Alert archive / Pennsylvania / Special Weather Statements in 2018

Special Weather Statement, NWS State College, PA

October 11, 2018Lancaster County, York County, Pennsylvania

NWS State College, PA issued this special weather statement at Oct 11, 2018, 3:07 PM EDT for Lancaster County, York County, 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: Oct 11, 2018, 3:07 PM EDT (19:07 UTC)
Expired: Oct 11, 2018, 4:00 PM EDT
In force: 53 min
Issued by: NWS State College, PA

Counties Lancaster County, PA, York County, PA

The radar

The Sterling radar (KLWX), 132 km from the middle of the area, began a volume at 19:10 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, 7.1 hours before the alert went out and 131 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: 435 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 461 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 187 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.0

Open this sounding in Storm Lab

The text

As transmitted.

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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
Oct 11, 10:07 AM EDT	Areal Flood Advisory	CTP	Columbia, Montour, Northumberland	3 hr
Oct 11, 10:12 AM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	3 hr
Oct 11, 11:22 AM EDT	Areal Flood Advisory	CTP	Columbia, Schuylkill	3 hr
Oct 11, 1:13 PM EDT	Areal Flood Advisory	CTP	Bedford, Cumberland, Franklin, Fulton	3 hr

Nearby

Special Weather Statements in Pennsylvania, 2018 Every special weather statement in 2018

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.