Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS State College, PA

August 1, 20114 counties in Pennsylvania

NWS State College, PA issued this special weather statement at Aug 1, 2011, 8:02 PM EDT for 4 counties in Pennsylvania. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 1, 2011, 8:02 PM EDT (00:02 UTC)
Expired
Aug 1, 2011, 8:30 PM EDT
In force
28 min
Issued by
NWS State College, PA

Counties Adams County, PA, Cumberland County, PA, Huntingdon County, PA, Mifflin County, PA

The radar

The State College radar (KCCX), 104 km from the middle of the area, began a volume at 00:05 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

Washington/Dulle, VA (KIAD), launched 00:00Z, 0.0 hours before the alert went out and 133 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 00:00Z on 2011-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 644 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 00:00Z on 2011-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
644 J/kg
Mixed-layer CIN
-121 J/kg
Mixed-layer LCL
1789 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

903 
WWUS81 KCTP 020002
SPSCTP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
802 PM EDT MON AUG 1 2011

PAZ026>028-036-056-063-064-020030-
ADAMS PA-CUMBERLAND PA-FRANKLIN PA-HUNTINGDON PA-JUNIATA PA-
MIFFLIN PA-PERRY PA-
802 PM EDT MON AUG 1 2011

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT ADAMS...CUMBERLAND...
NORTHEASTERN FRANKLIN...NORTHEASTERN HUNTINGDON...SOUTHWESTERN
JUNIATA...SOUTHWESTERN MIFFLIN AND SOUTHWESTERN PERRY COUNTIES...

AT 756 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
MCALEVYS FORT TO LITTLESTOWN...MOVING SOUTH AT 15 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
THESE STORMS WILL BE NEAR LITTLESTOWN AROUND 810 PM...GERMANTOWN
AROUND 820 PM AND SEVEN STARS AROUND 830 PM.

LAT...LON 4045 7800 4074 7784 4072 7778 4073 7772
      4013 7705 4007 7713 4002 7703 3994 7697
      3992 7697 3989 7699 3986 7695 3983 7700
      3972 7701 3972 7729

$$

FORECASTER: KF

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:31 PM EDTSpecial Weather StatementCTPAdams29 min
Aug 1, 10:20 PM EDTSpecial Weather StatementCTPTioga55 min
Aug 1, 11:10 PM EDTSpecial Weather StatementCTPSullivan65 min

Nearby

Special Weather Statements in Pennsylvania, 2011Every special weather statement in 2011

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.