Alert archive / Pennsylvania / Special Weather Statements in 2012

Special Weather Statement, NWS State College, PA

July 4, 20124 counties in Pennsylvania

NWS State College, PA issued this special weather statement at Jul 4, 2012, 12:07 AM EDT for 4 counties in Pennsylvania. It was in force for 53 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: Jul 4, 2012, 12:07 AM EDT (04:07 UTC)
Expired: Jul 4, 2012, 1:00 AM EDT
In force: 53 min
Issued by: NWS State College, PA

Counties Bedford County, PA, Franklin County, PA, Fulton County, PA, Somerset County, PA

The radar

The State College radar (KCCX), 108 km from the middle of the area, began a volume at 04:08 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, 4.1 hours before the alert went out and 134 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: 389 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1500 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 172 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

562 
WWUS81 KCTP 040407
SPSCTP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
1207 AM EDT WED JUL 4 2012

PAZ024>026-033>036-040500-
BEDFORD PA-BLAIR PA-CAMBRIA PA-FRANKLIN PA-FULTON PA-HUNTINGDON PA-
SOMERSET PA-
1207 AM EDT WED JUL 4 2012

...A LINE OF SHOWERS AND THUNDERSTORMS WILL AFFECT 
BEDFORD...FRANKLIN...FULTON...NORTHERN SOMERSET...SOUTHERN 
BLAIR...SOUTHERN HUNTINGDON AND SOUTHWESTERN CAMBRIA COUNTIES...

AT 1203 AM EDT...A LINE OF SHOWERS AND THUNDERSTORMS WAS LOCATED 
FROM MARKLESBURG TO CLAYSBURG TO JEROME TO GREENSBURG...MOVING 
SOUTHEAST AT 35 MPH.

WIND GUSTS BETWEEN 30 TO 40 MPH ARE POSSIBLE WITH THESE STORMS. 
EXPECT OCCASIONAL LIGHTNING AND LOCALLY HEAVY RAINFALL FROM THESE 
STORMS. 

THIS WILL IMPACT THE FOLLOWING CENTRAL PENNSYLVANIA INTERSTATES...THE
PENNSYLVANIA TURNPIKE BETWEEN MILE MARKERS 100 AND 195...I-70 BETWEEN
MILE MARKERS 147 AND 166...I-81 BETWEEN MILE MARKERS 11 AND 23...I-99
BETWEEN MILE MARKERS 0 AND 23.

THIS WILL ALSO IMPACT THE FOLLOWING MAJOR ROADS...ROUTE 11...ROUTE
30...ROUTE 219...ROUTE 220...ROUTE 522.

LAT...LON 3989 7895 4007 7927 4012 7921 4013 7918
      4015 7917 4028 7906 4034 7856 4047 7813
      3995 7747 3993 7747 3981 7788 3975 7841

$$

FORECASTER: STEINBUGL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 3, 8:03 PM EDT	Special Weather Statement	CTP	Warren	72 min
Jul 3, 8:37 PM EDT	Severe Thunderstorm Warning	CTP	Warren	38 min
Jul 3, 9:50 PM EDT	Special Weather Statement	CTP	Clearfield, Elk	55 min
Jul 3, 10:36 PM EDT	Special Weather Statement	CTP	Cambria, Centre, Clearfield	54 min
Jul 3, 11:36 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Centre, Huntingdon, Mifflin	29 min
Jul 4, 2:27 AM EDT	Special Weather Statement	CTP	Somerset	63 min
Jul 4, 11:06 AM EDT	Special Weather Statement	CTP	McKean, Warren	69 min
Jul 4, 11:27 AM EDT	Severe Thunderstorm Warning	CTP	Warren	48 min
Jul 4, 11:53 AM EDT	Special Weather Statement	CTP	McKean	37 min
Jul 4, 5:34 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Cambria, Somerset	41 min
Jul 4, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	54 min
Jul 4, 6:16 PM EDT	Special Weather Statement	CTP	Centre	44 min
Jul 4, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	50 min
Jul 4, 7:15 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	45 min
Jul 4, 7:33 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Fulton, Somerset	42 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.