Watches, Warnings, and Advisories

Current Watches, Warnings and Advisories for Northwest Suffolk (NYZ078) New York Issued by the National Weather Service


Flood Watch Flood Watch - Northwest Suffolk (New York)

Updated:09/28/2023 10:53pm
Effective:09/28/2023 10:00pm
Expires:09/30/2023 2:00am

Areas affected: Northeast Suffolk; Northern Nassau; Northern Queens; Northwest Suffolk; Southeast Suffolk; Southwest Suffolk
Instructions: You should monitor later forecasts and be prepared to take action should impact based flash flood warnings be issued.

Message summary: ...flood watch remains in effect from 2 am edt friday through late friday night...
* what...scattered to numerous instances of flash flooding likely. Locally considerable flash flooding is possible.
* where...portions of southern connecticut, including the following areas, northern fairfield, northern new haven, southern fairfield and southern new haven. 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. Portions of southeast new york, including the following areas, bronx, kings (brooklyn), new york (manhattan), northeast suffolk, northern nassau, northern queens, northern westchester, northwest suffolk, orange, putnam, richmond (staten island), rockland, southeast suffolk, southern nassau, southern queens, southern westchester and southwest suffolk.
* when...from 2 am edt friday through late friday night.
* impacts...excessive runoff will likely result in scattered to numerous instances of flash flooding of urban and poor drainage areas. Locally considerable flash flooding is possible where axis of heaviest rain develops and sits for several hours. If this heavier rainfall axis develops over the flashy river and stream basins of northeastern nj, lower hudson valley, and southwestern ct, moderate flood stages could be exceeded.
* additional details...
- -a widespread 2 to 4 inches of rain is expected, with localized amounts in excess of 5 inches possible. Rainfall rates of 1 to 2"/hr likely in heaviest rainfall axis, with rates in excess of 2"/hr possible. -flooding will be exacerbated in coastal areas where heavy rainfall coincides with this morning and and evening high tides. -the exact axis of excessive rainfall is still uncertain, but those in the watch areas should prepare for the potential of considerable flooding. -
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Coastal Flood Statement Coastal Flood Statement - Northwest Suffolk (New York)

Updated:09/28/2023 8:35pm
Effective:09/28/2023 10:00pm
Expires:09/30/2023 2:00am

Areas affected: Northeast Suffolk; Northern Nassau; Northwest Suffolk
Message summary: ...coastal flood statement remains in effect through late friday night...
* what...up to one half foot of inundation above ground level expected in vulnerable areas near the waterfront and shoreline around the times of high tide.
* where...northwest suffolk, northeast suffolk and northern nassau counties.
* when...from 10 pm edt this evening through late friday night.
* coastal flood impacts...brief minor flooding of the more vulnerable locations near the waterfront and shoreline.
* shoreline impacts...breaking waves of 2 to 3 ft on the north shore of long island, and 3 to 5 ft at orient point will result in beach erosion and flooding and possible localized dune erosion. Splashover bulkheads and dune structures may locally exacerbate flooding for shoreline roads and properties.
* additional details...minor flooding may also be possible around the time of high tide saturday morning. Precautionary/preparedness actions...
Do not drive through flooded roadways.
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Source: NWS Watches, Warnings or Advisories for zone NYZ078

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