Alert archive / Pennsylvania / Snow Squall Warnings in 2024

Snow Squall Warning 34, NWS State College, PA

December 5, 20245 counties in Pennsylvania

NWS State College, PA issued this snow squall warning at Dec 5, 2024, 4:49 AM EST for 5 counties in Pennsylvania. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 5, 2024, 4:49 AM EST (09:49 UTC)
Expired
Dec 5, 2024, 5:45 AM EST
In force
56 min
Issued by
NWS State College, PA
Area
Storm-based polygon

Counties Centre County, PA, Clinton County, PA, Lycoming County, PA, Northumberland County, PA, Union County, PA

The radar

The State College radar (KCCX), 64 km from the middle of the area, began a volume at 09:53 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 (KPIT), launched 00:00Z, 9.8 hours before the alert went out and 250 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, Pittsburgh, PA at 00:00Z on 2024-12-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Pittsburgh, PA at 00:00Z on 2024-12-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 513 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1193 m above ground
0-6 km bulk shear
69 kt
0-1 km storm-relative helicity
513 m²/s²
0-3 km storm-relative helicity
538 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
Dec 5, 12:22 AM ESTSpecial Weather StatementCTPClearfield53 min
Dec 5, 12:58 AM ESTSpecial Weather StatementCTPCambria, Somerset62 min
Dec 5, 1:28 AM ESTSpecial Weather StatementCTPBlair32 min
Dec 5, 1:52 AM ESTSnow Squall WarningCTPBlair, Centre, Huntingdon23 min
Dec 5, 1:56 AM ESTSpecial Weather StatementCTPBedford49 min
Dec 5, 2:09 AM ESTSpecial Weather StatementCTPBedford, Huntingdon, Mifflin21 min
Dec 5, 2:35 AM ESTSpecial Weather StatementCTPFranklin, Fulton, Huntingdon, Juniata, Mifflin, Perry and 1 more40 min
Dec 5, 3:10 AM ESTSpecial Weather StatementCTPColumbia, Montour, Northumberland50 min
Dec 5, 3:12 AM ESTSpecial Weather StatementCTPAdams, Cumberland, Dauphin, Franklin, Perry, Snyder48 min
Dec 5, 3:55 AM ESTSpecial Weather StatementCTPLancaster, Lebanon, Schuylkill, York65 min
Dec 5, 3:56 AM ESTSpecial Weather StatementCTPClearfield64 min
Dec 5, 4:38 AM ESTSpecial Weather StatementCTPCameron, Centre, Clinton, Lycoming, Potter, Tioga67 min
Dec 5, 5:07 AM ESTSpecial Weather StatementCTPBlair, Huntingdon53 min
Dec 5, 5:48 AM ESTSpecial Weather StatementCTPColumbia, Lycoming, Montour, Northumberland, Snyder, Sullivan and 1 more72 min
Dec 5, 6:23 AM ESTSpecial Weather StatementCTPCentre, Clearfield, Clinton, Union52 min
Dec 5, 7:21 AM ESTSpecial Weather StatementCTPCentre, Clinton54 min
Dec 5, 7:36 AM ESTSpecial Weather StatementCTPColumbia, Montour54 min

Nearby

Snow Squall Warnings in Pennsylvania, 2024Every snow squall warning in 2024

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.