Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 29, NWS State College, PA

June 6, 1994Snyder County, Union County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 6, 1994, 2:03 PM EDT for Snyder County, Union County, Pennsylvania. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jun 6, 1994, 2:03 PM EDT (18:03 UTC)
Expired
Jun 6, 1994, 3:00 PM EDT
In force
57 min
Issued by
NWS State College, PA
Area
Whole counties

Counties Snyder County, PA, Union County, PA

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.1 hours before the alert went out and 215 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 1994-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 348 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 1994-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 173 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
348 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
173 m²/s²
0-3 km storm-relative helicity
192 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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, Jun 6, 1:40 PM EDT, 23 minutes before
PAZ012-037-038-041-042-045-046-049>052-061840-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
140 PM EDT MON JUN 6 1994

...SEVERE THUNDERSTORM WARNING FOR CLINTON COUNTY HAS EXPIRED...

AT 135 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
STRONG THUNDERSTORMS THAT EXTENDED FROM NEAR WATSONTOWN AND LEWISBURG
THEN TO STATE COLLEGE. STRONG AND POSSIBLE SEVERE THUNDERSTORMS WERE
OVER NORTHERN UNION COUNTY.  ELSEWHERE LIGHT TO MODERATE SHOWERS
EXTENDED FROM CENTRAL BRADFORD COUNTY THROUGH EASTERN LYCOMING COUNTY.
THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 35 MPH.

THOSE STRONG THUNDERSTORMS OVER NORTHERN UNION COUNTY WILL BE MOVING
INTO NORTHERN NORTHUMBERLAND COUNTY BY 145 PM EDT.

PERSONS IN THE PATH OF THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR
THREATENING WEATHER AND TAKE SHELTER IF THREATENING WEATHER
APPROACHES.  REMEMBER THE SAFEST PLACE TO BE IN A THUNDERSTORM IS
INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

GOUGH/JOHNSON
Special weather statement, Jun 6, 1:40 PM EDT, 23 minutes before
PAZ012-037-038-041-042-045-046-049>052-061840-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILLIAMSPORT PA
140 PM EDT MON JUN 6 1994

...SEVERE THUNDERSTORM WARNING FOR CLINTON COUNTY HAS EXPIRED...

AT 135 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
STRONG THUNDERSTORMS THAT EXTENDED FROM NEAR WATSONTOWN AND LEWISBURG
THEN TO STATE COLLEGE. STRONG AND POSSIBLE SEVERE THUNDERSTORMS WERE
OVER NORTHERN UNION COUNTY.  ELSEWHERE LIGHT TO MODERATE SHOWERS
EXTENDED FROM CENTRAL BRADFORD COUNTY THROUGH EASTERN LYCOMING COUNTY.
THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 35 MPH.

THOSE STRONG THUNDERSTORMS OVER NORTHERN UNION COUNTY WILL BE MOVING
INTO NORTHERN NORTHUMBERLAND COUNTY BY 145 PM EDT.

PERSONS IN THE PATH OF THESE THUNDERSTORMS SHOULD REMAIN ALERT FOR
THREATENING WEATHER AND TAKE SHELTER IF THREATENING WEATHER
APPROACHES.  REMEMBER THE SAFEST PLACE TO BE IN A THUNDERSTORM IS
INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS.

GOUGH/JOHNSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 12:54 PM EDTSevere Thunderstorm WarningCTPClinton36 min
Jun 6, 1:07 PM EDTSevere Thunderstorm WarningCTPUnion53 min
Jun 6, 1:24 PM EDTTornado WarningCTPUnion51 min
Jun 6, 1:34 PM EDTSevere Thunderstorm WarningCTPCentre26 min
Jun 6, 2:13 PM EDTSevere Thunderstorm WarningCTPHuntingdon62 min
Jun 6, 2:52 PM EDTSevere Thunderstorm WarningCTPNorthumberland68 min
Jun 6, 2:59 PM EDTSevere Thunderstorm WarningCTPSchuylkill61 min
Jun 6, 3:02 PM EDTTornado WarningCTPJuniata58 min
Jun 6, 3:08 PM EDTSevere Thunderstorm WarningCTPCumberland67 min
Jun 6, 3:15 PM EDTSevere Thunderstorm WarningCTPPerry60 min
Jun 6, 3:48 PM EDTSevere Thunderstorm WarningCTPLebanon42 min
Jun 6, 3:59 PM EDTTornado WarningCTPLebanon31 min
Jun 6, 4:07 PM EDTTornado WarningCTPBerks38 min
Jun 6, 4:32 PM EDTTornado WarningCTPBerks43 min
Jun 6, 5:20 PM EDTSevere Thunderstorm WarningCTPLancaster55 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 1994Every severe thunderstorm warning in 1994

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.