Alert archive / New Jersey / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 41, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 18, 1987, 8:36 PM EDT for Atlantic County, Cape May County, New Jersey. It was in force for 64 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Sep 18, 1987, 8:36 PM EDT (00:36 UTC)
- Expired
- Sep 18, 1987, 9:40 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Whole counties
Counties Atlantic County, NJ, Cape May County, NJ
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 18, 9:18 PM EDT | Thunderstorm Wind 0 | Atlantic, NJ | |
| Sep 18, 9:20 PM EDT | Thunderstorm Wind 0 | Cape May, NJ | |
| Sep 18, 9:25 PM EDT | Thunderstorm Wind 0 | Cape May, NJ |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Atlantic City In, NJ (KACY), launched 00:00Z, 0.6 hours before the alert went out and 28 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
- 1429 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 685 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KACY 190036
SVRACY
NJC001-009-190140-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTIC CITY NJ
836 PM EDT FRI SEP 18 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 940 PM EDT FOR THE FOLLOWING COUNTIES OF
SOUTHERN NEW JERSEY... ATLANTIC... NORTHERN CAPE MAY
...AND ADJACENT COASTAL WATERS.
THE ATLANTIC CITY RADAR SHOWED SEVERE THUNDERSTORMS OVER ATLANTIC
AND NORTHERN CAPE MAY COUNTIES OF NEW JERSEY. ONE LOCATED 5 MILES
NORTH OF EGG HARBOR CITY AND ONE JUST ENTERING NORTHERN CAPE MAY
COUNTY. RADAR INDICATES HAIL POSSIBLE WITH THESE THUNDERSTORMS.
MOVMENT WAS EAST AT 20 MILES AN HOUR.
THIS IS A DANGEROUS STORM AND PEOPLE IN THE WARNED AREA SHOULD
PREPARE FOR STRONG DAMAGING WINDS...LARGE HAIL...VwERY HEAVY RAIN
AND LIGHTNING. SHOULD THE STORM APPROACH YOU...SEEK IMMEDIATE
SHELTER. MOBILE TRAILERS ARE MOST VULNERABLE TO HIGH WINDS AND
SHOULD BE AVOIDED.
RWKNearby
Severe Thunderstorm Warnings in New Jersey, 1987Every severe thunderstorm warning in 1987
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.