Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 13, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 8, 1986, 12:55 PM EDT for Allegheny County, Westmoreland County, Pennsylvania. It was in force for 65 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1986, 12:55 PM EDT (16:55 UTC)
- Expired
- Jul 8, 1986, 2:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Allegheny County, PA, Westmoreland 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 12:00Z, 4.9 hours before the alert went out and 32 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
- 327 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 893 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 73 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 081655 SVRPIT PAC003-129-081800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 1255 PM EDT TUE JUL 8 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 200 PM EDT FOR THE FOLLOWING COUNTIES OF PENNSYLVANIA.. ALLEGHENY.. WESTMORELAND AT 1 PM WEATHER RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS OVER ALLEGHENY AND WESTMORELAND COUNTIES MOVING SOUTHEAST AT 30 MPH. THERE MAY ALSO BE REPEATED HEAVY RAINS FROM THESE STORMS WHICH MAY CAUSE FLOODING. THERE HAS BEEN WIND DAMAGE REPORTED FROM THESE STORMS WITHIN THE PAST HOUR. THESE THUNDERSTORMS MAY PRODUCE LARGE HAIL.. HEAVY RAINS.. DAMAGING WINDS HAND DANGEROUS LIGHTNING. LAG
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 8, 11:45 AM EDT, 1 hour 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 1140 AM EDT TUE JUL 08 1986 WESTERN PENNSYLVANIA IS GOING TO BE BESIEGED BY HEAVY THUNDERSTORMS SOMETIME THIS AFTERNOON OR TONIGHT. HOWEVER..BECAUSE OF THE SCATTERED NATURE OF THESE STORMS..IT CANNOT YET BE DETERMINED SPECIFICALLY WHEN AND WHERE THESE STORMS WILL OCCUR. SO WHILE OUT IN THE HEAT AND HUMIDITY THIS AFTERNOON AND EVENING.. KEEP THESE SAFETY RULES IN MIND. DESPITE ALL THE DESTRUCTION THAT HIGH WIND AND FLOODING MAKE.. LIGHTNING KILLS AS MANY. SO WHENEVER A HEAVY THUNDERSTORM APPROACHES.. FIND REFUGE INDOORS IF POSSIBLE. IF THE STORM HAS HIGH WIND.. GO TO THE BASEMENT AND STAY AWAY FROM WINDOWS. IF YOU ARE CONFRONTED BY FLOODING..STAY AWAY FROM IT AS THE FAST MOVING WATER CAN SWEEP YOU AWAY. SO DONT GO THROUGH FLOODED WATERS ON YOUR WAY TO HIGHER GROUND. THE NATIONAL WEATHER SERVICE WILL BE CLOSELY MONITORING THIS SITUATION. STAY TUNED FOR LATER ADVISORI ES. . GIORDANO
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 11:53 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 67 min |
| Jul 8, 12:20 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 40 min |
| Jul 8, 1:47 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 43 min |
| Jul 8, 2:14 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 56 min |
| Jul 8, 3:14 PM EDT | Severe Thunderstorm Warning | PBZ | Westmoreland | 56 min |
| Jul 8, 4:14 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Washington | 56 min |
| Jul 8, 4:14 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Somerset | 56 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 1986Every severe thunderstorm warning in 1986
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.