A slow moving frontal boundary moved eastward across New York State between Monday September 5th, and Tuesday September 6th. The front then moved south and east of the state by late Tuesday, as waves of low pressure continued to travel northeast along the boundary.
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 ALY wrote it up.
A slow moving frontal boundary moved eastward across New York State between Monday September 5th, and Tuesday September 6th. The front then moved south and east of the state by late Tuesday, as waves of low pressure continued to travel northeast along the boundary. In addition, copious amounts of moisture from the remnants of Tropical Storm Lee, which made landfall along the Gulf coast, interacted with the frontal system from Wednesday into Thursday September 8th, producing additional heavy rainfall. Total rainfall amounts across eastern New York for the period from Monday into Thursday ranged from 4 to 8 inches, with the greatest amounts occurring across portions of the eastern Catskills.
This heavy rainfall, combined with saturated soil from the excessive rains which fell in late August associated with the passage of Irene, led to widespread minor to moderate flooding on rivers, as well as small streams and creeks across eastern New York. Some major flooding did occur across portions of the western Mohawk River. In addition, flash flooding occurred across portions of the eastern Catskills and western Mohawk River Valley.
A washout occurred on Route 67 near Pine Lake Way in Pittstown. There was a partial lane closure on Route 159, Mariaville Road, in Pattersonville about 1 mile east of Route 30 due to a slope failure.
Flooding damaged an 80-mile section of the Erie Canal from Waterford to Herkmier. The Erie Canal from Waterford to Syracuse remained closed due to the catastrophic flooding that overwhelmed the locks and did extensive damage. The Erie and Oswego Canal navigation route between Lake Ontario and the Hudson River reopened on Sunday, November 20th and remained open until Saturday, December 3rd to allow stranded vessels to reach their destinations for the season.
On September 13th, 2011 a Major Disaster Declaration was declared, FEMA-4031-DR. This declaration made Individual Assistance available to 13 counties in New York State including Fulton, Herkimer, Schenectady, Schoharie, and Ulster counties in east central New York. Public Assistance was made available to 14 counties including Herkimer, Montgomery, Schenectady, Schoharie, and Ulster counties in east central New York.
In addition, the declaration made Hazard Mitigation Grant Program assistance available. It was estimated that in New York 1,763 residences were impacted with 142 destroyed, 1,208 sustaining major damage, 137 sustaining minor damage, and 276 categorized as affected (still habitable with some damage to structure and contents).
Individual Assistance: assistance to individuals and households. Public Assistance: assistance to state and local governments and certain private nonprofit organizations for emergency work and repair or replacement if disaster-damaged facilities.
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 Albany, NY wrote its last area forecast discussion before the first event at Sep 6, 5:54 AM EST, 31 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE ALBANY NY 654 AM EDT TUE SEP 6 2011 .SYNOPSIS... A SLOW MOVING COLD FRONT WILL SETTLE SOUTH OF THE REGION TODAY...WITH A BRIEF RESPITE FROM THE RAINFALL POSSIBLE THIS AFTERNOON AND EVENING...ESPECIALLY NORTH OF ALBANY. THE FRONT WILL RETURN NORTHWARD LATE TONIGHT INTO WEDNESDAY...ALLOWING RAIN TO REDEVELOP FROM SOUTH TO NORTH. LOCALLY HEAVY RAIN WILL BE POSSIBLE...ESPECIALLY ACROSS WESTERN PORTIONS OF THE REGION WEDNESDAY AND WEDNESDAY NIGHT. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... AS OF 645 AM EDT...THE LARGE RAIN SHIELD IS FINALLY SHIFTING S/E...AND DECREASING IN INTENSITY AS PER EXPECTATIONS GIVEN WEAKENING DYNAMICS AND DEPARTING UPPER LEVEL JET. GIVEN RECENT RADAR TRENDS...HAVE ELIMINATED POPS ACROSS FAR NW AREAS FOR TODAY...AND TAPERED THEM FURTHER A BIT FURTHER S/E INTO THE LAKE GEORGE REGION AND WESTERN MOHAWK VALLEY. IT APPEARS THAT THESE AREAS SHOULD GET A BREAK FROM THE RAIN AS EARLY AS THIS MORNING...INTO THE AFTERNOON. FURTHER S/E...THE NORTHERN PERIPHERY OF ADDITIONAL LIGHT RAIN MAY OCCASIONALLY GRAZE PORTIONS OF THE SARATOGA REGION INTO SOUTHERN VT...SO WILL KEEP LOW CHC TO SLIGHT CHC POPS FOR THESE AREAS. ALL OTHER AREAS REMAIN SAME WITH REGARD TO POPS. HAVE ALSO CANCELLED THE FFA GIVEN DECREASING TREND OF RAINFALL RATES WITHIN RAIN SHIELD. OTHERWISE...JUST ADDITIONAL MINOR TWEAKS TO HOURLY TEMPS/DEWPOINTS AND WIND BASED ON OBS. PREVIOUS DISCUSSION FOLLOWS... AS OF 5 AM EDT...A LARGE SHIELD OF LIGHT TO MODERATE RAINFALL CONTINUES ACROSS MOST OF THE FORECAST AREA...ALONG WITH SOME EMBEDDED ELEMENTS OF HEAVY RAIN. THIS RAINFALL APPEARS TO BE IN ASSOCIATION AN UPPER LEVEL JET MAX OF 130-140 KT...CURRENTLY TRANSLATING E ACROSS NORTHERN NEW ENGLAND/SOUTHERN QUEBEC...PLACING OUR REGION WITHIN THE RIGHT ENTRANCE REGION. THIS ALSO HAS ALLOWED FOR ENHANCED MID LEVEL FRONTOGENETICAL FORCING...ALLOWING FOR THIN BANDS OF HEAVIER RAIN TO OCCUR...WITH HOURLY RAINFALL RATES OF 0.25-0.35 INCH/HOUR. ALTHOUGH THE THREAT FOR TRUE FLASH FLOODING IS DECREASING...CAN NOT RULE OUT SOME FLOODING...AND FELT BEST TO CONTINUE WITH FLASH FLOOD WATCH RATHER THAN CANCEL. THE AFOREMENTIONED JET MAX AND ASSOCIATED FORCING SHOULD GRADUALLY WEAKEN AND MOVE FURTHER N/E OF THE REGION LATER THIS MORNING...WITH WEAK FORCING REMAINING OVER THE REGION THIS AFTERNOON...MAINLY INCREASING ISENTROPIC LIFT ACROSS SOUTHERN AREAS. WE FEEL THAT THE RAIN MAY TAPER OFF FROM NW TO SE LATER THIS MORNING INTO THE AFTERNOON FOR AREAS N OF THE MOHAWK RIVER VALLEY INTO SOUTHERN VT...AND POSSIBLY INTO THE CAPITAL REGION FOR A TIME DURING THE AFTERNOON HOURS. IN FACT...SKIES MAY EVEN BRIGHTEN AT TIMES/WITH SOME BREAKS IN THE CLOUDS POSSIBLE/ACROSS NORTHERN AREAS. FOR SOUTHERN AREAS...PERIODS OF RAIN WILL LIKELY CONTINUE MUCH OF THE DAY...ALTHOUGH A FEW DRY STRETCHES WILL BE POSSIBLE THIS AFTERNOON. EXPECT A COOL DAY...WITH MAXES MAINLY 65-70 WITHIN THE HUDSON RIVER VALLEY...WARMEST ACROSS NORTHERN AREAS WHERE RAIN SHOULD TAPER OFF AND CLOUDS MAY THIN A BIT LATER TODAY...WITH GENERALLY UPPER 50S TO LOWER 60S EXPECTED ACROSS HIGHER ELEVATIONS. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY NIGHT/... TONIGHT...THE BRIEF BREAK FROM RAINFALL ACROSS AT LEAST NORTHERN PORTIONS OF THE REGION SHOULD END BY LATE TONIGHT...AS ISENTROPIC LIFT INTENSIFIES ONCE AGAIN FROM SOUTH TO NORTH. THIS SHOULD ALLOW RAIN SHIELD TO EXPAND BACK TO THE N/NE...ESPECIALLY AFTER MIDNIGHT...WITH MOST AREAS RECEIVING LIGHT TO MODERATE RAIN BY DAYBREAK...ALONG WITH THE POSSIBILITY OF SOME EMBEDDED HEAVIER PERIODS OF RAIN. EXPECT MIN TEMPS TO FALL INTO THE 50S TO LOWER 60S IN MOST AREAS. WED-WED NT...MAIN THRUST OF ISENTROPIC LIFT SHOULD EXPAND N/NW ACROSS THE REGION DURING THE MORNING...BEFORE SLOWING PROGRESSION TO THE N/W DURING THE AFTERNOON. THIS SHOULD ALLOW FOR A BAND OF MOD-HVY RAIN TO LIFT N/W IN THE MORNING...POSSIBLY SLOWING DOWN AND/OR STALLING ACROSS PORTIONS OF THE WESTERN MOHAWK VALLEY AND ADIRONDACKS INTO WED NT. IT APPEARS THAT THIS REGION WILL BE UNDER THE GREATEST RISK FOR HEAVY RAIN DURING THIS TIME PERIOD...ALTHOUGH STILL CAN NOT COMPLETELY RULE OUT ADJACENT AREAS OF THE CATSKILLS AND SCHOHARIE VALLEY FOR SEVERAL INCHES OF RAINFALL. CONFIDENCE IS A BIT GREATER THAT S/E PORTIONS OF THE REGION SHOULD RECEIVE LESS RAINFALL DURING THIS TIME...ESP ACROSS THE MID HUDSON VALLEY REGION AND WESTERN NEW ENGLAND...AND SOUTHERN VT...WHERE BEST RAINFALL SHOULD BE LATE TONIGHT INTO WED MORNING...BEFORE BECOMING MORE INTERMITTENT AND SHOWERY WED AFTERNOON AND EVENING. EXPECT LITTLE DIURNAL RANGE IN TEMPS...WITH WED MAXES MAINLY IN THE LOWER/MID 60S WITHIN THE HUDSON RIVER VALLEY...AND 50S ACROSS THE NORTH COUNTRY. SLIGHTLY WARMER MAXES COULD OCCUR IN SOUTHERN AREAS SHOULD RAIN TAPER OFF. EXPECT WED NT MINS TO FALL INTO THE 50S/LOWER 60S. && .LONG TERM /THURSDAY THROUGH MONDAY/... THU-THU NT...IT APPEARS THAT BEST SURGE OF MOISTURE MAY IN FACT SHIFT S/W OF REGION DURING THIS TIME PERIOD AS MID LEVEL HEIGHTS RISE TO THE N/E. WILL TAPER POPS INTO CHC RANGE THU...AND SLIGHT CHC RANGE FOR THU NT. IT WILL BE HUMID...AND SLIGHTLY WARMER...WITH MAX TEMPS REACHING THE UPPER 60S TO MID 70S...AND OVERNIGHT MINS MAINLY IN THE 60S IN VALLEYS...AND 50S ACROSS HIGHER ELEVATIONS. FRI-SUN...IT APPEARS THAT KATIA SHOULD REMAIN WELL S/E OF REGION...WITH SUBSIDENCE PERSISTING ACROSS THE REGION. WILL KEEP CONDITIONS DRY DURING THIS TIME PERIOD...WITH TEMPS WARMING TO NEAR OR ABOVE SEASONAL LEVELS...WITH MAXES 75-80 IN VALLEYS...AND 70-75 ACROSS HIGHER ELEVATIONS...AND OVERNIGHT MINS MAINLY IN THE 50S WITHIN VALLEYS...AND 45-50 ACROSS HIGHER ELEVATIONS. SUN NT-MON...WILL KEEP SLIGHT CHC POPS...AS A COLD FRONT MAY APPROACH OR REACH THE REGION FROM THE W DURING THIS TIME. EXPECT NEAR SEASONABLE TEMPS...WITH GENERALLY MID 70S IN VALLEYS...AND 65-70 ACROSS HIGHER ELEVATIONS...AND OVERNIGHT MINS GENERALLY IN THE 50S...EXCEPT FOR 40S ACROSS THE NORTH COUNTRY. && .AVIATION /12Z TUESDAY THROUGH SATURDAY/... THE BACKEDGE OF THE RAIN SHIELD WAS MIGRATING SOUTHEAST ACROSS THE DACKS AND WESTERN MOHAWK VALLEY. EXTRAPOLATION WOULD PLACE AN END TO THE RAIN ACROSS KGFL TO KALB BETWEEN 13-15Z. HOWEVER...THIS RAIN SHOULD REMAIN IN PLACE ACROSS KPOU FOR MOST OF THE DAY. AS FOR FLIGHT CATEGORIES...CONDITIONS ARE EXPECTED TO IMPROVE TO VFR FOR KALB-KGFL FOR MOST OF TODAY /COULD NOT RULE OUT A BRIEF PERIOD OF LOWER CIGS TO RESULT IN MVFR/. KPOU IS EXPECTED TO REMAIN IN LOW END MVFR CATEGORY. THIS FRONT IS FORECAST TO COME BACK NORTH TONIGHT WITH DETERIORATING AVIATION CONDITIONS FROM SOUTH TO NORTH. EXPECTATIONS ARE FOR MORE IFR THRESHOLDS BEING SATISFIED. OUTLOOK... WED-THU NT...VFR/MVFR...PERIODS OF RA LIKELY. FRI-SAT...MAINLY VFR...SLIGHT CHC MVFR -SHRA. && .FIRE WEATHER... A FRONTAL BOUNDARY SOUTH OF THE REGION WILL DRIFT NORTHWARD TONIGHT AND WEDNESDAY...BRINGING OCCASIONAL RAIN...SOME HEAVY...TO THE REGION. THE RH WILL RISE TO NEAR 100 PERCENT AT NIGHT...AND FALL TO 60-80 PERCENT EACH AFTERNOON THROUGH WED. NORTH TO NORTHEAST WINDS WILL AVERAGE 5-15 MPH THROUGH TONIGHT...BECOMING NORTHEAST TO EAST AT 5-15 MPH WEDNESDAY. && .HYDROLOGY... WIDESPREAD MODERATE RAINFALL PERSISTED OVERNIGHT...WITH ESTIMATED RAINFALL AMOUNTS GENERALLY 0.5 TO 1.0 INCH...ALTHOUGH LOCALLY HIGHER AMOUNTS MAY HAVE FALLEN. THIS HAS LED TO SIGNIFICANT RISES ON SOME AREA RIVERS/STREAMS...ESPECIALLY WITHIN PORTIONS OF WESTERN NEW ENGLAND...AS WELL AS THE EASTERN CATSKILLS...WHERE SOME MINOR FLOODING IS POSSIBLE THROUGH THIS MORNING. IT APPEARS THAT THE RAIN SHOULD TAPER OFF IN INTENSITY THROUGH THIS MORNING...AND MAY EVEN END...OR AT LEAST BECOME INTERMITTENT LATER THIS MORNING INTO THE AFTERNOON AND EVENING HOURS ACROSS NORTHERN AND CENTRAL AREAS. SOUTHERN AREAS SHOULD STILL EXPERIENCE PERIODS OF RAIN THROUGH THE DAY...WITH ADDITIONAL QPF OF 0.10-0.30 POSSIBLE THROUGH EARLY TONIGHT. RAINFALL WILL INCREASE FROM SOUTH TO NORTH AGAIN LATE TONIGHT...WITH PERIODS OF RAIN EXPECTED WED-WED NT. IT CURRENTLY APPEARS THAT THE MOST PERSISTENT AND HEAVIEST RAINFALL SHOULD OCCUR ACROSS THE WESTERN ADIRONDACKS AND MOHAWK VALLEY WED THROUGH WED NT...WITH AT LEAST 1-3 INCHES OF RAIN POSSIBLE. RAINFALL SHOULD BE LESS FURTHER S AND E...GENERALLY REMAINING UNDER AN INCH...AND POSSIBLY UNDER ONE HALF INCH IN SOME AREAS. HOWEVER...WE WILL NEED TO WATCH THE EVOLUTION AND ORIENTATION OF THIS RAINFALL...AS ANY EASTWARD DISPLACEMENT FROM CURRENT THINKING COULD PLACE THE HEAVY RAINFALL BACK OVER THE FLOOD PRONE REGIONS OF THE EASTERN CATSKILLS AND SCHOHARIE VALLEY. A FLOOD WATCH WILL LIKELY BE ISSUED FOR PORTIONS OF THE REGION AT SOME POINT LATER TODAY. && .ALY WATCHES/WARNINGS/ADVISORIES... CT...NONE. NY...NONE. MA...NONE. VT...NONE. && SYNOPSIS...KL/GJM NEAR TERM...KL SHORT TERM...KL LONG TERM...KL AVIATION...BGM FIRE WEATHER...KL HYDROLOGY...KL/GJM
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ALBANY NY 650 AM EDT TUE SEP 6 2011 CTZ001-013-MAZ001-025-NYZ032-033-038>043-047>054-058>061-063>066- 082>084-VTZ013>015-071100- NORTHERN LITCHFIELD-SOUTHERN LITCHFIELD-NORTHERN BERKSHIRE- SOUTHERN BERKSHIRE-NORTHERN HERKIMER-HAMILTON-SOUTHERN HERKIMER- SOUTHERN FULTON-MONTGOMERY-NORTHERN SARATOGA-NORTHERN WARREN- NORTHERN WASHINGTON-SCHOHARIE-WESTERN SCHENECTADY- EASTERN SCHENECTADY-SOUTHERN SARATOGA-WESTERN ALBANY-EASTERN ALBANY- WESTERN RENSSELAER-EASTERN RENSSELAER-WESTERN GREENE-EASTERN GREENE- WESTERN COLUMBIA-EASTERN COLUMBIA-WESTERN ULSTER-EASTERN ULSTER- WESTERN DUTCHESS-EASTERN DUTCHESS-NORTHERN FULTON-SOUTHEAST WARREN- SOUTHERN WASHINGTON-BENNINGTON-WESTERN WINDHAM-EASTERN WINDHAM- 650 AM EDT TUE SEP 6 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWESTERN CONNECTICUT...WESTERN MASSACHUSETTS...EAST CENTRAL NEW YORK AND SOUTHERN VERMONT. .DAY ONE...TODAY AND TONIGHT. RAINFALL WILL INCREASE FROM SOUTH TO NORTH AGAIN LATE TONIGHT...WITH PERIODS OF RAIN EXPECTED WEDNESDAY INTO WEDNESDAY NIGHT. IT CURRENTLY APPEARS THAT THE MOST PERSISTENT AND HEAVIEST RAINFALL SHOULD OCCUR ACROSS THE WESTERN ADIRONDACKS AND MOHAWK VALLEY WEDNESDAY THROUGH WEDNESDAY NIGHT...WITH AT LEAST 1 TO 3 INCHES OF RAIN POSSIBLE BY WEDNESDAY NIGHT. RAINFALL SHOULD BE LESS FURTHER SOUTH AND EAST...GENERALLY REMAINING UNDER AN INCH...AND POSSIBLY UNDER ONE HALF INCH IN SOME AREAS. HOWEVER...WE WILL NEED TO WATCH THE EVOLUTION AND ORIENTATION OF THIS RAINFALL...AS ANY EASTWARD DISPLACEMENT FROM CURRENT THINKING COULD PLACE THE HEAVY RAINFALL BACK OVER THE FLOOD PRONE REGIONS OF THE EASTERN CATSKILLS AND SCHOHARIE VALLEY. ADDITIONAL RIVER RISES ARE LIKELY ACROSS THE REGION FROM THIS RAINFALL...AND FLOODING OF LOW LYING...POOR DRAINAGE AREAS AND SMALL STREAMS AND CREEKS WILL ALSO BE POSSIBLE. A FLOOD WATCH WILL LIKELY BE ISSUED FOR PORTIONS OF THE REGION AT SOME POINT LATER TODAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. PERIODS OF RAIN ARE EXPECTED WEDNESDAY INTO WEDNESDAY NIGHT. IT CURRENTLY APPEARS THAT THE MOST PERSISTENT AND HEAVIEST RAINFALL SHOULD OCCUR ACROSS THE WESTERN ADIRONDACKS AND MOHAWK VALLEY WEDNESDAY THROUGH WEDNESDAY NIGHT...WITH AT LEAST 1 TO 3 INCHES OF RAIN POSSIBLE BY WEDNESDAY NIGHT. RAINFALL SHOULD BE LESS FURTHER SOUTH AND EAST...GENERALLY REMAINING UNDER AN INCH...AND POSSIBLY UNDER ONE HALF INCH IN SOME AREAS. HOWEVER...WE WILL NEED TO WATCH THE EVOLUTION AND ORIENTATION OF THIS RAINFALL...AS ANY EASTWARD DISPLACEMENT FROM CURRENT THINKING COULD PLACE THE HEAVY RAINFALL BACK OVER THE FLOOD PRONE REGIONS OF THE EASTERN CATSKILLS AND SCHOHARIE VALLEY. ADDITIONAL RIVER RISES ARE LIKELY ACROSS THE REGION FROM THIS RAINFALL...AND FLOODING OF LOW LYING...POOR DRAINAGE AREAS AND SMALL STREAMS AND CREEKS WILL ALSO BE POSSIBLE. A FLOOD WATCH WILL LIKELY BE ISSUED FOR PORTIONS OF THE REGION AT SOME POINT LATER TODAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
The Albany radar (KENX), 52 km away, was scanning. The volume nearest the first event began at 11:25 UTC.
40 flood, 2 flash flood. Local standard time, as filed.
Route 4 in Stillwater was closed due to flooding between Route 32 and Gen Schuyler Lane.
Route 81 over the Catskill Creek near Route 145 and Route 145 between Travis Hill Road and Fox Creek Road in Preston-Potter Hollow were closed due to flooding.
Route 4 in Stillwater was closed due to flooding between Wrights Loops and River Road.
Minor flooding occurred on the Esopus Creek upstream of the Ashokan Reservoir. The Mount Temper/Cold Brook river gage located on the left bank at the downstream side of the bridge on Nissen Road in Coldbrook, 1.5 miles upstream from the Ashokan Reservoir, and 2.5 miles south of Mount Tremper exceeded its 11 foot flood stage at 3:44 am EST September 7th, it crested at 14.21 feet at 6:45 am (moderate flood stage is 15 feet), dropped below flood stage at 3:12 pm September 7th. It went back above flood stage at 5:57 am September 8th, crested just above flood stage at 11.79 feet at 7:45 am and dropped back below flood stage at 10:19 am September 8th.
Flooding occurred on the Schoharie Creek at Prattsville. The Prattsville river gage located on left bank 100 feet upstream from bridge on Route 23 in Prattsville, 0.2 miles upstream from Schoharie Reservoir, 0.2 miles downstream from Huntersfield Creek, and 1.6 miles downstream from Batavia Kill exceeded its 12 foot flood stage at 6:25 am EST September 7th, it crested at 13.71 feet at 10 am (moderate flood stage is 14 feet), and dropped below flood stage at 2:16 pm September 7th.
Flooding occurred along the Schoharie Creek. The Prattsville river gage in Greene County located on left bank 100 feet upstream from bridge on Route 23 in Prattsville, 0.2 miles upstream from Schoharie Reservoir, 0.2 miles downstream from Huntersfield Creek, and 1.6 miles downstream from Batavia Kill exceeded its 12 foot flood stage at 6:25 am EST September 7th, it crested at 13.71 feet at 10 am (moderate flood stage is 14 feet), and dropped below flood stage at 2:16 pm September 7th. The river gage located at Gilboa Dam on the Schoharie Reservoir exceeded its 1130.5 foot flood stage at 8:08 am EST September 7th, its 1131.5 foot moderate flood stage at 9:35 am, it crested at 1131.85 at 11 am and dropped below flood stage at 5:37 pm September 7th. The river gage located at Gilboa Bridge where the Schoharie Creek exits the Schoharie Reservoir exceeded its 20 foot flood stage at 9:15 am September 7th and dropped below flood stage at 2:26 pm September 7th. The Breakabeen river gage on the Schoharie Creek located on the left bank 100 feet downstream from bridge on Route 30, 0.9 miles north of Breakabeen, exceeded its 11 foot flood stage at 10:12 am September 7th, it crested at 11.90 feet at 1 pm, and dropped below flood stage at 12:48 am September 8th. The Burtonsville river gage on the Schoharie Creek located on the right bank 0.4 miles south of Burtonsville, 2.7 miles north of Esperance, exceeded its 6 foot flood stage at 11:58 am September 7th, its 8 foot moderate flood stage at 3:26 pm, it crested at 9.33 feet at 10:45 pm September 7th, and dropped below flood stage at 1:27 am September 9th.
Moderate flooding occurred on the Espous downstream from the Ashokan Reservoir. The Mount Marion river gage located on left bank at downstream side of bridge on Glasco Turnpike, 0.8 miles east of Mount Marion, and 1.6 miles downstream from Plattekill Creek exceeded its 20 foot flood stage at 6:35 am EST September 7th, its 22 foot moderate flood stage at 3:21 am September 8th, it crested at 23.53 feet at 11 am September 8th (major flood stage is 24 feet), and dropped below flood stage at 5:45 am September 10th.|The Ashokan Reservoir East gage exceeded its 589 foot flood stage at 12:50 pm September 7th, it crested at 589.56 feet at 3:10 pm September 8th, and dropped below flood stage at 8:59 am September 9th.
Route 443, Helderberg Trail, was closed at Fox Creek Bridge in West Berne due to flooding.|Route 156 between Route 443 and Pleasant Valley Road was flooded and suffered damage which resulted in the road being closed until Friday morning, September 9th.
Route 443 from Gallupville-Knox Road, County Route 24, to the Albany County line was closed due to flooding.
Route 5 in the City of Albany from Frost Place to Yardboro Avenue was closed due to flooding.
The Delaware Turnpike, Route 85/Route 443, in the Town of New Scotland and Route 443 just west of Route 85 in the Town of Berne were closed due to flooding.
Route 143 from Marshall Road to Javis Road South in Ravena was closed due to flooding.
Route 146 in the Town of Knox at the Albany Schoharie County line was closed due to flooding.
Route 146 in the Town of Knox at the Albany Schoharie County line was closed due to flooding.
Route 145 was closed due to flooding in Middleburgh.
Route 51 was closed due to flooding from First Street in the Village of Ilion south to Old Forge Road as the Steele Creek overflowed its banks.
Minor flooding occurred on the Rondout Creek at Rosendale. The Rosendale river gage located on the left bank 30 feet upstream from bridge on James Street in Rosendale and 3 miles upstream from Wallkill River exceeded its 18 foot flood stage at 10:08 am EST September 7th, it crested at 18.20 feet at 1 pm, and dropped below flood stage at 3:04 pm September 7th. It exceeded its flood stage again at 6:44 am September 8th, crested at 20.34 feet at 12:30 pm (moderate flood stage is 21 feet), and dropped below its flood stage at 1:20 am September 9th.
Route 85A, New Salem Road, in New Salem was closed due to flooding.
The Cobleskill Creek and tributaries flooded in and around Cobleskill. Major flooding occurred on the campus of the State University of New York at Cobleskill. Five dorms and some academic buildings were damage due to the flooding. Classes were cancelled as of 12:45 pm EST Wednesday, September 7th, and remained cancelled on Thursday and Friday. All Cobleskill-Richmondville Central Schools were closed on Wednesday and remained closed on Thursday. Students and staff were sheltered in four district buildings because roads were closed in the area and buses could not get through to bring students home. It was reported that as many as 1,000 students were sheltered once classes were cancelled. This number was down to about 100 by 5 pm EST with 8 students ending up spending the night. Water damage occurred to homes and businesses and the fairgrounds flooded. The following road closures were reported: Route 7 from Warnerville into Cobleskill, Route 7 from Burgon Drive to Forester Road, South Grand Street from Main Street to Mineral Springs Road, Elm Street from North Grand to Warnerville cut-off, and Route 145 from Settles Mountain Road from Lawyersville into Cobleskill.
Moderate flooding occurred on the Hoosic River at Eagle Bridge. The Eagle Bridge river gage located on the right bank 0.5 miles upstream from Case Brook, 1.2 miles downstream from Walloomsac River, and 1.2 miles southeast of Eagle Bridge exceeded its 11 foot flood stage at 11:41 pm EST September 7th, its 13 foot moderate flood stage at 2:48 pm, it crested at 14.05 feet at 6 pm, and dropped below flood stage at 5:05 pm September 8th.
Moderate flooding occurred on the Hoosic River at Eagle Bridge. The Eagle Bridge river gage located on the right bank 0.5 miles upstream from Case Brook, 1.2 miles downstream from Walloomsac River, and 1.2 miles southeast of Eagle Bridge exceeded its 11 foot flood stage at 11:41 pm EST September 7th, its 13 foot moderate flood stage at 2:48 pm, it crested at 14.05 feet at 6 pm, and dropped below flood stage at 5:05 pm September 8th.
Route 32 in the City of Albany was closed from Old South Pearl Street to Binghamton Street due to flooding.
Flooding was reported on Route 9J south of Route 150 in Castleton-on-Hudson.
Route 5 from Interstate 890 to the Montgomery County line was closed due to flooding.
Route 4 in Stillwater was closed due to flooding from Route 32 to River Road.
The Route 20 over the Schoharie Creek at the Schenectady Schoharie County line in Esperance was closed due to flooding.
The Route 20 over the Schoharie Creek at the Schenectady Schoharie County line in Esperance was closed due to flooding.
In the Village of Menands, Route 32 southbound had one lane closed at Ward Lane due to flooding.
Major flooding occurred on the Canajoharie Creek in Montgomery County. The Canajoharie river gage located on the right bank 10 feet upstream from the bridge on McEwan Road and 2.3 miles southwest of Canajoharie exceeded its 8 foot flood stage at 2:47 pm EST September 7th, its 9 foot moderate flood stage at 12:18 am September 8th, its 10 foot major flood stage at 3:24 am, it crested at a record 10.23 feet at 5:45 pm and dropped below flood stage at 3:22 pm September 8th.
Moderate flooding occurred on the Wappingers Creek. The Wappingers Falls river gage located on left bank 700 feet downstream from Red Oaks Mill dam, and 4.5 miles northeast of village of Wappingers Falls exceeded its 8 foot flood stage at 4 pm EST September 7th, its 10 foot moderate flood stage at 2:19 pm September 8th, it crested at 11.47 feet at 8:45 pm, and dropped below flood stage at 7:25 pm September 9th.
Route 168 in Mohawk was closed due to flooding from Route 28 to Rock Hill Road as the Fulmer Creek overflowed its banks. Sand bagging took place and some evacuations occurred.
Moderate flooding occurred on the West Canada Creek at Kast Bridge. The Kast Bridge river gage located on right bank 600 feet downstream from bridge on old State Highway 28 at Kast Bridge, 1.2 miles downstream from North Creek, 2.2 miles north of Herkimer exceeded its 6 foot flood stage at 6:45 pm September 7th, its 7 foot moderate flood stage at 8:20 pm, it crested at 7.33 feet at 11:45 pm, and dropped below flood stage at 5:41 am September 8th.
The Village of Middleville declared a state of emergency Wednesday evening, September 7th. Routes 28, 29 and 169 were all closed due to flooding.
Moderate flooding occurred on the Hudson River at Troy. The Troy river gage located about 1 mile north of Route 7 exceeded its 21.5 foot flood stage 7:56 pm EST September 7th, its 24 foot moderate flood stage at 3:19 pm September 8th, it crested at 24.20 feet at 6 am September 9th, and dropped below its flood stage 8:40 pm September 9th. At the level of 24 feet water reaches mobile homes along the river front on Lansingburgh.
Major flooding occurred on the Mohawk River at Little Falls and upstream at Utica. The Little Falls river gage located on left bank 1,800 feet downstream from Fivemile Dam, 2.0 miles upstream from East Canada Creek, and 4.5 miles southeast of city of Little Falls exceeded its 15 foot flood stage at 9:07 pm EST September 7th, its 17 foot moderate flood stage at 12:42 am September 8th, its 18 foot major flood stage at 3 am, it crested at 18.20 feet at 4:30 am, and dropped below flood stage at 4:08 pm September 8th. At a level of 16 feet water reaches roads in the Industrial Park and at 18.5 feet the Fonda Motor Speedway floods. The Utica river gage located near Lee Street West exceeded its 403 foot flood stage around midnight EST September 8th, its 405 foot moderate flood stage around 6 am, its 407 foot major flood stage around 12:30 pm, it crested at 408 feet around 9 pm September 8th, and it finally dropped below flood stage around 7:30 pm September 11th.
Flooding occurred along the Mohawk River resulting in the closure of the following roads: Route 5 from Palatine Bridge to Fort Johnson and Route 5S from Route 80 in Fort Plain to Route 30A in Fultonville. The following off-ramps for the New York State Thruway, Interstate 90, were closed during the day September 8th: Exit 27 (Amsterdam), Exit 28 (Fultonville-Fonda) and Exit 29 (Canajoharie-Sharon Springs). Canajoharie's Waterfront Park was submerged in flood waters. In Fonda, flood waters inundated the fairgrounds, homes along Park Street and the Mongomery County Department of Public Works. New York State Erie Canal Locks E-12 (Tribes Hill) and E-10 (Cransville) were damage beyond what happened as a result of Tropical Storm Irene. At Lock E-12, the lower approach wall was breached and undermined. At Lock E-10, the south end of dam was breached by the river. The Little Falls river gage located on left bank 1,800 feet downstream from Fivemile Dam, 2.0 miles upstream from East Canada Creek, and 4.5 miles southeast of city of Little Falls Herkimer County exceeded its 15 foot flood stage at 9:07 pm EST September 7th, its 17 foot moderate flood stage at 12:42 am September 8th, its 18 foot major flood stage at 3 am, it crested at 18.20 feet at 4:30 am, and dropped below flood stage at 4:08 pm September 8th.
Route 51 in West Winfield was closed due to flooding between Route 20 and Chepatchet Road.
Route 5S at Turner Street in Frankfort was closed due to flooding.
Flooding occurred along the Mohawk River. Route 5S was closed due to flooding between Rynex Corners Road and Crawford in Rotterdam. New York State Erie Canal Locks E-9 (Rotterdam Junction) and E-8 (Scotia) were damage beyond what happened as a result of Tropical Storm Irene. At Lock E-9, the north end of dam breached by the river and a large section Route 103 (Bridge Street) on the Glenville side of the lock collapsed. Two concrete Canal Corporation buildings near the lock were swept away. At Lock E-8, the north end of dam breached by the river.
Due to the expected flooding and the potential for debris dam at any of locks and bridges evacuations were ordered for the flood-prone areas of Rotterdam Junction, Glenville, Scotia, City of Schenectday and Niskayuna. It was reported that about 400 people who ignored the evacuation orders had to be rescued. The following bridges crossing the Mohawk River were closed between 12:45 pm to 4 pm EST Thursday, September 8th: Western Gateway Bridge (Route 5), Interstate 890 Bridge in Rotterdam Junction, Freemans Bridge in Schenectady, and Rexford Bridge (Route 146).
The river gage at Freeman's Bridge at Schenectady crested at 22.6 feet around 6 pm EST September 8th. The Cohoes river gage located on right bank at School Street powerplant in Cohoes, and 2.0 miles upstream from mouth exceeded its 20 foot flood stage at 9:44 am September 8th, it crested at 20.57 feet at 2:50 pm (moderate flood stage is 21 feet), and dropped below flood stage at 4:36 am September 9th.
Numerous roads were reported closed county-wide due to flooding as small streams overflowed their banks. The Pine Bush schools were closed due to the flooding. Moderate flooding occurred on the Wallkill River at Gardiner. The Gardiner river gage located on left bank 400 feet upstream from bridge on Route 44, 500 feet downstream from Shawangunk Kill, and 0.7 miles northwest of Gardiner exceeded its 13 foot flood stage around 5:30 am EST September 8th, its 16 foot moderate flood stage around 10:30 am, it crested at 17.67 feet around 4 pm, and dropped below flood stage around 3:30 am September 9th.
Numerous roads were reported closed county-wide due to flooding as small streams overflowed their banks. This included but was not limited to the following: Route 42 in Lexington from County Route 13A to the Ulster County line with two bridges over the West Kill damaged, Route 32 over the Kaaterskill Creek in Catskill and Route 23A over the Kaaterskill Creek in the Town of Hunter.
Route 30A in Johnstown between Route 29 and Route 67 and Route 67 from the Johnstown City line to Route 5 were closed due to flooding.
Route 67 from the Johnstown City line to Route 5 was closed due to flooding.
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, September 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: 350134, 350123, 350133, 350266, 350277, 350278, 350264, 350124, 350141, 350129, 350125, 350127, 350136, 350137, 350140, 350153, 350272, 350126, 367978, 350142, 350143, 350128, 350132, 350283, 350135, 350138, 350139, 350130, 350146, 350144, 350154, 350148, 350276, 350281, 350279, 350155, 350156, 350282, 350269, 350270, and more.