Low pressure passed south of the area, pulling in colder air and changing rain to snow overnight. A half inch to an inch of snow was common across the area, with isolated locations getting a very heavy, wet accumulation of 3 to 4 inches.
Every event with a place to put it; 17 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 episode as NWS ILN wrote it up.
Low pressure passed south of the area, pulling in colder air and changing rain to snow overnight. A half inch to an inch of snow was common across the area, with isolated locations getting a very heavy, wet accumulation of 3 to 4 inches.
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 Mar 25, 6:46 PM EST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 746 PM EDT THU MAR 25 2010 .SYNOPSIS... A LOW PRESSURE SYSTEM WILL MOVE SOUTH OF THE REGION TONIGHT. CANADIAN HIGH PRESSURE WILL DROP SOUTH ACROSS THE GREAT LAKES FRIDAY INTO FRIDAY NIGHT. ANOTHER LOW PRESSURE SYSTEM WILL KICK OUT OF THE PLAINS SATURDAY NIGHT INTO SUNDAY. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... SFC LOW IN WRN KENTUCKY ATTM IS FCST TO MOV E ACRS CNTRL KY THIS EVENING. PRESSURE GRADIENT SHOULD INCREASE AS IT DOES AND WINDS SHOULD PICK UP DURING THE EVENING HOURS. THE SYSTEM IS HANDLED VERY SIMILARLY BY THE 12Z MODELS. SFC LOW PULLS INTO THE APPALACHIANS BY 06Z...PULLING FNT THAT IS CURRENTLY DRAPED ACRS THE REGION SOUTHWARD. PCPN WILL BEGIN TO END FROM NW TO SE AFT 03Z. CRITICAL THICKNESSES ARE STILL FORECAST TO DROP TONIGHT ON THE BACK EDGE OF THE PCPN SHIELD. PCPN LOOKS LIKE IT WILL BE ENDING A LITTLE QUICKER THAN THOUGHT YESTERDAY...SO NOT AS MUCH SNOW EXPECTED...BUT STILL EXPECT TO SEE SOME. IN THE N CLOUDS SHOULD BEGIN TO BREAK UP AFT 06Z. WENT A MOS/SREF BLEND FOR LOWS TNGT. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/... HIGH PRESSURE BUILDS IN FROM THE NW ON FRI...AND DRIES THINGS OUT FROM THE N. H8 MOISTURE BECOMES PRETTY DRY...BUT STILL MIGHT SEE SOME FEW/SCT FAIR WEATHER CU ON FRI IN THE CAA. THE HIGH SLIDES TO THE E COAST FRI NGT. THERE IS STILL A POSSIBILITY OF SOME CI FRI NGT. H5 RIDGE IS RATHER FLAT AND THERE IS A WEAK VORT PUSHING THRU THE GREAT LAKES. NEXT H5/SFC LOW IS ALREADY DEVELOPING IN THE PLAINS ON SATURDAY....BUT SKIES SHOULD BE MOSTLY SUNNY. SYSTEM KICKS E SAT NGT...ALMOST FOLLOWING THE SAME PATH AS THE CURRENT ONE. PCPN WILL WORK IN LATE SAT NGT FROM THE W. KEPT POPS IN THE CHC CATEGORY FOR SAT NGT. AS FOR TEMPERATURES...WENT TOWARDS THE COOL SIDE OF GUIDANCE ON FRI IN THE CAA. WARMED LOWS A LITTLE FRI NGT AS FLOW BECOMES SLY BY LATE FRI NGT ON THE BACK SIDE OF THE HIGH. LEANED TOWARDS THE WARMER GUIDANCE NUMBER SAT ANS SAT NGT. && .LONG TERM /SUNDAY THROUGH THURSDAY/... EXPECT PCPN TO BE ON THE INCREASE THROUGH THE MORNING HOURS ON SUNDAY AS ISENTROPIC LIFT OVERSPREADS THE AREA AHEAD OF APPROACHING SHORT WAVE. PCPN SHOULD THEN CONTINUE SUNDAY AFTERNOON INTO SUNDAY EVENING. THE MODELS ARE HINTING AT THE POSSIBILITY OF SOME WEAK INSTABILITY NOSING UP INTO AT LEAST OUR SOUTHERN FA SUNDAY AFTERNOON/EVENING. THIS COULD LEAD TO A FEW THUNDERSTORMS...BUT WITH THE BEST INSTABILITY REMAINING OFF TO OUR SOUTHWEST...HAVE OPTED TO HOLD OFF ON INCLUDING ANY THUNDER IN OUR FORECAST AT THIS TIME. THE 12Z GFS AND 12Z GEM ARE FAIRLY PROGRESSIVE WITH THIS SYSTEM WHILE THE 00Z ECMWF IS CONSIDERABLY SLOWER...TRYING TO HANG BACK A 500 MB ACROSS THE OHIO VALLEY MONDAY INTO TUESDAY. HAVE LEANED TOWARD THE FASTER SOLUTIONS AND TRIED TO TAPER OFF PCPN LATE SUNDAY NIGHT INTO MONDAY MORNING. IT LOOKS LIKE A FAIRLY STRONG RIDGE WILL THEN BUILD INTO THE REGION THROUGH THE LATER PART OF NEXT WEEK. THIS WOULD LEAD TO DRY CONDITIONS THROUGH THURSDAY ALONG WITH WARMING TEMPERATURES. THE 12Z OPERATIONAL GFS WOULD SUPPORT HIGHS WELL INTO THE 70S BY LATE NEXT WEEK. WILL TREND TOWARD THE WARMER MEX GUIDANCE BUT NOT GO QUITE AS WARM AS WHAT IS SUGGESTED BY THE RAW DATA AS THE 12Z GFS ENSEMBLE MEAN AND THE 00Z ECMWF ARE NOT AS STRONG WITH THE RIDGE. && .AVIATION /00Z FRIDAY THROUGH TUESDAY/... AN AREA OF LOW PRESSURE WILL MOVE ACROSS KENTUCKY THIS EVENING AND THROUGH THE OVERNIGHT HOURS. AS THE LOW PRESSURE SYSTEM MOVES TO THE EAST COLDER AIR WILL BEGIN TO FILTER INTO THE AREA AND WINDS WILL BEGIN TO PICK UP ACROSS THE AREA. RAIN WILL TRANSITION OVER TO SNOW ACROSS THE NORTHERN TAF SITES FOR A FEW HOURS. AT KCVG AND KLUK EXCEPT A MIX OF RAIN AND SNOW BEFORE PRECIPITATION TAPERS OFF. VISBYS AND CIGS WILL GENERALLY BE MVFR AND IFR EARLY IN THE TAF PERIOD HOWEVER EXPECT CONDITIONS TO IMPROVE TO VFR AFTER 05Z TO 07Z AT TAF SITES. SOME STRATOCUMULUS MAY BE PRESENT THROUGH THE EARLY MORNING HOURS HOWEVER EXPECT ALL LOCATIONS TO SCATTER OUT AND THEN BECOME CLEAR DURING THE DAY ON FRIDAY. WINDS WILL BEGIN TO SUBSIDE ON FRIDAY AS WELL AS SYSTEM MOVES TO THE EAST. OUTLOOK...MVFR CEILINGS AND VISIBILITIES POSSIBLE SUNDAY INTO MONDAY. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...SITES NEAR TERM...SITES SHORT TERM...SITES LONG TERM...JGL AVIATION...NOVAK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 336 AM EDT THU MAR 25 2010 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-260745- 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- 336 AM EDT THU MAR 25 2010 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. WIDESPREAD RAINFALL WILL IMPACT THE REGION TONIGHT. A FEW PERIODS OF MODERATE TO HEAVY RAINFALL WILL BE POSSIBLE. WHILE WIDESPREAD FLOODING IS NOT EXPECTED...MINOR LOCALIZED FLOODING ISSUES COULD DEVELOP IF REPEATED PERIODS OF HEAVY RAINFALL IMPACT THE SAME AREA. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The national radar mosaic for the moment the first event began.
17 winter weather. Local standard time, as filed.
Eight tenths of an inch of snow fell in Wapakoneta.
An inch of snow fell in Mechanicsburg while eight tenths of an inch fell at the county garage in Urbana.
Five inches of snow was measured in New Carlisle, while four inches was measured in Springfield.
A half inch of snow was measured at the county garage in Greenville.
Two inches of snow fell in Delaware while a half inch of snow was measured in Sunbury.
Two tenths of an inch of snow was measured in Lancaster.
A half inch of snow was measured at the county garage in Jeffersonville.
Westerville received 4.6 inches of snow. Worthington measured 4.5 inches of snow. Dublin had 2.5 inches while Groveport and Hilliard received 2 inches.
Four inches of snow fell in Utica while three inches was measured in Chatham. Law enforcement measured an inch in Newark.
Two inches of snow fell in Plain City, while an inch and a half was measured at the county garage in London.
Eight tenths of an inch of snow was measured at the county garage in Celina.
An inch of snow was measured at the county garage in Troy.
In Fort McKinley, 2.6 inches of snow was measured. Two inches fell in Farmersville, while an inch was measured in Centerville.
A half inch of snow fell in Circleville.
Three inches of snow fell in Eaton.
Anna received 1.4 inches of snowfall while an inch fell at the county garage in Sidney.
Two and a half inches of snow fell at the county garage in Marysville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2010Every state in 2010This day in weather historyWarnings in Ohio, March 2010
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: 215013, 215015, 215016, 215018, 215019, 215020, 215021, 215022, 215023, 215024, 215025, 215026, 215028, 215029, 215030, 215031, 215032.