An area of low pressure formed near the South Carolina coast and moved northeast along the US Atlantic coast through October 27. An area of low pressure moved across parts of New York and Pennsylvania October 25 through the 26th. These two system consolidated into a strong Nor’easter October 26th producing heavy rainfall across parts of Central New York and northeast Pennsylvania (see animation below).
Maps above from the Weather Prediction Center's surface analysis archive.
Rainfall Map
Below are some of the reports used to create the map.
Public Information Statement National Weather Service Binghamton NY 1055 AM EDT Wed Oct 27 2021 ...PRECIPITATION REPORTS... Location Amount Time/Date Provider ...New York... ...Broome County... Lisle 3.00 in 1027 PM 10/26 CWOP Binghamton 2.79 in 1035 PM 10/26 NYSM Binghamton 2.71 in 1015 PM 10/26 CWOP Vestal 2.51 in 1016 PM 10/26 CWOP 1 SE Port Crane 2.50 in 0633 PM 10/26 Binghamton Airport 2.44 in 1022 PM 10/26 ASOS Belden 2.43 in 1035 PM 10/26 NYSM Endicott 2.42 in 1021 PM 10/26 CWOP Maine 2.39 in 1030 PM 10/26 CWOP Port Crane 2.33 in 0630 PM 10/26 Public Windsor 2.32 in 1015 PM 10/26 CWOP 1 SE Union Center 2.23 in 0800 PM 10/26 Trained Spotter Vestal Center VFD 2 2.18 in 1015 PM 10/26 CWOP Vestal 2.01 in 1015 PM 10/26 CWOP Binghamton 1.96 in 1015 PM 10/26 CWOP Binghamton 1.88 in 1016 PM 10/26 CWOP Vestal 1.87 in 1016 PM 10/26 CWOP Vestal 1.75 in 1015 PM 10/26 CWOP Vestal Ross Corners VFD3 1.64 in 1030 PM 10/26 CWOP Lisle 1.58 in 1020 PM 10/26 CWOP Vestal 1.52 in 1030 PM 10/26 CWOP Vestal 1.47 in 1015 PM 10/26 CWOP Johnson City 1.46 in 1026 PM 10/26 CWOP Vestal VFD4 1.40 in 1016 PM 10/26 CWOP ...Cayuga County... Scipio Center 2.43 in 1035 PM 10/26 NYSM Auburn 2.34 in 0435 PM 10/26 CO-OP Observer 1 ENE Venice Center 2.30 in 0630 PM 10/26 Cocorahs Venice Center 1.97 in 0650 PM 10/26 Trained Spotter Auburn 1.82 in 1028 PM 10/26 CWOP Auburn 1.57 in 1035 PM 10/26 AWS ...Chemung County... Elmira 1.93 in 1035 PM 10/26 NYSM Erin 1.80 in 1026 PM 10/26 CWOP Elmira Airport 1.20 in 1011 PM 10/26 ASOS ...Chenango County... Greene 2.00 in 1025 PM 10/26 CWOP Nineveh 1.90 in 1255 PM 10/26 Trained Spotter Greene 1.69 in 1021 PM 10/26 CWOP Sherburne 1.59 in 1035 PM 10/26 NYSM Norwich 1.42 in 1015 PM 10/26 CWOP Plymouth 1.13 in 1018 PM 10/26 CWOP Norwich 1.04 in 1035 PM 10/26 AWOS ...Cortland County... 0.8 NW Hunts Corners 2.70 in 1015 PM 10/26 COOP Cincinnatus 2.36 in 1035 PM 10/26 NYSM Cortland 1.79 in 1035 PM 10/26 AWS Marathon 1.78 in 1035 PM 10/26 AWS ...Delaware County... Roxbury 2.73 in 1035 PM 10/26 NYSM Deposit 2.68 in 1035 PM 10/26 NYSM Andes 2.24 in 1035 PM 10/26 NYSM Margaretville 2.21 in 1030 PM 10/26 CWOP Walton 2.15 in 1035 PM 10/26 NYSM Harpersfield 1.91 in 1035 PM 10/26 NYSM Roxbury 1.90 in 1027 PM 10/26 CWOP Masonville 1.89 in 0345 PM 10/26 Trained Spotter Afton 1.44 in 1028 PM 10/26 CWOP Franklin 1.44 in 1029 PM 10/26 CWOP 1.1 E Sidney Center 1.38 in 1015 PM 10/26 HADS ...Madison County... Chittenango 2.92 in 0600 PM 10/26 Trained Spotter 2 N Sullivan 2.21 in 1035 PM 10/26 AWS Morrisville 2.05 in 1035 PM 10/26 NYSM Morrisville 6 S 2.00 in 1000 PM 10/26 COOP Munnsville 1.99 in 1015 PM 10/26 CWOP Earlville 1.68 in 1025 PM 10/26 CWOP Oneida 1.41 in 1035 PM 10/26 AWS Brookfield 1.33 in 1035 PM 10/26 NYSM Cazenovia 1.25 in 0945 PM 10/26 HADS ...Oneida County... Boonville 0.2 NW 1.95 in 0600 PM 10/26 COCORAHS Camden 1.91 in 1035 PM 10/26 NYSM Rome 1.90 in 1015 PM 10/26 CWOP Westmoreland 1.74 in 1017 PM 10/26 CWOP Westmoreland 1.68 in 1035 PM 10/26 NYSM Griffiss Airfield 1.53 in 0953 PM 10/26 AWOS Otter Lake 1.35 in 1024 PM 10/26 CWOP Woodgate 1.31 in 1035 PM 10/26 NYSM ...Onondaga County... Tully 2.89 in 1027 PM 10/26 CWOP Marcellus 2.73 in 1030 PM 10/26 CWOP Apulia 2.64 in 0600 PM 10/26 Public 1 SSE Euclid 2.64 in 0700 PM 10/26 Trained Spotter Cicero 2.60 in 1030 PM 10/26 CWOP Skaneateles 2.58 in 1015 PM 10/26 CWOP Jordan 2.53 in 1035 PM 10/26 NYSM Tully 2.44 in 1035 PM 10/26 NYSM Manlius 2.40 in 1010 PM 10/26 CWOP Fayetteville 2.38 in 1035 PM 10/26 NYSM Clay 2.37 in 1028 PM 10/26 CWOP 1 S Bennetts Corners 2.33 in 1030 PM 10/26 AWS Minoa 2.25 in 1026 PM 10/26 CWOP Phoenix 2.24 in 1015 PM 10/26 CWOP Fairmount 2.18 in 1029 PM 10/26 CWOP Jamesville 2.17 in 1030 PM 10/26 CWOP Marcellus 2.13 in 1023 PM 10/26 CWOP Camillus 2.06 in 1030 PM 10/26 CWOP Syracuse Airport 2.04 in 0954 PM 10/26 ASOS Camillus 2.01 in 1016 PM 10/26 CWOP Tully 1.89 in 1020 PM 10/26 CWOP 1 WNW Marcellus 1.78 in 1030 PM 10/26 AWS Apulia Station 1.76 in 1021 PM 10/26 CWOP Clay 1.33 in 1028 PM 10/26 CWOP ...Otsego County... Laurens 1.68 in 1035 PM 10/26 NYSM Springfield 1.55 in 1035 PM 10/26 NYSM Mount Vision 1.4 SW 1.42 in 0400 PM 10/26 COCORAHS 1 NNE Oneonta 1.28 in 1030 PM 10/26 AWS Cooperstown 1.04 in 1153 AM 10/26 CWOP Cooperstown 1.02 in 1016 PM 10/26 CWOP 0.9 NE Hartwick 0.90 in 0930 PM 10/26 HADS 1.6 SE Bridgewater 0.85 in 0930 PM 10/26 HADS 1.6 E South Edmeston 0.69 in 1015 PM 10/26 HADS ...Schuyler County... Catharine 3.10 in 0645 PM 10/26 Trained Spotter Bolter Creek 2.69 in 1012 PM 10/26 RAWS Gabriels Junction 2.51 in 1025 PM 10/26 CWOP Tyrone 2.34 in 1035 PM 10/26 NYSM Mecklenburg 2.28 in 0416 PM 10/26 Cocorahs Arnot Lodge (RP) (RP) (RP 2.20 in 1000 PM 10/26 COOP Burdett 2.06 in 1035 PM 10/26 NYSM Odessa 1.41 in 1030 PM 10/26 AWS ...Seneca County... 2 E Lodi 3.00 in 0603 PM 10/26 Trained Spotter Waterloo 2.57 in 1035 PM 10/26 NYSM Romulus 2.16 in 1034 PM 10/26 AWS Seneca Falls 1.60 in 1028 PM 10/26 CWOP 1.3 S Hayts Corners 1.56 in 0945 PM 10/26 HADS 2.2 E Tyre 0.97 in 0945 PM 10/26 HADS ...Steuben County... Hornell 2.32 in 0845 AM 10/27 Trained Spotter South Corning 2.10 in 0715 PM 10/26 Trained Spotter Bath 1.98 in 0844 AM 10/27 Trained Spotter Cohocton 1.76 in 1035 PM 10/26 NYSM Sonora 1.58 in 0845 AM 10/27 Trained Spotter 3.3 N Prattsburg 1.36 in 1035 PM 10/26 ALERT Hartsville 1.24 in 1035 PM 10/26 NYSM Addison 1.22 in 1035 PM 10/26 NYSM Branchport 1.17 in 1016 PM 10/26 CWOP Avoca 1.05 in 1035 PM 10/26 AWS 2.8 NW Prattsburg 1.04 in 1000 PM 10/26 ALERT 2 W Hornell 0.73 in 0846 AM 10/27 Trained Spotter ...Sullivan County... Loch Sheldrake 4.70 in 0640 PM 10/26 Public North Branch 4.24 in 1035 PM 10/26 NYSM Woodbourne 4.11 in 1035 PM 10/26 NYSM Roscoe 2 S 4.10 in 0815 PM 10/26 COOP Eldred 3.99 in 1035 PM 10/26 NYSM Livingston Manor 3.52 in 1030 PM 10/26 CWOP Jeffersonville 3.43 in 1035 PM 10/26 AWS 2 SW Claryville 3.40 in 1015 PM 10/26 COOP Monticello 3.13 in 1027 PM 10/26 CWOP Grahamsville 3.05 in 1028 PM 10/26 CWOP Sullivan County Airport 2.89 in 0956 PM 10/26 AWOS Liberty 2.18 in 0821 AM 10/27 Trained Spotter Jeffersonville 2.01 in 1015 PM 10/26 CWOP ...Tioga County... Berkshire 2.37 in 1035 PM 10/26 NYSM 1.7 N Newark Valley 2.20 in 0815 PM 10/26 COOP 1 W Tioga Terrace 2.20 in 1030 PM 10/26 AWS Endicott 2.10 in 1029 PM 10/26 CWOP Owego 1.93 in 1035 PM 10/26 NYSM Apalachin 1.82 in 1028 PM 10/26 CWOP Barton 1.80 in 0315 PM 10/26 Public Town Of Owego 1.53 in 1022 PM 10/26 CWOP ...Tompkins County... CORNELL HTRC ITHACA 13 E 3.79 in 1005 PM 10/26 HADS Lansing 2.90 in 0819 AM 10/27 NWS Employee Dryden 2.88 in 1025 PM 10/26 CWOP 1 SE Mecklenburg 2.71 in 0715 PM 10/26 Cocorahs Groton 2.62 in 1035 PM 10/26 NYSM 2 NE Dryden 2.58 in 1030 PM 10/26 AWS Dryden 2.57 in 1025 PM 10/26 CWOP Ithaca 2.19 in 1025 PM 10/26 CWOP West Danby 2.17 in 1025 PM 10/26 CWOP 1 NE Freeville 2.16 in 0615 PM 10/26 CO-OP Observer Ithaca 1.87 in 1025 PM 10/26 CWOP Ithaca 1.02 in 0107 PM 10/26 CWOP Forest Home 1.00 in 1050 AM 10/26 Trained Spotter ...Yates County... Dundee 2.07 in 1015 PM 10/26 CWOP Penn Yan 1.83 in 1035 PM 10/26 NYSM Penn Yan 1.70 in 0953 PM 10/26 ASOS Keuka Park 1.05 in 1015 PM 10/26 CWOP ...Pennsylvania... ...Bradford County... Ridgebury 1.73 in 1015 PM 10/26 CWOP Allis Hollow 1.34 in 1030 PM 10/26 CWOP Roaring Creek 1.22 in 0949 PM 10/26 RAWS 1 SSE Rome 0.85 in 1030 PM 10/26 AWS ...Lackawanna County... Vandling 5.89 in 1030 PM 10/26 CWOP Richmondale 3.31 in 1029 PM 10/26 CWOP Richmondale 2.71 in 0415 PM 10/26 Trained Spotter 1 S Springbrook Corner 2.31 in 0753 AM 10/27 Trained Spotter Archbald 2.09 in 1030 PM 10/26 CWOP Jermyn 2.00 in 1029 PM 10/26 CWOP Thornhurst 1.98 in 0948 PM 10/26 RAWS Thornhurst 1.82 in 1030 PM 10/26 CWOP Archbald 1.78 in 1028 PM 10/26 CWOP Moosic 1.74 in 1029 PM 10/26 CWOP Old Forge 1.52 in 1030 PM 10/26 AWS 1.0 S Mayfield 1.47 in 1000 PM 10/26 HADS ...Luzerne County... 1 NNW West Pittston 1.75 in 0420 PM 10/26 Wilkes-Barre/Scranton Airpor 1.66 in 1016 PM 10/26 ASOS Ashley 1.50 in 0950 PM 10/26 RAWS Bear Creek Township 1.46 in 1026 PM 10/26 CWOP Dallas 1.45 in 1035 PM 10/26 AWS Glen Summit 1.41 in 1035 PM 10/26 AWS Hanover Township 1.29 in 1028 PM 10/26 CWOP Front Royal 1.18 in 1026 PM 10/26 CWOP West Pittston 1.10 in 1035 PM 10/26 AWS Nescopeck Pass 1.06 in 1025 PM 10/26 CWOP Shickshinny 0.97 in 1028 PM 10/26 CWOP 1 NW Preston 0.91 in 1035 PM 10/26 AWS Hanover Township 0.90 in 1029 PM 10/26 CWOP Glen Lyon 0.80 in 1030 PM 10/26 CWOP ...Pike County... Shohola 4.64 in 0144 PM 10/26 Broadcast Media Loch Lomond 4.15 in 0844 PM 10/26 RAWS 1 ENE Forest Park 3.85 in 1010 AM 10/26 Public Camp William Penn 3.56 in 0950 PM 10/26 RAWS 2 NE Kimbles 3.52 in 1035 PM 10/26 AWS 2 NNW Dingmans Ferry 3.03 in 1037 PM 10/26 AWS 3.9 NE Panther (SNOTEL) 2.90 in 1010 PM 10/26 MESOWEST Hawley 2.76 in 1015 PM 10/26 CWOP Ft Myers 2.47 in 1016 PM 10/26 CWOP ...Susquehanna County... New Milford 2.71 in 1027 PM 10/26 CWOP Forest City 2.60 in 0550 PM 10/26 Public 1 NNE Montrose 1.94 in 0400 PM 10/26 Cocorahs Forest City 1.65 in 0206 PM 10/26 AWS ...Wayne County... Beach Lake 6.50 in 0600 AM 10/27 Trained Spotter 2 S Abrahamsville 3.30 in 1030 PM 10/26 AWS 1 NE Beach Lake 3.25 in 1130 AM 10/26 Cocorahs 1.6 W Pleasant Mount 3.00 in 0320 PM 10/26 COOP Hawley 2.85 in 0105 PM 10/26 Trained Spotter Gouldsboro 2.55 in 1020 PM 10/26 CWOP ...Wyoming County... Falls 1.58 in 1030 PM 10/26 CWOP Forkston 1.14 in 1030 PM 10/26 CWOP Tunkhannock 1.11 in 1016 PM 10/26 CWOP Noxen 0.79 in 1016 PM 10/26 CWOP Factoryville 0.67 in 1016 PM 10/26 CWOP
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