Alert archive / Pennsylvania / Flash Flood Warnings in 2004
Flash Flood Warning 83, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 18, 2004, 6:09 AM EDT for 4 counties in Pennsylvania; Warren County, New Jersey. It was in force for 4 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
- Sep 18, 2004, 6:09 AM EDT (10:09 UTC)
- Expired
- Sep 18, 2004, 10:00 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
Counties Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 124 km from the middle of the area, began a volume at 10:09 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 00:00Z, 10.2 hours before the alert went out and 216 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 678 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 130 m²/s²
- 0-3 km storm-relative helicity
- 180 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 181009
FFWPHI
NJC041-PAC025-077-089-095-181400-
/X.NEW.KPHI.FF.W.0003.040918T1005Z-040918T1400Z/
/0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
609 AM EDT SAT SEP 18 2004
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
LEHIGH COUNTY IN EASTERN PENNSYLVANIA
NORTHAMPTON COUNTY IN EASTERN PENNSYLVANIA
CARBON COUNTY IN NORTHEAST PENNSYLVANIA
MONROE COUNTY IN NORTHEAST PENNSYLVANIA
WARREN COUNTY IN NORTHWEST NEW JERSEY
* UNTIL 1000 AM EDT
* AT 600 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM PERSISTENT HEAVY RAIN AND THUNDERSTORMS OVER THE
WARNED AREA. RADAR HAS ESTIMATED BETWEEN 2 AND 4 INCHES OF RAIN IN
THE PAST 6 HOURS. LAW ENFORCEMENT OFFICIALS REPORTED STREET FLOODING
IN THE BETHLEHEM AREA IN NORTHAMPTON COUNTY.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WIND GAP...
WEATHERLY...SCHNECKSVILLE...POCONO PINES...PALMERTON...OLD
ORCHARD...NORTHAMPTON...NESQUEHONING...NAZARETH...MOUNTAINHOME...
MOUNT POCONO...LEHIGHTON...JIM THORPE...HELLERTOWN...EMMAUS...
EASTON...EAST STROUDSBURG...EAST BANGOR...BRODHEADSVILLE...
BELFAST...BATH...ANCIENT OAKS...WASHINGTON...OXFORD...BLAIRSTOWN
AND BELVIDERE.
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.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY...OR AROUND BARRICADES. 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.
LAT...LON 4063 7525 4047 7551 4059 7570 4067 7582
4077 7576 4093 7594 4123 7524 4091 7480
4071 7501
$$
JRPThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 3:29 AM EDT | Severe Thunderstorm Warning | PHI | Chester | 31 min |
| Sep 18, 7:07 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 4 hr |
| Sep 18, 9:48 AM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Sep 18, 10:31 AM EDT | Flash Flood Warning | PHI | Chester, Delaware | 3 hr |
| Sep 18, 10:57 AM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 3 hr |
| Sep 18, 1:45 PM EDT | Flash Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery | 2 hr |
| Sep 18, 2:00 PM EDT | Flash Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Sep 18, 6:22 AM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 38 min |
| Sep 18, 6:46 AM EDT | Flash Flood Warning | PHI | Sussex | 3 hr |
| Sep 18, 7:04 AM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 86 min |
| Sep 18, 7:37 AM EDT | Flash Flood Warning | PHI | Morris | 4 hr |
Nearby
Flash Flood Warnings in Pennsylvania, 2004Flash 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.