Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 241, NWS State College, PA

November 11, 1995Clearfield County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Nov 11, 1995, 4:20 PM EST for Clearfield County, Pennsylvania. It was in force for 55 min.

The area

The counties it named.

The facts

Issued
Nov 11, 1995, 4:20 PM EST (21:20 UTC)
Expired
Nov 11, 1995, 5:15 PM EST
In force
55 min
Issued by
NWS State College, PA
Area
Whole counties

County Clearfield County, PA

The radar

The State College radar (KCCX), 40 km from the middle of the area, began a volume at 21:23 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, 9.3 hours before the alert went out and 152 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 1995-11-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1995-11-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 461 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1543 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
461 m²/s²
0-3 km storm-relative helicity
511 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 Nov 11, 1:12 PM EST, 3 hours 8 minutes earlier.

Area forecast discussion, Nov 11, 1:12 PM EST, 3 hours 8 minutes before
CENTRAL PENNSYLVANIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE STATE COLLEGE PA
105 PM EST SAT NOV 11 1995

FEW REPORTS OF WIND DAMAGE...WINDS NOT QUITE AS BAD NOW
OUTSIDE...AS RW- HAS STARTED.

STILL THINK POTENTIAL FOR SVR...HIGH WINDS...AND HEAVY RAIN
LIMITED...AS FRONT WILL SPEED UP...AND ONLY LIMITED TROPICAL AIR
CAN GET PULLED NORTHWARD...AS TROUGH GOES NEG.

BEST CHANCE FOR H RAIN ETC...COASTAL PLAIN...ESP. NEW ENGLAND.

EXPECT DRY SLOT TO KILL SNOW FOR MOST OF PA...N PA...ESP
NW...COULD GET COMBINATION OF SYN. WRAP AROUND SNOW AND L E
SNOW...PSBL H AMTS LATE TONIGHT AND EARLY SUN AM.

TEMPS WILL GO NOWHERE SUNDAY.

LAKE SNOW OUTLOOK:

SAT  7 AM TO SAT 7 PM...N
SAT  7 .PM TO SUN 7 AM...Y...LATE IN THE PERIOD.
SUN  7 AM TO SUN 7 PM...Y

MARTIN

In the hours before

Special weather statement, Nov 11, 11:05 AM EST, 5 hours 15 minutes before
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Special weather statement, Nov 11, 11:07 AM EST, 5 hours 13 minutes before
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Special weather statement, Nov 11, 3:59 PM EST, 21 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-120500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
359 PM EST SAT NOV 11 1995

...HIGH WIND WARNING FOR ALL OF CENTRAL PENNSYLVANIA FOR THIS EVENING
AND TONIGHT...

...LAKE SNOW ADVISORY TONIGHT AND SUNDAY FOR WARREN COUNTY...

A POTENT FALL STORM OVER THE EASTERN GREAT LAKES LATE THIS
AFTERNOON WILL SWEEP NORTHEAST INTO CANADA...AND DRAG A STRONG COLD
FRONT ACROSS ALL OF PENNSYLVANIA THIS EVENING AND TONIGHT. VERY STRONG
WINDS AND HEAVY DOWNPOURS HAVE ALREADY BEEN REPORTED WITH THIS SYSTEM
AND WILL CONTINUE TO ACCOMPANY THE FRONT AS IT MOVES ACROSS THE STATE.

STRONG WINDS OUT OF THE SOUTH WILL GUST BETWEEN 35 AND 50 MPH WITH
GUSTS IN EXCESS OF 60 MPH POSSIBLE OVER HIGHER ELEVATIONS. AS THE FRONT
PASSES WINDS WILL REMAIN STRONG AND SHIFT TO THE WEST AND NORTHWEST
USHERING IN SHARPLY COLDER TEMPERATURES.

RAIN WILL CHANGE TO SNOW TONIGHT OVER NORTHWESTERN PENNSYLVANIA WHERE
SEVERAL INCHES OF ACCUMULATION IS POSSIBLE BEFORE MORNING. LAKE
EFFECT SNOW SHOWERS AND SQUALLS WILL THEN DEVELOP PROVIDING THE
POTENTIAL FOR ADDITIONAL SNOW ACCUMULATIONS TOMORROW.

MOTORISTS ARE URGED TO PAY SPECIAL ATTENTION TO THE CHANGING ROAD
CONDITIONS AND WATCH FOR SLICK ROADS WITH THE WIDE VARIETY OF
WEATHER IN THE AREA.

SECURE LAWN FURNITURE...GARBAGE CANS...OR OTHER OBJECTS WHICH
COULD BE BLOWN ABOUT BY THE WIND. THE STRONG WIND MAY CAUSE POWER
DISRUPTIONS AND HAZARDS TO HIGH PROFILE VEHICLES.

LA CORTE
Special weather statement, Nov 11, 4:00 PM EST, 20 minutes before
PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-120500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
359 PM EST SAT NOV 11 1995

...HIGH WIND WARNING FOR ALL OF CENTRAL PENNSYLVANIA FOR THIS EVENING
AND TONIGHT...

...LAKE SNOW ADVISORY TONIGHT AND SUNDAY FOR WARREN COUNTY...

A POTENT FALL STORM OVER THE EASTERN GREAT LAKES LATE THIS
AFTERNOON WILL SWEEP NORTHEAST INTO CANADA...AND DRAG A STRONG COLD
FRONT ACROSS ALL OF PENNSYLVANIA THIS EVENING AND TONIGHT. VERY STRONG
WINDS AND HEAVY DOWNPOURS HAVE ALREADY BEEN REPORTED WITH THIS SYSTEM
AND WILL CONTINUE TO ACCOMPANY THE FRONT AS IT MOVES ACROSS THE STATE.

STRONG WINDS OUT OF THE SOUTH WILL GUST BETWEEN 35 AND 50 MPH WITH
GUSTS IN EXCESS OF 60 MPH POSSIBLE OVER HIGHER ELEVATIONS. AS THE FRONT
PASSES WINDS WILL REMAIN STRONG AND SHIFT TO THE WEST AND NORTHWEST
USHERING IN SHARPLY COLDER TEMPERATURES.

RAIN WILL CHANGE TO SNOW TONIGHT OVER NORTHWESTERN PENNSYLVANIA WHERE
SEVERAL INCHES OF ACCUMULATION IS POSSIBLE BEFORE MORNING. LAKE
EFFECT SNOW SHOWERS AND SQUALLS WILL THEN DEVELOP PROVIDING THE
POTENTIAL FOR ADDITIONAL SNOW ACCUMULATIONS TOMORROW.

MOTORISTS ARE URGED TO PAY SPECIAL ATTENTION TO THE CHANGING ROAD
CONDITIONS AND WATCH FOR SLICK ROADS WITH THE WIDE VARIETY OF
WEATHER IN THE AREA.

SECURE LAWN FURNITURE...GARBAGE CANS...OR OTHER OBJECTS WHICH
COULD BE BLOWN ABOUT BY THE WIND. THE STRONG WIND MAY CAUSE POWER
DISRUPTIONS AND HAZARDS TO HIGH PROFILE VEHICLES.

LA CORTE

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 11, 4:20 PM ESTSevere Thunderstorm WarningCTPBedford, Blair, Cambria, Somerset55 min
Nov 11, 4:23 PM ESTSevere Thunderstorm WarningCTPElk, McKean, Warren67 min
Nov 11, 4:59 PM ESTSevere Thunderstorm WarningCTPFranklin, Fulton, Huntingdon76 min
Nov 11, 4:59 PM ESTSevere Thunderstorm WarningCTPCentre, Juniata, Mifflin76 min
Nov 11, 6:06 PM ESTSevere Thunderstorm WarningCTPLycoming, Montour, Northumberland, Snyder, Union69 min
Nov 11, 6:06 PM ESTSevere Thunderstorm WarningCTPCentre, Clinton69 min
Nov 11, 6:06 PM ESTSevere Thunderstorm WarningCTPTioga69 min
Nov 11, 6:13 PM ESTSevere Thunderstorm WarningCTPCumberland, Dauphin, Perry, York77 min
Nov 11, 6:13 PM ESTSevere Thunderstorm WarningCTPAdams, Franklin77 min
Nov 11, 6:13 PM ESTSevere Thunderstorm WarningCTPJuniata, Mifflin77 min
Nov 11, 6:50 PM ESTSevere Thunderstorm WarningCTPColumbia, Sullivan55 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1995Every severe thunderstorm warning in 1995

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.