An upper level disturbance aloft produced an area of showers and thunderstorms with heavy rainfall across western Pennsylvania. Flooding of roadways and areas of poor drainage were reported.
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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.
An upper level disturbance aloft produced an area of showers and thunderstorms with heavy rainfall across western Pennsylvania. Flooding of roadways and areas of poor drainage were reported.
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 1, 8:27 AM EST, 2 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 927 AM EDT MON JUL 1 2013 .SYNOPSIS... A SERIES OF WEATHER DISTURBANCES WILL KEEP PERIODIC SHOWERS AND THUNDERSTORMS IN THE AREA THROUGH THE WEEK. TEMPERATURES WILL BE AROUND SEASONAL VALUES ALL WEEK. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... BATCH OF RAIN MOVING THROUGH THE AREA NOW PRODUCING THREE QUARTERS OF AN INCH WITH LOCALLY HIGHER AMOUNTS ABOVE AN INCH. A BRIEF BREAK IN THE ACTIVITY THIS MORNING AS DRY SLOT MOVES OVERHEAD. HOWEVER WITH DESTRUCTIVE SUNSHINE LOOK FOR SHOWERS AND STORMS TO QUICKLY IGNITE IN A UNCAPPED ATMOSPHERE. CAN NOT RULE OUT AN ISOLATED SEVERE THREAT /HAIL OR WIND/. MAIN CONCERN IS EXCESSIVE RAINFALL WHEN AMOUNTS EXCEED 1.25 TO 1.5 INCHES FLOODING IS HIGHLY POSSIBLE. THESE AMOUNTS CAN BE OBSERVED IN LESS THAN AN HOUR AS THE CASE YDY GIVEN AMPLE MOISTURE IN PLACE PER WARM CLOUD DEPTHS. UPDATED FORECAST TO REFLECT A PERIOD OF SCHC/CHC POPS LATE THIS MORNING INTO MIDDAY BEFORE THEY RAMP BACK UP AGAIN. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... CNVCTN SHOULD BEGIN TO DIMINISH AFT SUNSET THIS EVE. THE SFC BNDRY IS PROGD TO SHIFT NW TNGT THRU TUE. THIS SHOULD SHIFT MAIN FOCUS FOR CNVCTN TO OUR W...HOWEVER WK SHRTWVS AND ATTAINABLE CNVCTV TEMPS SHOULD ALLOW FOR SCT CNVCTN AGAIN TUE. AN UPR LOW SLOWLY RETROGRADING WWD THRU THE MIDWEST WL CONT TO ALLOW SHRTWVS AND MOISTURE PLUMES TO MOVE NWD FM THE GULF ACRS OUR RGN. THIS SCENARIO IS EXPD LT TUE NGT INTO WED...AND AGAIN LT WED NGT. TEMPS SHOULD BE ARND SEASONAL AVGS. && .LONG TERM /THURSDAY THROUGH SUNDAY/... SHRTWVS ARE EXPD TO CONT TO STREAM NEWD ACRS THE RGN ARND AN UPR TROF ACRS THE MIDWEST. THIS WL KEEP DAILY CHCS FOR CNVCTN LINGERING INTO THE WKEND. BY LATE IN THE PD...AN UPR HIGH OVR THE WRN ATLANTIC IS EXPD TO RETROGRADE WWD ACRS VA AND THE CAROLINAS...AND THIS MAY HELP LMT CNVCTV POTENTIAL IF RIDGING IS ABLE TO BLD FAR ENOUGH NWD INTO OUR RGN. TEMPS ARE EXPD TO BE NR SEASONAL AVGS THRU THE PD. && .AVIATION /13Z MONDAY THROUGH FRIDAY/... LOW CONFIDENCE FORECAST TRYING TO TIME SHOWERS/STORMS AND POSSIBLE RESTRICTIONS WITH LOW CLOUDS. MAIN UPPER LEVEL LOW HAS RETROGRADED INTO SOUTHERN IL/IN. WITH AREA SITTING ON THE EASTERN SIDE OF LOW... DEEP MOISTURE IS BEING PULLED NORTHWARD FROM THE SOUTHEASTERN AND MID-ATLANTIC REGIONS. SHOWER ACTIVITY WILL BE WIDESPREAD...MEANING IT SHOULD EVENTUALLY ENCOUNTER EVERY PORT. WILL INDICATE RESTRICTIONS WITH THE SHOWERS THROUGH MUCH OF THE MORNING. ATMOSPHERE DESTABILIZES AGAIN AS WE HEAD TOWARD THE AFTERNOON DUE TO THE QUASI-STATIONARY SURFACE BOUNDARY SHIFTING WESTWARD TOWARD THE UPPER LOW. EXPECT MORE STORMS TO DEVELOP ALONG THE BOUNDARY...BUT CONFIDENCE IS LOW ON WHETHER ANY WILL ACTUALLY HIT A PORT. OUTLOOK.../MONDAY NIGHT THROUGH FRIDAY/... OCCASIONAL RESTRICTIONS IN DAYTIME SHOWERS AND THUNDERSTORMS AND OVERNIGHT FOG IS EXPECTED THROUGH THE PERIOD AS SEVERAL UPPER LEVEL DISTURBANCES CROSS THE REGION. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && NEAR TERM...98
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 345 AM EDT MON JUL 1 2013 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-020745- 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- 345 AM EDT MON JUL 1 2013 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...TODAY AND TONIGHT. THUNDERSTORMS MAY PRODUCE LOCALLY HEAVY RAINFALL TODAY INTO THIS EVENING...RESULTING IN LOCALIZED FLOODING. IN ADDITION...ISOLATED SEVERE THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. 07
The national radar mosaic for the moment the first event began.
3 flood. Local standard time, as filed.
Local law enforcement reported SR 322 closed between Brookville and Reynoldsville due to flooding.
Local law enforcement reported SR 28 closed between Summerville and Baxter due to flooding.
Emergency management reported SR 536 and Hamilton Markton Road closed due to flooding.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2013Every state in 2013This day in weather historyWarnings in Pennsylvania, July 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: 459856, 459858, 459859.