An unseasonably strong storm system, tapping into above normal moisture sources across the Great Lakes and Northeast, triggered multiple heavy rain producing thunderstorms across the region. Localized torrential rainfall in central New York caused serious urban flash flooding in the Syracuse, NY metropolitan area during the late evening hours of June 30th, and early morning hours of July 1st.
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 unseasonably strong storm system, tapping into above normal moisture sources across the Great Lakes and Northeast, triggered multiple heavy rain producing thunderstorms across the region. Localized torrential rainfall in central New York caused serious urban flash flooding in the Syracuse, NY metropolitan area during the late evening hours of June 30th, and early morning hours of July 1st. Damages are estimated between three and five million dollars.
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 Jun 30, 9:53 PM EST, 2 hours 9 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BINGHAMTON NY 1053 PM EDT TUE JUN 30 2015 .SYNOPSIS... SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH THE OVERNIGHT AS UPPER LEVEL DISTURBANCES CROSS THE REGION. MORE SHOWERS AND THUNDERSTORMS ARE EXPECTED ON WEDNESDAY AS A COLD FRONT CROSSES THE AREA. HIGH PRESSURE WILL PROVIDE FAIR WEATHER FOR THE END OF THE WEEK. && .NEAR TERM /THROUGH WEDNESDAY/... 1045 PM UPDATE... THINGS ACTUALLY TURNED FAIRLY ACTIVE THE LAST FEW HOURS DESPITE EXPIRATION OF THE SVR WATCH...ESPECIALLY REGARDING LOCALIZED FLOODING. SYRACUSE AREA THROUGH NORTHEASTERN ONONDAGA COUNTY IN PARTICULAR HAS HAD REPEATED HEAVY THUNDERSTORMS/BACKBUILDING...2-3 BATCHES DEPENDING ON LOCATION...WHICH HAS RESULTED IN FLASH FLOODING. NUMEROUS REPORTS OF WATER MAKING ROADS IMPASSABLE...CARS STUCK IN WATER...WATER IN BASEMENTS AND THE LIKE WHICH IS COMMON WHEN HEAVY RAIN STRIKES AND URBANIZED AREA. HEAVY RAIN HAS OCCURRED ELSEWHERE IN OUR REGION AS WELL BUT PROBLEMS MUCH MORE LOCALIZED AND MINOR. FINALLY...STORMS HAVE IGNITED IN WYOMING- LUZERNE COUNTIES IN PA HEADING INTO LACKAWANNA...WHICH APPEARS TO HAVE GONE SEVERE. WARNING UNTIL 1130 PM THERE DUE TO EXPECTED GUSTS TO 60 MPH. THINGS WILL WIND DOWN AFTER MIDNIGHT BUT WILL HAVE TO WATCH THINGS CAREFULLY THE NEXT 24 HRS SINCE ANY ADDITIONAL RAINFALL COULD CAUSE PROBLEMS FOR AREAS THAT JUST RECEIVED HEAVY RAIN. 645 PM UPDATE... SVR TSTORM WATCH CONTINUES UNTIL 8PM FOR NEPA AND SULLIVAN CO NY...THOUGH AT THIS POINT LOCALIZED HEAVY RAINFALL /ESPECIALLY PIKE COUNTY/ APPEARS TO THE BE MORE OF A CONCERN. IT IS LIKELY THAT WE WILL BE ABLE TO DROP THE WATCH AT 8PM AS SCHEDULED...MEANWHILE...WE ALREADY HAVE A STATEMENT OUT FOR PIKE COUNTY REGARDING LOCALIZED HEAVY RAIN AND WILL KEEP A CLOSE EYE ON THAT AREA. FURTHER NORTH...CONVECTION HAS BEEN PRETTY WIDELY SCATTERED THOUGH WE DO HAVE A HEAVY RAINER CARRYING ACROSS NORTHERN ONONDAGA AT THIS TIME. MEANWHILE...WELL MARKED WAVE NOW IN WESTERN PA WILL MOVE THROUGH BETWEEN 10PM-2AM TO CAUSE ADDITIONAL SHOWERS-EMBEDDED THUNDER. IF THINGS HOLD TOGETHER...AS MENTIONED BELOW...SHORT FUSED FLASH FLOOD WATCH COULD BE NECESSARY FOR AREAS ALREADY GETTING DECENT RAIN BEFOREHAND. PREVIOUS DISCUSSION... AT 4 PM...SFC ANALYSIS SHOWS A WARM FRONT DRAPED ACROSS THE ERN CWA FROM THE VCNTY OF SYR DOWN THROUGH THE SUSQUEHANNA REGION INTO NE PA. THIS BOUNDARY WILL MAKE SLOW PROGRESS EAST THROUGH EVENING. ACTIVITY ALONG AND EAST OF THIS BOUNDARY IS WIDESPREAD WITH JUST SCATTERED CONVECTION ELSEWHERE. INSTABILITY AND LOW LEVEL SHEAR IS BEST ACROSS NE PA AND SRN NY WHERE THE WATCH CURRENTLY RESIDES. BY EARLY EVENING INSTABILITY AND LOW LEVEL SHEAR WILL BOTH DECREASE, REDUCING THE THREAT FOR SVR WEATHER. A MOIST SW FLOW WILL CONTINUE OVER THE AREA THROUGH TONIGHT. A MID LEVEL SHORT WAVE CURRENTLY MOVING THROUGH OHIO WILL LIFT NE AND ACROSS THE FA LATER THIS EVENING. THIS FEATURE WILL KEEP CONVECTION GOING THROUGH AT LEAST LATE EVENING. DUE TO RECENT WET WEATHER IF THIS SECOND ROUND OF CONVECTION TAKES AIM AT NE PA A SHORT FUSE FLASH FLOOD WATCH MAY BE NEEDED. ON WEDNESDAY...H5 TROF AND SFC COLD FRONT WILL MOVE THROUGH FA DURING THE LATE MORNING THROUGH AFTERNOON PERIOD. WIDESPREAD TO SCATTERED CONVECTION WILL OCCUR WITH THIS BOUNDARY. INSTABILITY LOOKS BEST FROM I81 EAST WHERE THE ATMOSPHERE WILL HAVE THE LONGEST TIME TO DESTABILIZE. BULK SHEAR VALUES AND MID LEVEL FLOW NOT AS SIGNIFICANT AS TODAY BUT STORMS MAINLY EAST OF I81 COULD PRODUCE SOME GUSTY WINDS. && .SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/... UPPER LEVEL TROF WILL REMAIN OVER THE NE THROUGH THURSDAY FOLLOWED BY UPPER LEVEL RIDGING THURSDAY NIGHT AND FRIDAY. AT THE SFC HIGH PRES OVER THE UPPER GREAT LAKES WILL SLOWLY BUILD SOUTH OVER THE FA BRINGING A PERIOD OF DRY WEATHER. THURSDAY WILL BE COOL UNDER NW FLOW AND MAX TEMPS IN THE LOWER TO MIDDLE 70S CNTRL NY AND MID/UPR 70S OVER NE PA. ON FRIDAY, ABUNDANT SUNSHINE WILL ALLOW TEMPS TO REACH SEASONAL NORMALS. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... A TROF OVER LOWER ONTARIO WILL PRESS EASTWARD ON SATURDAY, CAUSING A FEW SHOWERS AND THUNDERSTORMS LATER SATURDAY OVER NY AND PA. A WEAK RIDGE WILL REBUILD FOR SUNDAY, WITH TEMPERATURES PUSHING INTO THE 80S. THE RIDGE WILL KEEP WEATHER FAIR INTO MONDAY BEFORE THE NEXT TROF SWINGS INTO THE REGION NEXT WEEK. && .AVIATION /03Z WEDNESDAY THROUGH SUNDAY/... 00Z UPDATE... LEFTOVERS OF AFTERNOON CONVECTION ARE PESTERING THE TERMINALS EARLY IN THE TAF PERIOD...AND THEN MORE SHRA-EMBEDDED TSRA LATER THIS EVENING ASSOCIATED WITH A WAVE ALOFT. WITH THE CONVECTION MVFR TO BRIEF IFR CONDITIONS ARE POSSIBLE /CIG AND VIS/...THEN BEHIND IT...FUEL ALT CIGS WILL SETTLE ACROSS THE TERMINALS...AND EVEN EVENTUAL IFR KBGM-KELM-KAVP. IMPROVEMENT WILL OCCUR 12Z-15Z BUT A COLD FRONT WILL PASS THROUGH WITH NEW SHRA- TSRA SHORTLY THEREAFTER. PROB30 GROUPS INSERTED FOR ALL EXCEPT KAVP WHERE CONFIDENCE IS LESS...SEE INDIVIDUAL TAFS FOR TIMING SPECIFICS. GENERALLY SPEAKING FOR WINDS...LIGHT SE TO S OR VARIABLE THIS EVENING...VEERING SW INTO WED MORNING THEN W BEHIND COLD FRONT DURING THE DAY WITH GUSTS INTO MID TEENS RANGE. .OUTLOOK... WED NGT-EARLY THU...EARLY MORNING LOW CLOUDS OR FOG POSSIBLE FOR SEVERAL TERMINALS...ESPECIALLY VALLEYS LIKE KELM. MID MORNING THU THROUGH FRI...MAINLY VFR. SAT...CHANCE OF SCT SHRA/TSRA AND ASSOCIATED RESTRICTIONS. SUN...MAINLY VFR. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...NONE. NY...NONE. && SYNOPSIS...RRM NEAR TERM...MDP/RRM SHORT TERM...RRM LONG TERM...DJP AVIATION...MDP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BINGHAMTON NY 807 PM EDT TUE JUN 30 2015 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-020015- 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- 807 PM EDT TUE JUN 30 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...TONIGHT. CLUSTERS OF SHOWERS AND THUNDERSTORMS WILL OCCUR OVERNIGHT. NO SEVERE THUNDERSTORMS ARE EXPECTED...HOWEVER...LOCALIZED HEAVY RAINFALL IS POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. A COLD FRONT WILL MOVE THROUGH THE REGION WITH SHOWERS AND THUNDERSTORMS WEDNESDAY. SOME STORMS COULD CONTAIN STRONG GUSTY WINDS...ESPECIALLY EAST OF I-81. OTHERWISE...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME FOR WEDNESDAY NIGHT THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT IF HEAVY RAINFALL AMOUNTS OR LOCALIZED FLOODING OCCURS OVERNIGHT. ALSO...SPOTTER ACTIVATION MAY BE NEEDED WEDNESDAY.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1043 PM EDT TUE JUN 30 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1042 PM FLASH FLOOD 1 N EAST SYRACUSE 43.08N 76.07W
06/30/2015 ONONDAGA NY 911 CALL CENTER
PARTIAL BUILDING COLLAPSE.
&&
EMGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1131 PM EDT TUE JUN 30 2015
PAZ044-047-072-010445-
LACKAWANNA PA-LUZERNE PA-SOUTHERN WAYNE PA-
1131 PM EDT TUE JUN 30 2015
...HEAVY RAINFALL WILL AFFECT THE GREATER SCRANTON AND WILKES
BARRE AREAS THROUGH 1 AM...
* AT 1126 PM EDT...DOPPLER RADAR INDICATED HEAVY RAINFALL MOVING
INTO THE GREATER SCRANTON AND WILKES BARRE AREAS. HEAVY RAIN WILL
AFFECT AREAS FROM CARBONDALE SOUTH THROUGH THE JESSUP...SCRANTON
AND WILKES BARRE AREAS.
* THERE IS A POTENTIAL FOR HEAVY RAINFALL TO COULD CAUSE LOCALIZED
FLOODING OF ROADS AND POOR DRAINAGE AREAS. URBANIZED AREAS WITH
POOR DRAINAGE COULD FLOOD VERY QUICKLY.
* LOCATIONS THAT WILL BE IMPACTED BY THE HEAVY RAINFALL INCLUDE...
SCRANTON...WILKES-BARRE...CARBONDALE...PITTSTON...DUNMORE...OLD
FORGE...ARCHBALD...DICKSON CITY...MOOSIC...OLYPHANT...CLARKS
SUMMIT...EDWARDSVILLE...LUZERNE...WEST WYOMING...MOSCOW...
MAYFIELD...CLARKS GREEN...WAYMART...SUGAR NOTCH AND ELMHURST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORRENTIAL RAINFALL WILL OCCUR WITH THIS STORM...AND COULD LEAD TO
SIGNIFICANT URBAN FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.
&&
LAT...LON 4113 7592 4125 7604 4164 7549 4164 7547
4159 7537 4130 7556
TIME...MOT...LOC 0326Z 240DEG 0KT 4136 7567
DJNSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1142 PM EDT TUE JUN 30 2015
PAZ039-040-044-072-010430-
SUSQUEHANNA PA-LACKAWANNA PA-NORTHERN WAYNE PA-SOUTHERN WAYNE PA-
1142 PM EDT TUE JUN 30 2015
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN
SUSQUEHANNA...CENTRAL WAYNE AND NORTHEASTERN LACKAWANNA COUNTIES ...
* AT 1141 PM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR ROYAL TO NEAR
CARBONDALE TO MOUNT COBB...AND MOVING NORTHEAST AT 35 MPH.
* WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.
* STRONG THUNDERSTORMS WILL BE NEAR...
CARBONDALE AROUND 1145 PM EDT.
TRESSLARVILLE AND LAKE ARIEL AROUND 1150 PM EDT.
FOREST CITY AND WAYMART AROUND 1155 PM EDT.
UNION DALE AROUND 1200 AM EDT.
HONESDALE...PROMPTON AND PLEASANT MOUNT AROUND 1205 AM EDT.
BETHANY AROUND 1210 AM EDT.
RUTLEDGEDALE AROUND 1215 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
&&
LAT...LON 4188 7532 4181 7512 4164 7505 4137 7549
4154 7561 4162 7571
TIME...MOT...LOC 0341Z 234DEG 31KT 4163 7562 4159 7555 4142 7548
DJNSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1150 PM EDT TUE JUN 30 2015
NYZ062-010500-
SULLIVAN NY-
1150 PM EDT TUE JUN 30 2015
...LOCALLY HEAVY RAINFALL WILL AFFECT SOUTHERN SULLIVAN COUNTY...
* AT 1148 PM EDT...DOPPLER RADAR INDICATED LOCALLY HEAVY RAINFALL
ACROSS PARTS OF SOUTHERN SULLIVAN COUNTY.
* THE HEAVY RAINFALL COULD CAUSE LOCALIZED FLOODING OF ROADS AND
POOR DRAINAGE AREAS.
* LOCATIONS THAT WILL BE IMPACTED BY THE HEAVY RAINFALL INCLUDE...
MONTICELLO...SOUTH FALLSBURG...WURTSBORO...OTISVILLE...WOODRIDGE...
BLOOMINGBURG...KIAMESHA...GLEN SPEY...THOMPSONVILLE...HARTWOOD...
HAVEN...PHILLIPSPORT...HIGHLAND LAKE...LAVA...HIGHVIEW...
MAPLEWOOD...SMALLWOOD...ROCK HILL...ELDRED AND MONGAUP VALLEY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
VISIBILITIES WILL BE REDUCED DUE TO THE HEAVY RAINFALL AND MAY CAUSE
PONDING OF WATER ON ROADWAYS. PLEASE DRIVE SAFELY.
TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
MORE SIGNIFICANT FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH
FLOODED ROADWAYS.
&&
LAT...LON 4157 7442 4150 7449 4150 7475 4149 7476
4142 7476 4142 7480 4144 7481 4144 7488
4161 7506 4173 7455 4165 7440 4159 7436
TIME...MOT...LOC 0348Z 234DEG 0KT 4150 7458
DJNPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1206 AM EDT WED JUL 01 2015
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 PM FLASH FLOOD CICERO 43.18N 76.12W
06/30/2015 ONONDAGA NY FIRE DEPT/RESCUE
AT LEAST DOZEN ROADS FLOODED IN TOWN OF CICERO WITH
BETWEEN 1-3 FT OF WATER. FIRE DEPT CALLS STARTED BY
930PM... CONTINUED THROUGH EVENING.
&&
MDPSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1242 AM EDT WED JUL 1 2015
NYZ046-010515-
OTSEGO NY-
1242 AM EDT WED JUL 1 2015
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN OTSEGO
COUNTY ...
* AT 1241 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM RICHFIELD SPRINGS TO NEAR
COOPERSTOWN TO ELK CREEK...AND MOVING NORTHEAST AT 30 MPH.
* WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THESE STORMS.
* STRONG THUNDERSTORMS WILL BE NEAR...
MIDDLEFIELD AROUND 1245 AM EDT.
SPRINGFIELD AROUND 1250 AM EDT.
CHERRY VALLEY AROUND 100 AM EDT.
LAT...LON 4258 7486 4272 7498 4284 7513 4290 7508
4283 7491 4283 7489 4290 7488 4283 7465
4276 7467 4266 7464
TIME...MOT...LOC 0441Z 241DEG 24KT 4286 7502 4275 7489 4262 7484
DJNThe Ft Drum radar (KTYX), 86 km away, was scanning. The volume nearest the first event began at 04:59 UTC.
2 flash flood. Local standard time, as filed.
Flooding closed parts of Thompson Road in Dewitt, NY for several hours.
Flood waters were reported to be up past the tires on several cars and trucks in the area. Widespread street flooding was reported around the City.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2015Every state in 2015This day in weather historyWarnings in New York, July 2015
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: 596772, 596773.