Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 154, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 16, 1997, 7:36 PM EDT for Potter County, Pennsylvania. It was in force for 64 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
- Aug 16, 1997, 7:36 PM EDT (23:36 UTC)
- Expired
- Aug 16, 1997, 8:40 PM EDT
- In force
- 64 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Potter County, PA
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.6 hours before the alert went out and 147 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
- 518 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 740 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 162337 RRA SVRCTP PAC105-170040- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 736 PM EDT SAT AUG 16 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 840 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL PENNSYLVANIA ...NORTHERN POTTER COUNTY AT 735 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS REACHING FROM ELLISBURG IN NORTHERN POTTER COUNTY TO ELDRED IN NORTHERN MCKEAN COUNTY. THE STORMS WILL BE AFFECTING AREAS IN POTTER COUNTY NORTH OF ROUTE 6 THROUGH 830 PM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE TWEATHER IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. JUNG
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 16, 2:06 PM EDT, 5 hours 30 minutes earlier.
Area forecast discussion, Aug 16, 2:06 PM EDT, 5 hours 30 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE STATE COLLEGE PA 205 PM EDT SAT AUG 16 1997 ...ZONE SUGGESTIONS... NONE...ZONES LOOK GOOD. ...DISCUSSION... IR AND WV IMAGERY SHOWS SMALL MCS WORKG ACROSS N PA ATTM WITH A STRONG LEWP TYPE SQUALL LINE...SIMILAR TO 5/19/97 EVENT. THIS MCS WILL CONTINUE PROPOAGATING THROUGH VERY FAVORABLE ENVIRONMENT THROUGH THE AFT INTO THE EVE SO LOOKS LIKE A LONG-LIVED EVENT... AGAIN SIMILAR TO 5/19. MOST OF THE ACTION WILL STAY NORTH OF I-80...BUT SOME SCATTERED STRONG TO SEVERE STORMS COULD OCCUR ACROSS SOUTHERN PA WITH LATE AFT HEATING. THINGS SHOULD QUIET DOWN CONSIDERABLY FOR TONIGHT. CONCERN FOR SUNDAY WILL BE PTNL FOR HEAVY RAINFALL/FLOODING IN PA. EAST-WEST BOUNDARY SETS UP ACROSS STATE PARALLEL TO FLOW AS WITH GOOD LL CONV AND STRONG LL JET ENTER THE FRAY. THIS SITUATION SHOULD BE LOOKED DURING LATER...LESS HECTIC...SHIFTS. OSTUNO
In the hours before
Special weather statement, Aug 16, 3:46 PM EDT, 3 hours 50 minutes before
PAZ004>006-010>012-017>019-037-162050- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH CANCELLED NATIONAL WEATHER SERVICE STATE COLLEGE PA 345 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH FOR THE NORTHERN MOUNTAINS...CENTRAL MOUNTAINS...AND PARTS OF THE UPPER SUSQUEHANNA VALLEY HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES: WARREN...MCKEAN...POTTER...TIOGA...ELK...CAMERON...CLINTON... CLEARFIELD...AND CENTRE. A LINE OF SEVERE THUNDERSTORMS HAS MOVED EAST OF THIS AREA. THE THREAT OF SEVERE WEATHER HAS ENDED FOR THE MOMENT. OSTUNO OFFICIAL NATIONAL WEATHER SERVICE FORECASTS...STATEMENTS... WATCHES...WARNINGS AND ADVISORIES FOR PENNSYLVANIA CAN BE FOUND ON THE WORLD WIDE WEB AT THE FOLLOWING ADDRESS: HTTP://IWIN.NWS.NOAA/GOV/IWIN/PA/PA.HTML OR 140.90.6.254/IWIN/PA/PA.HTML
Special weather statement, Aug 16, 3:54 PM EDT, 3 hours 42 minutes before
PAZ041-042-046-049>053-058-170140- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 335 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH UNTIL 9 PM FOR THE MID-SUSQUEHANNA VALLEY... THE COUNTIES INCLUDED IN THE WATCH ARE: LYCOMING...SULLIVAN...UNION...SNYDER...NORTHUMBERLAND... MONTOUR...COLUMBIA....AND SCHUYLKILL. A LINE OF SEVERE THUNDERSTORMS WITH A LONG HISTORY OF WIND DAMAGE WILL MOVE THROUGH THIS AREA THIS AFTERNOON AND INTO THIS EVENING. THESE STORMS ARE CAPABLE OF PRODUCING STRONG DAMAGING WINDS AND HEAVY DOWNPOURS. A SEVERE THUNDERSTORM WATCH MEANS SEVERE THUNDERSTORMS ARE POSSIBLE IN AND NEAR THE WATCH AREA. PEOPLE IN0 THE WATCH AREA SHOULD WATCH LOCAL WEATHER CONDITIONS AND LISTEN FOR POSSIBLE SEVERE WEATHER WARNINGS. CORRECTED TO CHANGE WARNING TO WATCH IN HEADER. OSTUNO
Special weather statement, Aug 16, 4:12 PM EDT, 3 hours 24 minutes before
PAZ004-170215- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 412 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR WARREN COUNTY UNTIL 10 PM... SEVERE THUNDERSTORMS CONTINUE TO FORM IN THE WARM AND HUMID AIR OVER NORTHWESTERN PENNSYLVANIA. SEVERE THUNDERSTORMS ARE POSSIBLE IN WARREN COUNTY THIS EVENING...AND A WATCH HAS BEEN ISSUED. A SEVERE THUNDERSTORM WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. SEVERE THUNDERSTORMS ARE A POSSIBILITY... NOT A CERTAINTY. A SEVERE THUNDERSTORM PRODUCES WINDS OF 58 MPH OR GREATER AND/OR HAIL 3/4 INCH OR LARGER. JUNG/HEAD
Special weather statement, Aug 16, 4:13 PM EDT, 3 hours 23 minutes before
PAZ004-170215- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 412 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR WARREN COUNTY UNTIL 10 PM... SEVERE THUNDERSTORMS CONTINUE TO FORM IN THE WARM AND HUMID AIR OVER NORTHWESTERN PENNSYLVANIA. SEVERE THUNDERSTORMS ARE POSSIBLE IN WARREN COUNTY THIS EVENING...AND A WATCH HAS BEEN ISSUED. A SEVERE THUNDERSTORM WATCH MEANS THAT CONDzITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF SEVERE THUNDERSTORMS. SEVERE THUNDERSTORMS ARE A POSSIBILITY... NOT A CERTAINTY. A SEVERE THUNDERSTORM PRODUCES WINDS OF 58 MPH OR GREATER AND/OR HAIL 3/4 INCH OR LARGER. JUNG/HEAD
Special weather statement, Aug 16, 6:11 PM EDT, 1 hour 25 minutes before
PAZ041-042-046-049>053-058-162245- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH CANCELLATION NATIONAL WEATHER SERVICE STATE COLLEGE PA 611 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH CANCELLED... THE SEVERE THUNDERSTORM WATCH FOR LYCOMING...SULLIVAN...UNION... SNYDER...NORTHUMBERLAND...MONTOUR...COLUMBIA... AND SCHUYLKILL COUNTIES HAS BEEN CANCELLED AS OF 6 PM EDT. THE THUNDERSTORMS HAVE MOVED EAST OF THE AREA ENDING THE THREAT OF SEVERE WEATHER FOR NOW. HEAD
Special weather statement, Aug 16, 6:12 PM EDT, 1 hour 24 minutes before
PAZ041-042-046-049>053-058-162245- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH CANCELLATION NATIONAL WEATHER SERVICE STATE COLLEGE PA 611 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH CANCELLED... THE SEVERE THUNDERSTORM WATCH FOR LYCOMING...SULLIVAN...UNION... SNYDER...NORTHUMBERLAND...MONTOUR...COLUMBIA... AND SCHUYLKILL COUNTIES HAS BEEN CANCELLED AS OF 6 PM EDT. THE THUNDERSTORMS HAVE MOVED EAST OF THE AREA ENDING THE THREAT OF SEVERE WEATHER FOR NOW. HEAD
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 11:32 AM EDT | Severe Thunderstorm Warning | CTP | Warren | 58 min |
| Aug 16, 12:26 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 59 min |
| Aug 16, 12:43 PM EDT | Severe Thunderstorm Warning | CTP | Elk | 62 min |
| Aug 16, 1:12 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Potter | 58 min |
| Aug 16, 1:26 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 59 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 62 min |
| Aug 16, 1:43 PM EDT | Severe Thunderstorm Warning | CTP | Tioga | 62 min |
| Aug 16, 2:01 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming | 64 min |
| Aug 16, 2:10 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Aug 16, 2:17 PM EDT | Severe Thunderstorm Warning | CTP | Clinton | 63 min |
| Aug 16, 2:24 PM EDT | Severe Thunderstorm Warning | CTP | Clearfield | 31 min |
| Aug 16, 2:41 PM EDT | Severe Thunderstorm Warning | CTP | Sullivan | 64 min |
| Aug 16, 2:56 PM EDT | Tornado Warning | CTP | Sullivan | 49 min |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Lycoming, Montour, Northumberland | 61 min |
| Aug 16, 3:04 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Union | 61 min |
| Aug 16, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Northumberland, Snyder | 63 min |
| Aug 16, 3:22 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 63 min |
| Aug 16, 3:58 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 62 min |
| Aug 16, 7:14 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 61 min |
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.