Alert archive / Pennsylvania / Snow Squall Warnings in 2023

Snow Squall Warning 2, NWS State College, PA

November 28, 2023Clearfield County, Elk County, Pennsylvania

NWS State College, PA issued this snow squall warning at Nov 28, 2023, 11:27 AM EST for Clearfield County, Elk County, Pennsylvania. It was in force for 93 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
Nov 28, 2023, 11:27 AM EST (16:27 UTC)
Expired
Nov 28, 2023, 1:00 PM EST
In force
93 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Damage threat
Significant

Counties Clearfield County, PA, Elk County, PA

The radar

The State College radar (KCCX), 57 km from the middle of the area, began a volume at 16:29 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, 4.5 hours before the alert went out and 270 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, Washington/Dulle, VA at 12:00Z on 2023-11-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 2023-11-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939587897117136156175Sfc1 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
1422 m above ground
0-6 km bulk shear
107 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
47 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
Nov 27, 10:02 PM ESTSpecial Weather StatementCTPCentre28 min
Nov 27, 10:43 PM ESTSpecial Weather StatementCTPBlair, Cambria32 min
Nov 27, 11:24 PM ESTSpecial Weather StatementCTPBlair, Cambria36 min
Nov 28, 4:01 AM ESTSpecial Weather StatementCTPMifflin29 min
Nov 28, 4:55 AM ESTSpecial Weather StatementCTPCentre50 min
Nov 28, 6:15 AM ESTSpecial Weather StatementCTPTioga75 min
Nov 28, 6:36 AM ESTSpecial Weather StatementCTPSomerset54 min
Nov 28, 7:26 AM ESTSpecial Weather StatementCTPTioga64 min
Nov 28, 8:56 AM ESTSpecial Weather StatementCTPPotter64 min
Nov 28, 9:33 AM ESTSpecial Weather StatementCTPElk57 min
Nov 28, 10:03 AM ESTSpecial Weather StatementCTPCameron57 min
Nov 28, 11:04 AM ESTSpecial Weather StatementCTPClearfield71 min
Nov 28, 12:38 PM ESTSnow Squall WarningCTPCentre22 min
Nov 28, 1:05 PM ESTSnow Squall WarningCTPCentre25 min
Nov 28, 1:39 PM ESTSpecial Weather StatementCTPCentre21 min

Nearby

Snow Squall Warnings in Pennsylvania, 2023Every snow squall warning in 2023

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.