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Areal Flood Watch — Southern Westchester, NY, New York (Manhattan), NY, Bronx, NY, Richmond (Staten Is.), NY, Kings (Brooklyn), NY, Northwest Suffolk, NY, Southwest Suffolk, NY, Northern Queens, NY, Northern Nassau, NY, Southern Queens, NY, Southern Nassau, NY, Rockland, NY, Northern Westchester, NY
Issued
1:00 p. m. CDT · jue., ago. 20 2026
Expires
1:00 a. m. CDT · vie., ago. 21 2026
Issuing Office
NWS KOKX

Affected Areas

Southern Westchester, NY New York (Manhattan), NY Bronx, NY Richmond (Staten Is.), NY Kings (Brooklyn), NY Northwest Suffolk, NY Southwest Suffolk, NY Northern Queens, NY Northern Nassau, NY Southern Queens, NY Southern Nassau, NY Rockland, NY Northern Westchester, NY

Official Bulletin

401
WGUS61 KOKX 201555
FFAOKX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service New York NY
1155 AM EDT Thu Aug 20 2026

CTZ005-009-NYZ069-070-210600-
/O.EXA.KOKX.FA.A.0008.260820T1800Z-260821T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Northern Fairfield-Southern Fairfield-Rockland-Northern
Westchester-1155 AM EDT Thu Aug 20 2026

...FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flooding caused by excessive rainfall is possible.

* WHERE...Portions of southern Connecticut, including the following
  areas, Northern Fairfield and Southern Fairfield and southeast New
  York, including the following areas, Northern Westchester and
  Rockland.

* WHEN...From 2 PM this afternoon through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
  - A period of heavy rainfall is possible as showers and a few
    thunderstorms move through the area late this afternoon and
    evening. Peak hourly rainfall rates could reach 2 to 2.5 inches.
    Average rainfall amounts are expected to be between 1.5 and 2.5
    inches with locally higher amounts possible.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

$$

NJZ002-004-006-103>108-NYZ071>075-078-080-176>179-210600-
/O.CON.KOKX.FA.A.0008.260820T1800Z-260821T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern
Bergen-Western Essex-Eastern Essex-Western Union-Eastern Union-
Southern Westchester-New York (Manhattan)-Bronx-Richmond (Staten
Island)-Kings (Brooklyn)-Northwest Suffolk-Southwest Suffolk-
Northern Queens-Northern Nassau-Southern Queens-Southern Nassau-1155 AM EDT Thu Aug 20 2026

...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...Portions of northeast New Jersey, including the following
  areas, Eastern Bergen, Eastern Essex, Eastern Passaic, Eastern
  Union, Hudson, Western Bergen, Western Essex, Western Passaic and
  Western Union and southeast New York, including the following
  areas, Bronx, Kings (Brooklyn), New York (Manhattan), Northern
  Nassau, Northern Queens, Northwest Suffolk, Richmond (Staten
  Island), Southern Nassau, Southern Queens, Southern Westchester and
  Southwest Suffolk.

* WHEN...From 2 PM this afternoon through late tonight.

* IMPACTS...Excessive runoff may result in flooding of rivers,
  creeks, streams, and other low-lying and flood-prone locations.
  Flooding may occur in poor drainage and urban areas.

* ADDITIONAL DETAILS...
  - A period of heavy rainfall is possible as showers and a few
    thunderstorms move through the area late this afternoon and
    evening. Peak hourly rainfall rates could reach 2 to 2.5 inches.
    Average rainfall amounts are expected to be between 1.5 and 2.5
    inches with locally higher amounts possible.
  - http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

&&

$$

DS