An outflow boundary situated over interstate 80 became the focus for thunderstorm development as several upper level disturbances rounded a flattening ridge over the plains. These storms eventually congealed into several lines, one near the western Pennsylvania/Ohio border and another further back into Ohio southern lower Michigan, that moved southeastward through the evening of the 25th and…
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 PBZ wrote it up.
An outflow boundary situated over interstate 80 became the focus for thunderstorm development as several upper level disturbances rounded a flattening ridge over the plains. These storms eventually congealed into several lines, one near the western Pennsylvania/Ohio border and another further back into Ohio southern lower Michigan, that moved southeastward through the evening of the 25th and early on the 26th. In addition to widespread reports of wind damage and hail, training thunderstorms dumped two to four inches of rain and caused areas of flooding across east central Ohio and adjacent areas in western Pennsylvania.
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 Pittsburgh, PA wrote its last area forecast discussion before the first event at Jun 25, 1:45 PM EST, 3 hours 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 245 PM EDT TUE JUN 25 2013 .SYNOPSIS... WARM AND HUMID CONDITIONS WILL CONTINUE. IN ADDITION...SEVERAL UPPER LEVEL DISTURBANCES WILL BRING THE CHANCE FOR SHOWERS AND THUNDERSTORMS UNTIL A COLD FRONT PASSES ON THURSDAY. && .NEAR TERM /THROUGH TONIGHT/... LOOKS LIKE CONVECTION WILL CONTINUE TO DEVELOP IN THE VICINITY OF THE TRAILING OUTFLOW BOUNDARY THAT IS CURRENTLY SET UP ROUGHLY ALONG THE I-80 CORRIDOR. WHILE THE MESOSCALE ANALYSIS SUGGESTS PLENTY OF INSTABILITY...WITH CAPE IN EXCESS OF 2500-3000 J/KG...SHEAR CONTINUES TO REMAIN MARGINAL AT BEST. THIS HAS LEAD TO VERY DISORGANIZED STORMS THUS FAR. HOWEVER...SEVERAL OF THE HI RES MODELS ARE CONTINUING TO SUGGEST A BIT MORE ORGANIZATION BY LATE THIS AFTERNOON. BOTH THE HRRR AND 4KM NAM SUGGEST THAT A MCS WILL DEVELOP AND PROPAGATE ALONG THIS SLOWLY SINKING BOUNDARY MENTIONED ABOVE...CROSSING THE FORECAST AREA BY 8PM. NOT COMPLETELY SOLD ON MCS DEVELOPMENT BUT...SINCE THE DETERMINISTIC MODELS CONTINUE TO SHOW A BREAK DOWN IN THE RIDGE AS A WEAK SHORTWAVE MOVES ACROSS THE GREAT LAKES THIS EVENING...BELIEVE THIS COULD BE ENOUGH TO AT LEAST HELP SOME STORMS REACH STRONG TO SEVERE LEVELS. FOR NOW...CONTINUED THE SCATTERED COVERAGE WORDING FOR THUNDERSTORMS AND WILL CONTINUE TO MONITOR UPSTREAM TRENDS. A SIMILAR SCENARIO REMAINS IN PLACE FOR WEDNESDAY. MODEL SOUNDINGS CONTINUE TO SUGGEST A BRIEF NORTHWESTERLY WIND COMPONENT AT MID LEVELS COULD POSSIBLY HELP SUPPORT STRONGER STORMS WEDNESDAY AFTERNOON...BUT COVERAGE REMAINS UNCERTAIN. A PERSISTENCE FORECAST FOR TEMPERATURES WAS MAINTAINED THROUGH THE PERIOD. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... STRONG AGREEMENT AMONGST NCEP CHAIN ON A MODEST MID LVL WAVE CROSSING THE WESTERN GREAT LAKES WED NGT INTO THUR. CONFIDENCE HAS INCREASED TO RAISE POPS FURTHER INTO THE CATEGORICAL RANGE. TIME OF DAY DOES NOT LEND ITSELF TO HAZARDOUS WEATHER...SO PRESENT THINKING IS WE EXPERIENCE A WELCOME RAIN WITH SCATTERED SUB-SEVERE STORMS. PROGRESSIVE PATTERN WITH IMPULSES CROSSING EVERY 18 TO 24 HOURS DOES NOT LEND ITSELF MUCH TIME FOR INSERTION OF DRY WEATHER. CONTINUED WITH CHANCE POPS THE BALANCE OF SHORT TERM AS INHERITED DATASET PRESENTLY ILLUSTRATES. THERMODYNAMIC PARAMETERS ARE NOT IMPRESSIVE FRIDAY FOR A SEVERE THREAT DESPITE A STRONG KINEMATIC ENVIRONMENT. SBCAPES PUSH 2.0 KJKG-1 W OF I-77 ALONG WITH BETTER BL EQUIV POT TEMP ADV...BUT MID LVL LAPSE RATES ARE MARGINAL /AROUND 5CKM-1 OR LESS/. AS H5 CYCLONE COILS UP ACRS EASTERN CANADA...ASSOCIATED HEIGHT FALLS WILL BRING COOLER AND LESS HUMID WEATHER OVER THE WEEKEND. INTERSECTION OF INSTABILITY AND LIFT WILL COINCIDE ON THE LEADING EDGE OF H7-H3 DCVA SUPPORTING RW/TRW DEVELOPMENT CLOSER TO LAKE ERIE. A COLD FRONT ENCROACHES SAT NGT BUT LIMITED MOISTURE ACCOMPANIES IT. DUE TO STAGNANT PATTERN LEANED HEAVILY ON BIAS CORRECTED MOSGUIDE GRIDS FOR TEMPS WHICH HAVE PREFORMED WELL RECENTLY. && .LONG TERM /FRIDAY NIGHT THROUGH MONDAY/... A SERIES OF SHRTWVS WL CONT TO DROP SE ACRS THE GT LKS RGN THRU MOST OF THE PD. THIS WL SPPRT SHWR/TSTM CHCS AT LEAST THRU SAT. MOISTURE MORE IN QUESTION BY SUN SO ONLY MENTIONED SLGT CHC POPS THEN. OTRW...WENT NO HIGHER THAN CHC POPS ATTM DUE TO TIMING UNCERTAINTIES IN INDIVIDUAL SHRTWVS. EXP TEMPS NR OR A SLGTLY ABV SEASONAL AVGS UNTIL HIGH PRES BLDS IN LT IN THE PD WITH SLGTLY BLO AVG READINGS. && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... VFR CONDS CURRENTLY. BECOMING MORE UNSTABLE AS THE HEATING CONTINUES. DISTURBANCE MOVING ALONG THE OUTFLOW BOUNDARY FROM THE OVERNIGHT MCS WILL BE THE FOCUS OF THE NEXT CLUSTER OF STORMS THAT WILL MOVE THROUGH THE TAF SITES EARLY THIS EVENING WITH MVFR RESTRICTIONS IN TSRA. PTCHY MVFR IN BR IS PSBL FOR MANY TAF SITES DURING THE SUNRISE HOURS ON WEDNESDAY. OUTLOOK.../WEDNESDAY THROUGH SATURDAY/... VFR IS EXPD MUCH OF THE TIME...ALTHOUGH A SERIES OF DISTURBANCES WL BRING DAILY CHCS OF SHWRS/TSTMS WITH THE HIGHEST CHC BEING THU/THU NGT. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA ISSUED BY NATIONAL WEATHER SERVICE CHARLESTON WV 446 PM EDT TUE JUN 25 2013 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-262100- GARRETT-TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON- JEFFERSON OH-MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-MERCER-VENANGO- FOREST-LAWRENCE-BUTLER-CLARION-JEFFERSON PA-BEAVER-ALLEGHENY- ARMSTRONG-INDIANA-WASHINGTON-GREENE-WESTMORELAND-WESTMORELAND RIDGES- FAYETTE-FAYETTE RIDGES-HANCOCK-BROOKE-OHIO-MARSHALL-WETZEL-MARION- MONONGALIA-PRESTON-TUCKER- 446 PM EDT TUE JUN 25 2013 ...SEVERE THUNDERSTORM WATCH 362 IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...EAST CENTRAL OHIO...NORTHWEST PENNSYLVANIA...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .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...WEDNESDAY THROUGH MONDAY. SLIGHT RISK FOR SEVERE STORMS ON WEDNESDAY. THE MAIN THREAT WILL BE LARGE HAIL AND DAMAGING WINDS. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
556 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0515 PM TSTM WND DMG STONEBORO 41.34N 80.11W
06/25/2013 MERCER PA 911 CALL CENTER
TREES DOWN
&&
EVENT NUMBER PBZ1302032
98PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
557 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM TSTM WND DMG SANDY LAKE 41.35N 80.08W
06/25/2013 MERCER PA 911 CALL CENTER
TREES DOWN
&&
EVENT NUMBER PBZ1302033
98PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
603 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0509 PM TSTM WND DMG 9 S JAMESTOWN 41.35N 80.44W
06/25/2013 MERCER PA TRAINED SPOTTER
TREES DOWN
&&
EVENT NUMBER PBZ1302034
98PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
608 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM TSTM WND DMG 3 S CADIZ 40.22N 80.99W
06/25/2013 HARRISON OH LAW ENFORCEMENT
MULTIPLE TREES DOWN
&&
EVENT NUMBER PBZ1302035
RCCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
610 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0544 PM TSTM WND DMG 4 N JEWETT 40.43N 81.00W
06/25/2013 CARROLL OH LAW ENFORCEMENT
MULTIPLE TREES DOWN
&&
EVENT NUMBER PBZ1302036
RCCPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
614 PM EDT TUE JUN 25 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0604 PM TSTM WND DMG SUMMERVILLE 41.12N 79.19W
06/25/2013 JEFFERSON PA 911 CALL CENTER
TREES DOWN
&&
EVENT NUMBER PBZ1302037
98The Pittsburgh radar (KPBZ), 39 km away, was scanning. The volume nearest the first event began at 22:16 UTC.
10 thunderstorm wind. Local standard time, as filed.
Department of Highways reported trees down.
State official reported trees down.
State official reported trees down.
The public reported multiple trees uprooted and large limbs broken.
State official reported trees down.
Local law enforcement reported trees down.
The public reported that a backyard swing set was blown over and destroyed.
Local law enforcement reported trees down.
Local law enforcement reported trees down.
Department of Highways reported trees down on Dallas Pike Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2013Every state in 2013This day in weather historyWarnings in West Virginia, June 2013
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: 465904, 465905, 465906, 465907, 465908, 465909, 465910, 465911, 465912, 465913.