An upper level low pressure system pushed a slow moving cold front across upstate New York during the afternoon. Scattered thunderstorms developed along and near the front, and several of these storms produced large hail and damaging winds.
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 BGM wrote it up.
An upper level low pressure system pushed a slow moving cold front across upstate New York during the afternoon. Scattered thunderstorms developed along and near the front, and several of these storms produced large hail and damaging winds.
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 26, 3:06 PM EST, 39 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BINGHAMTON NY 406 PM EDT SUN JUL 26 2009 .SYNOPSIS... SCATTERED TO NUMEROUS THUNDERSTORMS WILL SLOWLY DIMINISH TONIGHT...AS A FRONTAL BOUNDARY WEAKENS. MONDAY AND TUESDAY SHOULD BE DRIER THAN RECENT DAYS...WITH SEASONABLE TEMPERATURES. HIT AND MISS SHOWERS AND THUNDERSTORMS ARE POSSIBLE MONDAY AFTERNOON...BUT MANY PLACES WILL BE RAIN-FREE. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... ...UPDATED AT 405 PM... SHORT CONVECTIVE LINES ARE SLOWLY INCREASING ACROSS NY/PA AT THIS TIME...AS FORCING FROM AN UPPER-LEVEL WAVE INTERACTS WITH A MOIST/DESTABILIZING AIR MASS IN PLACE. THE MOST NUMEROUS STORMS ARE STILL ANTICIPATED TO OCCUR ACROSS OUR SOUTHEASTERN ZONES LATE THIS AFTERNOON INTO THE EARLY EVENING...CLOSER TO A RESIDUAL FRONTAL BOUNDARY...HIGHER DEW POINTS...AND THE STRONGEST DEEP-LAYERED SHEAR. WE BELIEVE OUR GREATEST SEVERE THREAT WILL BE EAST OF INTERSTATE 81 AND SOUTH OF INTERSTATE 88...ALTHOUGH MORE ISOLATED SEVERE COULD ALSO OCCUR FARTHER NORTH AND WEST. A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR MUCH OF NORTHEAST PA...AND PORTIONS OF NYS SOUTHERN TIER. BY LATER THIS EVENING...CONVECTION SHOULD DIMINISH...AS FORCING WANES AND THE ENVIRONMENT STABILIZES. PATCHY FOG MAY FORM LATE AT NIGHT...ESPECIALLY WHERE MORE RAIN FALLS. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/... MONDAY AND TUESDAY LOOK QUIETER THAN RECENT DAYS...AS HEIGHTS ARE PROGGED TO RISE OVER THE NORTHEASTERN U.S. ONE MORE UPPER-LEVEL WAVE IS EXPECTED TO TRAVERSE THE FORECAST AREA MONDAY AFTERNOON...SO WEVE RETAINED A MENTION OF SHOWERS AND STORMS. FROM THIS VANTAGE POINT...TUESDAY LOOKS MOSTLY RAIN-FREE. BY WEDNESDAY AFTERNOON...THE NEXT COLD FRONT IS EXPECTED TO APPROACH FROM THE NORTH AND WEST...WITH AN INCREASING CHANCE OF SHOWERS AND THUNDERSTORMS AGAIN AT THAT TIME. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... USED HPC GUIDE FOR EXTENDED WHICH WAS PRIMARILY BASED ON ECMWF AND ENSEMBLES. THE PATTERN OF THE LAST WEEK WILL CONTINUE THROUGH THE NEXT WEEK AS WELL. LONG WAVE TROUGH OVER GREAT LAKES WITH MOIST SOUTHWESTERLY FLOW ACROSS PA AND NY. THIS WILL KEEP CLOUDS...NEAR SEASONABLE TEMPS...SCATTERED SHOWERS...AND AFTERNOON THUNDERSTORMS IN THE FORECAST THROUGH NEXT WEEKEND. && .AVIATION /20Z SUNDAY THROUGH FRIDAY/... GENERALLY VFR ACROSS THE AREA WITH SCATTERED MVFR CIGS IN SHOWERS. INCREASING SHOWERS AND THUNDERSTORMS EXPECTED THIS AFTERNOON AND EVENING WITH HEAVY RAIN AND GUSTY WINDS AND IFR CONDITIONS. STORMS WILL DIMINISH AFTER 00Z WITH SKIES GENERALLY VFR. AFTER 08Z AREAS OF MVFR VSBY IN FOG AND CIGS IN STRATUS IS POSSIBLE ACROSS THE SRN TIER NY AND NE PA. KELM MAY GO IFR IN THE VALLEY BETWEEN 09 AND 13Z. AFT 15Z MON VFR. OUTLOOK... MON NIGHT THROUGH FRI...MAINLY VFR RETURNS...BUT BRIEF RESTRICTIONS POSSIBLE IN AFTERNOON/EVENING THUNDERSTORMS. EARLY MORNING RESTRICTIONS ALSO POSSIBLE IN FOG...MOSTLY KELM. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...NONE. NY...NONE. && SYNOPSIS...MLJ NEAR TERM...MLJ SHORT TERM...MLJ LONG TERM...BMW AVIATION...BMW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BINGHAMTON NY 404 PM EDT SUN JUL 26 2009 NYZ056-057-062-PAZ039-040-043-044-047-048-072-272015- BROOME-DELAWARE-SULLIVAN-SUSQUEHANNA-NORTHERN WAYNE-WYOMING- LACKAWANNA-LUZERNE-PIKE-SOUTHERN WAYNE- 404 PM EDT SUN JUL 26 2009 ...SEVERE THUNDERSTORM WATCH 626 IN EFFECT UNTIL 11 PM EDT THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. SEVERE THUNDERSTORM WATCH. THUNDERSTORMS WILL SLOWLY INCREASE IN COVERAGE LATE THIS AFTERNOON INTO THE EARLY EVENING. SOME OF THESE STORMS MAY BECOME SEVERE...WITH LARGE HAIL...STRONG WINDS...AND HEAVY RAIN THE PRIMARY THREATS. STORMS SHOULD DIMINISH...BOTH IN INTENSITY AND COVERAGE...LATER THIS EVENING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON. NYZ009-015>018-022>025-036-037-044>046-055-PAZ038-272015- NORTHERN ONEIDA-YATES-SENECA-SOUTHERN CAYUGA-ONONDAGA-STEUBEN- SCHUYLER-CHEMUNG-TOMPKINS-MADISON-SOUTHERN ONEIDA-CORTLAND-CHENANGO- OTSEGO-TIOGA-BRADFORD- 404 PM EDT SUN JUL 26 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT. SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EARLY EVENING. ISOLATED SEVERE STORMS ARE POSSIBLE...WITH LARGE HAIL...STRONG WINDS...AND HEAVY RAIN THE PRIMARY THREATS. STORMS SHOULD DIMINISH AFTER 7 PM. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. MJ
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BINGHAMTON NY 245 PM EDT SUN JUL 26 2009 NYZ015>017-261945- CAYUGA NY-SENECA NY-YATES NY- 245 PM EDT SUN JUL 26 2009 ...STRONG THUNDERSTORM WILL AFFECT EXTREME NORTHEASTERN YATES... NORTHERN SENECA AND WEST CENTRAL CAYUGA COUNTIES... * AT 243 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...STRONG GUSTY WINDS...AND VERY HEAVY RAIN. THIS STORM WAS LOCATED 6 MILES WEST OF WATERLOO...AND MOVING NORTHEAST AT 15 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... PACKWOOD CORNERS AT 255 PM EDT... WATERLOO AT 300 PM EDT... DUBLIN AND SENECA FALLS AT 310 PM EDT... MAGEE AT 315 PM EDT... LEHIGH VALLEY JUNCTION AND CAYUGA AT 320 PM EDT... TYRE AT 325 PM EDT... MONTEZUMA AT 340 PM EDT... THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL AND/OR DAMAGING WINDS. IF ON OR NEAR THE NORTHERN ENDS OF SENECA AND CAYUGA LAKES...SEEK SHELTER NOW. GET OUT OF THE WATER AND MOVE INDOORS OR INSIDE A VEHICLE. TAC
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BINGHAMTON NY 322 PM EDT SUN JUL 26 2009 NYZ023>025-055-PAZ038-262015- BRADFORD PA-CHEMUNG NY-SCHUYLER NY-TIOGA NY-TOMPKINS NY- 322 PM EDT SUN JUL 26 2009 ...STRONG THUNDERSTORM WILL AFFECT CHEMUNG...EXTREME SOUTHEASTERN SCHUYLER...NORTHWESTERN BRADFORD...SOUTHWESTERN TOMPKINS AND WEST CENTRAL TIOGA COUNTIES... * AT 321 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...STRONG GUSTY WINDS...AND VERY HEAVY RAIN. THIS STORM WAS LOCATED NEAR PINE CITY...AND MOVING NORTHEAST AT 25 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... SOUTHPORT AND WEST ELMIRA AT 335 PM EDT... ELMIRA AND LOWMAN AT 340 PM EDT... HORSEHEADS AT 345 PM EDT... HORSEHEADS NORTH AT 350 PM EDT... BREESPORT AND OWENS MILL AT 355 PM EDT... ERIN AND LOCKWOOD AT 405 PM EDT... SWARTWOOD AND CAYUTA AT 410 PM EDT... VAN ETTEN AND NORTH SPENCER AT 415 PM EDT... THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL AND/OR DAMAGING WINDS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY MJ
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BINGHAMTON NY 435 PM EDT SUN JUL 26 2009 NYZ025-044-055-056-262130- BROOME NY-CORTLAND NY-TIOGA NY-TOMPKINS NY- 435 PM EDT SUN JUL 26 2009 ...STRONG THUNDERSTORM WILL AFFECT EXTREME SOUTHERN CORTLAND...NORTHERN BROOME...SOUTHEASTERN TOMPKINS AND TIOGA COUNTIES... * AT 435 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CAPABLE OF PRODUCING SMALL HAIL...STRONG GUSTY WINDS...AND VERY HEAVY RAIN. THIS STORM WAS LOCATED NEAR SPENCER...AND MOVING NORTHEAST AT 15 MPH. * THE STRONG THUNDERSTORM WILL BE NEAR... WEST CANDOR AT 450 PM EDT... CATATONK AT 455 PM EDT... CATATONK AND WILLSEYVILLE AT 500 PM EDT... CANDOR AT 505 PM EDT... WELTONVILLE AT 515 PM EDT... JENKSVILLE AT 520 PM EDT... WEST NEWARK AND JENKSVILLE AT 525 PM EDT... NEWARK VALLEY AND BERKSHIRE AT 530 PM EDT... THIS STORM HAS THE POTENTIAL TO BECOME SEVERE AND PRODUCE LARGE HAIL AND/OR DAMAGING WINDS. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY MJ
The Binghamton radar (KBGM), 29 km away, was scanning. The volume nearest the first event began at 20:45 UTC.
7 thunderstorm wind, 2 hail. Local standard time, as filed.
Several trees were blown down in the town of Candor.
Numerous trees and wires were blown down across Newark Valley.
Numerous trees and wires were knocked down on Greenwood Park Road in Nanticoke.
A large part of a tree was snapped off on Ketchumville Road in East Berkshire.
A downed tree blocked Fikes Road, and wires were also blown down.
Trees and wires were blown down in and around Norwich.
Two trees were blown down on County Highway 28 in the town of Otsego.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2009Every state in 2009This day in weather historyWarnings in New York, July 2009
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: 187513, 187511, 187510, 187516, 187507, 187508, 187519, 187514, 187520.