Overview
Confirmed EF-1 Tornado Atlantic Beach, NY
Radar Loop of Tornadic Thunderstorm Over Atlantic Beach, NY
Base Reflectivity (BR, left) and Base Velocity (BV, right)Animation from 6:36PM - 6:55PM EDT. Data from TJFK Terminal Doppler Weather Radar (TDWR) radar displayed courtesy of Gibson Ridge Analyst.
Radar Summary
Click here for an interactive version of this loop. Radar loop courtesy of the Iowa Environmental Mesonet, which runs from 2:00 PM EDT Thursday, August 20 through 6:00 AM EDT Friday, August 21. The large red box represents a tornado watch, large yellow box represent severe thunderstorm watches, red polygons represent tornado warnings, yellow polygons represent severe thunderstorm warnings, green polygons represent flash flood warnings, and blue polygons represent Special Marine Warnings
Observed Rainfall Analysis
Rainfall Reports Public Information Statement
(The link above is courtesy of the Iowa State University State Mesonet (IEM) National Weather Service Text Product Archive)
Rainfall Reports By State
| Connecticut |
Location Amount Time/Date Provider ...Fairfield County... STAMFORD 2.48 in 0600 AM 08/21 CWOP Greenwich 2.38 in 0610 AM 08/21 CWOP Norwalk 2.15 in 0315 AM 08/21 CWOP NEWTOWN 2.11 in 0610 AM 08/21 CWOP Danbury 2.07 in 0600 AM 08/21 CWOP Shelton 2.07 in 0610 AM 08/21 AWS Stratford 3.7 N 2.02 in 0700 AM 08/21 COCORAHS Westport 1.99 in 0600 AM 08/21 CWOP Danbury 1.92 in 0603 AM 08/21 CWOP 1 N Stamford 1.91 in 0610 AM 08/21 AWS Brookfield 1.91 in 0700 AM 08/21 COCORAHS Stamford 1.0 S 1.90 in 0700 AM 08/21 COCORAHS Darien 3.6 N 1.89 in 0715 AM 08/21 COCORAHS Darien 1.88 in 0700 AM 08/21 COCORAHS Norwalk 1.85 in 0700 AM 08/21 COCORAHS New Canaan 1.81 in 0800 AM 08/21 COCORAHS Stratford 1.79 in 0600 AM 08/21 COCORAHS Shelton 1.79 in 0700 AM 08/21 COCORAHS Shelton 1.3 W 1.78 in 0600 AM 08/21 COCORAHS Stratford 1.78 in 0600 AM 08/21 COCORAHS Ridgefield 1.77 in 0613 AM 08/21 AWS 2 E Greenwich 1.74 in 0615 AM 08/21 AWS Bethel 1.68 in 0700 AM 08/21 COCORAHS Fairfield 1.65 in 0605 AM 08/21 CWOP Fairfield 1.58 in 0700 AM 08/21 COCORAHS SHELTON 1.54 in 0608 AM 08/21 CWOP Ridgefield 2.4 NNE 1.52 in 0700 AM 08/21 COCORAHS REDDING 1.51 in 0606 AM 08/21 CWOP Redding Ridge 1.50 in 0600 AM 08/21 CWOP Newtown 5.3 S 1.48 in 0700 AM 08/21 COCORAHS Sandy Hook 1.47 in 0800 AM 08/21 COCORAHS Weston 1.46 in 0615 AM 08/21 AWS Bethel 4.5 SSE 1.42 in 0700 AM 08/21 COCORAHS Stamford 1.34 in 0614 AM 08/21 AWS 3 N New Canaan 1.29 in 0615 AM 08/21 AWS Bridgeport Airport 1.25 in 0852 AM 08/21 ASOS NEW CANAAN 1.12 in 0122 AM 08/21 CWOP Redding 1.07 in 0605 AM 08/21 CWOP ...Middlesex County... Middlefield 1.4 W 1.73 in 0600 AM 08/21 COCORAHS Saybrook Manor 1.55 in 0614 AM 08/21 AWS Clinton 1.42 in 0610 AM 08/21 AWS Westbrook 1.23 in 0600 AM 08/21 CWOP Cromwell 2.6 N 1.19 in 0605 AM 08/21 COCORAHS Old Saybrook 2.9 NNE 1.14 in 0722 AM 08/21 COCORAHS Higganum 1.10 in 0800 AM 08/21 COCORAHS Moodus 0.7 SSW 0.99 in 0700 AM 08/21 COCORAHS Durham 0.89 in 0610 AM 08/21 CWOP 3.5 NW Durham 0.71 in 0800 AM 08/21 HADS 3.3 N Moodus 0.55 in 0815 AM 08/21 HADS MOODUS 0.50 in 0607 AM 08/21 CWOP ...New Haven County... BRANFORD 3.03 in 0605 AM 08/21 CWOP Waterbury 2.73 in 0700 AM 08/21 COCORAHS ORANGE 2.18 in 0608 AM 08/21 CWOP Milford 2.13 in 0605 AM 08/21 CWOP Northford 2.05 in 0700 AM 08/21 COCORAHS New Haven 1.99 in 0615 AM 08/21 AWS Hamden 1.95 in 0730 AM 08/21 COCORAHS PROSPECT 1.85 in 0609 AM 08/21 CWOP WALLINGFORD 1.82 in 0609 AM 08/21 CWOP North Branford 1.1 ENE 1.80 in 0700 AM 08/21 COCORAHS NORTH PORT 1.79 in 0600 AM 08/21 CWOP Meriden Airport 1.75 in 0553 AM 08/21 ASOS 1.9 NW Naugatuck 1.65 in 0830 AM 08/21 HADS Prospect 1.62 in 0700 AM 08/21 COCORAHS Wallingford 1.50 in 0601 AM 08/21 CWOP Wallingford 1.48 in 0700 AM 08/21 COCORAHS Hamden 1.46 in 0606 AM 08/21 CWOP Wallingford 3.1 N 1.45 in 0700 AM 08/21 COCORAHS Oxford 1.40 in 0603 AM 08/21 CWOP New Haven Airport 1.39 in 0853 AM 08/21 ASOS Madison 1.7 NE 1.29 in 0830 AM 08/21 COCORAHS Waterbury Airport 1.27 in 0556 AM 08/21 AWOS WOODBRIDGE 1.24 in 0610 AM 08/21 CWOP Seymour 1.22 in 0605 AM 08/21 CWOP Guilford 1.22 in 0700 AM 08/21 COOP Bethany 1.21 in 0605 AM 08/21 CWOP Madison Center 1.3 N 1.19 in 0700 AM 08/21 COCORAHS WALLINGFORD 1.14 in 0605 AM 08/21 CWOP Branford 1.13 in 0600 AM 08/21 CWOP Outer Island, Branford 0.98 in 0615 AM 08/21 AWS Stony Creek 0.72 in 0610 AM 08/21 CWOP ...New London County... Oakdale 1.92 in 0700 AM 08/21 COCORAHS Old Lyme 1.61 in 0652 AM 08/21 COCORAHS New London 1.50 in 0600 AM 08/21 CWOP Waterford 1.46 in 0700 AM 08/21 COCORAHS Groton 1.45 in 0700 AM 08/21 COCORAHS Waterford 2.3 S 1.40 in 0803 AM 08/21 COCORAHS Waterford 1.1 E 1.37 in 0800 AM 08/21 COCORAHS Norwich 5.2 SE 1.36 in 0700 AM 08/21 COCORAHS Preston 1.30 in 0700 AM 08/21 COCORAHS East Lyme 1.27 in 0600 AM 08/21 COCORAHS SALEM 1.22 in 0600 AM 08/21 CWOP GROTON 1.16 in 0600 AM 08/21 CWOP Pawcatuck 1.12 in 0610 AM 08/21 CWOP Ledyard 0.5 NE 1.12 in 0700 AM 08/21 COCORAHS Groton Airport 1.05 in 0556 AM 08/21 ASOS Groton 1.04 in 0606 AM 08/21 CWOP Stonington 1.04 in 0700 AM 08/21 COCORAHS Pawcatuck 1.01 in 0600 AM 08/21 COCORAHS Lyme 1.01 in 0600 AM 08/21 CWOP Colchester 0.6 ENE 0.82 in 0600 AM 08/21 COCORAHS Norwich 0.81 in 0700 AM 08/21 COOP Griswold 0.78 in 0730 AM 08/21 COCORAHS Lisbon 0.75 in 0610 AM 08/21 CWOP 3.1 NW Hopkinton 0.68 in 0845 AM 08/21 HADS |
| New Jersey |
Location Amount Time/Date Provider ...Bergen County... Hackensack 1.3 N 2.85 in 0700 AM 08/21 COCORAHS 0.6 W Oakland 2.79 in 0800 AM 08/21 HADS New Milford 2.78 in 0610 AM 08/21 AWS RIVER EDGE 2.71 in 0610 AM 08/21 CWOP Hasbrouck Heights 0.9 SW 2.60 in 0700 AM 08/21 COCORAHS Tenafly 2.60 in 0730 AM 08/21 COCORAHS Tenafly 2.49 in 0605 AM 08/21 CWOP Cresskill 2.42 in 0614 AM 08/21 AWS Lyndhurst Twp 1.6 NW 2.38 in 0700 AM 08/21 COCORAHS River Edge 1.1 N 2.37 in 0700 AM 08/21 COCORAHS River Edge 0.7 SSW 2.36 in 0720 AM 08/21 COCORAHS Bergenfield 2.29 in 0600 AM 08/21 CWOP River Vale Twp 1.5 S 2.26 in 0745 AM 08/21 COCORAHS Paramus 2.24 in 0614 AM 08/21 AWS Teterboro Airport 2.23 in 0551 AM 08/21 ASOS Lyndhurst 2.20 in 0615 AM 08/21 AWS Bogota 2.17 in 0613 AM 08/21 AWS Lodi 2.16 in 0845 AM 08/21 IFLOWS Fair Lawn 2.10 in 0830 AM 08/21 COCORAHS Fair Lawn 2.07 in 0546 AM 08/21 COCORAHS North Arlington 1.97 in 0615 AM 08/21 AWS River Edge 0.4 NNE 1.92 in 0700 AM 08/21 COCORAHS Oakland 1.84 in 0610 AM 08/21 CWOP Leonia 1.83 in 0615 AM 08/21 AWS Oakland 1.79 in 0800 AM 08/21 COCORAHS Emerson 1.76 in 0553 AM 08/21 CWOP Mahwah 1.71 in 0615 AM 08/21 AWS 1 SSE Franklin Lakes 1.34 in 0845 AM 08/21 IFLOWS Hasbrouck Heights 0.93 in 0609 AM 08/21 CWOP ...Essex County... Nutley Twp 0.4 SE 2.45 in 0645 AM 08/21 COCORAHS Maplewood 2.43 in 0700 AM 08/21 COCORAHS Maplewood Twp 1.0 ESE 2.29 in 0700 AM 08/21 COCORAHS 1 W Newark 2.27 in 0610 AM 08/21 AWS West Orange Twp 0.6 WNW 2.26 in 0700 AM 08/21 COCORAHS 2 S Kearny 2.19 in 0551 AM 08/21 AWS Millburn 2.12 in 0615 AM 08/21 AWS West Caldwell 2.11 in 0610 AM 08/21 CWOP Montclair 2.08 in 0615 AM 08/21 AWS 0.6 SW Caldwell 2.08 in 0845 AM 08/21 IFLOWS West Orange 2.05 in 0601 AM 08/21 CWOP WEST CALDWELL 2.04 in 0605 AM 08/21 CWOP Caldwell 1.71 in 0853 AM 08/21 ASOS 1.6 W Millburn 1.56 in 0815 AM 08/21 HADS Orange Reservoir 1.28 in 0600 AM 08/21 IFLOWS 6 NW Hiram 1.12 in 0610 AM 08/21 AWS ...Hudson County... Hoboken 2.51 in 0607 AM 08/21 CWOP KEARNY 2.49 in 0605 AM 08/21 CWOP Harrison 2.46 in 0700 AM 08/21 COOP Secaucus 2.10 in 0615 AM 08/21 AWS Kearny 1.94 in 0605 AM 08/21 CWOP ...Passaic County... Passaic 3.17 in 0600 AM 08/21 CWOP 0.8 E West Paterson 2.37 in 0845 AM 08/21 HADS Little Falls 2.31 in 0600 AM 08/21 HADS Little Falls 2.26 in 0800 AM 08/21 COCORAHS 1 NNE North Caldwell 2.20 in 0614 AM 08/21 AWS Clifton 2.17 in 0615 AM 08/21 AWS WAYNE 2.15 in 0609 AM 08/21 CWOP West Milford 2.02 in 0700 AM 08/21 COCORAHS Hawthorne 1.95 in 0700 AM 08/21 COCORAHS CLIFTON 1.87 in 0609 AM 08/21 CWOP Wayne 1.86 in 0700 AM 08/21 COCORAHS 0.9 S Wayne 1.80 in 0845 AM 08/21 IFLOWS Charlottesburg Reservoir 1.76 in 0845 AM 08/21 COOP Wayne 1.75 in 0600 AM 08/21 CWOP Hawthorne 1.73 in 0610 AM 08/21 CWOP Ringwood 1.61 in 0810 AM 08/21 RAWS Pompton Lakes 1.1 S 1.60 in 0700 AM 08/21 COCORAHS 1.5 SW Ringwood 1.52 in 0845 AM 08/21 IFLOWS North Haledon 1.31 in 0610 AM 08/21 CWOP 2.1 E Ringwood 1.20 in 0845 AM 08/21 IFLOWS 2 ESE Barry Lakes 1.10 in 0615 AM 08/21 AWS 0.8 SE Pompton Lakes 0.92 in 0530 AM 08/21 HADS ...Union County... Mountainside 2.67 in 0830 AM 08/21 IFLOWS 1 NW Fanwood 2.54 in 0700 AM 08/21 COCORAHS Union 2.48 in 0600 AM 08/21 CWOP New Providence 2.48 in 0730 AM 08/21 COCORAHS Springfield 2.35 in 0800 AM 08/21 COCORAHS Cranford 2.30 in 0600 AM 08/21 COCORAHS Westfield 2.28 in 0630 AM 08/21 COCORAHS Clark 2.25 in 0745 AM 08/21 COCORAHS Cranford Twp 1.1 ESE 2.21 in 0700 AM 08/21 COCORAHS Bayside 2.19 in 0610 AM 08/21 CWOP Newark Airport 1.93 in 0851 AM 08/21 ASOS Westfield 0.8 WSW 1.83 in 0700 AM 08/21 COCORAHS |
| New York |
Location Amount Time/Date Provider ...Bronx County... 1 NE Harlem 2.56 in 0615 AM 08/21 AWS Fordham 2.49 in 0610 AM 08/21 NYSM ...Kings County... Prospect Park 2.70 in 0610 AM 08/21 AWS Brooklyn 2.1 WNW 2.52 in 0700 AM 08/21 COCORAHS South Slope 2.36 in 0605 AM 08/21 CWOP Dyker Heights 2.17 in 0610 AM 08/21 CWOP BROOKLYN 2.10 in 0606 AM 08/21 CWOP Brooklyn College 1.97 in 0610 AM 08/21 NYSM Brooklyn 1.76 in 0605 AM 08/21 CWOP Sheepshead Bay 1.69 in 0600 AM 08/21 CWOP ...Nassau County... Seaford 0.4 SE 3.90 in 0700 AM 08/21 COCORAHS Massapequa Park 3.85 in 0600 AM 08/21 CWOP SYOSSET 3.84 in 0608 AM 08/21 CWOP NORTH MASSAPEQUA 3.66 in 0603 AM 08/21 CWOP PORT WASHINGTON 3.62 in 0605 AM 08/21 CWOP Massapequa 1.1 SE 3.52 in 0700 AM 08/21 COCORAHS LONG BEACH 3.30 in 0607 AM 08/21 CWOP Bellmore 3.29 in 0700 AM 08/21 COCORAHS Wantagh 3.28 in 0610 AM 08/21 NYSM Massapequa Park 3.23 in 0700 AM 08/21 COCORAHS Levittown 3.17 in 0600 AM 08/21 CWOP MASSAPEQUA 3.12 in 0608 AM 08/21 CWOP Herricks 2.95 in 0700 AM 08/21 COCORAHS Hicksville 1.4 SSE 2.95 in 0700 AM 08/21 COCORAHS Bethpage 2.91 in 0613 AM 08/21 AWS 1 N Merrick 2.90 in 0610 AM 08/21 AWS Syosset 2.87 in 0814 AM 08/21 COOP Bellmore 2.82 in 0606 AM 08/21 CWOP Valley Stream 2.80 in 0606 AM 08/21 CWOP Oyster Bay 2.79 in 0600 AM 08/21 CWOP Hicksville 2.72 in 0609 AM 08/21 CWOP Muttontown 2.69 in 0605 AM 08/21 CWOP Levittown 2.69 in 0610 AM 08/21 AWS OLD WESTBURY 2.65 in 0600 AM 08/21 CWOP East Hills 2.57 in 0615 AM 08/21 AWS Mineola 2.39 in 0615 AM 08/21 AWS Port Washington 0.8 N 2.32 in 0724 AM 08/21 COCORAHS Merrick 1.96 in 0605 AM 08/21 CWOP East Rockaway 1.94 in 0609 AM 08/21 CWOP Port Washington 1.75 in 0615 AM 08/21 AWS Freeport 1.66 in 0615 AM 08/21 AWS 1 ESE Long Beach 1.46 in 0610 AM 08/21 AWS ...New York (Manhattan) County... Central Park 2.87 in 0851 AM 08/21 ASOS Midtown Manhattan 2.58 in 0610 AM 08/21 NYSM NEW YORK 2.55 in 0600 AM 08/21 CWOP Battery Park 2.34 in 0614 AM 08/21 AWS Washington Heights 1.44 in 0610 AM 08/21 AWS ...Orange County... US Military Academy 1.93 in 0355 AM 08/21 RAWS CORNWALL ON HUDSON 1.67 in 0607 AM 08/21 CWOP Warwick 1.65 in 0700 AM 08/21 COCORAHS Greenwood Lake 1.65 in 0800 AM 08/21 COCORAHS 2.6 NW Tuxedo Park 1.64 in 0845 AM 08/21 HADS Harriman 1.53 in 0615 AM 08/21 AWS Warwick 3.9 W 1.49 in 0600 AM 08/21 COCORAHS Tuxedo Park 1.48 in 0615 AM 08/21 AWS Newburgh 1.39 in 0551 AM 08/21 CWOP Monroe 0.8 N 1.39 in 0800 AM 08/21 COCORAHS NEW WINDSOR 1.35 in 0608 AM 08/21 CWOP 4 SSE Middletown 1.25 in 0610 AM 08/21 AWS Vails Gate 1.23 in 0606 AM 08/21 CWOP Otisville 1.18 in 0610 AM 08/21 NYSM Montgomery 1.14 in 0605 AM 08/21 CWOP Chester 1.04 in 0610 AM 08/21 CWOP Port Jervis 0.91 in 0630 AM 08/21 COCORAHS Walden 0.86 in 0606 AM 08/21 CWOP 0.8 N Port Jervis 0.84 in 0700 AM 08/21 COOP Washingtonville 0.78 in 0610 AM 08/21 CWOP ...Putnam County... Nelsonville 0.3 S 2.40 in 0700 AM 08/21 COCORAHS Brewster 2.37 in 0610 AM 08/21 NYSM Lake Carmel 2.01 in 0609 AM 08/21 CWOP Lake Carmel 0.7 NE 1.94 in 0700 AM 08/21 COCORAHS North Highland 1.91 in 0700 AM 08/21 COCORAHS Cold Spring 1.73 in 0600 AM 08/21 CWOP ...Queens County... OZONE PARK 2.98 in 0606 AM 08/21 CWOP Bellerose 2.94 in 0601 AM 08/21 CWOP Little Neck 0.3 SE 2.86 in 0530 AM 08/21 COCORAHS NYC/La Guardia 2.86 in 0851 AM 08/21 ASOS Kew Garden Hills 2.81 in 0610 AM 08/21 NYSM Howard Beach 2.80 in 0700 AM 08/21 COCORAHS LONG ISLAND CITY 2.07 in 0606 AM 08/21 CWOP MIDDLE VILLAGE 2.01 in 0610 AM 08/21 CWOP NYC/JFK Airport 2.01 in 0851 AM 08/21 ASOS Beechhurst 1.71 in 0610 AM 08/21 CWOP ...Richmond County... College of Staten Island 2.03 in 0610 AM 08/21 NYSM Staten Island 7.1 SW 1.58 in 0654 AM 08/21 COCORAHS Eltingville 1.45 in 0600 AM 08/21 CWOP ...Rockland County... Pomona 1.96 in 0613 AM 08/21 AWS Spring Valley 1.7 SSW 1.77 in 0830 AM 08/21 COCORAHS New City 1.76 in 0613 AM 08/21 AWS 1 SSW Mount Ivy 1.74 in 0614 AM 08/21 AWS Blauvelt 1.69 in 0600 AM 08/21 CWOP Spring Valley 1.65 in 0600 AM 08/21 CWOP Bardonia 1.56 in 0613 AM 08/21 AWS Suffern 1.51 in 0610 AM 08/21 NYSM Suffern 1.49 in 0613 AM 08/21 AWS Nanuet 1.49 in 0830 AM 08/21 IFLOWS Montebello 1.41 in 0600 AM 08/21 CWOP Stony Point 1.36 in 0614 AM 08/21 AWS Stony Point 1.34 in 0700 AM 08/21 COCORAHS 0.9 N Montebello 1.30 in 0830 AM 08/21 HADS ...Suffolk County... Patchogue 0.9 SE 5.05 in 0630 AM 08/21 COCORAHS Blue Point 4.84 in 0600 AM 08/21 CWOP Shirley 4.72 in 0540 AM 08/21 COCORAHS Blue Point 0.3 ENE 4.65 in 0700 AM 08/21 COCORAHS Sayville 4.64 in 0605 AM 08/21 CWOP Islip Terrace 0.2 NNW 4.50 in 0645 AM 08/21 COCORAHS ISLIP 4.36 in 0600 AM 08/21 CWOP Center Moriches 4.33 in 0600 AM 08/21 COCORAHS Shirley 4.32 in 0600 AM 08/21 CWOP Bay Shore 2.7 NNW 4.30 in 0730 AM 08/21 COCORAHS Remsenburg-Speonk 0.9 NE 4.21 in 0700 AM 08/21 COCORAHS Miller Place 4.20 in 0610 AM 08/21 CWOP 2 WNW Riverhead 4.20 in 0613 AM 08/21 AWS Copiague 0.4 ENE 4.20 in 0800 AM 08/21 COCORAHS Sayville 4.14 in 0700 AM 08/21 COCORAHS Islip Terrace 4.14 in 0800 AM 08/21 COCORAHS Bay Shore 4.12 in 0700 AM 08/21 COCORAHS Brightwaters 4.11 in 0700 AM 08/21 COCORAHS 1 SSE Manorville 4.04 in 0745 AM 08/21 COCORAHS COMMACK 3.94 in 0606 AM 08/21 CWOP Eastport 3.88 in 0845 AM 08/21 RAWS Westhampton Airport 3.86 in 0553 AM 08/21 ASOS Amityville 3.80 in 0800 AM 08/21 COCORAHS North Patchogue 3.77 in 0610 AM 08/21 CWOP Islip Airport 3.66 in 0556 AM 08/21 ASOS North Babylon 3.64 in 0602 AM 08/21 CWOP Upton 3.63 in 0800 AM 08/21 COOP N. Babylon 3.56 in 0610 AM 08/21 CWOP Centereach 3.56 in 0700 AM 08/21 COCORAHS Dix Hills 3.53 in 0609 AM 08/21 CWOP Setauket-East Setauket 0.7 S 3.48 in 0735 AM 08/21 COCORAHS Melville 3.47 in 0600 AM 08/21 CWOP Northport 3.45 in 0610 AM 08/21 CWOP Wading River 0.3 N 3.28 in 0700 AM 08/21 COCORAHS Amityville 0.3 NNW 3.26 in 0552 AM 08/21 COCORAHS East Setauket 3.21 in 0607 AM 08/21 CWOP Deer Park 1.0 NE 3.20 in 0734 AM 08/21 COCORAHS Ridge 1.5 SE 3.18 in 0500 AM 08/21 COCORAHS Setauket-East Setauket 2.1 W 3.13 in 0550 AM 08/21 COCORAHS Laurel 0.6 ESE 3.12 in 0700 AM 08/21 COCORAHS Baiting Hollow 3.10 in 0700 AM 08/21 COOP Northport 3.08 in 0606 AM 08/21 CWOP SMITHTOWN 3.06 in 0600 AM 08/21 CWOP West Gilgo Beach 3.05 in 0610 AM 08/21 CWOP Stony Brook 3.01 in 0610 AM 08/21 NYSM Saint James 3.00 in 0552 AM 08/21 CWOP FAIR HARBOR 2.96 in 0610 AM 08/21 CWOP Mattituck 1.4 SSE 2.94 in 0749 AM 08/21 COCORAHS Southold 0.3 ESE 2.87 in 0700 AM 08/21 COCORAHS Selden 1.6 ESE 2.87 in 0800 AM 08/21 COCORAHS Orient 2.86 in 0610 AM 08/21 CWOP East Hampton 2.68 in 0610 AM 08/21 CWOP 2 E Dix Hills 2.64 in 0615 AM 08/21 AWS ORIENT 2.60 in 0610 AM 08/21 CWOP Southold 2.60 in 0610 AM 08/21 NYSM Centerport 1.1 SE 2.59 in 0700 AM 08/21 COCORAHS Smithtown 2.37 in 0600 AM 08/21 CWOP Orient 2.7 ENE 2.26 in 0830 AM 08/21 COCORAHS Peconic 0.8 NNW 2.18 in 0653 AM 08/21 COCORAHS Farmingdale Airport 2.03 in 0853 AM 08/21 ASOS 1 E East Hampton Airport 2.02 in 0615 AM 08/21 AWOS Ridge 1.91 in 0610 AM 08/21 CWOP Southold 1.82 in 0605 AM 08/21 CWOP ...Westchester County... New Rochelle 3.20 in 0600 AM 08/21 CWOP Bronxville 2.53 in 0613 AM 08/21 AWS Rye Brook 2.17 in 0614 AM 08/21 AWS PORT CHESTER 2.16 in 0509 AM 08/21 CWOP Tarrytown 2.11 in 0602 AM 08/21 CWOP Ossining 2.08 in 0608 AM 08/21 CWOP 1 SSE Hartsdale 2.04 in 0615 AM 08/21 AWS Mount Kisco 1.98 in 0609 AM 08/21 CWOP 1 S Peach Lake 1.97 in 0615 AM 08/21 AWS 1 NW Rye 1.90 in 0613 AM 08/21 AWS Briarcliff Manor 1.90 in 0700 AM 08/21 COCORAHS Thornwood 1.89 in 0810 AM 08/21 COCORAHS SCARSDALE 1.88 in 0600 AM 08/21 CWOP Armonk 1.85 in 0800 AM 08/21 COCORAHS Pleasantville 1.83 in 0615 AM 08/21 AWS Somers 1.73 in 0610 AM 08/21 NYSM Peekskill 2.8 NNE 1.69 in 0700 AM 08/21 COCORAHS Midland Park 1.64 in 0845 AM 08/21 IFLOWS Elmsford 1.61 in 0614 AM 08/21 AWS Hastings-on-hudson 1.54 in 0600 AM 08/21 CWOP South Salem 1.51 in 0715 AM 08/21 COCORAHS Yorktown Heights 2.7 NNW 1.50 in 0700 AM 08/21 COCORAHS Shrub Oak 1.41 in 0700 AM 08/21 COOP Rye 1.37 in 0614 AM 08/21 AWS |
Local Storm Reports
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0550 PM Flash Flood 1 SSW Clifton 40.85N 74.17W
08/20/2026 Passaic NJ Broadcast Media
Corrects previous flash flood report from 1
SSW Clifton. Flooding on NJ 3 Westbound East
of Garden State Parkway, 2 left lanes of 3
lanes closed. Reported by 511nj.org.
0604 PM Flash Flood 1 ENE Secaucus 40.79N 74.05W
08/20/2026 Hudson NJ Public
1 right lane of 2 lanes closed due to
flooding reported by 511.org.
0613 PM Flash Flood Harrison 40.74N 74.16W
08/20/2026 Hudson NJ CO-OP Observer
Water rescues being conducted.
0618 PM Marine Tstm Wind 2 N Tompkinsville 40.66N 74.06W
08/20/2026 M48 MPH ANZ338 NY Mesonet
Mesonet station ROBN4 Robbins Reef, NJ.
0621 PM Flash Flood East Newark 40.75N 74.17W
08/20/2026 Essex NJ Broadcast Media
Corrects previous flash flood report from
East Newark. Flooding on US 1&9/Tonnelle
Avenue Northbound South of Secaucus Rd. 1
right lane of 2 lanes closed. Reported by
511nj.org.
0625 PM Flash Flood 1 NNW Teterboro Airport 40.87N 74.06W
08/20/2026 Bergen NJ Broadcast Media
Corrects previous flash flood report from 1
NNW Teterboro Airport. Flooding on NJ 17
Both Directions North of US 46. All lanes
closed southbound. Reported by 511nj.org.
0630 PM Tstm Wnd Dmg 1 WSW Upper Nyack 41.11N 73.93W
08/20/2026 Rockland NY Other Federal
Tree down on US 9W southbound south of Old
Mountain Road.
0647 PM Tornado 1 W Atlantic Beach 40.59N 73.75W
08/20/2026 Nassau NY NWS Storm Survey
NWS storm survey confirmed an EF-1 tornado
producing a narrow swath of damage with
estimated wind gusts of 65 to 97 mph across
the far western end of Atlantic Beach
between 647pm and 650pm. Moderate to major
damage to nearly 50 beach bungalows and
storage units and adjacent decking and
railing, as well as window damage to nearly
30 cars, and destruction of 30 yards of sand
fencing.
0647 PM Flash Flood 1 ESE Jackson Heights 40.77N 73.86W
08/20/2026 Queens NY Broadcast Media
Corrects previous flash flood report from 1
ESE Jackson Heights. 3 left lanes of 4 lanes
blocked near terminal C at LGA as reported
by 511.org.
0654 PM Marine Tstm Wind NYC/JFK 40.64N 73.76W
08/20/2026 M48 MPH Queens NY ASOS
ASOS station KJFK NYC/JFK Airport.
0704 PM Flash Flood 1 W Elizabeth 40.67N 74.20W
08/20/2026 Union NJ Dept of Highways
All lanes closed on US 1&9 Northbound North
of Grand St. Reported by 511nj.org.
0727 PM Tstm Wnd Dmg 1 W Atlantic Beach 40.59N 73.75W
08/20/2026 Nassau NY Public
Widespread damage to structures with photos
reported on Facebook.
0728 PM Marine Tstm Wind Eatons Neck 40.95N 73.40W
08/20/2026 M39 MPH Suffolk NY Mesonet
Corrects previous non-tstm wnd gst report
from Eatons Neck. Mesonet station XEAT
Eatons Neck.
0752 PM Flash Flood Melville 40.78N 73.42W
08/20/2026 Suffolk NY Dept of Highways
Flooding on NY 110 both directions at
Melville Park Drive. 2 right lanes of 3
lanes closed. Reported by 511ny.org.
0755 PM Marine Tstm Wind 3 WSW Davis Park 40.67N 73.07W
08/20/2026 M48 MPH Suffolk NY Mesonet
Halley Dr Mesonet.
0759 PM Marine Tstm Wind 2 WNW Captree State Par 40.65N 73.30W
08/20/2026 M39 MPH ANZ345 NY Mesonet
Mesonet station XGRS Fire Island CG.
0814 PM Marine Tstm Wind 39 S Jones Beach 40.04N 73.44W
08/20/2026 M40 MPH ANZ385 NY Mesonet
Mesonet station XGLL Greens Ledge Light.
0829 PM Flash Flood North Babylon 40.74N 73.32W
08/20/2026 Suffolk NY Dept of Highways
Flooding on NY 231 northbound at Ryder
Avenue. All lanes closed. Reported by
511ny.org.
0913 PM Flash Flood East Massapequa 40.68N 73.43W
08/20/2026 Nassau NY Dept of Highways
Flooding on NY 27 both directions at Carmans
Road. All lanes closed. Reported by
511ny.org.
|
The above link and map are courtesy of the Iowa State University State Mesonet (IEM) National Weather Service Text Product Archive
Surface Analysis
500 mb Analysis
Mesoscale Analysis
SBCAPE (top left), 0-6km shear (top right), and 0-3km helicity (bottom left) valid at 5 pm August 20, 2026, and Precipitable Water (bottom right) valid at 8 pm August 20, 2026
| Atlantic Beach, NY Source: NWS NY Storm Survey |
Atlantic Beach, NY Source: NWS NY Storm Survey |
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| Atlantic Beach, NY Source: NWS NY Storm Survey |
Atlantic Beach, NY Source: NWS NY Storm Survey |
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| Atlantic Beach, NY Source: NWS NY Storm Survey |
Atlantic Beach, NY Source: NWS NY Storm Survey |
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