Alert archive / Pennsylvania / Special Weather Statements in 2011

Special Weather Statement, NWS State College, PA

July 20, 2011Franklin County, Pennsylvania

NWS State College, PA issued this special weather statement at Jul 20, 2011, 12:27 AM EDT for Franklin County, Pennsylvania. It was in force for 48 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 20, 2011, 12:27 AM EDT (04:27 UTC)
Expired: Jul 20, 2011, 1:15 AM EDT
In force: 48 min
Issued by: NWS State College, PA

County Franklin County, PA

The radar

The Sterling radar (KLWX), 108 km from the middle of the area, began a volume at 04:27 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 00:00Z, 4.5 hours before the alert went out and 113 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: 2824 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

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 Jul 19, 10:40 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Jul 19, 10:40 PM EDT, 1 hour 47 minutes before

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Hazardous weather outlook, Jul 19, 10:34 PM EDT, 1 hour 53 minutes before

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In the hours before

Special weather statement, Jul 19, 6:31 PM EDT, 5 hours 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
631 PM EDT TUE JUL 19 2011

PAZ042-046-053-192300-
COLUMBIA PA-SOUTHERN LYCOMING PA-SULLIVAN PA-
631 PM EDT TUE JUL 19 2011

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL LYCOMING...NORTHERN
COLUMBIA AND SOUTH CENTRAL SULLIVAN COUNTIES...

AT 624 PM EDT...A STRONG THUNDERSTORM WAS NEAR BIGGERTOWN...MOVING
SOUTHEAST AT 20 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL BE NEAR FAIRMOUNT SPGS AROUND 645 PM.

LAT...LON 4106 7635 4131 7668 4133 7666 4131 7660
      4134 7664 4141 7652 4134 7629 4131 7631
      4121 7632 4114 7628

FORECASTER: KF

Special weather statement, Jul 19, 6:34 PM EDT, 5 hours 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
634 PM EDT TUE JUL 19 2011

PAZ018-019-192300-
NORTHERN CENTRE PA-SOUTHERN CENTRE PA-
634 PM EDT TUE JUL 19 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL CENTRE COUNTY...

AT 629 PM EDT...A STRONG THUNDERSTORM WAS 9 MILES NORTHEAST OF SNOW
SHOE...MOVING SOUTH AT 15 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL ARE POSSIBLE WITH THIS STORM.
THIS STORM WILL BE NEAR MILESBURG AROUND 700 PM.

LAT...LON 4118 7789 4118 7780 4115 7779 4113 7777
      4111 7774 4111 7770 4094 7763 4089 7792
      4117 7797 4119 7790

FORECASTER: KF

Special weather statement, Jul 19, 7:42 PM EDT, 4 hours 45 minutes before

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Special weather statement, Jul 19, 8:01 PM EDT, 4 hours 26 minutes before

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Special weather statement, Jul 20, 12:27 AM 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
Jul 19, 8:01 PM EDT	Special Weather Statement	CTP	Lancaster	14 min
Jul 20, 12:34 AM EDT	Areal Flood Advisory	CTP	Franklin	116 min
Jul 20, 3:59 AM EDT	Excessive Heat Watch	CTP	Adams, Columbia, Cumberland, Dauphin, Franklin, Juniata and 10 more	10 hr
Jul 20, 1:43 PM EDT	Excessive Heat Warning	CTP	Adams, Clinton, Columbia, Cumberland, Dauphin, Franklin and 12 more	30 hr
Jul 20, 1:43 PM EDT	Excessive Heat Warning	CTP	Adams, Clinton, Columbia, Cumberland, Dauphin, Franklin and 12 more	54 hr
Jul 20, 1:43 PM EDT	Heat Advisory	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 11 more	30 hr
Jul 20, 1:43 PM EDT	Heat Advisory	CTP	Bedford, Blair, Centre, Clinton, Fulton, Huntingdon and 2 more	54 hr

Nearby

Special Weather Statements in Pennsylvania, 2011 Every special weather statement in 2011

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.