Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 155, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Aug 16, 1997, 8:01 PM EDT for Clearfield County, Pennsylvania. It was in force for 64 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Aug 16, 1997, 8:01 PM EDT (00:01 UTC)
- Expired
- Aug 16, 1997, 9:05 PM EDT
- In force
- 64 min
- Issued by
- NWS State College, PA
- Area
- Whole counties
County Clearfield County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 16, 8:30 PM EDT | Thunderstorm Wind 51 | Irvona, PA | Trees were down on a farmhouse near Irvona. Trees also down in Kylertown. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 16, 7:30 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 0.0 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
- 3957 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 819 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 180 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 4.5
- Supercell composite
- 26.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCTP 170003 RRA SVRCTP PAC033-170105- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE STATE COLLEGE PA 801 PM EDT SAT AUG 16 1997 THE NATIONAL WEATHER SERVICE IN STATE COLLEGE PA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 905 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST CENTRAL PENNSYLVANIA ...CLEARFIELD COUNTY AT 800 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS ENTERING WESTERN CLEARFIELD COUNTY. AT 8 PM...THE STORMS EXTEND FROM DUBOIS TO NEWTONBURG AND WILL REACH FROM LECONTES MILLS TO CURWINSVILLE BY 830 PM. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED. DO NOT DRIVE INTO LOW WATER CROSSINGS. JUNG/OSTUNO
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 55 minutes earlier.
Area forecast discussion, Aug 16, 2:06 PM EDT, 5 hours 55 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, 4:12 PM EDT, 3 hours 49 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 48 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 50 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 49 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, 7:48 PM EDT, 13 minutes before
PAZ010>012-017>019-024>028-033>036-045-170450- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 748 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PORTION OF CENTRAL PENNSYLVANIA... A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ELK...CAMERON... CLINTON...CLEARFIELD...CENTRE...CAMBRIA...BLAIR...HUNTINGDON... MIFFLIN...JUNIATA...SOMERSET...BEDFORD...FULTON... AND FRANKLIN COUNTIES UNTIL MIDNIGHT EDT. A LARGE CLUSTER OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE THROUGH MOST OF WESTERN AND CENTRAL PENNSYLVANIA THIS EVENING. 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. STAY TUNED TO NOAA WEATHER RADIO...RADIO...TELEVISION OR CABLE TELEVISION FOR THE LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION. LISTEN FOR LATER STATEMENTS...WATCHES...WARNINGS OR ADVISORIES. HEAD
Special weather statement, Aug 16, 7:49 PM EDT, 12 minutes before
PAZ010>012-017>019-024>028-033>036-045-170450- SPECIAL WEATHER STATEMENT- SEVERE THUNDERSTORM WATCH NATIONAL WEATHER SERVICE STATE COLLEGE PA 748 PM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR A LARGE PORTION OF CENTRAL PENNSYLVANIA... A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR ELK...CAMERON... CLINTON...CLEARFIELD...CENTRE...CAMBRIA...BLAIR...HUNTINGDON... MIFFLIN...JUNIATA...SOMERSET...BEDFORD...FULTON... AND FRANKLIN COUNTIES UNTIL MIDNIGHT EDT. A LARGE CLUSTER OF STRONG TO SEVERE THUNDERSTORMS WILL MOVE THROUGH MOST OF WESTERN AND CENTRAL PENNSYLVANIA THIS EVENING. 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. STAY TUNED TO NOAA WEATHER RADIO...RADIO...TELEVISION OR CABLE TELEVISION FxOR THE LATEST UPDATES CONCERNING THIS DEVELOPING WEATHER SITUATION. LISTEN FOR LATER STATEMENTS...WATCHES...WARNINGS OR ADVISORIES. HEAD
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 8:50 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 60 min |
| Aug 16, 8:57 PM EDT | Severe Thunderstorm Warning | CTP | Centre | 53 min |
| Aug 16, 9:04 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 61 min |
| Aug 16, 9:43 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 22 min |
| Aug 16, 10:05 PM EDT | Severe Thunderstorm Warning | CTP | Mifflin | 50 min |
| Aug 16, 10:09 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| Aug 16, 11:01 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour | 64 min |
| Aug 17, 4:45 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 60 min |
| Aug 17, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | Fulton | 58 min |
| Aug 17, 5:25 PM EDT | Tornado Warning | CTP | Bedford, Fulton | 35 min |
| Aug 17, 5:40 PM EDT | Tornado Warning | CTP | Franklin | 50 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.