Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 64, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 18, 1997, 7:56 PM EDT for Beaver County, Washington 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
- Jul 18, 1997, 7:56 PM EDT (23:56 UTC)
- Expired
- Jul 18, 1997, 8:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Beaver County, PA, Washington County, PA
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 11.9 hours before the alert went out and 17 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
- 582 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1058 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KPIT 182355 RRA SVRPIT PAC007-125-190045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 756 PM EDT FRI JUL 18 1997 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 845 PM EDT FOR THE FOLLOWING LOCATIONS... IN WEST PENNSYLVANIA ...BEAVER COUNTY...WASHINGTON COUNTY A SEVERE THUNDERSTORM LOCATED IN SOUTHERN BEAVER COUNTY NEAR THE RACCOON STATE PARK IS MOVING SOUTHEAST AT 25 MPH. IT WILL AFFECT BURGETTSTOWN IN NORTHERN WASHINGTON BETWEEN 800 AND 815 PM. DAMAGING WINDS ARE LIKELY FROM THIS STORM. LARGE HAIL IS ALSO POSSIBLE. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND...DESTRUCTIVE HAIL... DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR SAFETY...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR BUILDING. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE ADVANCE WARNING. HEAVY RAINS CAN QUICKLY CAUSE FLOODING. DO NOT CROSS WHERE WATER COVERS YOUR PATH.
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, Jul 18, 2:15 PM EDT, 5 hours 41 minutes before
PAZ007>009-013>016-022-190000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH PA 215 PM EDT FRI JUL 18 1997 ...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS... A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM TONIGHT FOR THESE COUNTIES NORTH OF PITTSBURGH IN WESTERN PENNSYLVANIA... ARMSTRONG BUTLER CLARION FOREST JEFFERSON LAWRENCE MERCER VENANGO. DAMAGING WIND AND HAIL ARE POSSIBLE UNTIL 8 PM TONIGHT. OTHER THUNDERSTORMS DEVELOPING OVER EAST CENTRAL OHIO ARE MOVING INTO THE NORTHERN PANHANDLE OF WEST VIRGINIA AND SOUTHWEST PENNSYLVANIA. UP TO AN INCH AND A HALF OF RAIN IS POSSIBLE WITH THESE STORMS. AS A COLD FRONT PRESSES SOUTHWARD THIS EVENING...THE RAIN WILL BE PUSHED FURTHER SOUTH...WITH ALL THE RAIN ENDING BY MIDNIGHT.
Local storm report, Jul 18, 4:20 PM EDT, 3 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
420 PM EDT FRI JUL 18 1997
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 PM CLAYSVILLE PA WIND DAMAGE
07/18/97 WASHINGTON NUMEROUS PINE TREES
BLOWN DOWN BETWEEN
CLAYSVILLE AND WASHINGTON.
SOME BROKEN OFF HALF WAY
UP.
0303 PM WASHINGTON PA .88 INCH HAIL
07/18/97 WASHINGTON 3 MILES SW WASHINGTON
0305 PM 3 SW WASHINGTON PA WIND DAMAGE
07/18/97 WASHINGHTON TREES DOWN.
0313 PM PITTSBURGH INTL ARPT PA .88 INCH HAIL
07/18/97 ALLEGHENY 3 MILES SW PITTSBURGH
INTERNATIONAL AIRPORT
0330 PM MURRYSVILLE PA WIND DAMAGE
07/18/97 WESTMORELAND TREES DOWN.Local storm report, Jul 18, 4:21 PM EDT, 3 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
420 PM EDT FRI JUL 18 1997
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 PM CLAYSVILLE PA WIND DAMAGE
07/18/97 WASHINGTON NUMEROUS PINE TREES
BLOWN DOWN BETWEEN
CLAYSVILLE AND WASHINGTON.
SOME BROKEN OFF HALF WAY
UP.
0303 PM WASHINGTON PA .88 INCH HAIL
07/18/97 WASHINGTON 3 MILES SW WASHINGTON
0305 PM 3 SW WASHINGTON PA WIND DAMAGE
07/18/97 WASHINGHTON TREES DOWN.
0313 PM PITTSBURGH INTL ARPT PA .88 INCH HAIL
07/18/97 ALLEGHENY 3 MILES SW PITTSBURGH
INTERNATIONAL AIRPORT
0330 PM MURRYSVILLE PA WIND DAMAGE
07/18/97 WESTMORELAND TREES DOWN.Special weather statement, Jul 18, 4:54 PM EDT, 3 hours 2 minutes before
PAZ007>009-013>016-022-190000- SPECIAL WEATHER STATEMENT - WATCH CANCELLATION NATIONAL WEATHER SERVICE PITTSBURGH PA 500 PM EDT FRI JUL 18 1997 ...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS... THE SEVERE THUNDERSTORM WATCH FOR WESTERN PENNSYLVANIA NORTH OF PITTSBURGH HAS BEEN CANCELLED. A NEW SEVERE THUNDERSTORM WATCH WAS ISSUED FOR CENTRAL PENNSYLVANIA. ONLY A FEW SCATTERED THUNDERSTORMS REMAIN THIS EVENING FOR EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA...AND WESTERN PENNSYLVANIA.
Special weather statement, Jul 18, 5:00 PM EDT, 2 hours 56 minutes before
PAZ007>009-013>016-022-190000- SPECIAL WEATHER STATEMENT - WATCH CANCELLATION NATIONAL WEATHER SERVICE PITTSBURGH PA 500 PM EDT FRI JUL 18 1997 ...THE NATIONAL WEATHER SERVICE IN PITTSBURGH SAYS... THE SEVERE THUNDERSTORM WATCH FOR WESTERN PENNSYLVANIA NORTH OF PITTSBURGH HAS BEEN CANCELLED. A NEW SEVERE THUNDERSTORM WATCH WAS ISSUED FOR CENTRAL PENNSYLVANIA. ONLY A FEW SCATTERED THUNDERSTORMS REMAIN THIS EVENING FOR EAST CENTRAL OHIO...NORTHERN WEST VIRGINIA...AND WESTERN PENNSYLVANIA.
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 2:48 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 57 min |
| Jul 18, 2:58 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 62 min |
| Jul 18, 3:15 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 60 min |
| Jul 18, 7:17 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong | 58 min |
| Jul 18, 7:19 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 56 min |
| Jul 18, 7:29 PM EDT | Severe Thunderstorm Warning | PBZ | Indiana | 46 min |
| Jul 18, 7:40 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 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; the sounding from the Mesonet's radiosonde archive.