Alert archive / New Jersey / Flash Flood Warnings in 1990

Flash Flood Warning 20, NWS New York, NY

December 4, 1990Bergen County, New Jersey; Westchester County, New York

NWS New York, NY issued this flash flood warning at Dec 4, 1990, 5:20 AM EST for Bergen County, New Jersey; Westchester County, New York. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
Dec 4, 1990, 5:20 AM EST (10:20 UTC)
Expired
Dec 4, 1990, 8:00 AM EST
In force
3 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Bergen County, NJ, Westchester County, NY

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Albany, NY (KALB), launched 00:00Z, 10.3 hours before the alert went out and 182 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, Albany, NY at 00:00Z on 1990-12-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Albany, NY at 00:00Z on 1990-12-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 589 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
670 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
589 m²/s²
0-3 km storm-relative helicity
1634 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 
TTAA00 KEWR 041043 COR
FFWEWR
NJC003-041300-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE NEWARK NJ
520 AM EST TUE DEC 04 1990

THE NATIONAL WEATHER SERVICE HAS ISSUED A FLOOD WARNING EFFECTIVE
UNTIL 800 AM EST FOR PEOPLE IN THE FOLLOWING COUNTIES OF

NORTHEAST NEW JERSEY...BERGEN.

HEAVY RAIN ALTHOUGH TAPERING OFF AT THE PRESENT TIME HAS CAUSED THE
HO-HO-KUS BROOK TO OVERFLOW ITS BANKS.

OTHER SMALL STREAMS IN BERGEN COUNTY ARE RESPONDING FROM THE HEAVY
OVERNIGHT RAINS OF FROM TWO AND ONE HALF INCHES TO NEAR THREE INCHES.
THEREFORE A FLOOD WARNING IS IN EFFECT UNTIL 800 AM.

REMEMBER...A FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING.

IF YOU GET ANY INDICATION THAT FLOOD WATERS ARE APPROACHING...MOVE TO
HIGHER GROUND IMMEDIATELY. DO NOT DRIVE THROUGH FLOODED AREAS.

CORRECTED TO ADD EXPIRATION TIME TO HEADER.

WOODWORTH
1 follow-up statement
000 
TTAA00 KNYC 041024 COR
FFWNYC
NYC119-041300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
520 AM EST TUE DEC 4 1990...COR DAY IN LINE 2

THE NATIONAL WEATHER SERVICE HAS ISSUED A FL

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 4, 6:00 AM ESTFlash Flood WarningOKXPassaic, Sussex2 hr
Dec 4, 7:30 AM ESTFlash Flood WarningOKXWestchester3 hr
Dec 4, 10:00 AM ESTFlash Flood WarningOKXWestchester5 hr

Nearby

Flash Flood Warnings in New Jersey, 1990Flash Flood Warnings in New York, 1990Every flash flood warning in 1990

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.