Alert archive / Pennsylvania / Special Weather Statements in 2017

Special Weather Statement, NWS State College, PA

July 13, 2017Schuylkill County, Pennsylvania

NWS State College, PA issued this special weather statement at Jul 13, 2017, 4:08 PM EDT for Schuylkill County, Pennsylvania. It was in force for 52 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 13, 2017, 4:08 PM EDT (20:08 UTC)
Expired: Jul 13, 2017, 5:00 PM EDT
In force: 52 min
Issued by: NWS State College, PA

County Schuylkill County, PA

The radar

The State College radar (KCCX), 157 km from the middle of the area, began a volume at 20:12 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 12:00Z, 8.1 hours before the alert went out and 216 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: 135 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 1715 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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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 13, 3:26 PM EDT, 42 minutes earlier.

Area forecast discussion, Jul 13, 3:26 PM EDT, 42 minutes before

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Hazardous weather outlook, Jul 13, 3:11 PM EDT, 57 minutes before

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In the hours before

Special weather statement, Jul 13, 2:03 PM EDT, 2 hours 5 minutes before

Special Weather Statement
National Weather Service State College PA
203 PM EDT THU JUL 13 2017

PAZ019-027-131830-
Mifflin PA-Southern Centre PA-
203 PM EDT THU JUL 13 2017

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF  MIFFLIN AND SOUTHERN
CENTRE COUNTIES UNTIL 230 PM EDT...

At 202 PM EDT, Doppler radar indicated a strong thunderstorm over
Boalsburg, moving east at 30 mph.

Wind gusts of 40 to 50 mph are possible.

Locations impacted include...
Potters Mills, Milroy, Seven Mountains, Poe Valley State Park, Reeds
Gap State Park, Centre Hall, and Reedsville.

LAT...LON 4067 7769 4068 7768 4069 7771 4072 7768
      4073 7768 4079 7781 4084 7778 4084 7736
      4074 7736 4067 7754
TIME...MOT...LOC 1802Z 289DEG 25KT 4080 7773

Dangelo

Special weather statement, Jul 13, 2:51 PM EDT, 1 hour 17 minutes before

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Special weather statement, Jul 13, 3:16 PM EDT, 52 minutes before

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Special weather statement, Jul 13, 3:38 PM EDT, 30 minutes before

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Special weather statement, Jul 13, 4:08 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
Jul 13, 1:19 AM EDT	Special Weather Statement	CTP	Warren	56 min
Jul 13, 2:32 AM EDT	Special Weather Statement	CTP	McKean	58 min
Jul 13, 2:03 PM EDT	Special Weather Statement	CTP	Mifflin	27 min
Jul 13, 2:09 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Mifflin, Snyder	36 min
Jul 13, 2:43 PM EDT	Severe Thunderstorm Warning	CTP	Juniata, Mifflin, Perry, Snyder	47 min
Jul 13, 2:51 PM EDT	Special Weather Statement	CTP	Montour, Northumberland, Union	39 min
Jul 13, 3:16 PM EDT	Special Weather Statement	CTP	Dauphin	44 min
Jul 13, 3:38 PM EDT	Special Weather Statement	CTP	Schuylkill	37 min
Jul 13, 6:54 PM EDT	Areal Flood Advisory	CTP	Dauphin, Lebanon, Northumberland, Schuylkill	2 hr

Nearby

Special Weather Statements in Pennsylvania, 2017 Every special weather statement in 2017

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.