Alert archive / Pennsylvania / Wind Chill Advisories in 2019

Wind Chill Advisory 1, NWS State College, PA

January 20, 201926 counties in Pennsylvania

NWS State College, PA issued this wind chill advisory at Jan 20, 2019, 4:06 AM EST for 26 counties in Pennsylvania. It took effect at Jan 20, 2019, 7:00 PM EST. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Jan 20, 2019, 4:06 AM EST (09:06 UTC)
In effect from: Jan 20, 2019, 7:00 PM EST
Expired: Jan 21, 2019, 1:00 PM EST
In force: 18 hr
Issued by: NWS State College, PA

All 26 counties

Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Somerset County, PA, Union County, PA, York County, PA

The radar

The State College radar (KCCX), 68 km from the middle of the area, began a volume at 09:09 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 (KAGC), launched 00:00Z, 9.1 hours before the alert went out and 228 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 448 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 557 m²/s²
0-3 km storm-relative helicity: 588 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory 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 wind chill advisory went out at Jan 19, 6:57 PM EST, 9 hours 9 minutes earlier.

Area forecast discussion, Jan 19, 6:57 PM EST, 9 hours 9 minutes before

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Hazardous weather outlook, Jan 19, 2:33 PM EST, 13 hours 33 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
Jan 20, 4:06 AM EST	Wind Chill Warning	CTP	Cambria, Cameron, Clinton, Elk, Lycoming, McKean and 5 more	39 hr

Nearby

Wind Chill Advisories in Pennsylvania, 2019 Every wind chill advisory in 2019

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.