Alert archive / New Jersey / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 99, NWS Philadelphia/Mount Holly

August 14, 1994Middlesex County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 14, 1994, 3:31 PM EDT for Middlesex County, New Jersey. It was in force for 29 min.

The area

The counties it named.

The facts

Issued
Aug 14, 1994, 3:31 PM EDT (19:31 UTC)
Expired
Aug 14, 1994, 4:00 PM EDT
In force
29 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Middlesex County, NJ

The nearest sounding before it

Atlantic City In, NJ (KACY), launched 12:00Z, 7.5 hours before the alert went out and 110 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, Atlantic City In, NJ at 12:00Z on 1994-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 243 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, Atlantic City In, NJ at 12:00Z on 1994-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 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
243 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
1037 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KNYC 141934 RRA
SVRNYC
NJC023-142000-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NEW YORK NY
331 PM EDT SUN AUG 14 1994
 
THE NATIONAL WEATHER SERVICE IN NEW YORK HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  400 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST NEW JERSEY
 
   ...SOUTHERN MIDDLESEX COUNTY
 
...AND ADJACENT COASTAL WATERS.
 
 
AT 330 PM DOPPLER RADAR SHOWED A SEVERE THUNDERSTORM OVER EASTERN MERCER
COUNTY NEW JERSEY ABOUT TO MOVE INTO SOUTHERN MIDDLESEX COUNTY. POWER
OUTAGES HAVE OCCURRED OVER MERCER COUNTY AS THIS THUNDERSTORM PASSED
THROUGH. TREE LIMBS HAVE ALSO BEEN KNOCKED DOWN AS WINDS HAVE APPROACHED
50 MILES AN HOUR. THE THUNDERSTORM WAS MOVING TOWARD THE EAST NORTHEAST
AT ABOUT 35 MILES AN HOUR. IT WILL MOVE ACROSS SOUTHERN MIDDLESEX COUNTY
IN THE NEXT 30 MINUTES.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.
 
EY
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 3:20 PM EDTSevere Thunderstorm WarningPHIMercer25 min
Aug 14, 3:40 PM EDTSevere Thunderstorm WarningPHIBurlington, Mercer50 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 1994Every severe thunderstorm warning in 1994

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.