FRANKLIN IN-DEARBORN IN-RIPLEY IN-KENTON KY-BOONE KY-CAMPBELL KY-
BUTLER OH-HAMILTON OH-
1009 AM EST TUE JAN 17 2012
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT HAMILTON...SOUTHERN
BUTLER...NORTHERN CAMPBELL...BOONE...NORTHERN KENTON...RIPLEY...
DEARBORN AND SOUTHEASTERN FRANKLIN COUNTIES THROUGH 1045 AM EST...
AT 1006 AM EST...RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE
EXTENDING FROM LAWRENCEVILLE TO MILAN TO HOLTON...MOVING EAST AT 40
MPH.
WIND GUSTS TO 40 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...VERSAILLES...MILAN...
MOORES HILL...HARRISON...BRIGHT...ROSS...AURORA...LAWRENCEBURG...
FAIRFIELD...GREENDALE...HIDDEN VALLEY AND FOREST PARK.
LAT...LON 3907 8545 3915 8527 3934 8501 3933 8435
3929 8435 3929 8428 3925 8428 3922 8432
3920 8429 3904 8432 3901 8545The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Street and basement flooding was reported in the area due to heavy rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2012Every state in 2012This day in weather historyWarnings in Indiana, January 2012
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: 361686.