Alert archive / Pennsylvania / Special Weather Statements in 2015

Special Weather Statement, NWS Pittsburgh, PA

January 7, 2015Clarion County, Venango County, Pennsylvania

NWS Pittsburgh, PA issued this special weather statement at Jan 7, 2015, 4:42 PM EST for Clarion County, Venango County, Pennsylvania. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 7, 2015, 4:42 PM EST (21:42 UTC)
Expired: Jan 7, 2015, 5:30 PM EST
In force: 48 min
Issued by: NWS Pittsburgh, PA

Counties Clarion County, PA, Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 99 km from the middle of the area, began a volume at 21:40 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

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 9.7 hours before the alert went out and 203 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: 1103 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jan 7, 3:51 PM EST, 51 minutes earlier.

Area forecast discussion, Jan 7, 3:51 PM EST, 51 minutes before

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Hazardous weather outlook, Jan 7, 3:57 PM EST, 45 minutes before

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In the hours before

Local storm report, Jan 7, 3:23 PM EST, 1 hour 19 minutes before

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Special weather statement, Jan 7, 3:35 PM EST, 1 hour 7 minutes before

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Local storm report, Jan 7, 4:09 PM EST, 33 minutes before

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Local storm report, Jan 7, 4:41 PM EST, 1 minute before

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Local storm report, Jan 7, 4:42 PM EST, 0 minutes before

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Special weather statement, Jan 7, 4:42 PM EST, 0 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
Jan 7, 4:10 AM EST	Lake Effect Snow Warning	PBZ	Mercer, Venango	17 hr
Jan 7, 10:47 AM EST	Special Weather Statement	PBZ	Clarion, Forest, Jefferson, Venango	43 min
Jan 7, 11:44 AM EST	Special Weather Statement	PBZ	Clarion, Jefferson, Venango	91 min
Jan 7, 1:30 PM EST	Special Weather Statement	PBZ	Allegheny, Washington, Westmoreland	90 min
Jan 7, 2:27 PM EST	Special Weather Statement	PBZ	Fayette, Greene, Washington	63 min
Jan 7, 3:35 PM EST	Special Weather Statement	PBZ	Clarion, Jefferson, Venango	115 min
Jan 7, 5:40 PM EST	Special Weather Statement	PBZ	Clarion, Venango	50 min
Jan 7, 6:06 PM EST	Special Weather Statement	PBZ	Armstrong, Clarion, Jefferson, Venango	114 min
Jan 7, 6:39 PM EST	Special Weather Statement	PBZ	Allegheny	36 min
Jan 7, 6:50 PM EST	Special Weather Statement	PBZ	Allegheny	25 min

Nearby

Special Weather Statements in Pennsylvania, 2015 Every special weather statement in 2015

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.