Alert archive / New York / Flash Flood Warnings in 2023

Flash Flood Warning 51, NWS New York, NY

September 29, 2023Kings County, Nassau County, Queens County, New York

NWS New York, NY issued this flash flood warning at Sep 29, 2023, 1:43 AM EDT for Kings County, Nassau County, Queens County, New York. It was in force for 16 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 29, 2023, 1:43 AM EDT (05:43 UTC)
Expired: Sep 29, 2023, 5:15 PM EDT
In force: 16 hr
Issued by: NWS New York, NY
Area: Storm-based polygon
Flood severity: None

Counties Kings County, NY, Nassau County, NY, Queens County, NY

The radar

The Brookhaven radar (KOKX), 81 km from the middle of the area, began a volume at 05:44 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 5.7 hours before the alert went out and 81 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 985 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Sep 28, 10:31 PM EDT, 3 hours 12 minutes earlier.

Area forecast discussion, Sep 28, 10:31 PM EDT, 3 hours 12 minutes before

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Hazardous weather outlook, Sep 28, 3:12 PM EDT, 10 hours 31 minutes before

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The office that day

Everything else NWS New York, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 28, 11:09 PM EDT	Areal Flood Advisory	OKX	Bronx, Kings, Nassau, Queens	3 hr
Sep 29, 12:48 AM EDT	Areal Flood Advisory	OKX	Nassau, Suffolk	3 hr
Sep 29, 3:57 AM EDT	Areal Flood Advisory	OKX	Suffolk	3 hr
Sep 29, 6:30 AM EDT	Areal Flood Advisory	OKX	Rockland	4 hr
Sep 29, 7:08 AM EDT	Areal Flood Advisory	OKX	Kings, New York, Richmond	3 hr
Sep 29, 7:29 AM EDT	Flash Flood Warning	OKX	Kings, New York, Richmond	3 hr
Sep 29, 7:55 AM EDT	Areal Flood Advisory	OKX	Bronx, New York, Rockland, Westchester	3 hr
Sep 29, 8:24 AM EDT	Flash Flood Warning	OKX	Bronx, New York, Queens	7 hr
Sep 29, 8:47 AM EDT	Flash Flood Warning	OKX	Rockland, Westchester	4 hr
Sep 29, 9:20 AM EDT	Areal Flood Advisory	OKX	Putnam, Rockland, Westchester	5 hr
Sep 29, 9:22 AM EDT	Flash Flood Warning Considerable damage threat	OKX	Kings, New York, Queens	5 hr
Sep 29, 10:18 AM EDT	Flash Flood Warning	OKX	Westchester	7 hr
Sep 29, 10:58 AM EDT	River Flood Warning	OKX	Orange, Rockland	11 hr
Sep 29, 12:57 PM EDT	Flash Flood Warning Considerable damage threat	OKX	Bronx, New York, Westchester	3 hr
Sep 29, 2:17 PM EDT	Areal Flood Advisory	OKX	Putnam, Westchester	106 min
Sep 29, 3:13 PM EDT	Flash Flood Warning Considerable damage threat	OKX	Nassau	3 hr
Sep 29, 3:37 PM EDT	Flash Flood Warning	OKX	Suffolk	3 hr
Sep 29, 4:48 PM EDT	Areal Flood Warning	OKX	Bronx, Westchester	16 hr
Sep 29, 5:26 PM EDT	Areal Flood Advisory	OKX	Westchester	3 hr
Sep 29, 5:39 PM EDT	Areal Flood Advisory	OKX	Westchester	104 min
Sep 29, 5:50 PM EDT	Flash Flood Warning	OKX	Suffolk	3 hr
Sep 29, 6:06 PM EDT	Areal Flood Advisory	OKX	Rockland	3 hr
Sep 29, 4:33 AM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	117 min
Sep 29, 12:24 PM EDT	Flash Flood Warning	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	5 hr
Sep 29, 3:49 PM EDT	Flash Flood Warning Considerable damage threat	OKX	Greater Bridgeport Planning Region	116 min
Sep 29, 6:33 PM EDT	Areal Flood Advisory	OKX	Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region	3 hr
Sep 29, 7:22 PM EDT	Areal Flood Advisory	OKX	Greater Bridgeport Planning Region, Naugatuck Valley Planning Region	83 min
Sep 29, 7:35 PM EDT	Areal Flood Warning	OKX	Naugatuck Valley Planning Region	7 hr
Sep 29, 7:42 AM EDT	Areal Flood Advisory	OKX	Bergen, Essex, Passaic	3 hr
Sep 29, 9:36 AM EDT	River Flood Warning	OKX	Bergen	18 hr

Nearby

Flash Flood Warnings in New York, 2023 Every flash flood warning in 2023

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.