Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 51, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jun 12, 1997, 10:11 PM EDT for Juniata County, Mifflin County, Pennsylvania. It was in force for 49 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, 10:11 PM EDT (02:11 UTC)
- Expired
- Jun 12, 1997, 11:00 PM EDT
- In force
- 49 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
Counties Juniata County, PA, Mifflin County, PA
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.2 hours before the alert went out and 180 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
- 661 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 1115 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
868 WUUS01 KCTP 130212 RRA SVRCTP PAC067-087-130300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 1011 PM EDT THU JUN 12 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN CENTRAL PENNSYLVANIA ...MIFFLIN COUNTY IN SOUTH CENTRAL PENNSYLVANIA ...JUNIATA COUNTY AT 1005 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR MC VEYTOWN IN MIFFLIN COUNTY. THIS STORM IS MOVING EAST AT 20 MPH AND WILL BE NEAR MC COYSVILLE IN JUNIATA COUNTY BY AROUND 1030 PM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS AND STAY AWAY FROM WINDOWS. HEAVY RAINS FLOOD ROADS QUICKLY. DONT 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, 9:21 PM EDT, 50 minutes earlier.
Area forecast discussion, Jun 12, 9:21 PM EDT, 50 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 920 PM EDT THU JUN 12 1997 ...ZONE SUGGESTIONS/COORDINATION... ...PIT/PHL...THINK BULK OF SHOWERS/THUNDER WILL BE IN THE MORNING FRI...BEFORE LOW LEVEL FLOW TURNS MORE WEST AND HELPS PUT A LID ON THINGS. THINK PATCHY FOG CUD BE A PROBLEM TMRW NIGHT WITH MOS LOWS EXPECTED TO FALL NEAR DEWPOINTS. ...DISCUSSION... REAL QUICK TONIGHT...DEALING WITH MARGINAL STORMS ON RADAR. EVERY NOW AND AGAIN ALGORITHM FOR SEVERE HAIL KICKS OFF. ONLY REPORT HAS BEEN FROM NWS INTERN IN AOO WITH 1/2" OR LESS FROM SMALL CELL THAT SKIRTED CITY. OTHER LARGER CELLS HAVE ELICITED NO PUBLIC RESPONSES. BEST CELL PULSED INTO SULLIVAN COUNTY EARLIER WITH 50DBZ CORE INTO MID 20'S BUT AGAIN NO REPORTS. SATELLITE SHOWS STRING OF SHORTWAVES RESPONSIBLE FOR CONVECTION FROM NY TO MID WEST. FIRST IS MOVING INTO ERN GR LAKES AND SEEMS TO BE FOCUS FOR LINE OF STORMS WHICH IS MOVING THRU NOW. LOOKS LIKE SOME SORT OF BREAK OUT TO ABOUT IN WHERE NEXT SHORTWAVE ON WATER VAPOR IMAGERY IS TRIGGERING CONVECTION. THIS SHORTWAVE IS MADE TO SWING EAST WITH ETA CONFINING MOST OF THE PRECIP TO THE SOUTH OF US. MESO ETA SUGGESTS CONVECTION WILL BE A PROB STARTING LATER TONIGHT AND MUCH OF TMRW...TRACKING ACROSS SRN PA COUNTIES. HOWEVER DON'T THINK TMRW WILL BE AS ACTIVE AS TODAY WITH ALL MODELS AGREEING IN TURNING LOW LEVEL WIND MORE WESTERLY IN TIME WHICH SHUD AID IN ADDING DOWNSLOPE COMPONENT TO FLOW EAST OF MTNS. STILL WITH AFTERNOON CAPES FLIRTING WITH 1000 THERE WILL LIKELY BE SOME THUNDER TO DEAL WITH...ESPECIALLY OVER ERN PA. LA CORTE
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.