Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 90, NWS Cleveland, OH

July 8, 1986Venango County, Pennsylvania

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 8, 1986, 5:25 PM EDT for Venango County, Pennsylvania. It was in force for 65 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 8, 1986, 5:25 PM EDT (21:25 UTC)
Expired
Jul 8, 1986, 6:30 PM EDT
In force
65 min
Issued by
NWS Cleveland, OH
Area
Whole counties

County Venango 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

TimeReportWhereRemark
Jul 8, 5:45 PM EDTThunderstorm Wind 0Venango, 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

Pittsburgh, PA (KPIT), launched 12:00Z, 9.4 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 1986-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 327 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 1986-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
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

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KERI 082125 RRA
SVRERI
PAC121-082230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ERIE PA
525 PM EDT TUE JUL 8 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 630 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

NORTHWEST PENNSYLVANIA...VENANGO

AT 520 PM EDT TUESDAY JULY 8 WEATHER RADAR SHOWED A
SEVERE THUNDERSTORM IN NORTHWEST VENANGO COUNTY MOVING TO
THE SOUTHEAST AT 25 MILES PER HOUR.

 THIS SLOW MOVING THUNDERSTORM MAY CAUSE FLOODING OF SMALL
 STREAMS AND UNDERPASSES

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, 12:46 PM EDT, 4 hours 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
1245 PM EDT TUE JUL 8 1986

AT 1240 PM, RADAR INDICATED AN AREA OF VERY STRONG THUNDERSTORMS OVER
STARK COUNTY.

THESE THUNDERSTORMS HAVE PRODUCED SMALL HAIL, BRIEF STRONG WINDS, AND
DANGEROUS CLOUD TO GROUND LIGHTNING.  PEOPLE IN COLUMBIANA COUNTY
SHOULD REMAIN INDOORS AS THESE THUNDERSTORMS MOVE THROUGH.

THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 20 TO 25 MPH.

DOX^EY/MCMULLEN

                                                                             [
Special weather statement, Jul 8, 3:24 PM EDT, 2 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
324 PM EDT TUE JUL 8 1986

AT 320 PM RADAR INDICATED SCATTERED THUNDERSTORMS MOVING THROUGH
MAHONING AND COLUMBIANA COUNTIES.

THESE THUNDERSTORMS COULD PRODUCE SMALL HAIL, GUSTY WINDS, HEAVY RAIN,
AND FREQUENT LIGHTNING.

THE THUNDERSTORMS WERE MOVING SOUTHEAST AT 20 TO 25 MPH.

PEOPLE IN MAHONING AND COLUMBIANA COUNTIES SHOULD BE PREPARED TO MOVE
TO A SAFE PLACE IF WEATHER LOOKS THREATENING.

MCMULLEN/DOXEY

                                                                             [
Special weather statement, Jul 8, 3:45 PM EDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CLEVELAND OH
345 PM EDT TUE JUL 8 1986

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 10 PM EDT FOR
ABOUT THE WESTERN THIRD OF OHIO.  RADAR AT 340 PM INDICATED
NO THUNDERSTORMS FOR THE WATCH AREA IN OHIO.

HOWEVER, A WATCH MEANS CONDITIONS ARE FAVORABLE FOR SEVERE
THUNDERSTORMS TO DEVELOP SO BE ALERT TO RAPIDLY CHANGING WEATHER
CONDITIONS.
MORAVEK
Special weather statement, Jul 8, 4:36 PM EDT, 49 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE YOUNGSTOWN OH
436 PM EDT TUE JUL 8 1986

HEAVY THUNDERSTORMS CONTINUE TO MOVE THROUGH COLUMBIANA COUNTY.

AT 425 PM THE DISASTER SERVICE AGENCY REPORTED DOWNED POWER LINES AND
HEAVY RAIN IN EAST LIVERPOOL. HEAVY RAIN AND FREQUENT LIGHTNING WAS
ALSO REPORTED IN LISBON.

AT 430 PM RADAR INDICATED SCATTERED THUNDERSTORMS OVER STARK AND
COLUMBIANA COUNTIES. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT
20 TO 25 MPH.

PEOPLE IN COLUMBIANA COUNTY CAN EXPECT SMALL HAIL, GUSTY WINDS, HEAVY
RAIN AND DANGEROUS LIGHTNING AS THE THUNDERSTORMS MOVE THROUGH.

DOXEY

                                                                             [
Special weather statement, Jul 8, 4:50 PM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT AND EVENING OHIO WEATHER STORY
NATIONAL WEATHER SERVICE CLEVELAND OH
450 PM EDT TUE JUL 8 1986

A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE EXTREME WEST AND
NORTHWEST COUNTIES OF OHIO UNTIL 10 PM EDT.

THE POTENTIAL FOR THE DEVELOPMENT OF STRONG THUNDERSTORMS REACHING
SEVERE CRITERIA ARE FAVORABLE OVER AN AREA FROM CHICAGO TO DETROIT
AND SOUTH ACROSS CENTRAL INDIANA AND EXTREME WESTERN OHIO. LATE THIS
AFTERNOON SEVERAL CLUSTERS OF THUNDERSTORMS HAD DEVELOPED OVER PARTS
OF INDIANA AND NORTHEASTERN ILLINOIS, AND COULD REACH INTO OHIO THIS
EVENING.

A FEW THUNDERSTORMS DEVELOPED OVER EASTERN OHIO THIS AFTERNOON, SOME
OF WHICH HAD APPROACHED SEVERE LIMITS. SMALL HAIL AND GUSTY WINDS
WERE REPORTED OVER PORTIONS OF COLUMBIANA COUNTY AND VICINITY. MUCH
OF TODAY'S ACTIVITY WAS OVER EASTERN OHIO AND WESTERN PENNSYLVANIA,
EAST OF AN AKRON-MASSILLION LINE. NEARLY THREE-QUARTERS /.70/ OF AN
INCH OF RAIN WAS REPORTED AT YOUNGSTOWN THROUGH 2PM.
 <
HOT, HUMID AND HAZY CONTINUED TO DESCRIBE THE WEATHER ELEMENTS OVER
MUCH OF OHIO TODAY. AFTERNOON TEMPERATURES REACHED INTO THE 90 TO
95 DEGREE RANGE UNDER A BLAZING SUN OVER THE SOUTHERN HALF OF THE
STATE, WHILE MID TO UPPER 80S WERE FELT IN THE NORTHERN HALF.

THE GREATEST POTENTIAL FOR SHOWERS AND THUNDERSTORMS WILL BE TONIGHT
THROUGH WEDNESDAY. A WEAK FRONTAL SYSTEM NORTH OF THE STATE WAS
ALLOWING FOR THE WARM HUMID AIR TO SETTLE OVER NOT ONLY OHIO, BUT OVER
MUCH OF THE REGION. HOWEVER, THE FRONT WILL SLOWLY SLIDE SOUTH ACROSS
OHIO LATE TONIGHT AND WEDNESDAY, BRINGING IN DRIER AND SLIGHTLY COOLER
AIR BY THURSDAY.

ROG

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.