Alert archive / Pennsylvania / Freeze Warnings in 2012
Freeze Warning 17, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this freeze warning at Oct 10, 2012, 10:54 AM EDT for 5 counties in Pennsylvania; Marion County, Marshall County, Wetzel County, West Virginia. It took effect at Oct 11, 2012, 3:00 AM EDT. It was in force for 6 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
- Oct 10, 2012, 10:54 AM EDT (14:54 UTC)
- In effect from
- Oct 11, 2012, 3:00 AM EDT
- Expired
- Oct 11, 2012, 9:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Pittsburgh, PA
Counties Armstrong County, PA, Fayette County, PA, Greene County, PA, Jefferson County, PA, Westmoreland County, PA, Marion County, WV, Marshall County, WV, Wetzel County, WV
The radar
The Pittsburgh radar (KPBZ), 52 km from the middle of the area, began a volume at 14:57 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, 2.9 hours before the alert went out and 35 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
- 2 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 838 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
Nearby
Freeze Warnings in Pennsylvania, 2012Freeze Warnings in West Virginia, 2012Every freeze warning in 2012
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.