Alert archive / New York / Flash Flood Warnings in 2002

Flash Flood Warning 8, NWS New York, NY

August 16, 2002Bergen County, New Jersey; Bronx County, New York County, New York

NWS New York, NY issued this flash flood warning at Aug 16, 2002, 3:39 PM EDT for Bergen County, New Jersey; Bronx County, New York 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 outline as issued.

The facts

Issued
Aug 16, 2002, 3:39 PM EDT (19:39 UTC)
Expired
Aug 16, 2002, 5:45 PM EDT
In force
2 hr
Issued by
NWS New York, NY
Area
Counties, with a storm outline in the text

Counties Bergen County, NJ, Bronx County, NY, New York County, NY

The radar

The Brookhaven radar (KOKX), 94 km from the middle of the area, began a volume at 19:42 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 12:00Z, 7.7 hours before the alert went out and 94 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 2002-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2022 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 12:00Z on 2002-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
2022 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
1009 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
74 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KOKX 161939
FFWOKX
NJC003-NYC005-061-162145-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
339 PM EDT FRI AUG 16 2002

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL BERGEN COUNTY IN NORTHEAST NEW JERSEY
  THIS INCLUDES THE CITIES OF...HACKENSACK...BERGENFIELD
  BRONX COUNTY IN SOUTHEAST NEW YORK
  THIS INCLUDES THE CITY OF TREMONT
  NORTHEASTERN NEW YORK COUNTY IN SOUTHEAST NEW YORK
  THIS INCLUDES THE CITY OF MOTT HAVEN

* UNTIL 545 PM EDT

* AT 336 PM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OVER RIVERDALE...OR ABOUT 2 MILES NORTHWEST OF EAST TREMONT...
  MOVING NORTHEAST AT 10 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR...
  3 MILES NORTHWEST OF CO-OP CITY AT 350 PM EDT

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

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

LAT...LON 4088 7413 4077 7393 4090 7378 4098 7393
1 follow-up statement
000 
WGUS71 KOKX 162149
FFSOKX
NJC003-NYC005-061-162245-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE
545 PM EDT FRI AUG 16 2002

...THE FLASH FLOOD WARNING FOR BERGEN...MANHATTAN AND BRONX COUNTIES 
WAS ALLOWED TO EXPIRE AT 545 PM EDT...

RAIN HAS ENDED ACROSS THE REGION. FLASH FLOODING HAS BEEN REPORTED 
ON MANY ROAD WAYS IN THE VICINITY OF THE GEORGE WASHINGTON BRIDGE. 
THESE FLOOD WATERS WILL SLOWLY SUBSIDE OVER THE NEXT HOUR. 

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.

JST

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 2:34 PM EDTSevere Thunderstorm WarningOKXBergen41 min
Aug 16, 2:40 PM EDTSevere Thunderstorm WarningOKXBergen35 min
Aug 16, 3:17 PM EDTSevere Thunderstorm WarningOKXBergen43 min
Aug 16, 2:18 PM EDTSevere Thunderstorm WarningOKXOrange57 min
Aug 16, 3:24 PM EDTSpecial Marine WarningOKX66 min
Aug 16, 3:54 PM EDTSevere Thunderstorm WarningOKXNassau51 min
Aug 16, 4:07 PM EDTSpecial Marine WarningOKX83 min
Aug 16, 4:17 PM EDTSevere Thunderstorm WarningOKXWestchester43 min
Aug 16, 4:31 PM EDTSevere Thunderstorm WarningOKXNassau, Queens44 min
Aug 16, 4:51 PM EDTFlash Flood WarningOKXNassau, Queens114 min

Nearby

Flash Flood Warnings in New York, 2002Flash Flood Warnings in New Jersey, 2002Every flash flood warning in 2002

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.