Alert archive / Pennsylvania / Extreme Cold Warnings in 2025

Extreme Cold Warning 1, NWS State College, PA

January 19, 2025Cambria County, Somerset County, Pennsylvania

NWS State College, PA issued this extreme cold warning at Jan 19, 2025, 3:38 AM EST for Cambria County, Somerset County, Pennsylvania. It took effect at Jan 20, 2025, 7:00 PM EST. It was in force for 41 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 19, 2025, 3:38 AM EST (08:38 UTC)
In effect from
Jan 20, 2025, 7:00 PM EST
Expired
Jan 22, 2025, 12:00 PM EST
In force
41 hr
Issued by
NWS State College, PA

Counties Cambria County, PA, Somerset County, PA

The radar

The State College radar (KCCX), 106 km from the middle of the area, began a volume at 08:37 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

Buffalo Intl Airport, NY (KBUF), launched 00:00Z, 8.6 hours before the alert went out and 300 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 00:00Z on 2025-01-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2025-01-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -161 square meters per square second.1939587897117136156175194214Sfc1 km3 km6 km9 kmRMLM
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
443 m above ground
0-6 km bulk shear
142 kt
0-1 km storm-relative helicity
-161 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 19, 3:38 AM ESTCold Weather AdvisoryCTPAdams, Bedford, Blair, Cambria, Cameron, Centre and 27 more3 days
Jan 19, 12:58 PM ESTSpecial Weather StatementCTPBedford, Fulton, Huntingdon, Juniata, Mifflin62 min
Jan 19, 1:52 PM ESTSpecial Weather StatementCTPBedford, Fulton, Huntingdon, Juniata, Mifflin, Perry and 1 more53 min

Nearby

Extreme Cold Warnings in Pennsylvania, 2025Every extreme cold warning in 2025

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.