A stationary front near the area forced torrential thunderstorms in a tropical airmass resulting in widespread flash flooding in NY. The first round of thunderstorms occurred early in the morning on July 16th.
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 OKX wrote it up.
A stationary front near the area forced torrential thunderstorms in a tropical airmass resulting in widespread flash flooding in NY. The first round of thunderstorms occurred early in the morning on July 16th. Another round of thunderstorms occurred later in the afternoon. The tropical airmass had CAPE values 1500 - 2000 J/kg with PWATs 2.2-2.4 inches. The torrential thunderstorms produced rainfall rates as much as 3 inches an hour. Rainfall amounts totaled a widespread 2-4 inches across Long Island with localized spots seeing as much as 5 inches of rain.
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 New York, NY wrote its last area forecast discussion before the first event at Jul 16, 5:43 AM EST, 2 minutes earlier.
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</html>Hazardous Weather Outlook National Weather Service New York NY 343 AM EDT Sun Jul 16 2023 CTZ005>012-NJZ002-004-006-103>108-NYZ067>074-078-079-176-177-170745- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Western Passaic- Eastern Passaic-Hudson-Western Bergen-Eastern Bergen-Western Essex- Eastern Essex-Western Union-Eastern Union-Orange-Putnam-Rockland- Northern Westchester-Southern Westchester-New York (Manhattan)-Bronx- Richmond (Staten Island)-Northwest Suffolk-Northeast Suffolk- Northern Queens-Northern Nassau- 343 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... This Hazardous Weather Outlook is for southern Connecticut, northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ075-080-081-178-179-170745- Kings (Brooklyn)-Southwest Suffolk-Southeast Suffolk-Southern Queens- Southern Nassau- 343 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Rip Current Risk. Flood Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ331-332-335-338-340-345-350-353-355-170745- Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River- Long Island Sound East of the Mouth of the Connecticut River- Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor-Peconic and Gardiners Bays- South Shore Bays from Jones Inlet through Shinnecock Bay- Moriches Inlet NY to Montauk Point NY out 20 nm- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 343 AM EDT Sun Jul 16 2023 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches, warnings, and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria.
Special Weather Statement
National Weather Service New York NY
508 AM EDT Sun Jul 16 2023
NYZ067-161000-
Orange NY-
508 AM EDT Sun Jul 16 2023
...A strong thunderstorm will impact portions of western Orange
County through 600 AM EDT...
At 508 AM EDT, Doppler radar was tracking a strong thunderstorm near
Unionville, or 7 miles east of Port Jervis, moving northeast at 15
mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Middletown, Goshen, Howells, Cuddebackville, Otisville, Huguenot,
Unionville, Scotchtown, Mechanicstown, Westtown, Slate Hill, Pine
Island, Circleville, Bullville and New Hampton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4150 7460 4150 7448 4155 7444 4158 7440
4149 7422 4125 7447 4136 7469
TIME...MOT...LOC 0908Z 212DEG 12KT 4136 7455
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPHSpecial Weather Statement
National Weather Service New York NY
617 AM EDT Sun Jul 16 2023
NJZ002-004-103-NYZ067-069-161100-
Western Bergen NJ-Western Passaic NJ-Eastern Passaic NJ-Rockland NY-
Orange NY-
617 AM EDT Sun Jul 16 2023
...A strong thunderstorm will impact portions of central Passaic,
northwestern Bergen, southeastern Orange and Rockland Counties
through 700 AM EDT...
At 616 AM EDT, Doppler radar was tracking a strong thunderstorm over
Kinnelon, or near Pompton Lakes, moving northeast at 20 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Wayne, Ridgewood, Monsey, Nanuet, Ramsey, Ringwood, Pompton Lakes,
Suffern, Sloatsburg, Pearl River, Bloomingdale, Pomona, Spring
Valley, Wyckoff and Oakland.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4128 7415 4107 7392 4104 7399 4107 7406
4104 7407 4100 7407 4091 7427 4093 7429
4097 7428 4098 7430 4100 7430 4100 7435
4101 7435 4101 7439 4103 7442 4102 7443
4104 7443 4105 7444
TIME...MOT...LOC 1016Z 230DEG 18KT 4098 7436
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPHThe Brookhaven radar (KOKX), 123 km away, was scanning. The volume nearest the first event began at 10:47 UTC.
13 flash flood. Local standard time, as filed.
Portion of Gilbert Street in the village of Monroe closed due to flooding.
DOT reports flooding and road closure on NY 116 in both directions between North Road and Hunt Lane with all lanes closed.
Flooding on NY 27 in both directions at Exit 46 from Carleton Ave to Connetquot Ave with all lanes closed.
Flooding on Southern State Parkway westbound at Exit 44W with all lanes closed.
Road closure with major flooding on Sunrise Highway between West of Route 111 to and through Heckshire State Parkway with multiple reports of persons stranded in vehicles with several local fire departments performing water rescues. 5.23 inches of rain in 2 hours.
Flooding on NY 231 Northbound between Garnet Street, Ryder Avenue, and Weeks Road with all lanes closed.
Portion of the Cross island Parkway near Northern Blvd closed due to flooding.
Video shows impassible roadway due to flooding in East Quogue.
Disabled vehicle trapped in flood waters in East Hampton.
Intersection of Collins Ave and N Main Street in East Hampton is underwater and impassible.
Widespread road closures in Southampton due to flooding.
Several feet of water in basement on Meadow Court.
N Main Street closed due to flooding between Collins Ave and Cedar Street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in New York in 2023Every state in 2023This day in weather historyWarnings in New York, July 2023
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: 1122706, 1122683, 1122678, 1122679, 1122689, 1122675, 1122703, 1122696, 1122692, 1122694, 1122693, 1122695, 1122697.