Alert archive / Pennsylvania / Winter Storm Warnings in 2013

Winter Storm Warning 9, NWS Pittsburgh, PA

November 25, 201312 counties in Pennsylvania; 8 counties in Ohio; Brooke County, Hancock County, West Virginia

NWS Pittsburgh, PA issued this winter storm warning at Nov 25, 2013, 3:29 PM EST for 12 counties in Pennsylvania; 8 counties in Ohio; Brooke County, Hancock County, West Virginia. It took effect at Nov 26, 2013, 7:00 AM EST. It was in force for 44 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: Nov 25, 2013, 3:29 PM EST (20:29 UTC)
In effect from: Nov 26, 2013, 7:00 AM EST
Expired: Nov 28, 2013, 3:08 AM EST
In force: 44 hr
Issued by: NWS Pittsburgh, PA

All 22 counties

Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Muskingum County, OH, Tuscarawas County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Fayette County, PA, Forest County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 19 km from the middle of the area, began a volume at 20:31 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 (KAGC), launched 12:00Z, 8.5 hours before the alert went out and 36 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1365 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 153 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Pittsburgh, PA wrote its last area forecast discussion before this winter storm warning went out at Nov 25, 10:40 AM EST, 4 hours 49 minutes earlier.

Area forecast discussion, Nov 25, 10:40 AM EST, 4 hours 49 minutes before

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Hazardous weather outlook, Nov 25, 10:30 AM EST, 4 hours 59 minutes before

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In the hours before

Local storm report, Nov 25, 11:40 AM EST, 3 hours 49 minutes before

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Local storm report, Nov 25, 11:47 AM EST, 3 hours 42 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

Everything else NWS Pittsburgh, PA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 25, 3:29 PM EST	Winter Weather Advisory	PBZ	Fayette, Greene, Washington, Westmoreland	36 hr

Nearby

Winter Storm Warnings in Pennsylvania, 2013 Winter Storm Warnings in Ohio, 2013 Winter Storm Warnings in West Virginia, 2013 Every winter storm warning in 2013

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.