Showers and thunderstorms were widespread across Western Pennsylvania and northern West Virginia on the 23rd, ahead of a slow moving cold front. Some thunderstorms were severe, with isolated flash flooding as well.
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.
Showers and thunderstorms were widespread across Western Pennsylvania and northern West Virginia on the 23rd, ahead of a slow moving cold front. Some thunderstorms were severe, with isolated flash flooding as well.
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 23, 1:19 PM EST, 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 219 PM EDT TUE JUN 23 2015 .SYNOPSIS... HIGH PRESSURE RETURNS WEDNESDAY. UNSETTLED...BUT LESS HUMID WEATHER RETURNS FOR LATE WEEK. && .NEAR TERM /THROUGH WEDNESDAY/... STORMS HAVE DEVELOPED INTO A LINE AND WILL MOVE THROUGH THE SOUTHERN PART OF THE CWA THROUGH LATE AFTERNOON. RAPID IMPROVEMENT IS FORECAST BEHIND THIS FEATURE AS DEWPOINTS IN THE 50S MAKE A RETURN. WITH WINDS FROM THE NORTH AROUND 5KTS AND DESPITE RAINFALL DURING THE DAY...STILL THINK FOG WILL NOT BE WIDESPREAD ENOUGH TO BE MENTIONED IN GRIDDED DATABASE. HIGH PRESSURE BUILDS EAST ALLOWING FOR A DRY AND LESS HUMID WEDNESDAY. H8 TEMPS FALL BELOW 12C WHICH YIELDS MID AND UPPER 70S USING ENERGY BLOCK METHOD. TEMPS WERE A BLEND OF EXISTING GRIDS AND BIAS CORRECTED MET GUIDANCE. BUFR SOUNDINGS PORTRAY A FAIR AMOUNT OF CU TOMORROW WITH A MODEST LAYER OF 85% RH AND GREATER IN THE LOWEST 6KFT. THERE IS ENOUGH DRY AIR ABOVE TO MIX DOWN THAT SHOULD ALLOW FOR A PARTLY CLOUDY FORECAST. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... BENIGN WEATHER WEDNESDAY NIGHT AS HIGH PRESSURE SLOWLY MOVES EAST. MID AND UPPER LEVEL MOISTURE STREAMS IN FROM THE UPPER MIDWEST. AN MCS IS FORECAST TO BE MOVING THROUGH IND/OH/MI DURING THE EARLY MORNING HOURS THURSDAY. WHAT IS LEFT OF THIS SYSTEM REACHES OUR AREA BY MIDDAY. GIVEN CANOPY OF CLOUDS OVERHEAD AND TIME OF PASSAGE DO NOT FORESEE A WIDESPREAD SEVERE WEATHER THREAT. PROPAGATION VECTORS TAKE THE SYSTEM THROUGH SOUTHERN 1/3 OF CWA...SOUTHEASTERN OH AND NORTHERN WV. IF THIS SYSTEM SLOWS DOWN OR DEVELOPS FARTHER NORTH THAN EXPECTED THEN A LARGE AREA WILL BE UNDER THE GUN FOR THE THREAT OF DAMAGING WIND AND POSSIBLY HAIL. INSTABILITY PARAMETERS ARE NOT AS IMPRESSIVE AS THEY WERE TODAY...SO ATMOSPHERE WON'T BE AS VOLATILE. NONETHELESS...IF YOU HAVE OUTDOOR PLANS THURSDAY...PLEASE KEEP TUNED FOR LATER FORECASTS. BAROCLINIC ZONE MOVES THROUGH THURSDAY NIGHT SO ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS ARE POSSIBLE. PWATS ARE AROUND 1.5" WITH WARM CLOUD DEPTHS OF 9KFT...SO HIGH WATER NOT A HUGE CONCERN...BUT IF STORMS TRAIN OVER THE SAME AREA AS WERE HIT DURING THE DAY THEN FLOODING COULD BE A CONCERN. FRIDAY THE UPPER-LEVEL FLOW FLATTENS WEST TO EAST AND THE WEAK SURFACE LOW STAGNATES OVER THE OHIO RIVER VALLEY. THE RESULT IS THAT MOISTURE NEVER CLEARS THE SOUTHERN 1/2 OF THE FORECAST AREA...KEEPING RAIN CHANCES HIGHER THROUGH FRIDAY EVENING WITH ANOTHER AFTERNOON FLARE-UP OF CONVECTION OVER THE HIGH TERRAIN OF PA/WV/MD. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... AN UPPER-LEVEL WAVE PASSING THROUGH THE WESTERN GREAT LAKES FRIDAY NIGHT WILL SERVE TO AMPLIFY THE MERIDIONAL FLOW PATTERN. PRECIPITATION CHANCES WILL CONTINUE INTO THE WEEKEND AS MOISTURE ASSOCIATED WITH THE SURFACE LOW WILL LINGER...MAINLY ACROSS OUR SOUTH. BY THE MIDDLE PART OF THE WEEKEND THE EASTERN CONUS TROF IS IN FULL EFFECT WITH INCREASED CLOUD COVER RESULTING IN MODERATED TEMPERATURE READINGS. GUIDANCE DIFFERS A BIT ON THE EXACT EVOLUTION OF THE UPPER-LEVEL TROF...WITH THE WETTER GFS CUTTING OFF THE LOW DIRECTLY OVERHEAD. REGARDLESS OF THE MINUTIAE...IT APPEARS AS TROF WILL BE HERE TO STAY AS A RE-ENFORCING WAVE WILL DIVE IN FROM THE NORTHWEST BY EARLY NEXT WEEK. TAX && .AVIATION /18Z TUESDAY THROUGH SUNDAY/... LINE OF STORMS WILL IMPACT ALL TERMINALS SAVE FOR FKL AND DUJ THIS AFTERNOON PRODUCING BRIEF IFR RESTRICTIONS. THIS WILL BE THROUGH SOUTHERN TERMINAL OF MGW BY 22Z-23Z. VFR WEATHER RETURNS AFTER THE LINE OF SHOWERS AND STORMS MOVE THROUGH. THE COMBINATION OF DRY AIR AND NORTHERLY WINDS AROUND 5KTS SHOULD KEEP FOG AT BAY. DID INTRODUCE MVFR RESTRICTIONS AT ZZV AND MGW DURING THE PREDAWN HOURS. .OUTLOOK.../TUESDAY NIGHT THROUGH SATURDAY/... RESTRICTIONS ARE POSSIBLE BY THURSDAY AND FRIDAY WITH THE PASSAGE OF UPPER LEVEL DISTURBANCES. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 1251 PM EDT TUE JUN 23 2015 OHZ039>041-048>050-057>059-068-069-PAZ013-014-020>023-029-073-WVZ001- 002-241700- TUSCARAWAS-CARROLL-COLUMBIANA-COSHOCTON-HARRISON-JEFFERSON OH- MUSKINGUM-GUERNSEY-BELMONT-NOBLE-MONROE-LAWRENCE-BUTLER-BEAVER- ALLEGHENY-ARMSTRONG-INDIANA-WASHINGTON-WESTMORELAND-HANCOCK-BROOKE- 1251 PM EDT TUE JUN 23 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL OHIO...SOUTHWEST PENNSYLVANIA...WEST CENTRAL PENNSYLVANIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THIS IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON. THE MAIN THREATS WILL BE DAMAGING WIND GUSTS AND ISOLATED LARGE HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MDZ001-PAZ031-074>076-WVZ003-004-012-021>023-041-241700- GARRETT-GREENE-WESTMORELAND RIDGES-FAYETTE-FAYETTE RIDGES-OHIO- MARSHALL-WETZEL-MARION-MONONGALIA-PRESTON-TUCKER- 1251 PM EDT TUE JUN 23 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN MARYLAND...SOUTHWEST PENNSYLVANIA...NORTHERN WEST VIRGINIA AND NORTHERN PANHANDLE OF WEST VIRGINIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THIS IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON. THE MAIN THREATS WILL BE DAMAGING WIND GUSTS AND ISOLATED LARGE HAIL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS THURSDAY WITH DAMAGING WINDS BEING THE PRIMARY THREAT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. PAZ007>009-015-016-241700- MERCER-VENANGO-FOREST-CLARION-JEFFERSON PA- 1251 PM EDT TUE JUN 23 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST PENNSYLVANIA AND WEST CENTRAL PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. 98
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
153 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0153 PM HEAVY RAIN MACDALE 39.72N 80.23W
06/23/2015 M1.50 INCH MONONGALIA WV NWS EMPLOYEE
RAIN FELL IN 45 MINUTES.
&&
EVENT NUMBER PBZ1501995PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PITTSBURGH PA
154 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0153 PM HEAVY RAIN MONACA 40.68N 80.27W
06/23/2015 M1.50 INCH BEAVER PA NWS EMPLOYEE
RAIN FELL IN 45 MINUTES.
&&
CORRECTED COUNTY/STATE...LOCATION
EVENT NUMBER PBZ1501995PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
204 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0202 PM HEAVY RAIN 5 SW WEST SUNBURY 40.95N 79.96W
06/23/2015 M1.60 INCH BUTLER PA TRAINED SPOTTER
SINCE 7AM.
&&
EVENT NUMBER PBZ1501996PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
219 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0132 PM TSTM WND DMG VANPORT 40.68N 80.33W
06/23/2015 BEAVER PA SOCIAL MEDIA
WIRES REPORTED DOWN.
&&
EVENT NUMBER PBZ1501997PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
223 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0128 PM TSTM WND DMG INDUSTRY 40.66N 80.41W
06/23/2015 BEAVER PA SOCIAL MEDIA
TREES REPORTED DOWN ON STATE ROUTE 68
&&
EVENT NUMBER PBZ1501998PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
242 PM EDT TUE JUN 23 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0140 PM TSTM WND DMG SARVER 40.73N 79.73W
06/23/2015 BUTLER PA SOCIAL MEDIA
TREES REPORTED DOWN NEAR INTERSECTION OF GRIMM AND BEAR
CREEK ROAD.
&&
EVENT NUMBER PBZ1501999The Pittsburgh radar (KPBZ), 44 km away, was scanning. The volume nearest the first event began at 19:06 UTC.
3 thunderstorm wind, 1 hail. Local standard time, as filed.
Law enforcement reported trees down.
The Department of Highways reported tree down.
Law enforcement reported trees down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in West Virginia in 2015Every state in 2015This day in weather historyWarnings in West Virginia, June 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: 587279, 587280, 587281, 587278.