Alert archive / Pennsylvania / Frost Advisories in 2023

Frost Advisory 4, NWS State College, PA

April 26, 20236 counties in Pennsylvania

NWS State College, PA issued this frost advisory at Apr 26, 2023, 2:55 PM EDT for 6 counties in Pennsylvania. It took effect at Apr 27, 2023, 2:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued
Apr 26, 2023, 2:55 PM EDT (18:55 UTC)
In effect from
Apr 27, 2023, 2:00 AM EDT
Expired
Apr 26, 2023, 10:54 PM EDT
In force
Issued by
NWS State College, PA

Counties Bedford County, PA, Blair County, PA, Centre County, PA, Clinton County, PA, Huntingdon County, PA, Lycoming County, PA

The radar

The State College radar (KCCX), 23 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 203 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 2023-04-26Temperature 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, Washington/Dulle, VA at 12:00Z on 2023-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 128 square meters per square second.1939587897117Sfc1 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
1141 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
128 m²/s²
0-3 km storm-relative helicity
184 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
Apr 26, 2:55 PM EDTFreeze WarningCTPCambria, Cameron, Centre, Clearfield, Clinton, Elk and 3 more17 hr
Apr 26, 3:46 PM EDTSpecial Weather StatementCTPLancaster44 min

Nearby

Frost Advisories in Pennsylvania, 2023Every frost advisory 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.