Alert archive / New Jersey / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 115, NWS Philadelphia/Mount Holly

August 16, 1997Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 16, 1997, 5:59 PM EDT for Burlington County, Ocean 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: Aug 16, 1997, 5:59 PM EDT (21:59 UTC)
Expired: Aug 16, 1997, 6:45 PM EDT
In force: 46 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

Counties Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 9 km from the middle of the area, began a volume at 22:01 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 12:00Z, 10.0 hours before the alert went out and 175 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: 1064 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPHL 162159 RRA
SVRPHL
NJC005-029-NJZ501-162245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
559 PM EDT SAT AUG 16 1997

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM EDT FOR PEOPLE IN
THE FOLLOWING LOCATION...

IN  NEW JERSEY

   ...NORTHERN BURLINGTON COUNTY
   ...NORTHERN OCEAN COUNTY...INCLUDING THE ADJACENT COASTAL WATERS
 
AT 552 PM...DOPPLER RADAR SHOWED A LINE OF THUNDERSTORMS FROM
SOUTHEAST PENNSYLVANIA...THROUGH MERCER AND MONMOUTH COUNTIES
OF NEW JERSEY. THESE STORMS WERE MOVING RAPIDLY TO THE EAST AND
HAVE HAD A HISTORY OF DOWNING TREES AND POWER LINES. THERE HAVE BEEN
SEVERAL REPORTS OF TREES FALLING ON PEDESTRIANS INCLUDING IN THEIR
AUTOMOBILES.

THESE ARE DANGEROUS STORMS. MOVE INSIDE A STRONG BUILDING AND DO
NOT STAND NEAR WINDOWS. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM
ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

MARINERS SHOULD SEEK SHELTER IF POSSIBLE.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATIONS...OR YOUR CABLE
TELEVISION OUTLET.

/JAE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 4:25 PM EDT	Severe Thunderstorm Warning	PHI	Warren	50 min
Aug 16, 4:32 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	48 min
Aug 16, 4:47 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Morris	48 min
Aug 16, 5:02 PM EDT	Severe Thunderstorm Warning	PHI	Hunterdon, Somerset	63 min
Aug 16, 5:41 PM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex, Monmouth	49 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; radar from the NEXRAD Level II archive.