Headline:
Flood Advisory issued August 21 at 2:30AM EDT until August 21 at 5:30AM EDT by NWS Upton NY
Event:
Flood Advisory
Urgency:
Expected
Effective:
August 20, 2026 - 11:30pm
Expires:
August 21, 2026 - 2:30am
Description:
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Central and Eastern Suffolk County in southeastern New
York...
* WHEN...Until 530 AM EDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Ponding of water in urban or other areas is occurring or is
imminent.
* ADDITIONAL DETAILS...
- At 228 AM EDT, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area.
Between 0.5 and 1 inch of rain has fallen within the past hour.
- Additional rainfall amounts of 1 to 2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Riverhead, Shirley, Manorville, Patchogue, Center Moriches,
Southampton, Westhampton, Sag Harbor, Bridgehampton, Gardiners
Island, Mastic, Mastic Beach, Yaphank, Noyack, Shelter Island,
Shinnecock Hills, East Hampton, Davis Park, Hither Hills State
Park and East Patchogue.
- http://www.weather.gov/safety/flood
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Area Description:
Suffolk, NY
Forcast Office:
NWS Upton NY
Sender:
w-nws.webmaster@noaa.gov