Alert archive / Pennsylvania / Freeze Warnings in 2023
Freeze Warning 4, NWS State College, PA
NWS State College, PA issued this freeze warning at Apr 24, 2023, 2:09 PM EDT for 21 counties in Pennsylvania. It took effect at Apr 24, 2023, 11:00 PM EDT. It was in force for 10 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
- Apr 24, 2023, 2:09 PM EDT (18:09 UTC)
- In effect from
- Apr 24, 2023, 11:00 PM EDT
- Expired
- Apr 25, 2023, 9:00 AM EDT
- In force
- 10 hr
- Issued by
- NWS State College, PA
All 21 counties
Adams County, PA, Bedford County, PA, Blair County, PA, Cambria County, PA, Cameron County, PA, Centre County, PA, Clearfield County, PA, Clinton County, PA, Cumberland County, PA, Elk County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lycoming County, PA, Mifflin County, PA, Perry County, PA, Snyder County, PA, Somerset County, PA, Union County, PA, Warren County, PA
The radar
The State College radar (KCCX), 31 km from the middle of the area, began a volume at 18:11 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 12:00Z, 6.2 hours before the alert went out and 186 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.
- Mixed-layer CAPE
- 13 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 827 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 3:14 AM EDT | Freeze Watch | CTP | Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 8 more | 11 hr |
| Apr 24, 2:09 PM EDT | Frost Advisory | CTP | Columbia, Dauphin, Lancaster, Lebanon, Montour, Northumberland and 2 more | 19 hr |
Nearby
Freeze Warnings in Pennsylvania, 2023Every freeze 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.