Alert archive / New Jersey / Flash Flood Warnings in 2004
Flash Flood Warning 32, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 23, 2004, 5:01 PM EDT for Mercer 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 outline as issued.
The facts
- Issued
- Jul 23, 2004, 5:01 PM EDT (21:01 UTC)
- Expired
- Jul 23, 2004, 8:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Mercer County, NJ
The radar
The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 21:01 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, 9.0 hours before the alert went out and 171 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.
- Mixed-layer CAPE
- 78 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KPHI 232105 FFWPHI NJC021-240000- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 501 PM EDT FRI JUL 23 2004 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * FLASH FLOOD WARNING FOR... MERCER COUNTY IN CENTRAL NEW JERSEY * UNTIL 800 PM EDT * AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED APPROXIMATELY 3 INCHES OF RAIN HAS FALLEN OVER PARTS OF MERCER COUNTY SINCE THE RAIN BEGAN EARLY THIS AFTERNOON. RADAR INDICATES MORE RAIN IS ON THE WAY. WATERSHEDS MOST SUSCEPTIBLE TO FLOODING ARE THE STONY BROOK AND JACOBS CREEK. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES... DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 4033 7486 4018 7471 4024 7453 4038 7477 $$ JJM
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 2:32 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 118 min |
| Jul 23, 3:31 PM EDT | Flash Flood Warning | PHI | Hunterdon | 119 min |
| Jul 23, 4:25 PM EDT | Flash Flood Warning | PHI | Morris, Somerset | 3 hr |
| Jul 23, 5:25 PM EDT | Flash Flood Warning | PHI | Hunterdon | 2 hr |
| Jul 23, 7:20 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset | 4 hr |
Nearby
Flash Flood Warnings in New Jersey, 2004Every flash flood warning in 2004
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.