Isolated thunderstorms developed ahead of an approaching low pressure system.
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.
Isolated thunderstorms developed ahead of an approaching low pressure system.
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 May 30, 3:50 PM EST, 32 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 450 PM EDT SAT MAY 30 2015 .SYNOPSIS... AN AREA OF LOW PRESSURE WILL APPROACH THE REGION TONIGHT AND MOVE THROUGH THE AREA ON SUNDAY. HIGH PRESSURE WILL BEGIN TO MOVE INTO INTO THE AREA FOR THE BEGINNING OF THE WORK WEEK. && .NEAR TERM /UNTIL 6 AM SUNDAY MORNING/... SHOWERS AND THUNDERSTORMS HAVE DEVELOPED IN A WARM AND UNSTABLE AIRMASS THIS AFTERNOON. AN AREA OF LOW PRESSURE WILL APPROACH THE REGION TONIGHT. EXPECT SHOWERS AND SOME THUNDERSTORM ACTIVITY TO PERSIST THROUGH THE NIGHT ESPECIALLY ACROSS WESTERN AND NORTHERN PORTIONS OF THE FA. THIS IS ALSO THE AREA THAT WILL HAVE THE POTENTIAL OF SEEING SOME ISOLATED STRONG TO SEVERE THUNDERSTORMS. THE PRIMARY THREAT OF ANY STRONG TO SEVERE STORMS WOULD BE WIND HOWEVER ISOLATED HAIL CANNOT BE RULED OUT. HIGHLIGHTED THIS THREAT IN THE HWO. TEMPERATURES WILL BE THE COOLEST ACROSS NW PORTIONS OF THE FA WHERE WINDS WILL BE MORE OUT OF THE ENE OVERNIGHT. THIS WILL ALSO BE THE AREA WHERE THERE IS THE POTENTIAL FOR THE HEAVIEST RAIN OVERNIGHT. ADDED IN HEAVY RAIN MENTION INTO THE HWO AND ALSO PUT HEAVY RAIN MENTION INTO THE FORECAST. && .SHORT TERM /6 AM SUNDAY MORNING THROUGH SUNDAY NIGHT/... THE AREA OF LOW PRESSURE IS EXPECTED TO MOVE ACROSS THE FA ON SUNDAY TRAVELING FROM AROUND JUST NORTH OF DAYTON TO JUST NORTH OF COLUMBUS. THE BEST CHANCE FOR RAIN WILL BE ALONG AND JUST OF THIS AREA. AS THE LOW MOVES ACROSS THE REGION EXPECT A WIDE RANGE IN TEMPERATURES WITH HIGH TEMPERATURES ACROSS NW PORTIONS OF THE FA ONLY EXPECTED TO BE IN THE 60S WHILE SE PORTIONS OF THE FA ARE EXPECTED TO RISE INTO THE 80S. COOLER AIR WILL WORK INTO THE FA DURING THE AFTERNOON AND THEN EXPECT TEMPERATURES TO BEGIN TO DROP ACROSS THE REGION. COOLER AIR WILL CONTINUE TO MOVE IN SUNDAY NIGHT WITH LOW TEMPERATURES RANGING FROM THE UPPER 40S ACROSS NW PORTIONS OF THE FA TO UPPER 50S ACROSS SE PORTIONS OF THE FA. && .LONG TERM /MONDAY THROUGH SATURDAY/... PERIOD WILL START WITH SURFACE HIGH OVER THE UPPER GREAT LAKES AND A FRONT STALLED JUST SOUTH OF THE REGION. LOW LEVEL MOISTURE WILL BE TRAPPED UNDER AN INVERSION RESULTING IN SUBSTANTIAL CLOUDS AND RELATIVELY COOL CONDITIONS. SOME SHOWERS COULD OCCUR IN THE FAR SOUTHERN COUNTIES IN CLOSER PROXIMITY TO THE BOUNDARY. THERE WILL BE LITTLE CHANGE TO THE PATTERN THROUGH THE MIDDLE OF THE WEEK WITH THE REGION IN A BIT OF A COL BETWEEN WESTERLIES TO THE NORTH AND A CUT OFF LOW IN THE DEEP SOUTH. OLD FRONTAL BOUNDARY/ INVERTED TROUGH WILL REMAIN JUST SOUTHEAST OF THE FORECAST AREA AND PERHAPS EVEN DRIFT BACK NORTH A BIT. A FAIR AMOUNT OF UNCERTAINTY WITH THIS EVOLUTION. BUT THERE IS ENOUGH OF A SIGNAL TO WARRANT CHANCE POPS...MOSTLY DIURNAL...WEDNESDAY AND THURSDAY. TEMPERATURES WILL SLOWLY WARM DURING THIS PERIOD. AS SOUTHERN LOW OPENS UP THE WESTERLIES WILL SAG SOUTHWARD LATE IN THE WEEK. THERE WILL BE ANOTHER CHANCE OF SHOWERS AND THUNDERSTORMS FRIDAY AS A SHORT WAVE MOVES THROUGH. IT APPEARS THAT HIGH PRESSURE WILL START BUILDING IN FOR SATURDAY. TEMPERATURES WILL BE SLIGHTLY ABOVE NORMAL FOR THE LATTER PART OF THE WEEK. && .AVIATION /21Z SATURDAY THROUGH THURSDAY/... NUMEROUS TO WIDESPREAD SHOWERS AND THUNDERSTORMS ON THE RADAR CURRENTLY. DUE TO COVERAGE HAVE ADDED TEMPO TSRA TO ALL TAF SITES THIS AFTERNOON. EXPECT COVERAGE TO REMAIN WIDESPREAD THROUGH THE AFTERNOON INTO EVENING. A SURFACE LOW WILL APPROACH FROM THE SOUTHWEST LATER THIS EVENING WHICH SHOULD HELP TO TRANSITION BEST COVERAGE FARTHER NORTH. HIGH RES MODELS THEN ARE INDICATING A LINE OF SHOWERS AND THUNDERSTORMS PUSHING INTO THE AREA EARLY TOMORROW MORNING ALONG A FRONT. HIGH RES MODELS THEN WEAKEN THE N-S LINE AS IT MOVES INTO THE AREA. AS THE LOW MOVES NORTHEAST OF THE AREA MODELS CONTINUE TO SHOW DEVELOPMENT OF MVFR CIGS. NAM AND GFS FORECAST SOUNDINGS SHOW IFR CIGS OFF TO THE WEST WITH MVFR TOWARDS THE EAST. FOR NOW HAVE TRENDED CIGS DOWN. OUTLOOK...SHOWERS AND THUNDERSTORMS ARE POSSIBLE SUNDAY. POTENTIAL EXISTS FOR MVFR OR IFR CIGS LATE SUNDAY THROUGH MONDAY MORNING. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...NOVAK NEAR TERM...NOVAK SHORT TERM...NOVAK LONG TERM... AVIATION...HAINES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 405 PM EDT SAT MAY 30 2015 INZ075-080-KYZ089>100-OHZ063>065-071>074-077>082-088-312015- OHIO-SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-FAYETTE OH-PICKAWAY- FAIRFIELD-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN- HIGHLAND-ADAMS-PIKE-SCIOTO- 405 PM EDT SAT MAY 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...SOUTH CENTRAL OHIO AND SOUTHWEST OHIO. .DAY ONE...TONIGHT. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. INZ050-058-059-066-073-074-OHZ042>046-051>056-060>062-070-312015- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-DARKE-SHELBY- LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON-FRANKLIN OH- LICKING-PREBLE-MONTGOMERY-GREENE-BUTLER- 405 PM EDT SAT MAY 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...CENTRAL OHIO...MIAMI VALLEY OF OHIO AND SOUTHWEST OHIO. .DAY ONE...TONIGHT. ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE THROUGH THE EVENING HOURS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO REPORT SIGNIFICANT WEATHER. OHZ026-034-035-312015- HARDIN-MERCER-AUGLAIZE- 405 PM EDT SAT MAY 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL OHIO. .DAY ONE...TONIGHT. ISOLATED STRONG TO SEVERE STORMS WILL BE POSSIBLE THROUGH THE EVENING HOURS. HEAVY RAIN WILL BE POSSIBLE AT TIMES THIS EVENING INTO TONIGHT. THIS MAY LEAD TO ISOLATED FLOODING ISSUES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ASKED TO REPORT SIGNIFICANT WEATHER.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
356 PM EDT SAT MAY 30 2015
OHZ034-302015-
MERCER OH-
356 PM EDT SAT MAY 30 2015
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN MERCER COUNTY
THROUGH 415 PM EDT...
AT 353 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
CHATTANOOGA...MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
WINDS TO 45 MPH...
PEA SIZE HAIL...
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...ROCKFORD.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 4053 8477 4055 8481 4073 8481 4073 8480
4073 8455SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 428 PM EDT SAT MAY 30 2015 OHZ034-035-042-302100- AUGLAIZE OH-DARKE OH-MERCER OH- 428 PM EDT SAT MAY 30 2015 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN MERCER...NORTHWESTERN DARKE AND EXTREME SOUTHWESTERN AUGLAIZE COUNTIES THROUGH 500 PM EDT... AT 427 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR COSMOS... MOVING NORTHEAST AT 45 MPH. STORM HAZARDS INCLUDE... WINDS TO 50 MPH... PEA SIZE HAIL... SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FORT RECOVERY... COLDWATER AND CELINA. ALSO...NORTH DAYTON...ROSE HILL...ELDORA SPEEDWAY...NEW WESTON... BURKETTSVILLE...NORTH STAR...ST. HENRY...OSGOOD...CARTHAGENA AND MARIA STEIN ARE NEAR THE PATH OF THIS STRONG THUNDERSTORM. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES STRONGER...THEN A WARNING MAY BE NEEDED. LAT...LON 4036 8444 4025 8481 4047 8481 4062 8445
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 430 PM EDT SAT MAY 30 2015 OHZ054-055-063-064-302100- FAYETTE OH-FRANKLIN OH-MADISON OH-PICKAWAY OH- 430 PM EDT SAT MAY 30 2015 ...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN PICKAWAY... SOUTHEASTERN MADISON...WESTERN FRANKLIN AND NORTHEASTERN FAYETTE COUNTIES THROUGH 500 PM EDT... AT 427 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR INTERSTATE 71 AT STATE ROUTE 38...MOVING NORTHEAST AT 40 MPH. STORM HAZARDS INCLUDE... WINDS TO 45 MPH... SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...MOUNT STERLING...WEST JEFFERSON AND GROVE CITY. ALSO...CHENOWETH...MADISON LAKE...FIVE POINTS...BIG PLAIN...DERBY... LILLY CHAPEL...DARBYVILLE...WRIGHTSVILLE...HARRISBURG AND ORIENT ARE NEAR THE PATH OF THIS STRONG THUNDERSTORM. LAT...LON 4007 8308 3969 8305 3961 8346 3983 8347
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
439 PM EDT SAT MAY 30 2015
OHZ042-043-051-302115-
DARKE OH-MIAMI OH-SHELBY OH-
439 PM EDT SAT MAY 30 2015
...A STRONG THUNDERSTORM WILL AFFECT SHELBY...NORTHWESTERN MIAMI AND
EASTERN DARKE COUNTIES THROUGH 515 PM EDT...
AT 437 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
GETTYSBURG...MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
WINDS TO 45 MPH...
PEA SIZE HAIL...
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...VERSAILLES AND SIDNEY.
ALSO...DARKE COUNTY AIRPORT...BRADFORD...HORATIO...WEBSTER...
BLOOMER...POLO...RUSSIA...WILLOWDELL...HOUSTON AND NEWPORT ARE NEAR
THE PATH OF THIS STRONG THUNDERSTORM.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 4029 8407 4002 8454 4020 8461 4038 8436
4038 8435 4040 8434 4046 8426SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
454 PM EDT SAT MAY 30 2015
OHZ055-064-302130-
FRANKLIN OH-PICKAWAY OH-
454 PM EDT SAT MAY 30 2015
...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN PICKAWAY AND
SOUTHWESTERN FRANKLIN COUNTIES THROUGH 530 PM EDT...
AT 453 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR DERBY...
MOVING NORTHEAST AT 30 MPH.
STORM HAZARDS INCLUDE...
WINDS TO 50 MPH...
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...GROVE CITY.
ALSO...HARRISBURG...ORIENT...GEORGESVILLE...DARBYDALE...URBANCREST...
LINCOLN VILLAGE AND VALLEYVIEW ARE NEAR THE PATH OF THIS STRONG
THUNDERSTORM.
RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.
LAT...LON 3983 8290 3974 8322 3978 8325 3979 8324
3983 8325 3988 8325 4001 8309SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
507 PM EDT SAT MAY 30 2015
OHZ043-051-302130-
MIAMI OH-SHELBY OH-
507 PM EDT SAT MAY 30 2015
...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN SHELBY AND
NORTHEASTERN MIAMI COUNTIES THROUGH 530 PM EDT...
AT 506 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
FARRINGTON...MOVING NORTHEAST AT 35 MPH.
STORM HAZARDS INCLUDE...
WINDS TO 50 MPH...
ONE HALF INCH DIAMETER HAIL...
THE STRONG THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
NORTHEASTERN MIAMI AND SOUTHEASTERN SHELBY COUNTIES...INCLUDING
FLETCHER...BALLOU AND PLATTSVILLE.
LAT...LON 4021 8416 4027 8402 4018 8402 4008 8418
4010 8425The Cincinnati radar (KILN), 104 km away, was scanning. The volume nearest the first event began at 21:20 UTC.
2 thunderstorm wind. Local standard time, as filed.
Several trees and large branches were downed.
A couple of large trees were downed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2015Every state in 2015This day in weather historyWarnings in Ohio, May 2015
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: 569155, 569156.