Showers and thunderstorms developed in the warm sector south of a warm front. These storms were slow moving and produced heavy rainfall.
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.
Showers and thunderstorms developed in the warm sector south of a warm front. These storms were slow moving and produced heavy rainfall. Isolated areas of flash flooding occurred across central New York. Most of the flooding was minor, with flooded roadways and some road closures.
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 22, 2:06 PM EST, 54 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BINGHAMTON NY 306 PM EDT WED JUN 22 2011 .SYNOPSIS... A LARGE LOW PRESSURE AREA OVER THE GREAT LAKES WILL KEEP A SOUTHERLY FLOW OF MOIST AN UNSTABLE AIR IN THE AREA INTO FRIDAY. THIS FLOW OF AIR WILL TRIGGER SHOWERS AND THUNDERSTORMS ACROSS THE AREA THROUGH THE END OF THE WEEK. && .NEAR TERM /THROUGH TONIGHT/... UPR WRM FNT HAS PASSED THRU THE AREA BUT A CONVERGENT LL FLOW AND BITS OF UPR ENERGY CONT TO PUSH THRU THE AREA. LOOKS AS THOUGH A BRK IN THE ACTION OVER SW PA WITH SINKING AIR WILL BRING A TEMPORARY END TO THE CRNT SHWRS AND STORMS THIS EVE. LTR TNGT...ANOTHER WEAK SHRT WV ROTATES THRU THE LAKES TROF AND COULD TRIGGER ADDITIONAL SHWRS AND STORMS LATE TNGT AND EARLY THU. MAIN CNRN CONTS TO BE FLASH FLOODING WITH PWATS APRCHG 2 INCHES THIS AFTN AND DEEP WRM CLD LYRS WITH WEAK STEERING CRNTS RESULTING IN SLOW MVG AND TRAINING CELLS. AREA OF NE PA WILL BE MONITORED FOR PSBL FLASH FLOOD WATCH. && .SHORT TERM /THURSDAY THROUGH SATURDAY/... SLOW MVG UPR LOW OVER THE GREAT LAKES WILL KEEP A SLY FLOW IN THE AREA THRU THE SHRT TERM. DEEP MOISTURE FLOW FROM THE GULF OF MEXICO IN THE AREA TODAY WILL BE CUT OFF BY A DRY PUNCH ON THU SO PWATS WILL DROP OFF AND FLOOD THREAT WILL GRADUALLY DIMINISH THRU THE PD. STILL...WITH DEEP UPR LOW MVG IN AND PLENTY OF LL MOISTURE AND INSTABILITY...SLOW MVG CONV WILL CONT TO BE A CNCRN AND THE SOURCE FOR POTENTIAL LOCALIZED FLOODING. THREAT FOR SVR WILL CONT INTO FRI UNTIL A COLD FNT PASSES. PRIMARY THREAT WILL BE WINDS WITH THE STRENGHTENING SW FLOW AS THE UPR LOW APRCHS...BUT HAIL ALSO WILL BECOME A CNRN WITH THE AFOREMENTIONED DRY PUNCH BRINGING SOME MID LVL DRYING. SAT LOOKS COOLER AND UNSTABLE AS THE UPR TROF LINE PASSES...WITH SHWRS AND ISLTD TRWS WITH HTG. MAIN SVR THREAT WILL HAVE PASSED BY THEN...ALTHOUGH SOME HAIL WLD NOT BE OUT OF THE QUESTION WITH THE COOLER AIR ALOFT. MAX TEMPS HIGHLY DEPENDENT ON AFTN HTG BUT WITH ALL THE MOISTURE AND THE UPR LOW...SUNSHINE SHD BE LIMITED. MODEL MACHINE GUID IN PRETTY GOOD AGREMENT AND WERE NEAR PRVS FCST...GNRLY MAXING OUT IN THE MID AND UPR 70...NEAR 80 OVER THE WYOMING VLY OF PA. NGTS WILL BE MILD WITH CLDS AND LGT FOG. && .LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/... UPDATED AT 215 PM... FOLLOWED HPC GUIDANCE CLOSELY DURING THIS PERIOD. UPPER LEVEL LONGWAVE TROF SLOWLY EXITING OFF THE EAST COAST SUNDAY WITH A WEAK COLD FRONT MOVING SOUTHEAST ACROSS NEW ENGLAND AND NY. HIGH PRESSURE BUILDS IN MONDAY WITH AN UPPER LEVEL RIDGE TO THE WEST. SHORTWAVE TUESDAY MAY HELP TRIGGER AN AFTERNOON SHOWER OR THUNDERSTORM. LOW PRESSURE MOVES UP THE OHIO VALLE INTO WESTERN PA AND NY ON WEDNESDAY MAY BRING SCATTERED SHOWERS. && .AVIATION /19Z WEDNESDAY THROUGH MONDAY/... UPDATED AS OF 2 PM WED... GENERALLY VFR WITH SCATTERED AREAS OF MVFR CIGS AND VSBYS 3 TO 5 SM IN SHRA AND LIGHT FOG OR HAZE. ISOLATED TSTMS THROUGH 22Z. ISOLATED SHOWERS ARE POSSIBLE AFTER 22Z. AREAS OF MVFR VSBY IN HAZE AND LIGHT FOG IS EXPECTED TO CONTINUE AND INCREASE INTO THE OVERNIGHT HOURS WITH LOCAL IFR FOG BETWEEN 09Z AND 15Z THU. MVFR CIGS AND SHOWERS WILL CONTINUE THU. WINDS WILL BE LIGHT AND VARIABLE OVERNIGHT AND S 5 TO 10 KT THU. OUTLOOK... FRIDAY THROUGH SATURDAY...PERIODS OF MVFR...IN SCATTERED TO WIDESPREAD SHOWERS AND THUNDERSTORMS. SUNDAY AND MONDAY...VFR. && .BGM WATCHES/WARNINGS/ADVISORIES... PA...NONE. NY...NONE. && SYNOPSIS...DGM NEAR TERM...DGM SHORT TERM...DGM LONG TERM...BMW AVIATION...BMW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BINGHAMTON NY 324 PM EDT WED JUN 22 2011 NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043- 044-047-048-072-231930- 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- 324 PM EDT WED JUN 22 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NEW YORK...SOUTHEASTERN NEW YORK AND NORTHEAST PENNSYLVANIA. .DAY ONE...THIS AFTERNOON AND TONIGHT. ABUNDANT MOISTURE AND INSTABILITY IS OVER THE AREA TODAY. SLOW MOVING THUNDERSTORMS WITH HEAVY RAIN WILL BRING THE THREAT OF FLASH FLOODING. THERE IS ALSO A SLIGHT CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING. THE MAIN THREAT IS DAMAGING CONVECTIVE WIND GUSTS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. THUNDERSTORMS WILL CONTINUE TO BE A THREAT INTO FRIDAY...WITH THE SLIGHT CHANCE OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
231 PM EDT WED JUN 22 2011
NYZ045-046-222000-
CHENANGO NY-OTSEGO NY-
231 PM EDT WED JUN 22 2011
...THUNDERSTORMS WITH VERY HEAVY RAIN WILL AFFECT SOUTHERN CHENANGO
AND SOUTHWESTERN OTSEGO COUNTIES THROUGH MID-AFTERNOON...
* AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING VERY HEAVY RAIN. THIS
STORM WAS LOCATED NEAR COVENTRY AND WAS MOVING NORTHEAST AT 15
MPH.
* THE STRONG THUNDERSTORM WILL BE NEAR...
COVENTRY... OXFORD AND GREENE THROUGH 400 PM EDT...
THIS STORM HAS THE POTENTIAL TO PRODUCE VERY HEAVY RAIN...AND COULD
CAUSE LOCALIZED FLOODING OF ROADS AND POOR DRAINAGE AREAS.
LAT...LON 4236 7519 4238 7519 4236 7526 4232 7531
4232 7542 4228 7542 4223 7563 4225 7564
4225 7579 4231 7585 4238 7586 4264 7533
4239 7512
MSESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
252 PM EDT WED JUN 22 2011
NYZ062-PAZ040-044-048-072-222015-
LACKAWANNA PA-PIKE PA-SULLIVAN NY-WAYNE PA-
252 PM EDT WED JUN 22 2011
...THUNDERSTORMS WITH VERY HEAVY RAIN WILL AFFECT NORTHWESTERN
PIKE...SOUTHERN LACKAWANNA...SOUTHERN WAYNE AND SULLIVAN
COUNTIES...
* AT 245 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SERIES OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN. THE STORMS
WERE LOCATED FROM MOSCOW TO HAWLEY TO NARROWSBURG AND WERE MOVING
NORTHEAST AT 15 MPH.
* THE STRONG THUNDERSTORM WILL BE NEAR...
MOSCOW... HAWLEY... NARROWSBURG... AND MONTICELLO THROUGH 4 PM.
RAINFALL TOTALS OF 2 TO 4 INCHES WILL BE ENOUGH TO CAUSE MINOR
FLOODING IN POOR DRAINAGE AREAS.
LAT...LON 4121 7560 4142 7572 4186 7486 4171 7451
4165 7439
MSESPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BINGHAMTON NY
328 PM EDT WED JUN 22 2011
NYZ045-046-057-222100-
CHENANGO NY-DELAWARE NY-OTSEGO NY-
328 PM EDT WED JUN 22 2011
...THUNDERSTORM WITH VERY HEAVY RAIN WILL AFFECT NORTHWESTERN
DELAWARE...OTSEGO AND SOUTHEASTERN CHENANGO COUNTIES...
* AT 323 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A LINE OF THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY RAIN.
THE LINE WAS LOCATED FROM NEAR SIDNEY... TO WELLS BRIDGE... TO
COOPERSTOWN AND WAS MOVING NORTHEAST AT 15 MPH.
* THE STRONG THUNDERSTORM WILL BE NEAR...
SIDNEY... ONEONTA... AND COOPERSTOWN THROUGH 5 PM EDT.
RAINFALL AMOUNTS OF 2 TO 4 INCHES IN THESE STORMS WILL BE ENOUGH TO
CAUSE MINOR FLOODING IN POOR DRAINAGE AREAS.
LAT...LON 4252 7470 4249 7468 4220 7551 4232 7561
4288 7501 4283 7490 4290 7488 4289 7482
4269 7464 4262 7463
MSEThe Binghamton radar (KBGM), 42 km away, was scanning. The volume nearest the first event began at 20:01 UTC.
2 flash flood. Local standard time, as filed.
Heavy rain caused flooding on multiple roads in the town of Bainbridge and New Berlin, including Buttermilk Falls Road, Hunts Pond Road, State Highway 8 and County Route 38.
Several roads were flooded, with damage to some road beds.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2011Every state in 2011This day in weather historyWarnings in New York, June 2011
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: 321163, 321174.