Severe storms developed during the early afternoon hours of May 27th.
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.
Severe storms developed during the early afternoon hours of May 27th.
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 27, 12:35 PM EST, 47 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 135 PM EDT THU MAY 27 2010 .SYNOPSIS... A WEAK COLD FRONT WILL CROSS THE REGION TODAY AS IT MOVES SOUTH. HIGH PRESSURE OVER THE UPPER MIDWEST WILL BUILD INTO THE GREAT LAKES REGION FRIDAY AND FRIDAY NIGHT. AS THE HIGH CONTINUES TO MOVE SOUTHEAST INTO THE MID ATLANTIC...RETURN FLOW WILL SET UP OVER THE OHIO VALLEY FOR THE END OF THE WEEKEND. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... ISOLATED SHOWERS AND THUNDERSTORMS HAVE POPPED UP ACROSS THE NORTHWEST PORTIONS OF OUR FA DURING THE PAST HOUR OR SO. WENT AHEAD AND UPDATED TO REMOVE THE TIMING TO THE PCPN ACROSS THE NORTHWEST. OTHERWISE...REMAINDER OF THE FORECAST APPEARS TO BE IN DECENT SHAPE. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS TO DEVELOP ACROSS MUCH OF THE REST OF THE AREA THROUGH THIS AFTERNOON AS SHORT WAVE ENERGY DROPS DOWN FROM THE GREAT LAKES. WIND FIELDS ARE FAIRLY LIGHT THOUGH SO ANY STORMS SHOULD REMAIN MAINLY DISORGANIZED...LIMITING THE SEVERE THREAT. BIGGEST CONCERN COULD BE HEAVY RAIN AS STORMS WILL LIKELY BE RATHER SLOW MOVING. && .SHORT TERM /6 PM THIS EVENING THROUGH SATURDAY NIGHT/... FRONT SAGS SOUTH TONIGHT AND WITH THE LOSS OF DAYTIME HEATING ONLY AN ISOLATED STORM MAY BE EXPECTED TO PUSH MUCH INTO THE EVENING HOURS...DYING OUT ENTIRELY BY DAYBREAK. STORMS MAY SPARK BACK UP ON FRIDAY IN THE SOUTH AND SOUTHEAST...AND GFS/EUROPEAN MODEL ARE TRYING TO KEEP A LINGERING SHOT OF RAIN IN KY THROUGH AS LATE AS SATURDAY. I DID NOT SEE THE CONTINUED THREAT INTO SATURDAY BUT STILL HAD A HEIGHTENED AREA OF ISOLD STORMS OUTSIDE OF CWA DURING THIS TIME. STORMS FRIDAY ARE EXPECTED TO BE THE END AS HIGH PRESSURE USHERS IN DRIER AND COOLER AIR BEHIND TODAY/TONIGHTS COLD FRONTAL PASSAGE. DID NOT CHANGE TEMPERATURES MORE THAN A DEGREE FOR ANY OF THE NEXT 3 DAYS. && .LONG TERM /SUNDAY THROUGH WEDNESDAY/... HIGH PRESSURE WL KEEP DRY CONDITIONS ACROSS THE FA THRU THE WEEKEND. TEMPERATURES WL BE IN THE 80S FOR HIGHS THRU MONDAY. A COLD FRNTL SYSTEM WL APPROACH THE REGION ON MONDAY AND MOVE THRU MONDAY NIGHT INTO EARLY TUESDAY MORNING. WENT WITH THE HIGHEST CHANCES OF THUNDERSTORMS MONDAY AFTERNOON THRU LATE MONDAY EVENING WITH DAYTIME HEATING. BELIEVE THAT WITH FRONT IN THE VICINITY OVERNIGHT MONDAY NIGHT THAT PCPN WL STILL BE AROUND HOWEVER DO NOT EXPECT AS MUCH IN THE WAY OF COVERAGE. FRONT LINGERS AROUND SOUTHERN PORTIONS OF THE FA FOR TUESDAY AND THEREFORE THERE MAY BE SOME RENEWED ACTIVITY FOR TUESDAY BEFORE DISSIPATING IN THE EVENING TUESDAY EVENING. BRIEF BREAK IN THE PCPN TUESDAY NIGHT BEFORE ANOTHER SYSTEM MOVES THROUGH ON WEDNESDAY. FRNTL PASSAGE MONDAY NIGHT INTO TUESDAY WL ALLOW FOR COOLER TEMPERATURES IN THE 70S TO AROUND 80 FOR TUESDAY AND WEDNESDAY. && .AVIATION /18Z THURSDAY THROUGH TUESDAY/... SCATTERED THUNDERSTORMS HAVE DEVELOPED THIS AFTERNOON ALONG INSTABILITY AXIS ACROSS WESTERN PORTIONS OF OUR FA. LIGHT NORTHERLY FLOW WILL ALLOW THESE STORMS TO DRIFT SLOWLY SOUTH THROUGH THE REST OF THIS AFTERNOON. INSTABILITY IS NOT QUITE AS GOOD ACROSS OUR EAST SO THINK THUNDERSTORM COVERAGE MAY BE A LITTLE LESS THERE AND WILL NOT HIT THE EASTERN TAF SITES QUITE AS HARD. HAVE KEPT CIGS VFR BUT IF ONE OF THESE STORMS HAPPENS TO MOVE ACROSS A TAF SITE...HEAVY RAIN WILL BE LIKELY WITH THE THREAT FOR BOTH VSBYS AND CIGS TO DROP AOB IFR FOR A PERIOD. THUNDERSTORM THREAT IS DIURNALLY ENHANCED SO ACTIVITY SHOULD TAPER OFF THROUGH EARLY EVENING. GIVEN LIGHT FLOW...EXPECT AREAS OF MVFR FOG ONCE AGAIN TONIGHT WITH VLIFR POSSIBLE AT KLUK. .OUTLOOK...NO SIGNIFICANT WEATHER EXPECTED. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...FRANKS NEAR TERM...JGL SHORT TERM...FRANKS LONG TERM...NOVAK AVIATION...JGL
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 122 PM EDT THU MAY 27 2010 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-280900- 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- 122 PM EDT THU MAY 27 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...THIS AFTERNOON AND TONIGHT. ISOLATED SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND EARLY EVENING. THE ATMOSPHERE HAS BECOME SUFFICIENTLY UNSTABLE FOR THUNDERSTORMS TO DEVELOP. PARAMETERS ARE NOT FAVORABLE FOR THESE STORMS TO BECOME ORGANIZED...HOWEVER ISOLATED STORMS COULD STRENGTHEN TO SEVERE LIMITS. LARGE HAIL AND DAMAGING WINDS WILL BOTH BE POSSIBLE. STORMS WILL WEAKEN IN THE EVENING WITH THE LOSS OF HEATING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... DUE TO THE EXPECTED ISOLATED NATURE OF THE STORMS...SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. HOWEVER...SPOTTERS ARE ENCOURAGED TO REPORT ANY SIGNIFICANT WEATHER.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
215 PM EDT THU MAY 27 2010
OHZ060-070-271915-
BUTLER OH-PREBLE OH-
215 PM EDT THU MAY 27 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN PREBLE AND
NORTHWESTERN BUTLER COUNTIES THROUGH 315 PM EDT...
AT 211 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR MORNING
SUN...MOVING SOUTH AT 15 MPH.
WIND GUSTS TO 30 MPH AND UP TO DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
IN ADDITION...HEAVY RAIN CAN BE EXPECTED WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...OXFORD.
ALSO...MORNING SUN...COLLEGE CORNER...HUESTON WOODS STATE PARK...
SOMERVILLE AND COLLINSVILLE ARE NEAR THE PATH OF THIS STRONG
THUNDERSTORM.
WATER WILL POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.
LAT...LON 3968 8462 3946 8456 3945 8481 3961 8483
3968 8482The Cincinnati radar (KILN), 104 km away, was scanning. The volume nearest the first event began at 18:23 UTC.
2 thunderstorm wind. Local standard time, as filed.
Trees were reported down due to damaging thunderstorm winds.
Power lines were reported down due to damaging thunderstorm winds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2010Every state in 2010This day in weather historyWarnings in Indiana, May 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: 227653, 227655.