July 31, 2025 Flash Flooding Across Portions of NYC metro, Northeast New Jersey, Long Island, and Orange County

Radar Summary

Observed Rainfall

Local Storm Reports

Weather Maps

Overview

A tropical air mass combined with a stationary cold front across the region to produce areas heavy showers and thunderstorms and flash flooding.
The heaviest rainfall and associated flash flooding occurred across northern Queens, Richmond County, Northwest Nassau County, and central Suffolk Counties where 2 to 4 inches of rain was observed.
Localized amounts between 6 and 6.5 inches were also reported in northern Queens.
Rainfall rates ranged from 1.5-3 inches per hour in the heaviest rain.
8 flash flood warnings were issued with two warnings for the NYC metro upgraded to considerable tag (FEMA Wireless Emergency Alert (WEA).
The flooding caused several major road closures including the Clearview Expressway and Cross Island Parkway.
A large truck was also partially submerged in flooding on the Clearview Expressway.
Partial or full road closures were also reported in parts of Essex County, Nassau and Suffolk Counties.

Radar Summary

Click here for an interactive version of this loop. Radar loop courtesy of the Iowa Environmental Mesonet and runs from 5:00 AM EDT Thursday, July 31 through 11:00 PM EDT Thursday, July 21. The large yellow boxes represent severe thunderstorm watches, yellow polygons represent severe thunderstorm warnings, green polygons represent flash flood warnings and flood advisories, 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

...Connecticut...

...Fairfield County...
Sherman 1.2 E                1.28 in   0700 AM 08/01   COCORAHS             
Danbury                      1.25 in   0956 AM 08/01   CWOP                 
Brookfield                   1.14 in   0700 AM 08/01   COCORAHS             
Danbury                      1.14 in   1000 AM 08/01   CWOP                 
NEWTOWN                      1.06 in   0959 AM 08/01   CWOP                 
Danbury Airport              1.01 in   0953 AM 08/01   ASOS                 

...Middlesex County...
Saybrook Manor               1.40 in   1000 AM 08/01   AWS                  
Clinton                      1.03 in   0955 AM 08/01   AWS                  

...New Haven County...
WALLINGFORD                  1.34 in   0959 AM 08/01   CWOP                 
BRANFORD                     1.26 in   1000 AM 08/01   CWOP                 
Hamden                       1.15 in   0700 AM 08/01   COCORAHS             
Wallingford                  1.08 in   0700 AM 08/01   COCORAHS             
Stony Creek                  1.04 in   0957 AM 08/01   CWOP                 
NORTH PORT                   1.03 in   0945 AM 08/01   CWOP                 
Branford                     1.00 in   0955 AM 08/01   CWOP

New Jersey


  Location                    Amount    Time/Date      Provider

...Bergen County...
WALLKILL                     2.83 in   0958 AM 08/01   CWOP                 
Ridgwood                     1.94 in   0957 AM 08/01   CWOP                 

...Essex County...
0.6 SW Caldwell              3.40 in   0945 AM 08/01   IFLOWS               
Essex Fells                  3.39 in   0710 PM 07/31   Public               
Livingston Twp 2.0 NNE       2.52 in   0900 AM 08/01   COCORAHS             
WEST CALDWELL                2.45 in   0955 AM 08/01   CWOP                 
Montclair                    2.30 in   0800 AM 08/01   COCORAHS             
West Caldwell Twp 1.3 NE     2.18 in   0900 AM 08/01   COCORAHS             
Montclair                    2.16 in   1000 AM 08/01   AWS                  
West Caldwell                1.71 in   0959 AM 08/01   AWS                  
West Orange                  1.55 in   0954 AM 08/01   CWOP                 
1.6 W Millburn               1.52 in   0925 AM 08/01   HADS                 
West Orange Twp 0.6 WNW      1.45 in   0700 AM 08/01   COCORAHS             
1 W Orange                   1.42 in   0954 AM 08/01   URBANET              
Millburn                     1.42 in   1000 AM 08/01   AWS                  

...Hudson County...
1 WSW Hoboken                1.36 in   0800 AM 08/01   COCORAHS             
1 ENE Jersey City            1.00 in   1000 AM 08/01   AWS                  

...Passaic County...
Little Falls                 1.14 in   0700 AM 08/01   COCORAHS             
0.8 E West Paterson          1.12 in   0945 AM 08/01   HADS                 
CLIFTON                      1.10 in   0954 AM 08/01   CWOP                 

...Union County...
New Providence               2.07 in   0730 AM 08/01   COCORAHS             
Mountainside                 1.96 in   0930 AM 08/01   IFLOWS               
Bayside                      1.17 in   0959 AM 08/01   CWOP                 
Westfield 0.8 WSW            1.01 in   0647 AM 08/01   COCORAHS             
Cranford Twp 1.1 ESE         1.01 in   0700 AM 08/01   COCORAHS             
Springfield                  1.00 in   0830 AM 08/01   COCORAHS

New York


  Location                    Amount    Time/Date      Provider

...Bronx County...
1 NE Harlem                  1.14 in   1000 AM 08/01   AWS                  

...Kings County...
Prospect Park                2.49 in   0955 AM 08/01   AWS                  
Brooklyn College             1.49 in   0940 AM 08/01   NYSM                 
Dyker Heights                1.41 in   1000 AM 08/01   CWOP                 
South Slope                  1.40 in   0955 AM 08/01   CWOP                 
Brooklyn                     1.39 in   0955 AM 08/01   CWOP                 
Brooklyn                     1.21 in   0955 AM 08/01   CWOP                 

...Nassau County...
Great Neck                   3.35 in   0959 AM 08/01   CWOP                 
1 N Merrick                  2.38 in   0955 AM 08/01   AWS                  
Levittown                    2.31 in   0955 AM 08/01   AWS                  
Seaford 0.4 SE               2.17 in   0411 AM 08/01   COCORAHS             
Herricks                     1.98 in   0800 AM 08/01   COCORAHS             
NORTH MASSAPEQUA             1.88 in   0958 AM 08/01   CWOP                 
Massapequa                   1.80 in   0430 PM 07/31   Cocorahs             
Levittown                    1.80 in   0945 AM 08/01   CWOP                 
North Massapequa             1.71 in   0945 AM 08/01   CWOP                 
Massapequa Park              1.66 in   0930 AM 08/01   CWOP                 
Albertson 0.2 SSE            1.60 in   0700 AM 08/01   COCORAHS             
Bethpage                     1.51 in   0958 AM 08/01   AWS                  
East Hills                   1.51 in   1000 AM 08/01   AWS                  
MASSAPEQUA                   1.38 in   0959 AM 08/01   CWOP                 
Freeport                     1.36 in   1000 AM 08/01   AWS                  
Massapequa Park              1.35 in   0700 AM 08/01   COCORAHS             
Wantagh                      1.34 in   0940 AM 08/01   NYSM                 
Hicksville                   1.17 in   0959 AM 08/01   CWOP                 
Syosset                      1.12 in   0815 AM 08/01   COOP                 
BRANCHVILLE                  1.09 in   0911 AM 08/01   CWOP                 
Muttontown                   1.09 in   1000 AM 08/01   CWOP                 
Bellmore                     1.04 in   0959 AM 08/01   CWOP                 
Port Washington              1.01 in   1000 AM 08/01   AWS                  
1 ESE Long Beach             1.00 in   0955 AM 08/01   AWS                  

...New York (Manhattan) County...
Battery Park                 1.30 in   0959 AM 08/01   AWS                  

...Orange County...
Port Jervis                  3.26 in   0630 AM 08/01   COCORAHS             
Middletown                   2.32 in   0956 AM 08/01   CWOP                 
4 SSE Middletown             2.25 in   0955 AM 08/01   AWS                  
0.8 N Port Jervis            2.10 in   0700 AM 08/01   COOP                 
Montgomery                   2.02 in   0955 AM 08/01   CWOP                 
Port Jervis                  1.96 in   0958 AM 08/01   CWOP                 
Walden                       1.94 in   0955 AM 08/01   CWOP                 
Montgomery                   1.85 in   1000 AM 08/01   CWOP                 
Otisville                    1.83 in   0940 AM 08/01   NYSM                 
Port Jervis                  1.81 in   1000 AM 08/01   AWS                  
Warwick 3.9 W                1.73 in   0600 AM 08/01   COCORAHS             
Cornwall On Hudson           1.68 in   0700 AM 08/01   COCORAHS             
Warwick                      1.64 in   0700 AM 08/01   COCORAHS             
2.6 NW Tuxedo Park           1.60 in   0945 AM 08/01   HADS                 
CORNWALL ON HUDSON           1.59 in   0956 AM 08/01   CWOP                 
NEW WINDSOR                  1.53 in   0956 AM 08/01   CWOP                 
US Military Academy          1.45 in   0855 AM 08/01   RAWS                 
Vails Gate                   1.34 in   0956 AM 08/01   CWOP                 
West Point                   1.31 in   0958 AM 08/01   AWS                  
Chester                      1.27 in   0955 AM 08/01   CWOP                 
Chester                      1.23 in   0955 AM 08/01   AWS                  
Newburgh                     1.20 in   0956 AM 08/01   CWOP                 
Warwick                      1.19 in   0940 AM 08/01   NYSM                 

...Putnam County...
Cold Spring                  1.74 in   0700 AM 08/01   COCORAHS             
Garrison 1.5 NE              1.45 in   0700 AM 08/01   COCORAHS             
Nelsonville 0.3 S            1.41 in   0700 AM 08/01   COCORAHS             
Mahopac                      1.39 in   1000 AM 08/01   AWS                  
Lake Carmel 0.7 NE           1.08 in   0700 AM 08/01   COCORAHS             
Lake Carmel                  1.00 in   0958 AM 08/01   CWOP                 

...Queens County...
Oakland Gardens              6.52 in   0950 AM 08/01   CWOP                 
2 SSE Bayside                6.35 in   1006 AM 08/01   Public               
2 WNW Little Neck            5.61 in   1012 AM 08/01   Public               
Little Neck 0.3 SE           3.34 in   0530 AM 08/01   COCORAHS             

...Richmond County...
Staten Island                2.78 in   0946 AM 08/01   CWOP                 
Westerleigh                  2.77 in   0700 AM 08/01   COCORAHS             
College of Staten Island     2.00 in   0940 AM 08/01   NYSM                 

...Suffolk County...
Sayville                     4.59 in   0955 AM 08/01   CWOP                 
Islip Airport                2.97 in   0956 AM 08/01   ASOS                 
Sayville                     2.75 in   0700 AM 08/01   COCORAHS             
Patchogue 0.9 SE             2.57 in   0504 AM 08/01   COCORAHS             
Sayville                     2.56 in   0700 AM 08/01   COCORAHS             
Blue Point                   2.52 in   1000 AM 08/01   CWOP                 
Upton                        2.45 in   0700 AM 08/01   COOP                 
Shirley Airport              2.44 in   0956 AM 08/01   ASOS                 
Bayport 1.0 SSE              2.40 in   0700 AM 08/01   COCORAHS             
Patchogue                    2.40 in   1000 AM 08/01   CWOP                 
Blue Point 0.3 ENE           2.20 in   0700 AM 08/01   COCORAHS             
Centereach                   2.14 in   0700 AM 08/01   COCORAHS             
North Patchogue              2.08 in   1000 AM 08/01   CWOP                 
Islip Terrace                2.01 in   0800 AM 08/01   COCORAHS             
FAIR HARBOR                  1.99 in   0957 AM 08/01   CWOP                 
Shirley                      1.97 in   0945 AM 08/01   CWOP                 
Selden 1.6 ESE               1.78 in   0545 AM 08/01   COCORAHS             
Baiting Hollow               1.77 in   0700 AM 08/01   COOP                 
Farmingdale Airport          1.76 in   0953 AM 08/01   ASOS                 
Dix Hills                    1.71 in   0959 AM 08/01   CWOP                 
Stony Brook                  1.68 in   0959 AM 08/01   CWOP                 
Selden                       1.67 in   1000 AM 08/01   AWS                  
Islip Terrace 0.2 NNW        1.63 in   0645 AM 08/01   COCORAHS             
Port Jefferson Station       1.62 in   0830 AM 08/01   COCORAHS             
SMITHTOWN                    1.60 in   0945 AM 08/01   CWOP                 
Miller Place                 1.60 in   0955 AM 08/01   CWOP                 
Saint James                  1.60 in   0957 AM 08/01   CWOP                 
Mattituck                    1.58 in   0900 AM 08/01   COCORAHS             
Islip Terrace 0.5 W          1.55 in   0700 AM 08/01   COCORAHS             
ISLIP                        1.55 in   0959 AM 08/01   CWOP                 
COMMACK                      1.53 in   1000 AM 08/01   CWOP                 
Ridge                        1.50 in   0956 AM 08/01   CWOP                 
Amityville 0.3 NNW           1.49 in   0700 AM 08/01   COCORAHS             
1 SSE Manorville             1.44 in   0800 AM 08/01   COCORAHS             
Smithtown 2.0 SSW            1.39 in   0800 AM 08/01   COCORAHS             
Smithtown                    1.27 in   0945 AM 08/01   CWOP                 
Bay Shore                    1.24 in   0700 AM 08/01   COCORAHS             
Baiting Hollow               1.18 in   1000 AM 08/01   CWOP                 
Center Moriches              1.17 in   0600 AM 08/01   COCORAHS             
Eastport                     1.05 in   0945 AM 08/01   RAWS                 
Southold                     1.02 in   0940 AM 08/01   NYSM                 

...Westchester County...
Peekskill 2.8 NNE            1.39 in   0600 AM 08/01   COCORAHS             
1 S Peach Lake               1.20 in   1000 AM 08/01   AWS                  
Somers                       1.00 in   0940 AM 08/01   NYSM

Local Storm Reports

Local Storm Report Summary


..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0900 PM     Flash Flood      2 NW Shirley Airport    40.84N 72.89W
07/31/2025                   Suffolk            NY   Public           

            Moriches Middle Island Road flooded in 
            several spots stretching across the whole 
            road. 

0630 PM     Flash Flood      1 NW North Bellport     40.79N 72.95W
07/31/2025                   Suffolk            NY   Law Enforcement  

            Law enforcement reports numerous road 
            closures from Medford to North Bellport. 

0627 PM     Flash Flood      Holbrook                40.79N 73.07W
07/31/2025                   Suffolk            NY   Law Enforcement  

            Law enforcement reports multiple roads 
            closed throughout Holbrook due to flooding. 

0550 PM     Flash Flood      1 S Bohemia             40.76N 73.12W
07/31/2025                   Suffolk            NY   Public           

            Video showing an SUV with floodwaters up to 
            the windows in a parking lot. 

0547 PM     Flash Flood      1 NNE Oakdale           40.74N 73.13W
07/31/2025                   Suffolk            NY   NWS Employee     

            Oakdale-Bohemia Rd flooded. No cars can 
            pass, cars stuck. 

0539 PM     Flash Flood      1 W Sayville            40.75N 73.11W
07/31/2025                   Suffolk            NY   Public           

            Reports of several feet of water at the 
            intersection of Locust Ave and Bourne Blvd. 

0519 PM     Flash Flood      West Sayville           40.73N 73.11W
07/31/2025                   Suffolk            NY   Law Enforcement  

            Car stuck in flood waters on Bartley Lane. 

0500 PM     Flash Flood      1 WSW Levittown         40.72N 73.53W
07/31/2025                   Nassau             NY   Public           

            Video showing feet of water on the 
            intersection of Chimney Lane and Loring 
            Road. Time estimated. 

0431 PM     Flash Flood      2 N Bay Ridge           40.65N 74.01W
07/31/2025                   Kings              NY   Trained Spotter  

            Video showing street flooded with up to a 
            foot of water with sewers pushing water onto 
            the street. 

0430 PM     Flash Flood      Little Neck             40.76N 73.73W
07/31/2025                   Queens             NY   Trained Spotter  

            Corrects previous flood report from Little 
            Neck. Road Closure. 

0415 PM     Flash Flood      1 E Greenwich Village   40.75N 73.98W
07/31/2025                   New York (ManhattanNY   Public           

            Video showing significant amount of water 
            falling onto a Metro North train in Grand 
            Central Station. 

0410 PM     Flash Flood      Little Neck             40.76N 73.72W
07/31/2025                   Queens             NY   Public           

            Video showing cars stranded in floodwaters 
            on the Little Neck Parkway under the LIE 
            overpass. 

0406 PM     Flash Flood      1 W Westerleigh         40.62N 74.16W
07/31/2025                   Richmond           NY   Dept of Highways 

            Flooding on I-278 eastbound approaching 
            Lambert Street. 2 Left lanes of 4 lanes 
            closed. 

0401 PM     Flash Flood      1 W Bayside             40.79N 73.79W
07/31/2025                   Queens             NY   Dept of Highways 

            Flooding on I-295 southbound at Belt System 
            - Cross Island Parkway; Throgs Neck Approach 
            (New York) All lanes blocked. 

0401 PM     Flash Flood      1 W Bayside             40.79N 73.79W
07/31/2025                   Queens             NY   Dept of Highways 

            Flooding on I-295 southbound at Belt System 
            - Cross Island Parkway; Throgs Neck 
            Approach. All lanes blocked. 

0347 PM     Flash Flood      Russell Gardens         40.79N 73.73W
07/31/2025                   Nassau             NY   Public           

            Video showing a street covered in feet of 
            water that is spilling over onto the LIRR 
            Great Neck train station platform and 
            tracks. 

0336 PM     Flash Flood      1 NNW Orange            40.78N 74.24W
07/31/2025                   Essex              NJ   Dept of Highways 

            1-280 eastbound 3 lanes closed due to 
            flooding. 

0330 PM     Flash Flood      1 SE Elizabeth          40.66N 74.19W
07/31/2025                   Union              NJ   Public           

            Vehicle stuck in flood waters under bridge. 

0313 PM     Flash Flood      2 SSW Bayside           40.77N 73.78W
07/31/2025                   Queens             NY   Emergency Mngr   

            Large truck partially submerged. All lanes 
            of the Clearview Expressway closed. 

0305 PM     Flash Flood      1 SSW Roselle Park      40.66N 74.27W
07/31/2025                   Union              NJ   Fire Dept/Rescue 

            W 2nd Ave at Pine St closed. 

0259 PM     Flash Flood      2 SSW Bayside           40.77N 73.78W
07/31/2025                   Queens             NY   Dept of Highways 

            Flooding on I-295 both directions at 35th 
            Avenue (New York) All lanes blocked. 

0259 PM     Flash Flood      Summit                  40.72N 74.37W
07/31/2025                   Union              NJ   Public           

            Report from mPING: Street/road flooding; 
            Street/road closed; Vehicles stranded. 

0258 PM     Flash Flood      2 N Fresh Meadows       40.76N 73.78W
07/31/2025                   Queens             NY   Dept of Highways 

            Flooding on I-295 both directions at 
            Northern Boulevard; NY 25A (New York) All 
            lanes blocked. 

0227 PM     Flash Flood      Westfield               40.65N 74.34W
07/31/2025                   Union              NJ   Public           

            Report from mPING: Street/road flooding; 
            Street/road closed; Vehicles stranded. 

0910 AM     Flash Flood      1 E Montgomery Airport  41.51N 74.25W
07/31/2025                   Orange             NY   Public           

            NY 211 at Dunn road flooded. Not passable.

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

Precipitable Water