Scattered thunderstorms developed in the early morning of July 9th with isolated severe wind damage.
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 in the early morning of July 9th with isolated severe wind damage.
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 8, 9:34 PM EST, 1 hour 26 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE PITTSBURGH PA 1034 PM EDT MON JUL 8 2013 .SYNOPSIS... WARM AND HUMID WEATHER WITH A CHANCE OF A SHOWER OR THUNDERSTORM WILL CONTINUE THROUGH MIDWEEK. A COLD FRONT WILL APPROACH THE AREA BY LATE WEDNESDAY INTO THURSDAY WITH A BETTER CHANCE OF SHOWERS AND STORMS. COOLER AND DRIER AIR WILL FILTER INTO THE REGION BEHIND THE FRONT. && .NEAR TERM /THROUGH TUESDAY/... NO SGFNT ADJUSTMENTS NEEDED BEYOND UPDATE TO IMMEDIATE-TERM POPS TO REFLECT CURRENT TRENDS. PREV DISCUSSION FOLLOWS... AS SUGGESTED BY RECENT HI-RES MODEL RUNS...ONGOING CNVCTN OVER OH HAS SHOWN WEAKENING TREND AS IT PROGRESSES EWD. POPS WERE ADJUSTED TO REFLECT THE PCPN MOVG INTO WRN ZONES THRU EARLY EVE. A SECOND SHRTWV TROF WILL INVIGORATE CNVCTN LATE TNGT...WHICH IS XPCD TO MOVE THRU THE FCST AREA THRU TUE MRNG. THESE SHWRS AND TSTMS WILL BE FED BY AN AMPLE FETCH OF LOW-LVL MSTR CHARACTERIZED BY DEWPTS IN THE LOW 70S. WITH DEPARTURE OF CNVCTN IN THE MRNG...SOME BREAKS IN CLD CVR XPCD BY LATE MRNG OR EARLY AFTN...WHICH WILL CONTRIBUTE TO POTL FOR DESTABILIZATION VIA HEATING OF VERY MST BNDRY LYR. THIS PSBLTY IS MOST LKLY IN WRN AND NWRN CTYS...WHERE BRF SHRTWV RDGG XPCD IN WAKE OF MRNG CNVCTN. THERE IS A CONDITIONAL THREAT OF SVR WX TUE AFTN IF THE MDT INSTBY SHOWN IN THE LATEST NAM RUN IS REALIZED AND ABLE TO OVERCOME THE RELATIVELY MODEST SHEAR. SVR THREAT WOULD BE MAINLY FROM WET MICROBURSTS. OWING TO MRNG CNVCTN AND LINGERING CLD CVR...CONTD IDEA FROM PREV FCST OF SLGTLY COOLER MAXIMA. LWR 80S XPCD GENLY IN ERN ZONES... WITH MID 80S XPCD IN WRN ZONES...WHERE SOME INSOLATION PSBL. PREV DISCUSSION FOLLOWS... HIGH RESOLUTION MODELS INDICATE BASICALLY EXACTLY WHAT HAS BEEN OCCURRING LATE THIS MORNING AND VERY EARLY AFTERNOON...THAT CONVECTIVE TRENDS SHOULD BE DOWNWARD ACROSS THE AREA. THE MID- LEVEL LOW IS DEPARTING TO THE EAST...AND LIKELY WITH IT THE MID- LEVEL COLD POOL INDUCED INSTABILITY THAT WAS ALLOWING FOR BETTER SHOWER/THUNDERSTORM COVERAGE EARLIER TODAY. AS SUCH...SHOWER CHANCES HAVE BEEN ROLLED BACK ACROSS THE AREA TO NOTHING MORE THAN ISOLATED ANYWHERE. A FAIRLY PRONOUNCED AND STILL STRENGTHENING SHORT WAVE TROUGH IS MOVING THROUGH THE UPPER GREAT LAKES AT THE MOMENT...WITH WIDESPREAD SHOWERS AND EMBEDDED THUNDERSTORMS ASSOCIATED WITH IT. BOTH HIGH RESOLUTION AS WELL AS LARGE SCALE MODELS HAVE A GOOD HANDLE ON THIS SYSTEM...TRACKING IT TOWARD OUR WESTERN COUNTIES BY ROUGHLY 00Z THIS EVENING...AND ACROSS THE REST OF THE AREA THIS EVENING AND OVERNIGHT. POPS WERE ALREADY HIGH IN THE FORECAST...AND THESE HIGH POPS WERE MAINTAINED AS THE SYSTEM TRACKS ACROSS THE FORECAST AREA THROUGH THE NIGHT. AS TONIGHT'S SYSTEM DEPARTS TO THE EAST BY LATE MORNING/AFTERNOON TUESDAY...FORCING FOR ASCENT REALLY DIMINISHES. AT LEAST SOME CLEARING SHOULD BE EVIDENT BEHIND THAT SYSTEM GIVEN SUBSIDENCE AND A BIT OF LAYER DRYING. AS SUCH...BREAKS IN THE CLOUDS SHOULD ALLOW FOR TEMPERATURES TO RUN UP RATHER QUICKLY WHENEVER/WHEREVER THE SUN DOES COME OUT. WHILE THE AREA AS A WHOLE WILL LIKELY STICK IN THE 80S...A VERY MOIST BOUNDARY LAYER WITH DEWPOINTS IN THE LOWER 70S ON A WIDESPREAD BASIS WILL MAKE TUESDAY A VERY UNCOMFORTABLE DAY. FRIES && .SHORT TERM /TUESDAY NIGHT THROUGH THURSDAY NIGHT/... H5 FLOW INITIALLY STARTS ZONAL AT BEGINNING THIS FORECAST PERIOD. HOWEVER...UPPER LEVEL WAVE WILL DEEPEN TROF FROM CANADIAN PLAINS THROUGH MIDWEST AND THIS WILL SUPPORT SURFACE COLD FRONT WHICH WILL PUSH THROUGH CWA LATE WEDNESDAY. IN ADVANCE...CONVECTION TO DEVELOP OR POSSIBLY BE ONGOING IN ADVANCE OF FRONT. APPEARS PLENTY OF MOISTURE WITH SFC TD/S UPPER 60S TO AROUND 70 AND PW/S 1.5+. MODELS HAVE GOOD DEAL OF MOISTURE PROJECTED IN LOWER AND MID- TROPOSPHERE AND IF ENOUGH CLOUDINESS...COULD HINDER INSTABILITY. IN THOSE AREAS WITH LESS CLOUDS CAPE COULD REACH 1000-2000 OR SO. SHEAR SEEMS A BIT LACKING AT THIS TIME WITH BULK SHEAR ABOUT 30 KTS. ALSO...AT THIS TIME CALIBRATED SEVERE FIELD FROM SREF MODEST AT BEST WITH RATHER LOW PROBABILITIES. MOST LIKELY BECAUSE PREDICTED LACK OF SIGNIFICANT SHEAR. WILL CONTINUE TO MONITOR FOR POTENTIAL. POSSIBLY SOME LINGERING SHOWERS EARLY THURSDAY. HOWEVER...AS FRONT CONTINUES SOUTHEAST...DRIER AND COOLER AIR TO MOVE INTO REGION BY LATER THURSDAY AND INTO THURSDAY NIGHT. SMALL FLY IN THE OINTMENT AT THIS TIME IS THAT GFS CUTS OFF H5 LOW WHICH COULD RETARD STRENGTH OF CLEARING. ECMWF SLOWER WITH H5 LOW AND DEVELOPS IT MUCH LATER. SIGNIFICANT UNCERTAINTY AT THIS TIME ON H5 LOW DEVELOPMENT AND TIMING. && .LONG TERM /FRIDAY THROUGH MONDAY/... FRONT WILL SLOWLY CROSS THE REGION WED NIGHT. SHIFTING HIGHEST POPS FROM NORTH TO SOUTH. COOLER AND LESS HUMID AIR ARRIVES BY WEEKS END...HWVR THE BIG QUESTION IS WHAT HAPPENS TO H5 CYCLONE ONCE IT CROSSES THE REGION? GFS TAKES IT SW INTO THE GULF COAST STATES...WHILE ECMWF LIFTS IT NE AND DEVELOPS A STRONG MID LVL ANTICYCLONE ACRS THE GULF COAST. && .AVIATION /02Z TUESDAY THROUGH SATURDAY/... ADJUSTED TIMING OF PCPN AT KPIT FOR INTERIM TAF UPDATE. OUTFLOW BNDRY FOLLOWED BY DECAYING SHWRS WILL IMPACT TERMINAL BY 0300 UTC AND SHOULD LAST NO LONGER THAN 0400 UTC. ADDITIONAL SHWRS LKLY WILL MOVE THRU LATE TNGT. PREV DISCUSSION FOLLOWS... SHORT WAVE SUPPORTING SHOWERS AND THUNDERSTORMS CURRENTLY WESTERN LAKE ERIE THROUGH CENTRAL OH. PROGRESSION EAST ABOUT 20 KTS. MODELS TEND TO DIMINISH FIRST WAVE OF PRECIP AND THEN SUBSEQUENT SWATH COMES THROUGH A LITTLE LATER WITH BULK OF PRECIP BETWEEN 06Z TO 13Z OR SO. INSERTED SOME BR BY MORNING. ALSO...SEVERAL TERMINALS OPTED TO GO WITH PREVAILING 5-6SM -SHRA AND THEN VCTS. HRRR NOT ADVERTISING WIDESPREAD IFR ST/SC CEILINGS EITHER DURING OR IN WAKE OF PRECIPITATION SHIELD. AS A RESULT, OPTED TO GO MVFR MOST TERMINALS. WINDS OUTSIDE ANY CONVECTION GENERALLY LIGHT AND FROM THE SOUTHWEST 190-240 DEGREES AT 4 TO 7 KTS. OUTLOOK.../TUESDAY NIGHT THROUGH FRIDAY/... MOSTLY ZONAL FLOW BY TUESDAY NIGHT...HOWEVER...EMBEDDED WAVES WILL TRIGGER SOME SCT CONVECTION TUESDAY NIGHT. AT THIS TIME BETTER CHANCE FOR WIDER COVERAGE AND STRONGER STORMS WOULD BE ON WEDNESDAY AS STRONGER WAVE DIVES SE FROM CANADA. COLD FRONT TO PASS CWA BY MIDDAY THURSDAY AND COOLER AND DRIER AIR TO FILTER INTO REGION. RESTRICTIONS ON WEDNESDAY INTO THURSDAY MORNING...THEN VFR. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...NONE. OH...NONE. PA...NONE. WV...NONE. && KRAMAR/FRIES/KANE
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PITTSBURGH PA 720 PM EDT MON JUL 8 2013 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021>023-041-092330- 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- 720 PM EDT MON JUL 8 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...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. SEVERE THUNDERSTORMS WILL BE POSSIBLE WEDNESDAY AND WEDNESDAY NIGHT. THE PRIMARY THREAT FROM THESE STORMS WILL BE DAMAGING WIND GUSTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED WEDNESDAY AND WEDNESDAY NIGHT. KRAMAR
The Pittsburgh radar (KPBZ), 25 km away, was scanning. The volume nearest the first event began at 04:00 UTC.
2 thunderstorm wind. Local standard time, as filed.
The 911 Call Center reported trees down at the intersection of Swihart and Brigich Roads.
The 911 Call Center reported trees and wires down on Murdock Street.
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: 459994, 459995.