Scattered thunderstorms developed ahead of a cold front moving east across the upper Ohio Valley. Severe thunderstorms occurred in parts of western Pennsylvania, as well as Garrett county Maryland, and Preston county in West Virginia.
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.
Scattered thunderstorms developed ahead of a cold front moving east across the upper Ohio Valley. Severe thunderstorms occurred in parts of western Pennsylvania, as well as Garrett county Maryland, and Preston county in West Virginia.
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 Sep 2, 1:42 PM EST, 1 hour 3 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PITTSBURGH PA 242 PM EDT TUE SEP 2 2014 .SYNOPSIS... A COLD FRONT WILL CROSS THIS EVENING...WITH SHOWERS AND THUNDERSTORMS AHEAD OF IT. DRY AND LESS HUMID WEATHER RETURNS FOR WEDNESDAY AND THURSDAY. && .NEAR TERM /THROUGH WEDNESDAY/... FRONT MAKING EASTWARD PROGRESS AND APPROACHING THE WESTERN BORDER OF THE CWA. IT WILL SWING THROUGH THIS AFTERNOON AND EXIT THE EAST BY 00Z. SECONDARY DEWPOINT BOUNDARY BACK NEAR DTW AND FDY WILL THEN MOVE THROUGH OVERNIGHT. STILL SOME FAIRLY THICK CLOUD COVER IN SPOTS...ESPECIALLY ACROSS OUR NORTHERN COUNTIES...BUT MORE SUN ACROSS THE SOUTH HAS LED TO BETTER DESTABILIZATION...WITH UP TO 2000 J/KG NOTED ON SPC MESOANALYSIS. STILL DO NOT SEE A WIDESPREAD SEVERE THREAT...BUT AVAILABLE INSTABILITY PLUS MARGINAL 0-6KM SHEAR OF 35-40 KNOTS MAY SUPPORT AT LEAST A COUPLE STORMS WITH DAMAGING WIND GUSTS. CANNOT RULE OUT ISOLATED WATER PROBLEMS OVER LOW FFG AREAS AS WELL GIVEN THE RIBBON OF UP TO 1.8 INCHES OF PRECIPITABLE WATER ALONG THE FRONT...PLUS UNIDIRECTIONAL FLOW SUPPORTING THE POSSIBILITY OF TRAINING CELLS. HAVE DECREASED POPS A BIT FROM EARLIER BUT HAVE MAINTAINED LIKELY VALUES WITH FROPA. KEPT CHANCE POPS BEHIND INITIAL FRONT AS ADDITIONAL SHRA/TSRA MAY ACCOMPANY THE DEWPOINT BOUNDARY FURTHER WEST. CLOUDS WILL CLEAR FROM WEST TO EAST OVERNIGHT. THINK LINGERING LOW LEVEL MOISTURE WILL BE REALIZED MORE AS FOG THAN STRATUS OVERNIGHT WITH GRADIENT SLACKENING...AND HAVE INSERTED VALLEY FOG CWA-WIDE. WEDNESDAY WILL FEATURE PLENTY OF SUNSHINE UNDER HIGH PRESSURE. EXPECTING AFTERNOON CU DEVELOPMENT...BUT SHRA POTENTIAL SHOULD BE KEPT IN CHECK BY CAPPING ALOFT AND SUBSIDENCE. TEMPERATURES WILL CONTINUE TO RUN ABOVE NORMAL EVEN BEHIND THE FRONT...AS H500 HEIGHTS REMAIN A BIT HIGH FOR THIS TIME OF YEAR. CL && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... DRIER AND TEMPORARILY COOLER AIR INFILTRATES THE REGION WEDNESDAY NIGHT INTO THURSDAY. WITH ABUNDANT RECENT RAINFALL AND STRONG OVERNIGHT INVERSIONS WEDNESDAY NIGHT INTO THURSDAY MORNING...AT LEAST SOME FOG FORMATION SEEMS POSSIBLE. OTHERWISE...LAYER RH VALUES FALL OFF A CLIFF AND CLEARING SEEMS TO BE QUITE THE COMMON THEME AMONGST THE MODEL SOLUTIONS FROM WEDNESDAY NIGHT INTO THURSDAY NIGHT. THE MODEL CONSENSUS FAVORS THE NEXT SYSTEM DROPPING TOWARD THE AREA ON FRIDAY. IN FACT...THE SPREAD AMONGST THE OPERATIONAL GFS/EMCWF/CANADIAN IS SMALL ENOUGH TO BE NEGLIGIBLE...SO TIMING FOR SHOWERS/THUNDERSTORMS WAS PINNED TO INCREASE FRIDAY AFTERNOON AND EVENING...WITH LIKELY POPS FEATURED MOST PLACES IN THE EVENING. TEMPERATURES DO MANAGED TO INCREASED THURSDAY AND FRIDAY...WITH 850 MB CONSENSUS VALUES RUNNING UP TOWARD +18 TO +20C. GIVEN THE LOWER SUN ANGLE...THESE VALUES WILL BE TOUGH TO MIX OUT TO THE SURFACE WITHOUT A LOT OF MECHANICAL HELP BELOW THAT LEVEL. AS SUCH...HIGHS SHOULD REMAIN LARGELY IN THE 80S THROUGH THE END OF THE WEEK RATHER THAN MAKING ANY REALISTIC RUN UP TOWARD 90F. FRIES && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... MUCH COOLER AND DRIER AIR FOR THE END OF THE LONG TERM WITH BROAD SURFACE HIGH BUILDING IN FROM THE NORTHWEST. && .AVIATION /19Z TUESDAY THROUGH SUNDAY/... THE NEXT 4-6 HOURS WILL BE THE BUSIEST OF THE TAF PERIOD...WITH FROPA DURING THAT TIME. EXPECTING SHRA/TSRA TO BECOME MORE WIDESPREAD OVER THE NEXT COUPLE OF HOURS. SHOULD BE ENOUGH MVFR RESTRICTIONS FOR TEMPO TSRA MENTION. BRIEF IFR ALSO POSSIBLE BUT DID NOT WRITE UP AT THIS TIME. EXPECT CLEARING FROM WEST TO EAST DURING THE 22Z-04Z PERIOD...WITH A FAIRLY MINOR WIND SHIFT TOWARDS THE WSW. MVFR/IFR FOG LOOKS LIKE A GOOD BET OVERNIGHT GIVEN RAIN...LINGERING LOW LEVEL MOISTURE AND SLACKENING GRADIENT. VFR WILL RETURN WITH SCT CU ONCE FOG LIFTS BY 14Z. CL OUTLOOK.../TONIGHT THROUGH SATURDAY/... COLD FRONT MAY BRING RESTRICTIONS FRIDAY AND SATURDAY. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PITTSBURGH PA 420 AM EDT TUE SEP 2 2014 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-030830- 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- 420 AM EDT TUE SEP 2 2014 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. SLIGHT RISK FOR SEVERE STORMS TODAY. CURRENTLY...THE SEVERE THREAT IS MARGINAL WITH DAMAGING WINDS BEING THE GREATEST CONCERN. IF SEVERE STORMS DO DEVELOP...THEY WILL LIKELY BE ISOLATED. ANOTHER HAZARD TODAY IS THE THREAT FOR HEAVY DOWNPOURS. ANY STORM THAT DEVELOPS WILL BE CAPABLE OF PRODUCING HIGH RAINFALL AMOUNTS IN A SHORT PERIOD OF TIME. THIS COULD CAUSE LOCALIZED FLOODING IN LOW LYING AND POOR DRAINAGE AREAS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. 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.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
217 PM EDT TUE SEP 2 2014
PAZ075-076-WVZ022-023-021845-
FAYETTE PA-FAYETTE RIDGES PA-MONONGALIA WV-PRESTON WV-
217 PM EDT TUE SEP 2 2014
...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL PRESTON...
NORTHEASTERN MONONGALIA AND SOUTHEASTERN FAYETTE COUNTIES...
AT 215 PM EDT...A STRONG THUNDERSTORM WAS LOCATED NEAR LAUREL RUN...
MOVING NORTHEAST AT 40 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THIS STORM. HEAVY RAIN WILL
POND WATER ON ROADS AND QUICKLY FILL SMALL STREAMS.
LOCATIONS IMPACTED INCLUDE...
FAIRCHANCE... ELLIOTTSVILLE... HOPWOOD...
UNIONTOWN... CHALKHILL... FARMINGTON...
OHIOPYLE...
PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH
FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH.
LAT...LON 3964 7977 3972 7986 3997 7967 3986 7941
3982 7936 3980 7936SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
223 PM EDT TUE SEP 2 2014
MDZ001-WVZ023-041-021915-
GARRETT MD-PRESTON WV-TUCKER WV-
223 PM EDT TUE SEP 2 2014
...STRONG THUNDERSTORMS WILL AFFECT GARRETT...NORTHERN TUCKER AND
SOUTHERN PRESTON COUNTIES...
AT 220 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM KINGWOOD
TO FELLOWSVILLE TO 9 MILES EAST OF PHILIPPI...MOVING EAST AT 40 MPH.
WIND GUSTS TO 50 MPH ARE POSSIBLE WITH THESE STORMS. HEAVY RAIN WILL
POND WATER ON ROADS AND QUICKLY FILL SMALL STREAMS. INTENSE
LIGHTNING CAN BE EXPECTED FROM THESE STORMS. MOVE INDOORS WHEN A
THUNDERSTORM APPROACHES. DO NOT SEEK SHELTER UNDER TREES.
LOCATIONS IMPACTED INCLUDE...
TUNNELTON... NEWBURG... GLADESVILLE...
FELLOWSVILLE... KINGWOOD... ROWLESBURG...
HANNAHSVILLE... SAINT GEORGE... TERRA ALTA...
CRANESVILLE... CATHEDRAL STATE PARK...
THOMAS...
PLEASE REPORT SIGNIFICANT WEATHER BY POSTING TO THE NWS PITTSBURGH
FACEBOOK PAGE OR BY USING TWITTER @NWSPITTSBURGH.
LAT...LON 3948 7906 3941 7913 3935 7925 3930 7929
3930 7933 3919 7948 3918 7947 3922 7934
3920 7929 3919 7929 3914 7933 3911 7982
3914 7984 3923 7981 3925 7986 3930 7989
3947 7990 3973 7894 3972 7893PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
306 PM EDT TUE SEP 02 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0229 PM TSTM WND DMG ROWLESBURG 39.35N 79.68W
09/02/2014 PRESTON WV 911 CALL CENTER
NUMEROUS TREES DOWN FROM ROWLESBURG TO ROUTE 50 TOWARDS
THE PRESTON/GARRETT COUNTY BORDER
&&
EVENT NUMBER PBZ1401856
24The Pittsburgh radar (KPBZ), 109 km away, was scanning. The volume nearest the first event began at 19:46 UTC.
6 thunderstorm wind, 1 flood. Local standard time, as filed.
The public reported 2 trees uprooted and minor damage to buildings.
The 911 Call Center reported trees down on Bottom Road.
The 911 Call Center reported trees down near Shaffer Road.
The 911 Call Center reported trees down along Route 119.
The public reported trees down.
The public reported trees down.
The 911 Call Center reported Oak Grove Street had been flooded and closed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2014Every state in 2014This day in weather historyWarnings in Pennsylvania, September 2014
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: 539817, 539818, 539819, 539820, 539821, 539822, 539816.