Alert archive / New Jersey / Flash Flood Warnings in 2000

Flash Flood Warning 4, NWS New York, NY

April 23, 2000Passaic County, New Jersey; Orange County, New York

NWS New York, NY issued this flash flood warning at Apr 23, 2000, 3:15 PM EDT for Passaic County, New Jersey; Orange 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
Apr 23, 2000, 3:15 PM EDT (19:15 UTC)
Expired
Apr 23, 2000, 5:30 PM EDT
In force
2 hr
Issued by
NWS New York, NY
Area
Whole counties

Counties Passaic County, NJ, Orange County, NY

The radar

The Brookhaven radar (KOKX), 127 km from the middle of the area, began a volume at 19:16 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, 7.3 hours before the alert went out and 127 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 2000-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 2000-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.19395878Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
480 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
106 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 231920
FFWOKX
NJC031-NYC071-232130-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
315 PM EDT SUN APR 23 2000

THE NATIONAL WEATHER SERVICE IN UPTON NY HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN PASSAIC COUNTY IN NORTHEAST NEW JERSEY
  SOUTHEASTERN ORANGE COUNTY IN SOUTHEAST NEW YORK

* UNTIL 530 PM EDT

* AT 315 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT VERY HEAVY RAIN WAS FALLING OVER SOUTHEASTERN ORANGE COUNTY.
THIS AREA WILL MOVE SOUTHWARD INTO PASSAIC COUNTY SHORTLY. RAINFALL
RATES BETWEEN 1 1/2 AND NEARLY 2 INCHES PER HOUR WERE BEING
INDICATED BY RADAR. EARLIER IN THE DAY THIS SAME AREA EXPERIENCED
HEAVY RAIN SO THE GROUND IS COMPLETELY SATURATED.

*

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS...STREETS AND UNDERPASSES.

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
OFFICfE IN UPTON NY.

LAT...LON 4134 7410 4099 7429 4106 7451 4140 7429

Nearby

Flash Flood Warnings in New Jersey, 2000Flash 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; radar from the NEXRAD Level II archive.