Alert archive / Ohio / Freezing Rain Advisories in 2012

Freezing Rain Advisory 4, NWS Pittsburgh, PA

December 23, 2012Greene County, Washington County, Pennsylvania; 5 counties in Ohio; 5 counties in West Virginia

NWS Pittsburgh, PA issued this freezing rain advisory at Dec 23, 2012, 1:51 PM EST for Greene County, Washington County, Pennsylvania; 5 counties in Ohio; 5 counties in West Virginia. It took effect at Dec 24, 2012, 8:00 AM EST. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Dec 23, 2012, 1:51 PM EST (18:51 UTC)
In effect from
Dec 24, 2012, 8:00 AM EST
Expired
Dec 25, 2012, 12:00 AM EST
In force
16 hr
Issued by
NWS Pittsburgh, PA

Counties Belmont County, OH, Guernsey County, OH, Monroe County, OH, Muskingum County, OH, Noble County, OH, Greene County, PA, Washington County, PA, Brooke County, WV, Marion County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 87 km from the middle of the area, began a volume at 18:50 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, 6.9 hours before the alert went out and 84 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 12:00Z on 2012-12-23Temperature 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 12:00Z on 2012-12-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 210 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
1850 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
210 m²/s²
0-3 km storm-relative helicity
367 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

Nearby

Freezing Rain Advisories in Ohio, 2012Freezing Rain Advisories in West Virginia, 2012Freezing Rain Advisories in Pennsylvania, 2012Every freezing rain advisory 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.