Alert archive / New Jersey / Flash Flood Warnings in 2000

Flash Flood Warning 33, NWS Philadelphia/Mount Holly

August 12, 2000Morris County, Sussex County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 12, 2000, 10:50 AM EDT for Morris County, Sussex County, New Jersey. It was in force for 3 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
Aug 12, 2000, 10:50 AM EDT (14:50 UTC)
Expired
Aug 12, 2000, 1:45 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Morris County, NJ, Sussex County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 2.8 hours before the alert went out and 148 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 2000-08-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 131 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 2000-08-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
131 J/kg
Mixed-layer CIN
-95 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
85 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 KPHI 121456 COR
FFWPHL
NJC027-037-121745-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION
SEVERE FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1050 AM EDT SAT AUG 12 2000

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE FLASH FLOOD WARNING FOR...
  WESTERN MORRIS COUNTY IN NORTHERN NEW JERSEY
  SOUTHEASTERN SUSSEX COUNTY IN NORTHWEST NEW JERSEY

* UNTIL 145 PM EDT.

* AT 1049 AM EDT...WEATHER SERVICE RADAR INDICATED...WEATHER         
  SERVICE DOPPLER RADAR STILL INDICATED SOME NEARLY STATIONARY       
  THUNDERSTORMS AROUND THE SUSSEX/MORRIS COUNTY LINE. STORM TOTAL    
  ESTIMATES HAVE REACHED AS HIGH AS 6 INCHES IN JEFFERSON TOWNSHIP   
  IN MORRIS COUNTY AND 5 INCHES IN SPARTA AND HARDYSTON TOWNSHIPS IN 
  SUSSEX COUNTY. A GROUND TRUTH REPORT OF 3.8 INCHES WAS RECEIVED 
  FROM SPARTA MOUNTAIN...WITH NEARLY TWO INCHES IN ONE HOUR. THESE
  STORMS SHOW LITTLE MOVEMENT...BUT ARE NOW WEAKENING.
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. 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.

EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL 
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE 
BANKS OF CREEKS AND STREAMS. THE HEAVY RAINS COULD ALSO TRIGGER ROCK 
AND MUDSLIDES IN STEEP TERRAIN.

NEVER DRIVE AROUND BARRICADES. NEVER ATTEMPT TO DRIVE THROUGH 
FLOODED ROADWAYS...THE ROAD MIGHT NOT EVEN BE THERE. 

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

$$
LAT...LON 4114 7453 4098 7448 4080 7453 4088 7477
          4114 7476

TFG/CORRECTED TO CHANGE CENTRApL TO WESTERN

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 12, 8:58 AM EDTFlash Flood WarningPHIMonmouth14 hr
Aug 12, 9:32 AM EDTFlash Flood WarningPHIMorris, Sussex118 min
Aug 12, 12:07 PM EDTFlash Flood WarningPHIHunterdon, Warren6 hr
Aug 12, 1:03 PM EDTFlash Flood WarningPHIMorris, Sussex6 hr
Aug 12, 1:21 PM EDTFlash Flood WarningPHIHunterdon6 hr
Aug 12, 2:22 PM EDTFlash Flood WarningPHISomerset6 hr
Aug 12, 4:00 PM EDTFlash Flood WarningPHIBurlington6 hr
Aug 12, 4:30 PM EDTFlash Flood WarningPHIMiddlesex4 hr

Nearby

Flash Flood Warnings in New Jersey, 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.