Alert archive / Pennsylvania / Tornado Warnings in 1995

Tornado Warning 6, NWS Philadelphia/Mount Holly

May 29, 1995Montgomery County, Pennsylvania

NWS Philadelphia/Mount Holly issued this tornado warning at May 29, 1995, 5:45 PM EDT for Montgomery County, Pennsylvania. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
May 29, 1995, 5:45 PM EDT (21:45 UTC)
Expired
May 29, 1995, 6:15 PM EDT
In force
30 min
Issued by
NWS Philadelphia/Mount Holly
Area
Whole counties

County Montgomery County, PA

The radar

The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 21:48 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.8 hours before the alert went out and 224 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, Washington/Dulle, VA at 12:00Z on 1995-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 69 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, Washington/Dulle, VA at 12:00Z on 1995-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 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
69 J/kg
Mixed-layer CIN
-204 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
249 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 292146 RRA
TORPHL
PAC091-292215-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PHILADELPHIA/MOUNT HOLLY NJ
545 PM EDT MON MAY 29 1995
 
THE NATIONAL WEATHER SERVICE IN PHILADELPHIA/MOUNT HOLLY HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  620 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN  PENNSYLVANIA
 
   ...NORTHERN MONTGOMERY COUNTY
 
THE NATIONAL WEATHER SERVICE IS EXTENDING THE TORNADO WARNING INTO
MONTGOMERY COUNTY.  A SEVERE THUNDERSTORM HAS PRODUCED BASEBALL
SIZE HAIL IN COVENTRY IN CHESTER COUNTY.  A THUNDERSTORM CAPABLE
OF PRODUCING BASEBALL SIZE HAIL IN THE PHILADELPHIA AREA IS
LIKELY TO PRODUCE A TORNADO.
 
THIS STORM IS MOVING EAST AT 40 MILES AN HOUR AND WILL MOVE CLOSE
TO COLLEGEVILLE...PERKIOMEN AND SALFORD.
 
DO NOT USE YOUR CAR TO TRY TO OUTRUN THIS TORNADO.  CARS ARE
EASILY TOSSED ABOUT BY TORNADO WINDS.  LEAVE THE CAR AND GO TO A
STRONG BUILDING.  IF NO STRUCTURE IS NEARBY...SEEK SHELTER" IN A
DITCH OR LOW SPOT...BUT BE ALERT FOR POSSIBLE FLOOD WATERS FROM
THE HEAVY RAINS.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 5:15 PM EDTTornado WarningPHIBerks, Chester30 min
May 29, 6:13 PM EDTTornado WarningPHIChester47 min
May 29, 6:24 PM EDTSevere Thunderstorm WarningPHIBucks, Montgomery, Philadelphia36 min
May 29, 7:05 PM EDTTornado WarningPHIDelaware, Montgomery, Philadelphia25 min

Nearby

Tornado Warnings in Pennsylvania, 1995Every tornado warning in 1995Tornadoes 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; radar from the NEXRAD Level II archive.