Alert archive / New Jersey / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 45, NWS Philadelphia/Mount Holly

May 31, 1998Morris County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 1998, 11:24 PM EDT for Morris County, New Jersey. It was in force for 31 min. 1 report 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: May 31, 1998, 11:24 PM EDT (03:24 UTC)
Expired: May 31, 1998, 11:55 PM EDT
In force: 31 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Morris County, NJ

What was reported inside it

Time	Report	Where	Remark
May 31, 11:32 PM EDT	Thunderstorm Wind 55	Lake Telemark, 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.

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 31, 10:00 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 3.4 hours before the alert went out and 141 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: 151 J/kg
Mixed-layer CIN: -348 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 233 m²/s²
0-3 km storm-relative helicity: 319 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.

826 
WUUS1 KPHL 010326 RRA
SVRPHL
NJC027-010355-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1124 PM EDT SUN MAY 31 1998

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MORRIS COUNTY IN NEW JERSEY

* UNTIL 1155 PM EDT

* AT 1122 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR AND
  SPOTTER REPORTS INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTHWEST
  OF DOVER MOVING EAST NORTHEAST AT 45 MPH. TREES WERE REPORTED
  DOWN IN FAR HILLS SOMERSET COUNTY.

* THE SEVERE THUNDERSTORM IS EXPECTED TO BE NEAR...
  BOONTON AT 1126 PM EDT
  KINNELON AT 1130 PM EDT
  BUTLER AT 1132 PM EDT
  LINCOLN PARK AT 1133 PM EDT
  PEQUANNOCK AT 1134 PM EDT
  POMPTON PLAINS AT 1134 PM EDT
  RIVERDALE AT 1135 PM EDT

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. SEVERE
THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING.

THIS IS A DANGEROUS STORM. 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.

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

KRAUS/DELISI


&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 31, 8:42 PM EDT	Tornado Warning	PHI	Sussex	33 min
May 31, 10:31 PM EDT	Severe Thunderstorm Warning	PHI	Sussex	19 min
May 31, 11:01 PM EDT	Severe Thunderstorm Warning	PHI	Warren	34 min
Jun 1, 1:10 AM EDT	Severe Thunderstorm Warning	PHI	Mercer, Middlesex	50 min
Jun 1, 1:15 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	35 min
Jun 1, 1:15 AM EDT	Severe Thunderstorm Warning	PHI	Camden	35 min
Jun 1, 1:26 AM EDT	Severe Thunderstorm Warning	PHI	Cumberland	49 min
Jun 1, 1:30 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington	65 min
Jun 1, 1:37 AM EDT	Severe Thunderstorm Warning	PHI	Monmouth, Ocean	63 min
Jun 1, 1:37 AM EDT	Severe Thunderstorm Warning	PHI	Middlesex	63 min
Jun 1, 1:42 AM EDT	Severe Thunderstorm Warning	PHI	Cape May	48 min
Jun 1, 1:44 AM EDT	Severe Thunderstorm Warning	PHI	Mercer	36 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1998 Every severe thunderstorm warning in 1998

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.