Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 211, NWS State College, PA

August 4, 1995Juniata County, Mifflin County, Snyder County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 4, 1995, 6:47 PM EDT for Juniata County, Mifflin County, Snyder County, Pennsylvania. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 4, 1995, 6:47 PM EDT (22:47 UTC)
Expired
Aug 4, 1995, 7:45 PM EDT
In force
58 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Juniata County, PA, Mifflin County, PA, Snyder County, PA

The radar

The State College radar (KCCX), 63 km from the middle of the area, began a volume at 22:48 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, 10.8 hours before the alert went out and 188 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 1995-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 457 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 1995-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 square meters per square second.1939Sfc1 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
457 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1179 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
76 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 KCTP 042248 RRA
SVRCTP
PAC067-087-109-042345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE STATE COLLEGE PA
647 PM EDT FRI AUG 4 1995
 
THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN  PENNSYLVANIA
 
   ...NORTHERN JUNIATA COUNTY...NORTHERN MIFFLIN COUNTY
   ...SNYDER COUNTY
 
AT 650 PM DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR ALFARATA IN
NORTHERN MIFFLIN COUNTY. THIS STORM WILL REACH MCCLURE IN SOUTHWEST
SNYDER COUNTY SHORTLY AFTER 7 PM.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...L&ARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
NICOSIA/LA CORTE/MICHAUD

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 1:28 PM EDT, 5 hours 19 minutes earlier.

Area forecast discussion, Aug 4, 1:28 PM EDT, 5 hours 19 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
130 PM EDT FRI AUG 4 1

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 4, 4:25 PM EDTSevere Thunderstorm WarningCTPWarren50 min
Aug 4, 5:11 PM EDTSevere Thunderstorm WarningCTPPotter, Tioga64 min
Aug 4, 6:08 PM EDTSevere Thunderstorm WarningCTPPotter, Tioga52 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning 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.