Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 2, NWS State College, PA

May 31, 1986Tioga County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at May 31, 1986, 6:40 PM EDT for Tioga County, Pennsylvania. It was in force for 36 min.

The area

The counties it named.

The facts

Issued
May 31, 1986, 6:40 PM EDT (22:40 UTC)
Expired
May 31, 1986, 7:16 PM EDT
In force
36 min
Issued by
NWS State College, PA
Area
Whole counties

County Tioga 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 10.7 hours before the alert went out and 175 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, Buffalo Intl Airport, NY at 12:00Z on 1986-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 116 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, Buffalo Intl Airport, NY at 12:00Z on 1986-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
116 J/kg
Mixed-layer CIN
-145 J/kg
Mixed-layer LCL
885 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

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, May 31, 5:17 PM EDT, 1 hour 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HARRISBURG PA.
510 PM EDT    SAT  MAY 31 1986

...HEAVY THUNDERSTORMS IN TIOGA AND BRADFOR COUNTIES...

AT 500 PM EDT THE HARRISBURG RADAR WAS OBSERVING HEAVY THUNDERSTORMS
IN TIOGA AND BRADFORD COUNTIES IN PENNSYLVANIA.

THESE THUNDERSTORMS WILL PRODUCE HEAVY RAINS..GUSTY WINDS AND HAIL.
THEY ARE MOVING SOUTHEAST AT 30 MPH.

IF THREATNING WEATHER CONDITIONS ARE OBSERVED..FIND A SECURE AREA
UNTIL~ THE PASSAGE OF THESE STORMS.

END
WSO HAR NEFF

The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 6:05 PM EDTSevere Thunderstorm WarningCTPLycoming55 min
May 31, 6:55 PM EDTSevere Thunderstorm WarningCTPLycoming65 min
May 31, 7:35 PM EDTSevere Thunderstorm WarningCTPNorthumberland55 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.