Southwest to northeast convective lines saw explosive development during the late day and early evening hours. Boundary interactions helped to push many of these storms to severe limits.
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.
Southwest to northeast convective lines saw explosive development during the late day and early evening hours. Boundary interactions helped to push many of these storms to severe limits.
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 Jun 4, 2:55 PM EST, 2 hours 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON OH 355 PM EDT FRI JUN 4 2010 .SYNOPSIS... SEVERAL MIDLEVEL DISTURBANCES WILL INTERACT WITH A FRONTAL BOUNDARY ACROSS THE LOWER GREAT LAKES...BRINGING SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS THROUGH EARLY SUNDAY MORNING. && .NEAR TERM /UNTIL 6 AM SATURDAY MORNING/... DESPITE AN UNSTABLE AND UNCAPPED AIRMASS IN PLACE...CONVECTION CONTINUES TO STRUGGLE TO GET GOING ACROSS THE CWA THIS AFTERNOON. THIS IS LIKELY DUE TO A LACK OF DEEP ASCENT...EVIDENT IN THE WAY CONVECTIVE TOWERS RISE THEN DISSIPATE SHORTLY AFTER. BEST LIFT SO FAR HAS BEEN CONCENTRATED OVER NORTHERN OHIO AHEAD OF A WEAK IMPULSE EVIDENT ON WATER VAPOR IMAGERY. TAIL END OF THIS FEATURE WILL CLIP THE BELLEFONTAINE/COLUMBUS/NEWARK CORRIDOR LATER THIS AFTERNOON...WHERE THE BEST CHANCE FOR CONVECTION WILL BE FOUND. WITH CAPE VALUES AROUND 2000 J/KG AND MAX DELTA THETA-E VALUES APPROACHING 30K...MAIN THREAT WILL BE DAMAGING DOWNBURST WINDS. THE POTENTIAL FOR STRONG DOWNWARD MOMENTUM IS PARTICULARLY EVIDENT BY THE LARGE OUTFLOW BOUNDARY OVER SOUTHERN OHIO WHICH WAS PRODUCED BY A SMALL DOWNBURST OVER SOUTHERN PENDLETON COUNTY EARLIER TODAY. ADDITIONAL SHOWERS/STORMS WILL CLIP THE SOUTHEAST CWA OVER THE NEXT FEW HOURS...ASSOCIATED WITH A WEAK 850 HPA JET MAX. SHEAR ACROSS THIS AREA IS WEAKER...THOUGH THERE WILL STILL BE A THREAT FOR A BRIEF DOWNBURST. CONVECTION IS EXPECTED TO DECREASE IN COVERAGE AND INTENSITY SHORTLY AFTER 00Z AS NOCTURNAL INVERSION BEGINS TO CUT OFF SURFACE-BASED INSTBY. ANOTHER WEAK MIDLEVEL IMPULSE WILL TRACK ACROSS THE LOWER GREAT LAKES LATER TONIGHT. IF LIFT IS DEEP ENOUGH...THERE WILL BE ADEQUATE ELEVATED INSTABILITY TO ALLOW FOR ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS DEVELOPING ACROSS THE NORTHERN CWA AND INTO THE LOWER GREAT LAKES AFTER MIDNIGHT. && .SHORT TERM /6 AM SATURDAY MORNING THROUGH SATURDAY NIGHT/... MAIN CONCERN FOR SATURDAY IS THE STRENGTH AND COVERAGE OF CONVECTION...AND THE ATTENDANT THREAT FOR HEAVY RAIN AND SEVERE THUNDERSTORMS. WITH THE POTENTIAL FOR NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS THE NORTHERN CWA SATURDAY MORNING...THERE REMAINS A GOOD DEAL OF UNCERTAINTY REGARDING THE IMPACT OF CONVECTIVE DEBRIS ON AIRMASS DESTABILIZATION LATER IN THE DAY. IF RAIN AND CLOUDS DO NOT SIGNIFICANTLY HINDER DAYTIME HEATING...THEN SFC DEWPOINTS IN THE UPPER 60S TO NEAR 70 SHOULD ALLOW FOR CAPE VALUES IN THE 2000-3000 J/KG RANGE...AND SET THE STAGE FOR STRONG TO SEVERE STORMS LATER IN THE DAY. BEST TIME FOR SEVERE CONVECTION WILL BE LATE AFTERNOON/EARLY EVENING AS A LOW- LEVEL JET INTENSIFIES FROM THE WEST...WHICH WILL ACT TO INCREASE LOW-LEVEL SHEAR AS WELL AS PROVIDE ADEQUATE FORCING FOR ORGANIZED CONVECTION. A LOT OF THE QUESTIONS REGARDING AIRMASS DESTABILIZATION AND THE TIMING/LOCATION OF CONVECTION DEPENDS ON THE EXACT TIMING OF MIDLEVEL IMPULSES OVERNIGHT AND TOMORROW MORNING. THESE FACTORS WILL NOT BE ABLE TO BE PINNED DOWN UNTIL EARLY TOMORROW...BUT THE POTENTIAL DOES EXIST FOR SEVERE WINDS...HAIL AND FLOODING ACROSS PORTIONS OF THE AREA TOMORROW AND TOMORROW NIGHT. BEST FLOODING THREAT WILL BE ACROSS THE NORTHERN CWA...WHICH MAY EXPERIENCE SEVERAL ROUNDS OF CONVECTION TONIGHT AND SATURDAY. CURRENT HWO HAS A GOOD HANDLE ON THIS THREAT. FRONT WILL SWING THROUGH FROM THE WEST LATE SATURDAY NIGHT...WHICH MAY BRING ADDITIONAL SHOWERS AND STORMS. WENT CLOSE TO A MET/SREF BLEND FOR TEMPS SAT AND SAT NIGHT. && .LONG TERM /SUNDAY THROUGH FRIDAY/... WENT WITH AN ECMWF AND GFS BLEND HOWEVER SIDED CLOSER TO THE ECMWF SOLUTION. THE BEGINNING OF THE LONG TERM WILL START OUT WET AROUND THE FA. COLD FRONT WILL MOVE THROUGH ON SUNDAY AND AS IT DOES PRECIPITATION WILL BEGIN TO TAPER OFF FROM NW TO SE. HIGH PRESSURE WILL THEN BUILD IN FOR MONDAY ALLOWING FOR DRY CONDITIONS TO PERSIST THROUGH TUESDAY MORNING. A FRONTAL BOUNDARY WILL APPROACH AND REMAIN AROUND THE AREA TUESDAY AFTERNOON THROUGH WEDNESDAY NIGHT ALLOWING FOR A CHANCE OF THUNDERSTORMS DURING THIS TIME PERIOD. DRY CONDITIONS WILL BE PRESENT DURING THE DAY ON THURS AND INTO FRIDAY. SOUTHERLY FLOW RETURNS FOR FRIDAY ALLOWING FOR THE WARMEST TEMPERATURES OF THE WEEK. WENT TOWARDS THE WARMER SIDE OF GUIDANCE FOR TEMPERATURES AS GUIDANCE HAS BEEN TOO COOL LATELY IN THE EXTENDED PERIOD. && .AVIATION /19Z FRIDAY THROUGH WEDNESDAY/... SCATTERED THUNDERSTORMS ARE DEVELOPING ACROSS THE REGION AND WILL MOVE EAST THROUGH THE REST OF THE DAYLIGHT HOURS. COVERAGE MAY NOT GET ANY BETTER THAN SCATTERED. SO CONFIDENCE IN STORMS IMPACTING ANY OF THE TERMINALS IS LOW. THUS AVOIDED TEMPO FOR NOW AND OPTED FOR VCTS FOR THE TWO TO THREE HOUR PERIOD WHEN THE GREATEST THREAT IS. APPEARS THREAT FOR THUNDER WILL MOVE EAST OF THE TAF SITES BY 00Z. EXPECT SOME MID TO HIGH CLOUDS OVERNIGHT. IN ADDITION THERE MAY BE SOME MVFR VISIBILITIES LATE AT NIGHT IN MIST/FOG. ADDITIONAL SHOWERS AND THUNDERSTORMS ARE FORECAST TO DEVELOP AND SPREAD INTO THE AREA LATE IN THE TAF PERIOD. THERE COULD BE AN EXTENDED CHANCE OF STORMS FROM KDAY TO KCMH. .OUTLOOK...THUNDERSTORMS POSSIBLE THROUGH SUNDAY AND THEN AGAIN TUESDAY AFTERNOON INTO WEDNESDAY. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...NONE. KY...NONE. IN...NONE. && SYNOPSIS...HAWBLITZEL NEAR TERM...HAWBLITZEL SHORT TERM...HAWBLITZEL LONG TERM...NOVAK AVIATION...
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 133 PM EDT FRI JUN 4 2010 INZ050-058-059-066-073-074-OHZ026-034-035-042>046-051>056-060>065- 070>072-077-051745- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-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-HAMILTON- 133 PM EDT FRI JUN 4 2010 ...SEVERE THUNDERSTORM WATCH 254 IN EFFECT UNTIL 8 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO. .DAY ONE...THIS AFTERNOON AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A SIGNIFICANT WAVE OF LOW PRESSURE WILL TRACK THROUGH OHIO SATURDAY NIGHT. THE AIRMASS WILL BE MODERATELY UNSTABLE WITH MODERATELY STRONG WESTERLY WINDS ALOFT. THIS ENVIRONMENT WILL SUPPORT FAST MOVING STORMS WHICH WILL BE CAPABLE OF PRODUCING DAMAGING WINDS ALONG WITH LARGE HAIL SATURDAY EVENING. ALONG WITH THIS SEVERE WEATHER THREAT...THE THREAT FOR HEAVY RAIN AND FLASH FLOODING WILL EXIST DUE TO THE REPEATED ROUNDS OF THUNDERSTORMS IN A VERY MOIST ENVIRONMENT. .SPOTTER INFORMATION STATEMENT... SPOTTERS SHOULD ACTIVATE AND REPORT SIGNIFICANT WEATHER CONDITIONS. INZ075-080-KYZ089>100-OHZ073-074-078>082-088-051745- OHIO-SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-ROSS-HOCKING-CLERMONT-BROWN- HIGHLAND-ADAMS-PIKE-SCIOTO- 133 PM EDT FRI JUN 4 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...SOUTH CENTRAL OHIO AND SOUTHWEST OHIO. .DAY ONE...THIS AFTERNOON AND TONIGHT. SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON IN A WARM UNSTABLE AIRMASS. WHILE THE HIGHEST THREAT FOR SEVERE STORMS IS EXPECTED TO REMAIN ACROSS CENTRAL PARTS OF INDIANA AND OHIO...A FEW SEVERE STORMS MAY MAKE IT AS FAR SOUTH AS NORTHERN KENTUCKY AND SOUTHERN OHIO...WITH BRIEF DAMAGING WINDS BEING THE PRIMARY THREAT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. A SIGNIFICANT WAVE OF LOW PRESSURE WILL TRACK THROUGH OHIO SATURDAY NIGHT. THE AIRMASS WILL BE MODERATELY UNSTABLE WITH MODERATELY STRONG WESTERLY WINDS ALOFT. THIS ENVIRONMENT WILL SUPPORT FAST MOVING STORMS WHICH WILL BE CAPABLE OF PRODUCING DAMAGING WINDS ALONG WITH LARGE HAIL SATURDAY EVENING. ALONG WITH THIS SEVERE WEATHER THREAT...THE THREAT FOR HEAVY RAIN AND FLASH FLOODING WILL EXIST DUE TO THE REPEATED ROUNDS OF THUNDERSTORMS IN A VERY MOIST ENVIRONMENT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING AND AGAIN ON SATURDAY.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
153 PM EDT FRI JUN 4 2010
KYZ096-097-041900-
PENDLETON KY-BRACKEN KY-
153 PM EDT FRI JUN 4 2010
...A STRONG THUNDERSTORM WILL AFFECT BRACKEN AND SOUTHERN PENDLETON
COUNTIES THROUGH 300 PM EDT...
AT 149 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
SOUTHEAST OF MORGAN...MOVING NORTHEAST AT 30 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FALMOUTH...BROOKSVILLE
AND AUGUSTA.
ALSO...MCKINNEYSBURG...CATAWBA...BROWNING CORNER...MILFORD...NEAVE...
LENOXBURG...PETRA AND BERLIN 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 3856 8449 3858 8449 3881 8423 3878 8410
3878 8402 3876 8392 3874 8392 3854 8420
3855 8423 3857 8422 3856 8442 3854 8442
3853 8446
HAWBLITZELSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
413 PM EDT FRI JUN 4 2010
KYZ094-042100-
OWEN KY-
413 PM EDT FRI JUN 4 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN OWEN COUNTY THROUGH
500 PM EDT...
AT 409 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
MONTEREY...MOVING NORTHEAST AT 15 MPH.
WIND GUSTS TO 50 MPH AND UP TO DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...OWENTON.
ALSO...MONTEREY...BEECHWOOD...NEW COLUMBUS...NEEDMORE AND NATLEE 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 3835 8487 3838 8491 3842 8490 3844 8493
3845 8493 3842 8497 3846 8497 3848 8499
3861 8476 3856 8468 3851 8466 3847 8459
3836 8471 3833 8481
HAWBLITZELSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
457 PM EDT FRI JUN 4 2010
KYZ096-097-OHZ078-042145-
PENDLETON KY-BRACKEN KY-CLERMONT OH-
457 PM EDT FRI JUN 4 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN CLERMONT...BRACKEN AND
EASTERN PENDLETON COUNTIES THROUGH 545 PM EDT...
AT 455 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
LENOXBURG...MOVING EAST AT 15 MPH.
WIND GUSTS TO 50 MPH AND UP TO DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...BROOKSVILLE...FELICITY
AND AUGUSTA.
ALSO...MOUNT AUBURN...NEAVE...LENOXBURG...FOSTER...BERLIN...
NEVILLE...POWERSVILLE AND WILLOW GROVE 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 3875 8440 3889 8404 3877 8405 3879 8398
3878 8395 3876 8391 3866 8397 3859 8432
HAWBLITZELSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
555 PM EDT FRI JUN 4 2010
OHZ062-042230-
GREENE OH-
555 PM EDT FRI JUN 4 2010
...A STRONG THUNDERSTORM WILL AFFECT GREENE COUNTY THROUGH 630 PM
EDT...
AT 550 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
BEAVERCREEK...MOVING EAST AT 25 MPH.
WIND GUSTS TO 45 MPH ARE POSSIBLE WITH THIS STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...FAIRBORN...XENIA...
YELLOW SPRINGS...WILBERFORCE...CEDARVILLE AND JAMESTOWN.
ALSO...GREENE COUNTY AIRPORT...TREBEIN...OLDTOWN...JOHN BRYAN STATE
PARK...CLIFTON...NEW JASPER...ROSEMOOR AND BELL CENTER 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 3984 8394 3983 8393 3982 8383 3979 8382
3979 8377 3978 8373 3978 8365 3962 8366
3967 8410 3984 8409 3985 8405
HAWBLITZELSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
600 PM EDT FRI JUN 4 2010
OHZ046-042245-
DELAWARE OH-
600 PM EDT FRI JUN 4 2010
...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN DELAWARE COUNTY THROUGH
645 PM EDT...
AT 559 PM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR SHAWNEE
HILLS...MOVING EAST AT 30 MPH.
WIND GUSTS TO 50 MPH AND UP TO DIME SIZE HAIL ARE POSSIBLE WITH THIS
STORM.
SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...POWELL AND SUNBURY.
ALSO...STRATFORD...LEWIS CENTER...ALUM CREEK STATE PARK...GALENA AND
CENTER VILLAGE 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 4026 8275 4012 8276 4012 8280 4016 8315
4027 8318 4032 8273 4027 8273
HAWBLITZELThe Cincinnati radar (KILN), 127 km away, was scanning. The volume nearest the first event began at 22:52 UTC.
7 thunderstorm wind, 4 hail. Local standard time, as filed.
Large branches were reported down due to damaging thunderstorm winds.
Minor structural damage occurred in addition to trees down around the area.
Farm equipment was overturned, power poles were down, and trees were down due to damaging thunderstorm winds. One tree fell onto a home.
The wind gust was an estimate.
Numerous power poles and trees were reported down. A few roofs were damaged and the main antenna at the 911 center was bent.
Large tree limbs were reported down due to damaging thunderstorm winds.
Trees were reported down on a house due to damaging thunderstorm winds.
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, June 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: 230123, 230122, 230124, 230125, 230126, 230127, 230128, 230129, 230130, 230132, 230150.