Alert archive / New Jersey / Flash Flood Warnings in 2001

Flash Flood Warning 40, NWS Philadelphia/Mount Holly

August 11, 2001Atlantic County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 11, 2001, 7:35 AM EDT for Atlantic 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 11, 2001, 7:35 AM EDT (11:35 UTC)
Expired
Aug 11, 2001, 10:30 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Atlantic County, NJ

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 11.6 hours before the alert went out and 184 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, Wallops Is Stn, VA at 00:00Z on 2001-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4016 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, Wallops Is Stn, VA at 00:00Z on 2001-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
4016 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
660 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
28 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 111138
FFWPHI
NJC001-111430-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
735 AM EDT SAT AUG 11 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY

* UNTIL 1030 AM EDT.

* AT 724 AM EDT...WEATHER SERVICE RADAR INDICATED THAT 4 TO 5 INCHES
  OF RAIN HAS FALLEN DURING THE PAST THREE HOURS IN EASTERN 
  ATLANTIC COUNTY...ESPECIALLY ALONG THE GARDEN STATE PARKWAY IN
  EGG HARBOR TOWNSHIP. DOPPLER RADAR INDICATED THAT ANOTHER
  THUNDERSTORM WITH HEAVY RAIN WILL MOVE ACROSS EASTERN ATLANTIC
  COUNTY AND   WILL DROP AN ADDITIONAL 1 TO 3 INCHES OF 
  RAIN...POSSIBLY OVER THE SAME AREAS THAT HAVE ALREADY RECEIVED THE 
  HEAVY RAIN.


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.

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

$$

TFG/JAQ

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 11:20 AM EDTFlash Flood WarningPHIMercer3 hr

Nearby

Flash Flood Warnings in New Jersey, 2001Every flash flood warning in 2001

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.