Alert archive / New Jersey / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 20, NWS Philadelphia/Mount Holly

May 1, 1997Middlesex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 1, 1997, 6:54 PM EDT for Middlesex County, New Jersey. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 1, 1997, 6:54 PM EDT (22:54 UTC)
Expired: May 1, 1997, 7:40 PM EDT
In force: 46 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Middlesex County, NJ

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 1, 4:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 10.9 hours before the alert went out and 139 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1425 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 192 m²/s²
0-3 km storm-relative helicity: 174 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 012255 RRA
SVRPHL
NJC005-023-025-029-012340-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
654 PM EDT THU MAY 1 1997

THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY NJ HAS
ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 740 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN  NEW JERSEY

   ...MIDDLESEX COUNTY
   ...MONMOUTH COUNTY
   ...SOUTHERN BURLINGTON COUNTY
   ...OCEAN COUNTY
 
AT 650 PM NATIONAL WEATHER SERVICE DOPPLER RADAR WAS INDICATING A
LINE OF SEVERE THUNDERSTORMS EXTENDING FROM MIDDLESEX COUNTY
SOUTHWEST TO EASTERN BURLINGTON COUNTY.  THIS LINE IS MOVING TO THE
EAST AT APPROXIMATELY 35 MPH.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR THE AREA.

IF YOU ARE IN THE PATH OF THESE STORMS...SEEK SHELTER NOW.  AFTER THE
STORM HAS PASSED...REPORT ANY SEVERE WEATHER OR FLOODING TO YOUR
LOCAL LAW ENFORCEMENT AGENCY AND HAVE THEM RELAY YOUR SEVERE WEATHER
REPORT ON TO THE NATIONAL WEATHER SERVICE.

SEVERE THUNDERSTORMS CONTAIN WINDS GREATER THAN 58 MILES AN HOUR...
DIME SIZE HAIL OR LARGER...VERY HEAVY RAINS AND DEADLY LIGHTNING.

STAY TUNED TO NOAA WEATHER RADIO...THE VOICE OF THE NATIONAL WEATHER
SERVICE...OR TO COMMERCIAL RADIO OR TELEVISION STATIONS FOR THE
LATEST STORM INFORMATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 5:37 PM EDT	Severe Thunderstorm Warning	PHI	Sussex, Warren	48 min
May 1, 6:09 PM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester	46 min
May 1, 6:09 PM EDT	Severe Thunderstorm Warning	PHI	Salem	46 min
May 1, 6:30 PM EDT	Severe Thunderstorm Warning	PHI	Burlington	40 min
May 1, 6:49 PM EDT	Severe Thunderstorm Warning	PHI	Mercer	51 min
May 1, 6:54 PM EDT	Severe Thunderstorm Warning	PHI	Burlington, Monmouth, Ocean	46 min
May 1, 7:05 PM EDT	Severe Thunderstorm Warning	PHI	Atlantic	45 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1997 Every severe thunderstorm warning in 1997

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.