Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

January 3, 2012Clearfield County, Pennsylvania

NWS State College, PA issued this special weather statement at Jan 3, 2012, 3:45 AM EST for Clearfield County, Pennsylvania. It was in force for 45 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, 3:45 AM EST (08:45 UTC)
Expired: Jan 3, 2012, 4:30 AM EST
In force: 45 min
Issued by: NWS State College, PA

County Clearfield County, PA

The radar

The State College radar (KCCX), 49 km from the middle of the area, began a volume at 08:45 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 00:00Z, 8.8 hours before the alert went out and 145 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: 873 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 97 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, 1:38 AM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Jan 3, 1:38 AM EST, 2 hours 7 minutes before

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Hazardous weather outlook, Jan 2, 10:28 PM EST, 5 hours 17 minutes before

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In the hours before

Special weather statement, Jan 2, 10:15 PM EST, 5 hours 30 minutes before

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Special weather statement, Jan 3, 3:45 AM EST, 0 minutes before

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

PAZ017>019-030930-
CLEARFIELD PA-NORTHERN CENTRE PA-SOUTHERN CENTRE PA-
345 AM EST TUE JAN 3 2012

...A SNOW SQUALL WILL AFFECT CLEARFIELD AND SOUTHWESTERN CENTRE
COUNTIES...

AT 340 AM EST...A SNOW SQUALL WAS LOCATED FROM BROOKVILLE TO 13 MILES
SOUTHEAST OF CLEARFIELD...MOVING SOUTHEAST AT 30 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS SNOW SQUALL. THE SNOW
WILL RAPIDLY DROP VISIBILITIES IN THIS SNOW SQUALL TO LESS THAN A
QUARTER OF A MILE. 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 DUBOIS...CLEARFIELD...OSCEOLA MILLS...
TROUTVILLE...SANDY RIDGE...GRAMPIAN AND HOUTZDALE.

THIS WILL IMPACT I-80 BETWEEN MILE MARKERS 97 AND 128.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 119...ROUTE
219...ROUTE 220...ROUTE 322...STATE ROAD 153...STATE ROAD 350.

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

LAT...LON 4113 7881 4120 7878 4121 7876 4121 7873
      4092 7806 4074 7811 4073 7832 4082 7881

FORECASTER: RXR

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, 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, 11:28 AM EST	Special Weather Statement	CTP	Blair, Clearfield, Huntingdon	62 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.