A line of showers and thunderstorms developed from near Williamsport, Pennsylvania south into Maryland in association with a surface trough and upper level disturbance. As the line lifted northeast into the northern tier of Pennsylvania, one storm became severe and produced isolated wind damage.
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The episode as NWS BGM wrote it up.
A line of showers and thunderstorms developed from near Williamsport, Pennsylvania south into Maryland in association with a surface trough and upper level disturbance. As the line lifted northeast into the northern tier of Pennsylvania, one storm became severe and produced isolated 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 Binghamton, NY wrote its last area forecast discussion before the first event at Jul 12, 3:14 PM EST, 1 hour 28 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BINGHAMTON NY 414 PM EDT MON JUL 12 2010 .SYNOPSIS... A SERIES OF DISTURBANCES WILL BRING THE CHANCE FOR SHOWERS AND THUNDERSTORMS BEGINNING LATER TODAY. THE CHANCE FOR PRECIPITATION WILL CONTINUE UNTIL THE PASSAGE OF A COLD FRONT WEDNESDAY AFTERNOON. && .NEAR TERM /UNTIL 6 AM TUESDAY MORNING/... A LINE OF CONVECTION IS INTENSIFYING FROM IPT TO BWI. THIS LINE IS LIFTING NE INTO THE SERN HALF OF THE CWA. THIS BEING PUSHED BY A SHORT WAVE AND SFC TROF. OTHER MORE SCT SHOWERS ARE IN WRN NY WHICH WILL MOVE THROUGH THE NWRN HALF OF THE CWA. THE FORCING BEHIND THIS IS NOT AS STRONG. ONCE THIS MOVES THROUGH THIS EVENING...LATE TONIGHT WILL ONLY HAVE SCT CONVECTION...WITH WEAK FORCING AND LOW LEVEL INSTABILITY. && .SHORT TERM /6 AM TUESDAY MORNING THROUGH THURSDAY/... AFTER A FAIRLY QUIET MORNING...CONVECTION WILL INCREASE AS A COLD FRONT AND SFC LOW MOVES THROUGH LATE IN THE DAY. WITH CLOUDY TO MOSTLY CLOUDY SKIES LOW LEVEL INSTABILITY WILL BE WEAK. THERE IS GOOD DYNAMICS WITH ANOTHER SHORT WAVE AND UL TROF. PWAT AGAIN RISE ABOVE 1.5 INCHES WHILE CORFIDI VECTORS ARE SMALL. WILL NEED TO WATCH FOR LOCALIZED HIGHER RAINFALL AMOUNTS. AS THE SHORT WAVE ROUNDS THE TROF TUESDAY NIGHT THE SFC LOW STRENGTHENS AND SLOWS OFF THE NEW JERSEY COAST. ON WEDNESDAY A TRANSITION DAY AS THE UL TROF MOVES SLOWLY OFF THE COAST WHILE AN UL RIDGE MOVES EAST INTO THE OHIO VALLEY. WITH THIS RIDGE...DRIER AND WARMER AIR MOVING IN FROM THE WEST. SOME LINGERING SHOWERS ACROSS THE EAST ESPECIALLY ACROSS THE HIGHER TERRAIN OF THE POCONOS AND CATSKILLS. ON THURSDAY AHEAD OF SFC COLD FRONT A SW FLOW WILL BRING IN VERY WARM AIR PUSHING TEMPS TO AROUND 90. THE COLD FRONT WILL HAVE LITTLE PUSH AS A LARGE STACKED LOW REMAINS WELL NORTH OF THE CWA CLOSE TO HUDSON BAY. NOT EXPECTING ANY PRECIP WITH THIS FRONT UNTIL THE LONG TERM. && .LONG TERM /THURSDAY NIGHT THROUGH MONDAY/... A SURFACE COLD FRONT WILL MAKE ITS WAY TOWARD THE REGION LATE THURSDAY NIGHT WITH FRONTAL PASSAGE FRIDAY INTO FRIDAY EVENING. LINGERING CONVECTION IS STILL POSSIBLE INTO SATURDAY ESPECIALLY OVER NORTHEAST PENNSYLVANIA AND THE WESTERN CATSKILLS. INCLUDED CHC POPS FOR THUNDERSTORMS FRIDAY/FRIDAY NIGHT WITH CHC/SLIGHT CHC ON SATURDAY. HIGH PRES WILL BE IN THE VCNTY SATURDAY NIGHT THROUGH SUNDAY NIGHT WITH DRY WEATHER EXPECTED. A WARM FRONT TO OUR SOUTH WILL BRING THE CHANCE FOR MORE CONVECTION MONDAY/MONDAY NIGHT. TEMPS THROUGH PERIOD WILL REMAIN ABOVE NORMAL WITH HIGHS IN THE MID/UPPER 80S AND LOWS INITIALLY IN THE MID 60S TO AROUND 70 COOLING INTO THE LOWER 60S AFTER FROPA. && .AVIATION /20Z MONDAY THROUGH SATURDAY/... OVERVIEW...VFR THRU 23Z....THEN PATCHY MVFR/IFR WITH SCT SHRA/TSRA...MOST WDSPRD IN THE 06-12Z TIME FRAME. XPCT BKN-OVC MID TO HI DECK FOR THE REMAINDER OF THE AFTN. AFTER 22-23Z...SCT CONVECTION DVLPNG OVER SW/S CNTRL PA MAY AFFECT ELM/BGM/AVP...BUT ACTIVITY WILL BE WORKING NEWD INTO A LESS FVRBL ENVIRONMENT. FOR NOW PLAYED A SCT CB GROUP STARTING AT 23Z AT THE AFOREMENTIONED SITES. BETTER CHC FOR MORE WDSPRD SHRA/TSRA APPEARS TO BE LATE TNGT/EARLY TUE MRNG AS S/WV APRCHS THE RGN. PROFILES SUGGEST THAT IF AN AREA OF SHRA/TSRA DOES DVLP...WE COULD SEE BRIEF IFR CONDITIONS. WILL BEGIN TREND IN THAT DIRECTION WITH TEMPO SHRA AND CB GROUPS/MVFR CIGS/VSBY'S IN THE 06-12Z TIME FRAME. WINDS GNRLY FROM THE S OR SE 10 KTS...G15 THIS AFTN. OUTLOOK... TUE NGT INTO WED...SCT SHOWERS/THUNDERSTORMS. CHC MVFR/IFR. WED NGT/THU/THU NGT...VFR. CHC MORNING IFR AT KELM IN FOG. FRI/FRI NGT...SCT SHOWERS/THUNDERSTORMS. CHC MVFR/IFR. SAT...VFR. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...NONE. NY...NONE. && SYNOPSIS...TAC NEAR TERM...TAC SHORT TERM...TAC LONG TERM...RRM AVIATION...
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BINGHAMTON NY 317 AM EDT MON JUL 12 2010 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-130730- NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN- SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO- OTSEGO-TIOGA-BROOME-DELAWARE-SULLIVAN-BRADFORD-SUSQUEHANNA- NORTHERN WAYNE-WYOMING-LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE- 317 AM EDT MON JUL 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .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.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
457 PM EDT MON JUL 12 2010
PAZ038-122200-
BRADFORD PA-
457 PM EDT MON JUL 12 2010
...LINE OF STRONG THUNDERSTORMS WILL AFFECT BRADFORD COUNTY...
* AT 453 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING STRONG GUSTY
WINDS. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6
MILES NORTHWEST OF CANTON TO NEW ALBANY...AND MOVING NORTHEAST AT
25 MPH.
* STRONG THUNDERSTORMS WILL BE NEAR...
WEST FRANKLIN AND SYLVANIA AT 505 PM EDT...
WILMOT AND TROY AT 510 PM EDT...
WEST BURLINGTON AND LEONA AT 515 PM EDT...
WYALUSING AND WETONA AT 520 PM EDT...
TOWANDA AND DURELL AT 525 PM EDT...
DUNNING AND GILLETT AT 530 PM EDT...
ULSTER AND SHESHEQUIN AT 535 PM EDT...
STEVENSVILLE AND HERRICKVILLE AT 540 PM EDT...
THESE STORMS HAVE THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE
HAIL AND/OR DAMAGING WINDS.
LAT...LON 4199 7693 4198 7684 4198 7616 4169 7619
4155 7633 4159 7688 4163 7690
DJNThe Binghamton radar (KBGM), 52 km away, was scanning. The volume nearest the first event began at 21:42 UTC.
1 thunderstorm wind. Local standard time, as filed.
Thunderstorm wind gusts knocked down trees and power lines.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2010Every state in 2010This day in weather historyWarnings in Pennsylvania, July 2010
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: 251316.