Alert archive / New Jersey / Flash Flood Warnings in 1989
Flash Flood Warning 23, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 5, 1989, 9:02 AM EDT for Burlington County, Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1989, 9:02 AM EDT (13:02 UTC)
- Expired
- Jul 5, 1989, 12:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 12:00Z, 1.0 hours before the alert went out and 84 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
- 480 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 544 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 185 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KPHL 051302
FFWPHL
NJC005-007-015-021-PAC017-051600-
BULLETIN - EBS ACTIVATION REQUESTED
SMALL STREAM AND URBAN FLOOD WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA PA
902 AM EDT WED JUL 5 1989
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA HAS ISSUED A
SMALL STREAM AND URBAN FLOOD WARNING EFFECTIVE UNTIL NOON EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN SOUTH NEW JERSEY
...WESTERN BURLINGTON...WESTERN CAMDEN...WESTERN GLOUCESTER
IN WEST CENTRAL NEW JERSEY
...MERCER
IN SOUTHEAST PENNSYLVANIA
...EASTERN BUCKS
HEAVY RAINS ARE FALLING OVER THE AREA. REPORTS OF 5 INCHES OR MORE OF
RAIN HAS FALLEN ACROSS PORTIONS OF MARYLAND AND NORTHERN DELAWARE
SINCE MIDNIGHT. RAINFALL AMOUNTS ACROSS THE DELAWARE VALLEY SO FAR
THIS MORNING RANGE FROM 1 TO 3 INCHES SINCE 4 AM.
IF YOU ARE IN THE WARNED COUNTY IN AN AREA SUBJECT TO FLOODING
MOVE TO HIGHER GROUND. DO NOT DRIVE THROUGH FLOOD WATERS.
CLIMBING ATOP YOUR STALLED VEHICLE WILL NOT PREVENT YOU FROM
BEING SWEPT INTO DANGEROUS STREAM CONDITIONS AS WATER LEVELS RISE.
JWHThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 9:02 AM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 3 hr |
| Jul 5, 10:04 AM EDT | Flash Flood Warning | PHI | Salem | 4 hr |
| Jul 5, 11:00 AM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 5 hr |
| Jul 5, 11:00 AM EDT | Flash Flood Warning | PHI | Camden, Gloucester, Salem | 5 hr |
| Jul 5, 8:38 AM EDT | Flash Flood Warning | PHI | Chester, Delaware | 3 hr |
| Jul 5, 8:38 AM EDT | Flash Flood Warning | PHI | Philadelphia | 3 hr |
| Jul 5, 10:41 AM EDT | Flash Flood Warning | PHI | Montgomery | 4 hr |
| Jul 5, 11:00 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 5 hr |
Nearby
Flash Flood Warnings in New Jersey, 1989Flash Flood Warnings in Pennsylvania, 1989Every flash flood warning in 1989
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.