Alert archive / Pennsylvania / Wind Chill Advisories in 2013

Wind Chill Advisory 1, NWS Pittsburgh, PA

January 21, 201314 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this wind chill advisory at Jan 21, 2013, 3:04 AM EST for 14 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It took effect at Jan 21, 2013, 10:00 PM EST. It was in force for 39 hr.

The area

The counties it named.

The facts

Issued: Jan 21, 2013, 3:04 AM EST (08:04 UTC)
In effect from: Jan 21, 2013, 10:00 PM EST
Expired: Jan 23, 2013, 1:09 PM EST
In force: 39 hr
Issued by: NWS Pittsburgh, PA

All 31 counties

Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Monroe County, OH, Muskingum County, OH, Noble 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, Greene County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marion County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 25 km from the middle of the area, began a volume at 08:05 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 00:00Z, 8.1 hours before the alert went out and 32 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: 1100 m above ground
0-6 km bulk shear: 103 kt
0-1 km storm-relative helicity: 173 m²/s²
0-3 km storm-relative helicity: 204 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 wind chill advisory 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 wind chill advisory went out at Jan 21, 12:50 AM EST, 2 hours 14 minutes earlier.

Area forecast discussion, Jan 21, 12:50 AM EST, 2 hours 14 minutes before

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Hazardous weather outlook, Jan 20, 4:26 PM EST, 10 hours 38 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.
      </p>
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 1:47 PM EST	Special Weather Statement	PBZ	Allegheny, Washington	58 min
Jan 21, 1:54 PM EST	Special Weather Statement	PBZ	Allegheny	66 min
Jan 21, 2:45 PM EST	Special Weather Statement	PBZ	Allegheny, Westmoreland	60 min
Jan 21, 3:18 PM EST	Special Weather Statement	PBZ	Armstrong, Butler, Clarion, Venango	57 min
Jan 21, 3:46 PM EST	Special Weather Statement	PBZ	Indiana	44 min
Jan 21, 4:13 PM EST	Special Weather Statement	PBZ	Westmoreland	47 min
Jan 21, 4:16 PM EST	Special Weather Statement	PBZ	Armstrong, Clarion, Jefferson	59 min
Jan 21, 1:01 PM EST	Special Weather Statement	PBZ	Carroll	59 min
Jan 21, 1:09 PM EST	Special Weather Statement	PBZ	Hancock	51 min

Nearby

Wind Chill Advisories in Pennsylvania, 2013 Wind Chill Advisories in Ohio, 2013 Wind Chill Advisories in West Virginia, 2013 Every wind chill advisory 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.