Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 101, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 16, 1997, 12:46 PM EDT for Armstrong 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
- Aug 16, 1997, 12:46 PM EDT (16:46 UTC)
- Expired
- Aug 16, 1997, 1:15 PM EDT
- In force
- 29 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Armstrong County, PA
The radar
The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 16:46 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 12:00Z, 4.8 hours before the alert went out and 70 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
- 2423 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 591 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 161646 RRA SVRPIT PAC005-161715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1246 PM EDT SAT AUG 16 1997 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 115 PM EDT FOR THE FOLLOWING LOCATION... IN WEST PENNSYLVANIA ...ARMSTRONG COUNTY A LINE OF SEVERE THUNDERSTORMS IS MOVING INTO NORTHERN ARMSTRONG COUNTY NEAR THE CITY OF PARKER. THE STORMS ARE MOVING EAST AT 45 MPH. IF CAUGHT OUTSIDE...SEEK SHELTER 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 lSTORM HAS PASSED.
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.
In the hours before
Special weather statement, Aug 16, 11:03 AM EDT, 1 hour 43 minutes before
PAZ004>019-162100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1103 AM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH TIL 5 PM FOR THE NORTHERN HALF OF WESTERN PENNSYLVANIA... THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WATCH UNTIL 5 PM FOR THE FOLLOWING COUNTIES... IN WESTERN PENNSYLVANIA... WARREN VENANGO CLINTON JEFFERSON MCKEAN FOREST LAWRENCE CLEARFIELD POTTER ELK BUTLER CENTRE MERCER CAMERON CLARION IN THE WATCH AREA THUNDERSTORMS WITH DAMAGING WIND...LARGE HAIL...LOCALLY HEAVY DOWNPOURS AND FREQUENT LIGHTNING STRIKES ARE POSSIBLE. SKYWARN/HAM RADIO ACTIVATION IS LIKELY. THIS IS A DANGEROUS SITUATION. STAY TUNED TO NOAA WEATHER RADIO AND OTHER MEDIA SOURCES FOR POSSIBLE WARNINGS.
Special weather statement, Aug 16, 11:04 AM EDT, 1 hour 42 minutes before
PAZ004>019-162100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 1103 AM EDT SAT AUG 16 1997 ...SEVERE THUNDERSTORM WATCH TIL 5 PM FOR THE NORTHERN HALF OF WESTERN PENNSYLVANIA... THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WATCH UNTIL 5 PM FOR THE FOLLOWING COUNTIES... IN WESTERN PENNSYLVANIA... WARREN VENANGO CLINTON JEFFERSON MCKEAN FOREST LAWRENCE CLEARFIELD POTTER ELK BUTLER CENTRE MERCER CAMERON CLARION IN THE WATCH AREA THUNDERSTORMS WITH DAMAGING WIND...LARGE HAIL...LOCALLY HEAVY DOWNPOURS AND FREQUENT LIGHTNING STRIKES ARE POSSIBLE. SKYWARN/HAM RADIO ACTIVATION IS LIKELY. THIS IS A DANGEROUS SITUATION. STAY TUNED TO NOAA WEATHER RADIO AND OTHER MEDIA SOURCES FOR POSSIBLE WARNINGS.
Local storm report, Aug 16, 12:23 PM EDT, 23 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1223 PM EDT SAT AUG 16 1997
TIME(EST) ....CITY LOCATION.... STATE...EVENT/REMARKS...
...COUNTY LOCATION...
1215 PM GREENVILLE PA WIND DAMAGE
08/16/97 MERCER TREES DOWN.Local storm report, Aug 16, 12:25 PM EDT, 21 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1223 PM EDT SAT AUG 16 1997
TIME(EST) ....CITY LOCATION.... STATE...EVENT/REMARKS...
...COUNTY LOCATION...
1215 PM GREENVILLE PA WIND DAMAGE
08/16/97 MERCER TREES DOWN.Local storm report, Aug 16, 12:36 PM EDT, 10 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1236 PM EDT SAT AUG 16 1997
TIME(EST) ....CITY LOCATION.... STATE...EVENT/REMARKS...
...COUNTY LOCATION...
1215 PM GREENVILLE PA WIND DAMAGE
08/16/97 MERCER TREES DOWN.
1230 PM COUNTY WIDE PA WIND DAMAGE
08/16/97 VENANGO TREES DOWN.Local storm report, Aug 16, 12:37 PM EDT, 9 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH, PA
1236 PM EDT SAT AUG 16 1997
TIME(EST) ....CITY LOCATION.... STATE...EVENT/REMARKS...
...COUNTY LOCATION...
1215 PM GREENVILLE L PA WIND DAMAGE
08/16/97 MERCER TREES DOWN.
1230 PM COUNTY WIDE PA WIND DAMAGE
08/16/97 VENANGO TREES DOWN.The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 3:23 AM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Lawrence | 52 min |
| Aug 16, 3:41 AM EDT | Severe Thunderstorm Warning | PBZ | Butler | 49 min |
| Aug 16, 11:39 AM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 66 min |
| Aug 16, 12:08 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 67 min |
| Aug 16, 12:10 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 65 min |
| Aug 16, 12:35 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion | 55 min |
| Aug 16, 12:37 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 68 min |
| Aug 16, 12:40 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| Aug 16, 12:48 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 57 min |
| Aug 16, 1:38 PM EDT | Severe Thunderstorm Warning | PBZ | Jefferson | 52 min |
| Aug 16, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Aug 16, 5:18 PM EDT | Tornado Warning | PBZ | Mercer | 57 min |
| Aug 16, 5:46 PM EDT | Severe Thunderstorm Warning | PBZ | Venango | 59 min |
| Aug 16, 6:00 PM EDT | Tornado Warning | PBZ | Mercer | 60 min |
| Aug 16, 6:13 PM EDT | Flash Flood Warning | PBZ | Mercer | 4 hr |
| Aug 16, 6:32 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Venango | 58 min |
| Aug 16, 6:40 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence | 65 min |
| Aug 16, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 57 min |
| Aug 16, 7:03 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 57 min |
| Aug 16, 7:08 PM EDT | Severe Thunderstorm Warning | PBZ | Clarion, Jefferson | 67 min |
| Aug 16, 7:35 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence | 55 min |
| Aug 16, 7:42 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 63 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; radar from the NEXRAD Level II archive.