Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 233, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 31, 1995, 9:05 PM EDT for Clearfield County, Pennsylvania. It was in force for 10 min.
The area
The counties it named.
The facts
- Issued
- Aug 31, 1995, 9:05 PM EDT (01:05 UTC)
- Expired
- Aug 31, 1995, 9:15 PM EDT
- In force
- 10 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clearfield County, PA
The radar
The State College radar (KCCX), 40 km from the middle of the area, began a volume at 01:04 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
Pittsburgh, PA (KPIT), launched 00:00Z, 1.1 hours before the alert went out and 152 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.
- Mixed-layer CAPE
- 1164 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1504 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 117 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 010106 RRA SVRCTP PAC033-010115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 905 PM EDT THU AUG 31 1995 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...... IN PENNSYLVANIA ...SOUTHERN CLEARFIELD COUNTY AT 905 PM...WEATHER SERVICE DOPPLER RADAR IN STATE COLLEGE SHOWED A SEVERE THUNDERSTORM OVER SOUTHERN CVLEARFIELD COUNTY NEAR ANSONVILLE. THE STORM IS MOVING SOUTHEAST AT 35 MPH AND WILL MOVE TO NEAR HOUTZDALE BEFORE 915 PM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLVY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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 31, 2:06 PM EDT, 6 hours 59 minutes earlier.
Area forecast discussion, Aug 31, 2:06 PM EDT, 6 hours 59 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
205 PM EDT THU AUG 31 1995
SUGGESTIONS...
WSFO PHL... KEEP CHC POPS RW (PSBL TRW) THIS EVE NRN ZONES... LWR
SUS VLLY ALL NIGHT OR LATER IN THE EVE.
FRIDAY.... PARTLY SUNNY.
FRIDAY NIGHT... PARTLY CLOUDY NRN ZONES... MO CLR SUS
VLLY.
SAT... PC
WSFO PIT... CHC EVE RW/TRW THEN MO CLDY NRN MTNS/LAURELS PC
ELSEWHERE AFTER CHC RW/TRW THIS EVE
FRIDAY PARTLY SUNNY
FRI NGT/SAT PC.
DSCN...
VSBL SATL IMAGERY SHOWS LITTLE IN THE WAY OF CNVTN FORMING ALONG
SFC FRNT TO THE W ACRS FAR SRN ONT- NW OH AND SRN INDIANA. OH
APPEARS TO BE CAPPED OFF ON THE VSBL WITH LITTLE CU FORMING. WARMER
MID-LVL TEMPS (-5C AT 500 MB/9-10C 700 MB DAY 12Z RAOB) MAY BE THE
REASON FOR THIS CNVTVE INHIBITION. NGM/ETA GRIDS SHOW A ZONE OF
MID-LVL COLD AIR ADVECTION NR SFC FRNT WHICH SHUD ACT TO
DESTABILIZE AMS JUST AHEAD OF FRNT. THIS OVERLAP OF MID-LVL CAA AND
1000 MB MOIST AXIS AHEAD OF FRNT WILL CONT THRU F18 AS FRNT SLIDES
E INTO PA THIS EVE. CONTINUED HEATING (ESP OVR OH WHERE AMS IS
CAPPED) ALONG WITH FRNTL CONV CUD SET THINGS OFF IN A HURRY TO OUR
W LATER THIS AFTERN. THIS ACTVY WUD EVENTUALLY MOVE INTO PA THIS
EVE/OVERNIGHT. STILL WUD NOT GO HIGHER THAN CHC POPS. WUD CONT 30
CHC POPS RW WITH PSBL TRW THIS EVE WRN/NRN CTP ZONES AND LATER
TONIGHT SUS VLLY ZONES.
SFC FRNT REACHES FROM NYC-ROA S OF CTP FA BY 12Z. NGM/ETA ( NO AVN
GRIDS YET) INDICATE THAT THIS FRNT WILL BECOME MORE ANA-FRNT IN
NATURE FROM F12 TO F36. UPR LVL TROF WILL SHARPEN OVR OH VLLY IN
RESPONSE TO A S/W MOVG INTO BASE OF DVPLG LONG WV TROF. THIS WILL
PUT PA IN THE RIGHT REAR QUAD OF UPR LVL JET WHICH IS DOWNSTREAM
FROM TROF AXIS. THUS... A THERMALLY DIRECT CIRC WORKS ACRS REGION
FRI AS SEEN IN THE AGEO WINDS AND LOW-LVL Q-VEC/FRONTOGENISIS
FIELDS. DON/T THINK WE WILL SEE ANY POST-FRONTAL PRECIP IN PA GIVEN
STRG DRY ADVECTION BLO 700 MB. IN ADDITION... THE 850 MB QVEC
FIELDS SUGGEST PA WILL BE IN THE SUBSDC LOW-LVL AGEO BRANCH OF THIS
JET INDUCED CIRC. MOST OF THE UVV/S FRI APPEAR ABV 700 MB
SUGGESTIVE OF HIGHER LVL CLD CVR. THE 400 MB RH FIELDS ON BOTH
NGM/ETA SHOW PLENTY OF HI CLDS WILL MOVE ACRS REGION FRI SUGGESTING
A PARTLY SUNNY INSTEAD OF MO SUNNY DAY. ALSO IF ENUF SS DOES
OCCUR... SOME CU IS ALSO LIKELY GIVEN SOME MOISTURE LEFT OVER AT
1000 MB. THUS PS LOOKS GOOD ALL ZONES FRI.
FOR FRI NGT HIGH PRES... DECENT CAA AND CONTINUED WK SUBSDC/Q-VEC
DVRGE WILL PERSIST. THINK SKIES WILL BECOME MO CLR SUS VLLY AND
STAY PC IN NRN/WRN CTP ZONES GIVEN CONTINUED CAA AND SOME MOISTTURE
LEFT AT 850 MB ( SEEN ON NGM GRIDS).
SAT ALSO LOOKS NICE WITH HIGH PRESS ACRS REGION AND WK 700 MB
SUBSDC. AVN 60 HR FROM AFOS SHOWS A VORT AT 500 MB ACRS REGION SO
MAY SEE SOME HI CLOUDINESS. WUD GO PC.
PFT/S SENT AT 1215 PM.
NICOSIA
`In the hours before
Special weather statement, Aug 31, 8:29 PM EDT, 36 minutes before
PAZ005-006-010-011-010200- SPECIAL WEATHER STATEMENT - SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 829 PM EDT THU AUG 31 1995 PORTIONS OF THE SEVERE THUNDERSTORM WATCH HAVE BEEN DISCONTINUED AS OF 830 PM. IN NORTHWEST PENNSYLVANIA...THE COUNTIES DROPPED FROM THE SEVERE THUNDERSTORM WATCH INCLUDE... CAMERON... ELK... MCKEAN... AND POTTER. WITH THE PASSAGE OF A COLD FRONT THIS EVENING...THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE ABOVE COUNTIES. JUNG
Special weather statement, Aug 31, 8:37 PM EDT, 28 minutes before
PAZ005-006-010-011-010200- SPECIAL WEATHER STATEMENT - SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 829 PM EDT THU AUG 31 1995 PORTIONS OF THE SEVERE THUNDERSTORM WATCH HAVE BEEN DISCONTINUED AS OF 830 PM. IN NORTHWEST PENNSYLVANIA...THE COUNTIES DROPPED FROM THE SEVERE THUNDERSTORM WATCH INCLUDE... CAMERON... ELK... MCKEAN... AND POTTER. WITH THE PASSAGE OF A COLD FRONT THIS EVENING...THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE ABOVE COUNTIES. JUNG
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 31, 8:39 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 36 min |
| Aug 31, 8:44 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 61 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.