1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 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 17, 2:30 PM EST, 4 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BINGHAMTON NY 330 PM EDT SAT JUL 17 2004 .SHORT TERM (TONIGHT - MONDAY)... SCATTERED CONVECTION...WITH LOCALLY TORRENTIAL RAIN...WILL PERSIST ACROSS THE AREA INTO THIS EVENING. THE INTENSITY AND COVERAGE OF THE THUNDERSTORMS SHOULD GRADUALLY DIMINISH THIS EVENING AS THE ATMOSPHERE STABILIZES AFTER SUNSET. AN AMPLIFIED UPPER TROUGH FOR THIS TIME OF YEAR CONTINUES TO TAKE SHAPE ACROSS THE OHIO VALLEY. AS IMPULSES ROTATE THROUGH THIS TROUGH...MODEL CONSENSUS STILL POINTS TO LOW PRESSURE DEVELOPMENT NEAR THE EAST COAST FROM LATER TONIGHT INTO MONDAY. HOWEVER...SMALLER SCALE DETAILS WITH POSITIONING AND INTENSITY OF THESE SYSTEMS DIFFER FROM MODEL TO MODEL. GIVEN TIME OF YEAR...WE FEEL THAT A SCENARIO FEATURING SEVERAL...ILL DEFINED WAVES ALONG THE SURFACE BOUNDARY JUST TO OUR SOUTH AND EAST SEEMS REASONABLE. THAT BEING SAID...THE POTENTIAL FOR HEAVY RAIN IS STILL THERE...WITH MOIST AIR BEING PULLED OFF THE ATLANTIC AND OVER THE BOUNDARY...COUPLED WITH DECENT JET DYNAMICS. THESE TYPE OF EVENTS OVER THE SUMMER USUALLY HAVE A CONVECTIVE COMPONENT TO THEM...SO PINPOINTING CERTAIN AREAS MORE LIKELY TO HAVE HYDRO-RELATED PROBLEMS THAN OTHERS IS DIFFICULT THIS FAR OUT. AS A RESULT...WE OPTED TO CONTINUE WITH THE OUTLOOK STATEMENT FOR THE ENTIRE FORECAST AREA. AS WE GET CLOSER TO THE EVENT...HOPEFULLY WE CAN BETTER DEFINE THE GREATEST THREAT AREAS. DURING THE DAY MONDAY...THE MAIN TROUGH SHOULD START LIFTING OUT...ALBEIT SLOWLY. MORE WIDESPREAD RAINS EARLY IN THE DAY...MAINLY IN THE NORTHERN ZONES...SHOULD EVOLVE TO A SCATTERED CONVECTIVE ENVIRONMENT ONCE AGAIN BY AFTERNOON. && .LONG TERM (MON NIGHT - SATURDAY)... THE EXTENDED PERIOD WILL FEATURE MORE OF THE SAME AS THE AMPLIFIED TROUGH WILL BE VERY SLOW TO MOVE OUT. SHORT WAVE ENERGY ROTATING AROUND THE BASE OF THIS TROUGH INTERACTING WITH OLD FRONTAL BOUNDARY ALONG THE EAST COAST AND ATLANTIC MOISTURE WILL KEEP A CHANCE FOR MAINLY DIURNALLY DRIVEN PRECIPITATION IN THE FORECAST. BY THE TIME THE TROUGH STARTS TO LIFT OUT TOWARD THE END OF THE WEEK, AN APPROACHING COLD FRONT WILL KEEP CHCS FOR SHOWERS AND THUNDERSTORMS IN THE FORECAST INTO THE WEEKEND. && .AVIATION... VFR CONDITIONS TONIGHT. JUST ISOLATED THUNDERSTORMS MAY BRING OCCASIONAL MVFR CEILINGS OR VISBY WITH RAIN, BUT MOST SITES SHOULD REMAIN DRY. OTHERWISE, VFR CONDITIONS ARE EXPECTED TO CONTINUE SUNDAY MORNING WITH SOME LIGHT SHOWERS AT AVP, ELM, ITH FROM LATE MORNING POSSIBLY LOWERING CEILINGS OCCASIONALLY TO MVFR. && .BGM WATCHES/WARNINGS/ADVISORIES... NY...NONE. PA...NONE. && SHORT TERM...JUREWICZ LONG TERM AND AVIATION...JML
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BINGHAMTON NY 355 AM EDT SAT JUL 17 2004 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-171030- BRADFORD PA-BROOME NY-CHEMUNG NY-CHENANGO NY-CORTLAND NY-DELAWARE NY- LACKAWANNA PA-LUZERNE PA-MADISON NY-NORTHERN ONEIDA NY- NORTHERN WAYNE PA-ONONDAGA NY-OTSEGO NY-PIKE PA-SCHUYLER NY- SENECA NY-SOUTHERN CAYUGA NY-SOUTHERN ONEIDA NY-SOUTHERN WAYNE PA- STEUBEN NY-SULLIVAN NY-SUSQUEHANNA PA-TIOGA NY-TOMPKINS NY- WYOMING PA-YATES NY- 355 AM EDT SAT JUL 17 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...TODAY... SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON. THESE THUNDERSTORMS WILL BE SLOW MOVING AND ANY LONG-LIVED THUNDERSTORMS COULD PRODUCE VERY HEAVY RAINFALL...WITH THE POSSIBILITY OF VERY LOCALIZED FLOODING. .DAYS TWO THROUGH SEVEN... A COASTAL STORM IS EXPECTED TO TRACK ALONG THE MID-ATLANTIC AND NEW ENGLAND COASTS LATE SUNDAY INTO EARLY MONDAY. AT THIS TIME THERE IS STILL A GREAT DEAL OF UNCERTAINTY AS TO STORM TRACK AND RAINFALL AMOUNTS...BUT THERE IS POTENTIAL FOR SIGNIFICANT RAINFALL TO PRODUCE FLOODING ACROSS CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA. SEE ALBESFBGM FOR DETAILS. .SPOTTER CALL TO ACTION STATEMENT... SKYWARN ACTIVATION IS NOT EXPECTED TODAY OR TONIGHT. MJC
The Binghamton radar (KBGM), 45 km away, was scanning. The volume nearest the first event began at 23:29 UTC.
1 flash flood. Local standard time, as filed.
Thunderstorms with heavy rain caused flash flooding. Flooding occurred around Alford and US Route 11 in the town of Harford.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2004Every state in 2004This day in weather historyWarnings in Pennsylvania, July 2004
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: 5415829.