Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 216, NWS State College, PA

August 27, 1996Bedford County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Aug 27, 1996, 6:03 PM EDT for Bedford County, Pennsylvania. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 27, 1996, 6:03 PM EDT (22:03 UTC)
Expired
Aug 27, 1996, 7:00 PM EDT
In force
57 min
Issued by
NWS State College, PA
Area
Whole counties

County Bedford County, PA

The radar

The State College radar (KCCX), 110 km from the middle of the area, began a volume at 22:05 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 10.1 hours before the alert went out and 144 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 1996-08-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 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 1996-08-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
88 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1184 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
37 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.

NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 2:27 PM EDT, 3 hours 36 minutes earlier.

Area forecast discussion, Aug 27, 2:27 PM EDT, 3 hours 36 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
230 PM EDT TUE AUG 27 1996

...ZONE SUGGESTIONS...
...PHL...WUD LOWER POPS UPPER SUSQ ZONES AS FORCING SEEMS TO WANT
TO STAY MAINLY SOUTH OF THIS AREA. UPPER SHORT WAVE SLIDING EAST OF
AREA SHUD MINIMIZE POPS FOR WED.
...PIT...THINK NRN ZONES WILL SEE MINIMUM CHC POPS OVERNIGHT. SRN
ZONES BEST CHC. REST OF ZONES LOOK OK.

...DISCUSSION...
THUNDER FIRING NOW APPARENTLY IN RESPONSE TO LOW LEVEL MOISTURE
CONVERGENCE WHICH IS BEING CONCENTRATED OVER HIGHER ELEVATIONS DUE
TO DIABATIC HEATING AFFECTS. GENERAL CONVECTION CAN BE SEEN
CONCENTRATING FROM VA/WV NORTHEASTWARD INTO SERN PA. LOCALIZED
FLOODING ALREADY UNDERWAY IN YORK CTY PA.

EXPECT MOST ACTIVITY WILL BE DIURNALLY DEPENDANT WITH PRECIP
TENDING TO WIND DOWN AS WE LOSE HEATING AND AS UPPER TROF SWINGS
THRU BY AROUND MIDNIGHT. WEAK WINDS WILL MAKE AREAS VULNERABLE TO
SLOW MOVING CELLS AND LOCALIZED FLOODING. GRIDDS INDICATE NVA AND
DIVERGING FLOW IN LOW LEVELS WED. LOW LEVEL MOISTURE REMAINS KIND
OF HIGH BUT AFTER ERLY CLOUDS...SHUD SEE DRYING SETTING IN FROM
WEST TO EAST AS SFC LOW FORMS AND MOVES OFF SRN NEW ENG COAST.

LA CORTE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 27, 1:02 PM EDTFlash Flood WarningCTPYork3 hr
Aug 27, 3:15 PM EDTFlash Flood WarningCTPLancaster3 hr
Aug 27, 6:08 PM EDTFlash Flood WarningCTPMcKean, Potter2 hr
Aug 27, 7:12 PM EDTFlash Flood WarningCTPBedford, Somerset3 hr

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.