Alert archive / New Jersey / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 69, NWS Philadelphia/Mount Holly

July 17, 1995Mercer County, New Jersey; Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 17, 1995, 11:05 PM EDT for Mercer County, New Jersey; Bucks County, Pennsylvania. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Jul 17, 1995, 11:05 PM EDT (03:05 UTC)
Expired
Jul 18, 1995, 12:00 AM EDT
In force
55 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

Counties Mercer County, NJ, Bucks County, PA

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.1 hours before the alert went out and 183 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.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 1995-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 42 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 1995-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
42 J/kg
Mixed-layer CIN
-181 J/kg
Mixed-layer LCL
772 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPHL 180306 RRA
SVRPHL
NJC021-PAC017-180400-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
1105 PM EDT MON JUL 17 1995
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL MIDNIGHT EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  NEW JERSEY
 
   ...MERCER COUNTY
 
IN  PENNSYLVANIA
 
   ...SOUTHERN BUCKS COUNTY
 
AT 11PM NATIONAL WEATHER SERVICE DOPPLER RADAR IN MOUNT HOLLY
WAS SHOWING A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM JUST
NORTH OF DOYLESTOWN SOUTH TO WARMINSTER.  THESE THUNDERSTORMS
WERE MOVING TO THE EAST AT APPROXIMATELY 25 MPH AND SHOULD ENTER
MERCER COUNTY NJ BY 1130 PM.
 
 
SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 58 MILES PER HOUR...
LARGE HAIL...AND DEADLY LIGHTNING.  IF THREATENING WEATHER SUDDENLY
APPROACHES YOU...BOATERS SHOULD BE PREPARED TO MOVE TO SAFE HARBOR.
IF CAUGHT OUT ON THE OPEN WATER...STAY BELOW DECK...IF POSSIBLE...AND
AWAY FROM UNGROUNDED METAL OBJECTS.
 
 
MIKETTA/KRAUS

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 17, 8:25 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May50 min
Jul 17, 9:06 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington29 min
Jul 18, 1:15 AM EDTFlash Flood WarningPHIHunterdon105 min
Jul 17, 8:44 PM EDTSevere Thunderstorm WarningPHIBucks46 min
Jul 17, 9:13 PM EDTSevere Thunderstorm WarningPHIBerks, Lehigh32 min
Jul 18, 1:55 AM EDTFlash Flood WarningPHIBucks6 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 1995Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning in 1995

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.