Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 50, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 12, 1997, 6:56 PM EDT for Sullivan County, Pennsylvania. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 1997, 6:56 PM EDT (22:56 UTC)
- Expired
- Jun 12, 1997, 7:25 PM EDT
- In force
- 29 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Sullivan County, PA
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 10.9 hours before the alert went out and 222 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1800 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -31 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 122257 RRA SVRCTP PAC113-122325- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 656 PM EDT THU JUN 12 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 725 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL PENNSYLVANIA ...SULLIVAN COUNTY THE NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTHWEST OF MUNCY. THIS STORM IS MOVING NORTHEAST AT 20 MPH AND WILL BE NEAR LAPORTE BY 715 PM SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MxOVE INDOORS AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY. DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. LA CORTE
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 Jun 12, 2:24 PM EDT, 4 hours 32 minutes earlier.
Area forecast discussion, Jun 12, 2:24 PM EDT, 4 hours 32 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 220 PM EDT THU JUN 12 1997 PHL AND PIT...HAVEN'T SEEN WRKZFP YET BUT AM FCST FOR NEXT 24 HRS LOOKED GOOD. MIGHT WANT TO KEEP THREAT OF SHR/TSTM UNTIL SAT AM OVR W AND SAT PM OVR LWR SUSQ. PIT SEND US WRKZFP FI U WANT SOME HELP. PIT SOUNDING IS MUCH MORE UNSTABLE THAN YDY AND SO IS CMH. WHEN MODIFIED TO 81F THERE IS 1675 CAPE AND LI DROPS FROM -1 TO -4. SHOWERS ALREADY POPPING OVR CLINTON COUNTY. VAD WIND SHOWS NOTHING OVR 35KTS AND ALMOST NO TURNING. CELL MOTION ON SHARP IS ONLY 281 AT 12KTS SO APPRS THAT WE WOULD HAVE A SLOW MOVG PULSE DAY WITH SVR WX CONFINED TO CORE DUMPS AS CELLS COLLAPSE. WE WILL USE THE GREATER THAN 50DBZ AT 27KFT OR ABOVE RULE TO ISSUE ANY WARNINGS UNLESS WE GET A CALL FROM A SPOTTER. REAL TIME SFC BASED LIS ON PSU HOME PAGE AS OF 17Z SHOWS ABOVE 0 LIS OVR LAURELS AND SC MTNS AT PRESENT AND -3 TO -4 LIS OVR LWR SUSQ. INTERESTINGLY ENUF SHWRS ARE POPPING IN MORE STABLE AIR TO THE WEST. LWR SUSQ MAY STILL BE RAIN COOLED. ANOTHER AREA OF -3 TO -5 LIS IN NORTHERN OH DRIFITING E IS ASSOCIATED WITH AREA DEVELOPING TSRA. HAIL ALERTS ON WSR88D OVR CRAWFORD AND ERI COUNTIES. SO WE ARE GEARING UP FOR AN INTERESTING PM/EVE. MODEL TIME CROSS SECTIONS SHOW DEEP MOISTURE OVER UNV THRU 18Z FRI. WINDS TURN NW BUT GRADUALLY ACROSS CTPCWA DURG FRI. AS WINDS INCRS AT 50H-30H TO 50-60KTS LEE SIDE TROF WILL DEVELOP OVR E PA. THIS IS PROB WHERE DEEPEST MOISTURE WILL BE FRI PM. FRONT APPRS TO COME THRU IN 3 PULSES. THE FIRST ONE IS ACTUALLY THE LEE SIDE TROF FORMATION AND IS THE WETTEST. THE SECOND SHIFTS THE WIND INTO THE WNW FRI PM ACRSS WPA. 2ND TROPA MAY HAVE ENUF RESIDUAL MOISTURE AND WITH LATE DAY TIMING COULD BE INTERESTING. WINDS WILL BE STRONGER ALOFT BY THEN AS WELL. THE FINAL ONE DOESN'T COME THRU UNTIL 12Z SAT AND MAY BE DRY BUT WITH EVEN STRONGER WINDS ALOFT WILL HAVE TO WATCH FOR A RENEPGADE GUSTY TSTM B4 DAYBREAK SAT. DRIER AIR AND INCRG AMTS OF SUN FOR WEEKEND. HEAD
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1997Every severe thunderstorm warning in 1997
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.