Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 38, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 29, 1987, 11:50 PM EDT for Beaver County, Pennsylvania. It was in force for 40 min.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1987, 11:50 PM EDT (03:50 UTC)
- Expired
- Jun 30, 1987, 12:30 AM EDT
- In force
- 40 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
County Beaver County, PA
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 3.8 hours before the alert went out and 37 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 290 m²/s²
- 0-3 km storm-relative helicity
- 375 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jun 29, 5:53 PM EDT, 5 hours 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 545 PM EDT MON JUN 29 1987 THESE COUNTIES IN NORTHWESTERN PENNSYLVANIA HAVE BEEN REMOVED FROM SEVERE THUNDERSTORM WATCH NUMBER 282... ERIE...CRAWFORD...MERCER...LAWRENCE...AND VENANGO. A NEW SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED EAST OF PITTSBURGH. COMBINING BOTH WATCHES...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THESE COUNTIES OF WESTERN PENNSYLVANIA UNTIL 10 PM... ALLEGHENY ARMSTRONG BEAVER BEDFORD BLAIR BUTLER CAMBRIA CLARION CENTRE CLEARFIELD FAYETTE FOREST FULTON GREENE HUNTINGDON INDIANA JEFFERSON JUNIATA MCKEAN MIFFLIN SOMERSET WARREN WASHINGTON AND WESTMORELAND. LARGE HAIL HAS BEEN REPORTED IN WEIRTON WEST VIRGINIA.
Special weather statement, Jun 29, 6:15 PM EDT, 5 hours 35 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 615 PM EDT MON JUN 29 1987 MORE COUNTIES IN NORTH PENNSYLVANIA HAVE BEEN REMOVED FROM SEVERE THUNDERSTORM WATCH NUMBER 282... CLARION...FOREST...JEFFERSON...MCKEAN...AND WARREN. COMBINING BOTH WATCHES...A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THESE COUNTIES OF WESTERN PENNSYLVANIA UNTIL 10 PM... ALLEGHENY ARMSTRONG BEAVER BEDFORD BLAIR BUTLER CAMBRIA CENTRE CLEARFIELD FAYETTE FULTON GREENE HUNTINGDON INDIANA JUNIATA MIFFLIN SOMERSET WASHINGTON AND WESTMORELAND. A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 7PM FOR THE COUNTIES OF ALLEGHENY..WASHINGTON..WESTMORELAND.
Special weather statement, Jun 29, 7:15 PM EDT, 4 hours 35 minutes before
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</html>Special weather statement, Jun 29, 8:33 PM EDT, 3 hours 17 minutes before
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The site you requested is temporarily down for maintenance or an unexpected outage.
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 9:08 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 67 min |
| Jun 29, 9:08 PM EDT | Severe Thunderstorm Warning | PBZ | Greene | 67 min |
| Jun 29, 9:35 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 55 min |
| Jun 29, 11:50 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 70 min |
| Jun 30, 6:55 PM EDT | Severe Thunderstorm Warning | PBZ | Butler | 50 min |
| Jun 30, 7:20 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 55 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1987Every severe thunderstorm warning in 1987
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.