Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 99, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 16, 1997, 12:37 PM EDT for Forest County, Pennsylvania. It was in force for 68 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, 12:37 PM EDT (16:37 UTC)
- Expired
- Aug 16, 1997, 1:45 PM EDT
- In force
- 68 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Forest County, PA
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, 11:00 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 4.6 hours before the alert went out and 142 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 161637 RRA SVRPIT PAC053-161745- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1237 PM EDT SAT AUG 16 1997 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 145 PM EDT FOR THE FOLLOWING LOCATION... IN NORTHWEST PENNSYLVANIA ...FOREST COUNTY A LINE OF SEVERE THUNDERSTORMS IS MOVING RAPIDLY EAST ACROSS FOREST COUNTY. THIS LINE OF STORMS HAS A HISTORY OF DAMAGING WINDS. THE STORMS ARE MOVING EAST AT 45 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND OVER 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWESNT FLOOR OF YOUR BUILDING. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
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 34 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 33 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, 14 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, 12 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, 1 minute 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, 0 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, 12:40 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 65 min |
| Aug 16, 12:46 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 29 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.