Alert archive / New Jersey / Flash Flood Warnings in 2004
Flash Flood Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 23, 2004, 5:25 PM EDT for Hunterdon County, New Jersey. 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 outline as issued.
The facts
- Issued
- Jul 23, 2004, 5:25 PM EDT (21:25 UTC)
- Expired
- Jul 23, 2004, 7:30 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Hunterdon County, NJ
The radar
The Philadelphia radar (KDIX), 85 km from the middle of the area, began a volume at 21:28 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, 9.4 hours before the alert went out and 173 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 232128 FFWPHI NJC019-232330- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 525 PM EDT FRI JUL 23 2004 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS CONTINUED A * FLASH FLOOD WARNING FOR... HUNTERDON COUNTY IN NORTHWEST NEW JERSEY * UNTIL 730 PM EDT * AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED BETWEEN 4 AND 5 INCHES OF RAIN HAS FALLEN OVER NORTHEASTERN HUNTERDON COUNTY IN THE VICINITY OF READINGTON TOWNSHIP AND WHITE HOUSE STATION. RAIN IS STILL FALLING OVER THE AREA, AND PRECIPITATION IS EXPECTED TO CONTINUE INTO THE EVENING HOURS. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. 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 4074 7486 4061 7509 4040 7491 4058 7474 $$ 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, 5:01 PM EDT | Flash Flood Warning | PHI | Mercer | 3 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.