Slow moving and back building showers and thunderstorms developed on the 6th with support from a slow moving upper low and weak steering flow. Flooding and flash flooding was reported in Harrison and Carroll counties, where there was better focus for prolonged rainfall.
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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.
Slow moving and back building showers and thunderstorms developed on the 6th with support from a slow moving upper low and weak steering flow. Flooding and flash flooding was reported in Harrison and Carroll counties, where there was better focus for prolonged rainfall.
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 Jul 6, 2:17 PM EST, 1 hour 21 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 317 PM EDT MON JUL 6 2015 .SYNOPSIS... WHILE SHOWERS WILL DIMINISH IN COVERAGE THIS EVENING...UNSETTLED WEATHER WILL CONTINUE THROUGH MUCH OF THE WEEK AS A COLD FRONT CROSSES THE REGION TUESDAY NIGHT AND THEN STALLS ACROSS THE REGION. && .NEAR TERM /THROUGH TUESDAY/... COVERAGE OF SHOWERS IS LIKELY AS WIDESPREAD AS IT WILL BE DURING THE AFTERNOON HOURS...WITH COVERAGE OF THUNDERSTORMS HAVING PICKED UP AS WELL. ALTHOUGH THUNDERSTORMS ARE NOT EXPECTED TO BECOME SEVERE...STEERING FLOW WINDS ARE VERY LIGHT...MEANING THAT ANY SHOWERS/STORMS ARE MOVING QUITE SLOWLY...GENERALLY FROM SOUTH TO NORTH. HEAVIER THUNDERSTORMS ARE PRODUCING RAINFALL RATES OF ONE TO TWO INCHES PER HOUR. WITH ONE HOUR FLASH FLOOD GUIDANCE GENERALLY RUNNING AT LEAST 1.5 INCHES PER HOUR...ANY FLOOD THREAT SHOULD PRIMARILY BE LIMITED TO URBAN AREAS. SHOWERS WILL QUICKLY DROP IN COVERAGE AFTER MIDNIGHT FROM WEST TO EAST...WITH ALL LOCATIONS EXPECTED TO BE DRY BY SUNRISE. A COLD FRONT WILL APPROACH FROM THE WEST DURING THE DAY. EFFECTIVE SHEAR APPEARS TO BE QUITE WEAK WITH ONLY MODEST INSTABILITY PRESENT...AND SPC HAS PUT NEARLY ALL LOCATIONS IN A MARGINAL RISK FOR SEVERE WEATHER. COMPARED TO RECENT DAYS...TOMORROW WILL BE ON THE WARM SIDE. THE PROJECTED HIGH IN PITTSBURGH IS 86 DEGREES...WHICH HAS NOT BEEN REACHED IN ABOUT 3 WEEKS...EVEN THOUGH THE NORMAL HIGH FOR THIS DATE IS 83 DEGREES. && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY/... THE FRONT WILL CROSS THE REGION TOMORROW NIGHT...BRINGING WIDESPREAD RAINFALL. AS HAS BEEN THE CASE RECENTLY...THE FRONT APPEARS LIKELY TO STALL OUT ACROSS THE REGION. LATEST MODELS SHOW FAIRLY GOOD AGREEMENT THAT THE FRONT WILL STALL ACROSS SOUTHERN PORTIONS OF THE FORECAST AREA WEDNESDAY INTO WEDNESDAY...BUT HAVE A BIT MORE DISAGREEMENT ON THURSDAY. 12Z NAM HAS THE BULK OF THE RAINFALL FROM PITTSBURGH NORTH INTO NEW YORK...WHILE THE 12Z ECMWF SHOWS RAINFALL PRIMARILY SOUTH OF PITTSBURGH INTO KENTUCKY. UNTIL MODELS COME INTO BETTER AGREEMENT...WILL SIMPLY KEEP CHANCE POPS FOR THURSDAY. WITH CONSIDERABLE CLOUD COVER EXPECTED THROUGH THE PERIOD...TEMPERATURES SHOULD DROP A FEW DEGREES BELOW NORMAL VALUES. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... FRONTAL BOUNDARY WILL WAVER ACROSS THE REGION THROUGH THE PERIOD AS SHORTWAVES MOVE EAST IN RELATIVELY ZONAL MID LEVEL FLOW. WITH INDIVIDUAL SHORTWAVES HARD TO TIME HAVE KEPT CHANCE POPS THROUGH THE PERIOD. TEMPERATURES CLOSE TO WPC PROGS WHICH SEEMED A GOOD COMPROMISE. && .AVIATION /19Z MONDAY THROUGH SATURDAY/... AN UPPER LOW OVER THE AREA WILL RESULT IN SCATTERED SHOWERS AND A FEW THUNDERSTORMS OVER THE COURSE OF THE DAY. LATEST MODEL SOUNDINGS SUGGEST CIGS SHOULD REMAIN AOA 3KFT...HOWEVER...MVFR CIGS/VIS WILL MORE THAN LIKELY BE OBSERVED DURING HEAVIEST PRECIPITATION. VFR OVERNIGHT...WITH A SLIGHT CHANCE OF FOG BEFORE DAYBREAK. .OUTLOOK.../TUESDAY THROUGH SATURDAY/... PERIODIC RESTRICTIONS ARE POSSIBLE THROUGH THE PERIOD WITH SEVERAL CROSSING DISTURBANCES. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 220 PM EDT MON JUL 6 2015 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-071200- 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- 220 PM EDT MON JUL 6 2015 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. SLOW MOVING SHOWERS AND THUNDERSTORMS WILL PRODUCE RAINFALL RATES OF ONE TO TWO INCHES PER HOUR. IF AN AREA OF SHOWERS REMAINS OVER A LOCATION LONG ENOUGH FOR MORE THAN AN HOUR...THIS COULD PRODUCE SOME LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Pittsburgh radar (KPBZ), 83 km away, was scanning. The volume nearest the first event began at 20:36 UTC.
1 flood, 1 flash flood. Local standard time, as filed.
Member of the public reported on social media that water was covering Ivory Road and Bedrock Road north of Dellroy.
Local law enforcement reported two feet of water was covering U.S. Highway 22 in downtown Piedmont.
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, July 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: 594649, 594650.