Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 21, NWS State College, PA

August 6, 1986Juniata County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 6, 1986, 3:00 PM EDT for Juniata 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
Aug 6, 1986, 3:00 PM EDT (19:00 UTC)
Expired
Aug 6, 1986, 4:00 PM EDT
In force
60 min
Issued by
NWS State College, PA
Area
Whole counties

County Juniata 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
Aug 6, 3:25 PM EDTThunderstorm Wind 0Juniata, 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 12:00Z, 7.0 hours before the alert went out and 176 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, Washington/Dulle, VA at 12:00Z on 1986-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 847 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, Washington/Dulle, VA at 12:00Z on 1986-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
847 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
573 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
79 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 KHAR 061906
SVRHAR
PAC067-062000-

BULLETIN-IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING   COORECTION FOR TIME
NATIONAL WEATHER SERVICE HARRISBURG PA.
300 PM EDT  WED AUG  6 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  400 PM    FOR PEOPLE IN THE FOLLOWING COUNTIES OF


CENTRAL PENNSYLVANIA...JUNIATIA


RADAR INDICATED A SEVERE THUNDERSTORM JUST TO THE SOUTHEAST OF LEWISTOWN
AT 255 PM. THIS STORM WAS MO6VING TO THE NORTHEAST AT 20 TO 25 MPH.

PEOPLE IN THE WARNING AREA SHOULD PREPARE FOR STRONG WINDS..HAIL..HEAVY
RAINS AND LIGHTNING. SHOULD THE STORM APPROACH..SEEK SHELTER IMMEADIATELY.

CURLL WSO HARRISBURG

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.