Alert archive / Pennsylvania / Wind Advisories in 2009

Wind Advisory 1, NWS Pittsburgh, PA

February 12, 200912 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia

NWS Pittsburgh, PA issued this wind advisory at Feb 12, 2009, 4:15 AM EST for 12 counties in Pennsylvania; 11 counties in Ohio; 6 counties in West Virginia. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Feb 12, 2009, 4:15 AM EST (09:15 UTC)
Expired: Feb 12, 2009, 7:00 PM EST
In force: 15 hr
Issued by: NWS Pittsburgh, PA

All 29 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, Forest County, PA, Greene County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Washington 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), 29 km from the middle of the area, began a volume at 09:18 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, 9.3 hours before the alert went out and 37 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: 1938 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 403 m²/s²
0-3 km storm-relative helicity: 561 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 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 advisory went out at Feb 12, 4:09 AM EST, 6 minutes earlier.

Area forecast discussion, Feb 12, 4:09 AM EST, 6 minutes before

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Hazardous weather outlook, Feb 11, 9:09 PM EST, 7 hours 6 minutes before

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In the hours before

Local storm report, Feb 12, 1:44 AM EST, 2 hours 31 minutes before

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Local storm report, Feb 12, 1:49 AM EST, 2 hours 26 minutes before

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Local storm report, Feb 12, 1:53 AM EST, 2 hours 22 minutes before

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Local storm report, Feb 12, 1:58 AM EST, 2 hours 17 minutes before

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Local storm report, Feb 12, 2:13 AM EST, 2 hours 2 minutes before

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Local storm report, Feb 12, 3:45 AM EST, 30 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 11, 7:26 PM EST	Severe Thunderstorm Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Fayette, Greene and 6 more	64 min
Feb 11, 8:11 PM EST	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Fayette, Forest, Indiana and 4 more	46 min
Feb 12, 8:54 AM EST	River Flood Advisory	PBZ	Armstrong, Clarion	4 hr
Feb 12, 8:54 AM EST	River Flood Advisory	PBZ	Armstrong	4 hr
Feb 12, 8:54 AM EST	River Flood Advisory	PBZ	Armstrong	4 hr
Feb 12, 1:49 PM EST	Areal Flood Warning	PBZ	Armstrong, Clarion, Venango	20 hr
Feb 12, 4:34 PM EST	Areal Flood Warning	PBZ	Forest	8 hr
Feb 12, 2:25 AM EST	River Flood Warning	PBZ	Coshocton	3 days
Feb 11, 7:40 PM EST	Severe Thunderstorm Warning	PBZ	Tucker	50 min

Nearby

Wind Advisories in Pennsylvania, 2009 Wind Advisories in Ohio, 2009 Wind Advisories in West Virginia, 2009 Every wind advisory in 2009

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.