Alert archive / New York / Flash Flood Warnings in 2000

Flash Flood Warning 38, NWS New York, NY

September 3, 2000Nassau County, Suffolk County, New York

NWS New York, NY issued this flash flood warning at Sep 3, 2000, 12:52 PM EDT for Nassau County, Suffolk County, New York. It was in force for 2 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 3, 2000, 12:52 PM EDT (16:52 UTC)
Expired
Sep 3, 2000, 3:15 PM EDT
In force
2 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Nassau County, NY, Suffolk County, NY

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 4.9 hours before the alert went out and 23 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-pSkew-T log-p diagram, Brookhaven, NY at 12:00Z on 2000-09-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 752 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2000-09-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
752 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
767 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS51 KOKX 031654
FFWOKX
NYC059-103-031915-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
1252 PM EDT SUN SEP 3 2000

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR THE FOLLOWING COUNTIES...

  IN SOUTHEASTERN NEW YORK STATE...
     SOUTHERN SUFFOLK...
     SOUTHERN NASSAU...

* UNTIL 315 PM EDT...

* AT 1252 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH VERY HEAVY RAIN OVER THE WARNED AREA.
  RADAR ESTIMATES OF ANYWHERE FROM 1 TO 3 INCHES OF RAINFALL HAVE
  BEEN INDICATED.

* SOME FLOOD PRONE LOCATIONS IN THE WARNING AREA INCLUDE...
  FLOOD PRONE AREAS SOUTH OF THE LONG ISLAND EXPRESSWAY...INCLUDING
  THE SOUTHERN STATE PARKWAY AND SUNRISE HIGHWAY.

THESE THUNDERSTORMS HAVE SHOWN VERY LITTLE MOVEMENT IN THE LAST 1 TO
2 HOURS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED. MOVE TO
HIGHER GROUND.

$$

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN UPTON NY.

LAT...LON 4099 7238 4085 7238 4058 7356 4075 7358

$$
MW

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 3, 1:11 PM EDTFlash Flood WarningOKXSuffolk3 hr
Sep 3, 2:14 PM EDTFlash Flood WarningOKXQueens3 hr
Sep 3, 3:20 PM EDTFlash Flood WarningOKXNew York3 hr

Nearby

Flash Flood Warnings in New York, 2000Every flash flood warning in 2000

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.