Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

January 3, 2012Blair County, Clearfield County, Huntingdon County, Pennsylvania

NWS State College, PA issued this special weather statement at Jan 3, 2012, 11:28 AM EST for Blair County, Clearfield County, Huntingdon County, Pennsylvania. It was in force for 62 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: Jan 3, 2012, 11:28 AM EST (16:28 UTC)
Expired: Jan 3, 2012, 12:30 PM EST
In force: 62 min
Issued by: NWS State College, PA

Counties Blair County, PA, Clearfield County, PA, Huntingdon County, PA

The radar

The State College radar (KCCX), 42 km from the middle of the area, began a volume at 16:26 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, 4.5 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 655 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 198 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 Jan 3, 11:22 AM EST, 6 minutes earlier.

Area forecast discussion, Jan 3, 11:22 AM EST, 6 minutes before

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Hazardous weather outlook, Jan 3, 11:19 AM EST, 9 minutes before

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In the hours before

Special weather statement, Jan 3, 6:49 AM EST, 4 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
649 AM EST TUE JAN 3 2012

PAZ024>026-031300-
BLAIR PA-CAMBRIA PA-HUNTINGDON PA-
649 AM EST TUE JAN 3 2012

...A BAND OF SNOW SQUALLS WILL DRIFT SOUTH AND AFFECT CENTRAL
CAMBRIA...SOUTHERN BLAIR AND SOUTHWESTERN HUNTINGDON COUNTIES
THROUGH 8 AM EST...

AT 642 AM EST...A 4 TO 8 MILE WIDE BAND OF SNOW SQUALLS WAS LOCATED
FROM 6 MILES EAST OF CLYMER TO TROUGH CREEK STATE PARK...MOVING
SOUTHEAST AT 20 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS SNOW SQUALL. THE SNOW
WILL RAPIDLY DROP VISIBILITIES IN THIS SNOW SQUALL TO NEAR ZERO. THE
SNOW WILL FALL ONTO WARM ROAD SURFACES...WHICH WILL CAUSE IT TO
QUICKLY MELT AND THEN RE-FREEZE. THIS COULD CREATE VERY ICY
CONDITIONS IF THE ROAD SURFACE IS UNTREATED. THIS SNOW SQUALL WILL
AFFECT ALTOONA...HOLLIDAYSBURG...BELSANO...COLVER...EBENSBURG...
LILLY AND BROAD TOP CITY.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE NEAR MILE MARKER 186...I-99 BETWEEN MILE
MARKERS 18 AND 32.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 22...ROUTE
219...ROUTE 220...ROUTE 422.

BE ESPECIALLY CAUTIOUS IF YOU MUST TRAVEL INTO OR THROUGH THIS
POTENTIALLY DANGEROUS SNOW SQUALL.

LAT...LON 4023 7824 4029 7826 4027 7827 4025 7829
      4047 7891 4050 7892 4068 7884 4037 7809
      4008 7785

FORECASTER: LAMBERT

Special weather statement, Jan 3, 7:49 AM EST, 3 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
749 AM EST TUE JAN 3 2012

PAZ024>026-034>036-031345-
BEDFORD PA-BLAIR PA-CAMBRIA PA-FRANKLIN PA-FULTON PA-HUNTINGDON PA-
749 AM EST TUE JAN 3 2012

...A BAND OF SNOW SQUALLS WILL DRIFT SOUTH AND AFFECT CENTRAL
CAMBRIA...NORTHEASTERN BEDFORD...NORTHEASTERN FULTON...NORTHERN
FRANKLIN...SOUTHERN BLAIR AND SOUTHERN HUNTINGDON COUNTIES...

AN AREA OF SNOW SQUALLS COVERED PORTIONS OF BEDFORD...BLAIR...
CAMBRIA...FRANKLIN...FULTON AND HUNTINGDON COUNTIES AT 742 AM EST.
THE SNOW SQUALLS WERE GENERALLY MOVING SOUTHEAST AT 20 MPH.

THE SNOW WILL RAPIDLY DROP VISIBILITIES IN THESE SNOW SQUALLS TO
LESS THAN A QUARTER OF A MILE. WIND GUSTS TO 30 MPH ARE POSSIBLE
WITH THESE SNOW SQUALLS.

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 181 AND 196...I-81 NEAR
MILE MARKER 25...I-99 BETWEEN MILE MARKERS 15 AND 36.

LAT...LON 4003 7788 4038 7877 4046 7894 4069 7883
      4060 7845 4025 7782 4002 7751

FORECASTER: DEVOIR

Special weather statement, Jan 3, 8:50 AM EST, 2 hours 38 minutes before

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Special weather statement, Jan 3, 11:28 AM EST, 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
Jan 2, 7:30 PM EST	Special Weather Statement	CTP	Blair, Cambria, Huntingdon	30 min
Jan 2, 9:37 PM EST	Special Weather Statement	CTP	Clinton, Union	53 min
Jan 2, 10:15 PM EST	Special Weather Statement	CTP	Cameron, Clearfield, Elk	60 min
Jan 2, 10:24 PM EST	Winter Storm Warning	CTP	Cambria, Somerset	21 hr
Jan 3, 3:45 AM EST	Special Weather Statement	CTP	Clearfield	45 min
Jan 3, 5:03 AM EST	Special Weather Statement	CTP	Huntingdon	42 min
Jan 3, 6:49 AM EST	Special Weather Statement	CTP	Cambria	71 min
Jan 3, 7:49 AM EST	Special Weather Statement	CTP	Blair, Cambria	56 min
Jan 3, 8:50 AM EST	Special Weather Statement	CTP	Cambria	55 min
Jan 3, 12:38 PM EST	Special Weather Statement	CTP	Clearfield	67 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.