Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

August 1, 2012Adams County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 1, 2012, 6:32 PM EDT for Adams County, 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, 2012, 6:32 PM EDT (22:32 UTC)
Expired
Aug 1, 2012, 7:00 PM EDT
In force
28 min
Issued by
NWS State College, PA

County Adams County, PA

The radar

The Sterling radar (KLWX), 94 km from the middle of the area, began a volume at 22:31 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 12:00Z, 10.5 hours before the alert went out and 94 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 2012-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 228 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 2012-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
228 J/kg
Mixed-layer CIN
-103 J/kg
Mixed-layer LCL
870 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 1, 5:35 PM EDT, 57 minutes earlier.

Area forecast discussion, Aug 1, 5:35 PM EDT, 57 minutes before
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Hazardous weather outlook, Aug 1, 5:57 AM EDT, 12 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE STATE COLLEGE PA
557 AM EDT WED AUG 1 2012

PAZ004>006-010>012-017>019-024>028-033>037-041-042-045-046-049>053-
056>059-063>066-021000-
WARREN-MCKEAN-POTTER-ELK-CAMERON-NORTHERN CLINTON-CLEARFIELD-
NORTHERN CENTRE-SOUTHERN CENTRE-CAMBRIA-BLAIR-HUNTINGDON-MIFFLIN-
JUNIATA-SOMERSET-BEDFORD-FULTON-FRANKLIN-TIOGA-NORTHERN LYCOMING-
SULLIVAN-SOUTHERN CLINTON-SOUTHERN LYCOMING-UNION-SNYDER-MONTOUR-
NORTHUMBERLAND-COLUMBIA-PERRY-DAUPHIN-SCHUYLKILL-LEBANON-CUMBERLAND-
ADAMS-YORK-LANCASTER-
557 AM EDT WED AUG 1 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL PENNSYLVANIA.

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WARMER AND MORE HUMID AIR WILL ACCOMPANY A WARM FRONT AS IT PUSHES
NORTHEAST ACROSS THE REGION SATURDAY. SCATTERED STRONG TO
POTENTIALLY SEVERE THUNDERSTORMS WILL LIKELY DEVELOP DURING THE
AFTERNOON AND EVENING HOURS SATURDAY.

ANOTHER ROUND OF STRONG...TO POSSIBLY SEVERE THUNDERSTORMS WILL
FORM ALONG AND IN ADVANCE OF A POTENT COLD FRONT LATE SUNDAY
AFTERNOON AND EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED OVER THE UPCOMING WEEKEND.

LAMBERT

In the hours before

Special weather statement, Aug 1, 3:14 PM EDT, 3 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
314 PM EDT WED AUG 1 2012

PAZ034-035-011945-
BEDFORD PA-FULTON PA-
314 PM EDT WED AUG 1 2012

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL BEDFORD AND FULTON
COUNTIES...

AT 308 PM EDT...A STRONG THUNDERSTORM WAS NEAR SIDELING HILL REST
AREA...MOVING SOUTHEAST AT 10 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
EXPECT INTENSE LIGHTNING FROM THIS STORM. DO NOT STAY IN THE OPEN NOR
SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN
A THUNDERSTORM APPROACHES. THIS STORM WILL AFFECT SIDELING HILL REST
AREA...SALUVIA...HARRISSONVILLE AND MCCONNELLSBURG.

LAT...LON 3980 7821 4002 7837 4014 7809 4012 7802
      3998 7792 3995 7794 3993 7796 3992 7795
      3988 7797

FORECASTER: KF
Special weather statement, Aug 1, 4:28 PM EDT, 2 hours 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
428 PM EDT WED AUG 1 2012

PAZ036-012100-
FRANKLIN PA-
428 PM EDT WED AUG 1 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN FRANKLIN COUNTY...

AT 420 PM EDT...A STRONG THUNDERSTORM WAS NEAR MERCERSBURG...MOVING
SOUTHEAST AT 15 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT GREENCASTLE.

LAT...LON 3973 7796 4003 7774 3972 7758 3972 7800

FORECASTER: KF
Special weather statement, Aug 1, 5:03 PM EDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
503 PM EDT WED AUG 1 2012

PAZ028-050-056-012130-
JUNIATA PA-PERRY PA-SNYDER PA-
503 PM EDT WED AUG 1 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN JUNIATA...
NORTHEASTERN PERRY AND SOUTHWESTERN SNYDER COUNTIES...

AT 456 PM EDT...A STRONG THUNDERSTORM WAS NEAR MCCLURE...MOVING
SOUTHEAST AT 15 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT RICHFIELD AND MILLERSTOWN.

LAT...LON 4064 7741 4066 7740 4069 7730 4070 7736
      4079 7728 4064 7694 4041 7723

FORECASTER: KF
Special weather statement, Aug 1, 6:32 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
632 PM EDT WED AUG 1 2012

PAZ064-012300-
ADAMS PA-
632 PM EDT WED AUG 1 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTH CENTRAL ADAMS COUNTY...

AT 625 PM EDT...A STRONG THUNDERSTORM WAS NEAR GERMANTOWN...MOVING
SOUTH AT 10 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT GERMANTOWN AND LITTLESTOWN.

LAT...LON 3983 7730 3986 7709 3972 7701 3972 7702
      3972 7728

FORECASTER: KF

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 8:28 PM EDTSpecial Weather StatementCTPCameron, Tioga32 min
Jul 31, 8:56 PM EDTSpecial Weather StatementCTPClinton, Lycoming34 min
Jul 31, 9:05 PM EDTSpecial Weather StatementCTPClinton, Lycoming25 min
Jul 31, 9:26 PM EDTSpecial Weather StatementCTPCentre, Clinton, Lycoming34 min
Jul 31, 9:58 PM EDTSpecial Weather StatementCTPCentre, Clinton, Lycoming, Sullivan32 min
Jul 31, 11:42 PM EDTSpecial Weather StatementCTPElk63 min
Aug 1, 12:24 AM EDTSpecial Weather StatementCTPLancaster66 min
Aug 1, 12:35 AM EDTSpecial Weather StatementCTPBlair55 min
Aug 1, 1:16 AM EDTFlash Flood WarningCTPDauphin, Juniata, Northumberland, Schuylkill, Snyder2 hr
Aug 1, 3:14 PM EDTSpecial Weather StatementCTPFulton31 min
Aug 1, 3:38 PM EDTSevere Thunderstorm WarningCTPBedford, Franklin, Fulton67 min
Aug 1, 4:28 PM EDTSpecial Weather StatementCTPFranklin32 min
Aug 1, 5:03 PM EDTSpecial Weather StatementCTPSnyder27 min
Aug 1, 7:54 PM EDTSpecial Weather StatementCTPLancaster21 min

Nearby

Special Weather Statements in Pennsylvania, 2012Every special weather statement in 2012

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.