Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

August 9, 2012Potter County, Pennsylvania

NWS State College, PA issued this special weather statement at Aug 9, 2012, 9:18 PM EDT for Potter 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 outline as issued.

The facts

Issued: Aug 9, 2012, 9:18 PM EDT (01:18 UTC)
Expired: Aug 9, 2012, 10:15 PM EDT
In force: 57 min
Issued by: NWS State College, PA

County Potter County, PA

The radar

The State College radar (KCCX), 99 km from the middle of the area, began a volume at 01:21 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 1.3 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 260 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

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 9, 9:05 PM EDT, 13 minutes earlier.

Area forecast discussion, Aug 9, 9:05 PM EDT, 13 minutes before

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Hazardous weather outlook, Aug 9, 8:52 PM EDT, 26 minutes before

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In the hours before

Special weather statement, Aug 9, 7:01 PM EDT, 2 hours 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
701 PM EDT THU AUG 9 2012

PAZ058-059-100000-
LEBANON PA-SCHUYLKILL PA-
701 PM EDT THU AUG 9 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL LEBANON AND SCHUYLKILL
COUNTIES...

AT 655 PM EDT...A STRONG THUNDERSTORM WAS NEAR PINE GROVE...MOVING
NORTHEAST AT 15 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL AFFECT SUMMIT STATION...SCHUYLKILL HAVEN...
LANDINGVILLE...ORWIGSBURG AND NEW RINGGOLD.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...
I-78 BETWEEN MILE MARKERS 2 AND 8...I-81 BETWEEN MILE MARKERS 90 AND
139.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 22...ROUTE
209...ROUTE 422...STATE ROAD 61...STATE ROAD 309...STATE ROAD 501.

LAT...LON 4069 7583 4064 7598 4057 7601 4058 7605
      4051 7625 4051 7634 4049 7643 4038 7626
      4031 7641 4051 7658 4091 7605 4091 7602
      4073 7576

FORECASTER: MARTIN

Local storm report, Aug 9, 8:16 PM EDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
816 PM EDT THU AUG 09 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0810 PM     TSTM WND DMG     4 W ELDRED              41.96N  78.46W
08/09/2012                   MCKEAN             PA   911 CALL CENTER

            TREES DOWN.

&&

EVENT NUMBER CTP1200391

GAD

Special weather statement, Aug 9, 8:24 PM EDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
824 PM EDT THU AUG 9 2012

PAZ057-059-065-066-100115-
DAUPHIN PA-LANCASTER PA-LEBANON PA-YORK PA-
824 PM EDT THU AUG 9 2012

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL YORK...
NORTHWESTERN LANCASTER...SOUTH CENTRAL LEBANON AND SOUTHEASTERN
DAUPHIN COUNTIES...

AT 823 PM EDT...A LINE OF STRONG THUNDERSTORMS WAS LOCATED FROM
GOLDSBORO TO NEW SALEM TO SPRING GROVE...MOVING EAST AT 20 MPH.

THESE STORMS WILL PRODUCE PEA SIZE HAIL. THESE STORMS WILL AFFECT
MIDDLETOWN...ELIZABETHTOWN...LAWN...MOUNT JOY...MOUNT GRETNA AND
LANDISVILLE.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 250 AND 268...I-83 BETWEEN
MILE MARKERS 14 AND 27.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...STATE HIGHWAY
283...ROUTE 30...ROUTE 322.

LAT...LON 4033 7639 4000 7642 3991 7669 3988 7679
      3990 7678 4021 7674

FORECASTER: DEVOIR

Special weather statement, Aug 9, 8:32 PM EDT, 46 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
832 PM EDT THU AUG 9 2012

PAZ004>006-010-100130-
ELK PA-MCKEAN PA-POTTER PA-WARREN PA-
832 PM EDT THU AUG 9 2012

...A STRONG THUNDERSTORM WILL AFFECT MCKEAN...NORTH CENTRAL ELK...
NORTHWESTERN POTTER AND SOUTHEASTERN WARREN COUNTIES...

AT 829 PM EDT...A CLUSTER OF SHOWERS AND THUNDERSTORMS WAS MOVING
ACROSS MCKEAN COUNTY...TRACKING NORTHEAST AT 20 MPH.

WIND GUSTS TO 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THESE
STORMS...AS WELL AS HEAVY DOWNPOURS. THE RAIN WILL CAUSE WATER TO
POND ON ROADS AND FILL POOR DRAINAGE AREAS. THESE STORMS WILL AFFECT
THE FOLLOWING AREAS THROUGH 930 PM...CYCLONE...SMETHPORT...
REW...CORYVILLE...ELDRED AND SHINGLEHOUSE.

LAT...LON 4159 7860 4162 7918 4200 7878 4200 7800

FORECASTER: DEVOIR

Special weather statement, Aug 9, 8:53 PM EDT, 25 minutes before

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Special weather statement, Aug 9, 9:18 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 8:24 PM EDT	Special Weather Statement	CTP	York	51 min
Aug 9, 8:32 PM EDT	Special Weather Statement	CTP	McKean	58 min
Aug 9, 8:45 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon, Schuylkill, York	60 min
Aug 9, 8:53 PM EDT	Special Weather Statement	CTP	Columbia	37 min
Aug 10, 3:00 PM EDT	Special Weather Statement	CTP	Warren	60 min
Aug 10, 3:03 PM EDT	Special Weather Statement	CTP	McKean	42 min
Aug 10, 4:19 PM EDT	Special Weather Statement	CTP	Warren	71 min
Aug 10, 5:03 PM EDT	Special Weather Statement	CTP	Franklin	72 min
Aug 10, 5:34 PM EDT	Special Weather Statement	CTP	McKean	56 min
Aug 10, 6:09 PM EDT	Special Weather Statement	CTP	Franklin	66 min
Aug 10, 7:00 PM EDT	Special Weather Statement	CTP	York	45 min

Nearby

Special Weather Statements in Pennsylvania, 2012 Every 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.