Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 49, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Jul 29, 1986, 2:30 AM EDT for Fayette County, Westmoreland County, Pennsylvania. It was in force for 60 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 29, 1986, 2:30 AM EDT (06:30 UTC)
- Expired
- Jul 29, 1986, 3:30 AM EDT
- In force
- 60 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Whole counties
Counties Fayette 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 29, 3:00 AM EDT | Thunderstorm Wind 0 | Fayette, PA |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 6.5 hours before the alert went out and 226 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
- 37 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 2218 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 13 m²/s²
- 0-3 km storm-relative helicity
- 15 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 290631 SVRPIT PAC051-129-290730- BULLETIN BROADCAST IMMEDIATELY SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PITTSBURGH PA 230 AM EDT TUE JUL 29 1986 THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A SEVERE THUNDERSTORM WARNING UNTIL 330 AM THIS MORNING FOR THESE COUNTIES IN SOUTHWESTERN PENNSYLVANIA...FAYETTE AND WESTMORELAND. AT 230 AM THIS MORNING WEATHER RADAR SHOWED A SEVERE THUNDERSTORM NEAR CHARLEROI. THIS STORM IS MOVING EAST AT 10 MPH AND WILL MOVE ALONG THE BORDER BETWEEN FAYETTE AND WESTMORELAND COUNTIES. THIS STORM WILL HAVE DAMAGING HIGH WINDS AND DANGEROUS LIGHTNING PLUS LARGE HAIL AND POSSIBLY RAIN HEAVY ENOUGH TO CAUSE FLOODING. A SEVERE THUNDERSTORM WARNING MEANS SEVE4RE THUNDERSTORMS ARE IMMINENT OR IN PROGRESS. THESE STORMS WILL PRODUCE DAMAGING WIND..HAIL..HEAVY RAIN..AND DANGEROUS LIGHTNING. IF THREATENING WEATHER APPROACHES..GO TO A SAFE PLACE IMMEDIATELY. END/COMEAUX/GIORDANO
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 28, 10:20 PM EDT, 4 hours 10 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 1020 PM EDT TUE JUL 28 1986 STRONG THUNDERSTORMS WILL BE MOVING ACROSS WESTERN PENNSYLVANIA OVERNIGHT. SOME COULD HAVE WIND GUSTS STRONG ENOUGH TO CAUSE DAMAGE OR ENOUGH RAIN TO CAUSE FLOODING. MOST BUILDINGS OFFER ADEQUATE PROTECTION FROM LIGHTNING AND THUNDERSTORM WIND GUSTS. MOBILE HOMES THAT ARE NOT ANCHORED ARE NOT. CAMPERS...IF A BAD THUNDERSTORM IS APPROACHING..YOU WOULD BE WISE TO SEEK SHELTER INDOORS. FALLING TREES ARE NO MATCH FOR A TENT. RAINFALL EXCEEDING 3 INCHES OVERNIGHT COULD CAUSE FLOODING. IF YOU LIVE IN A FLOOD PRONE AREA..BE ON THE LOOKOUT FOR REPEATED HEAVY RAIN OR WATER LEVELS RAPIDLY RISING. NEVER GO THROUGH FLOODING TO GET HIGHER GROUND. THE WATER MAY BE DEEPER THAN YOU THINK AND THE FAST CURRENT COULD SWEEP YOU AWAY. THE THUNDERSTORMS WILL BE MOVING THROUGH NORTHWESTERN PENNSYLVANIA UNTIL SHORTLY AFTER MIDNIGHT. THEN THE STRONG STORMS WILL YMOVE THROUGH SOUTHWESTERN PENNSYLVANIA AND THE CENTRAL PENNSYLVANIA MOUNTAINS IN THE HOURS BETWEEN MIDNIGHT AND DAWN. THE NATIONAL WEATHER SERVICE IS CLOSELY MONITORING THESE STORMS. TUNE IN FOR LATER ADVISORIES. GIORDANO
Special weather statement, Jul 28, 11:47 PM EDT, 2 hours 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 1150 PM EDT MON JUL 28 1986 AT 1145 PM RADAR SHOWED A SEVERE THUNDERSTORM JUST EAST OF EAST LIVERPOOL OHIO..ENTERING BEAVER COUNTY PENNSYLVANIA. FREQUENT..DANGEROUS LIGHTNING HAS BEEN REPORTED WITH THIS STORM. THE STORM WILL MOVE INTO ALLEGHENY COUNTY BETWEEN MIDNIGHT AND 130AM. OTHER STRONG THUNDERSTORMS WERE LOCATED IN TRUMBULL AND MAHONING COUNTIES IN OHIO..AND IN MERCER..LAWRENCE..BUTLER COUNTIES IN PENNSYLVANIA. THE THUNDERSTORMS ARE MOVING SOUTHEAST AT 15 MPH. SHOWERS WERE LOCATED IN SOUTHEASTERN OHIO FROM COLUMBUS TO ZANESVILLE.
Special weather statement, Jul 29, 12:04 AM EDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PITTSBURGH, PA 12 MIDNIGHT EDT TUE JUL 29 1986 A SEVERE LIGHTNING STORM WILL BE MOVING THROUGH BEAVER COUNTY AND ALLEGHENY COUNTY BETWEEN NOW AND 2 AM. INDOORS IS THE SAFEST PLACE FOR LIGHTNING. WHEN INDOORS HOWEVER..STAY OFF THE PHONE. UNPLUG LARGE APPLIANCES. AND GET YOUR FLASHLIGHTS AND CANDLES READY. THE LIGHTNING FROM THIS STORM DESTOYED A BARN IN SALEM OHIO AND CAUSED NUMEROUS POWER OUTAGES AND TELEPHONE OUTAGES IN EAST LIVERPOOL OHIO. HEAVY LIGHTNING HAS ALSO BEEN REPORTED IN BEAVER COUNTY. ALSO BE ON THE LOOK OUT FOR STRONG WIND..LARGE HAIL..AND RAIN HEAVY ENOUGH TO CAUSE FLOODING. IF YOU ARE IN FLOOD PRONE AREA..BE WATCHFUL FOR PROLONGED HEAVY RAIN AND SUDDENLY RISING WATER LEVELS. THIS STORM WILL BE MOVING THROUGH THE WEST HILLS OF PITTSBURGH BETWEEN MIDNIGHT AND 1 AM. BASED ON ITS PRESENT MOVEMENT TOWARD THE SOUTHEAST AT 10 MILES AN HOUR..IT COULD BE GOING THROUGH THE DOWNTOWN PITTSBURGH AREA BETWEEN 1 AM AND 2 AM. . USING BATTERY OPERATED RADIO AND TV...KEEP TUNED FOR LATER ADVISORIE. GIORDANO/VISNESKI
Local storm report, Jul 29, 12:28 AM EDT, 2 hours 2 minutes before
STORM REPORT NATIONAL WEATHER SERVICE PITTSBURGH, PA 1230 AM EDT TUE JUL 29 1986 AT 1205AM EDT IN BEAVER COUNTY PENNSYLVANIA...POWER LINES WERE BLOWN DOWN IN PLEASANTS TOWNSHIP AND MIDLAND PENNSYLVANIA.
Special weather statement, Jul 29, 1:57 AM EDT, 33 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE PITTSBURGH, PA 157 AM EDT TUE JUL 29 1986 THUNDERSTORMS WERE LIGHTING UP THE SKIES OVER WESTERN PENNSYLVANIA ..EASTERN OHIO..AND THE PAHANDLE OF NORTHERN WEST VIRGINIA. AT 130 AM EDT...NATIONAL WEATHER SERVICE RADAR IN PITTSBURGH WAS SHOWING SCATTERED STRONG THUNDERSTORMS ALONG THE PENNSYLVANIA AND OHIO STATE LINE. THE THUNDERSTROMS EXTENDED FROM LAKE ERIE SOUTH ALONG THE STATE LINES INTO THE PANHANDLE OF NORTHERN WEST VIRGINIA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOK-OUT FOR DANGEROUS LIGHTNING. LIGHTNING HAS ALREADY CAUSED NUMEROUS POWER OUTAGES THROUGH-OUT EASTERN OHIO..WESTERN PENNSYLVANIA AND THE WEST VIRGINIA PANHANDLE. THESE STORMS ARE MOVING TO THE EAST AT 15 MILES AN HOUR. BECAUSE OF THE SOME WHAT SLOW SPEED FLOODING OF LOW LYING AREAS AND SMALL STREAMS AND CREEKS IS POSSIBLE. HAIL THE SIZE OF NICKLES AND WINDS OVER 50 MILES AN HOUR HAVE BEEN RECO&RDED WITH SOME OF THESE STORMS. STAY TUNED TO COMMERICAL RADIO AND TV..OR WEATHER RADIO FOR LATER WEATHER BULLITINS AND BE READY TO TAKE ACTION IF THREATING WEATHER APPROACHES YOUR AREA. TAYLOR/WELLS
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 11:05 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver | 70 min |
| Jul 29, 1:00 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 2 hr |
| Jul 29, 1:00 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 60 min |
| Jul 29, 1:00 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 60 min |
| Jul 29, 2:00 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Washington, Westmoreland | 60 min |
| Jul 29, 2:00 AM EDT | Severe Thunderstorm Warning | PBZ | Greene | 60 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.