Alert archive / Ohio / Excessive Heat Warnings in 2011

Excessive Heat Warning 2, NWS Pittsburgh, PA

July 22, 2011Allegheny County, Beaver County, Washington County, Pennsylvania; 11 counties in Ohio; 5 counties in West Virginia

NWS Pittsburgh, PA issued this excessive heat warning at Jul 22, 2011, 11:36 AM EDT for Allegheny County, Beaver County, Washington County, Pennsylvania; 11 counties in Ohio; 5 counties in West Virginia. It was in force for 6 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: Jul 22, 2011, 11:36 AM EDT (15:36 UTC)
Expired: Jul 22, 2011, 5:45 PM EDT
In force: 6 hr
Issued by: NWS Pittsburgh, PA

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, Beaver County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV, Wetzel County, WV

The radar

The Pittsburgh radar (KPBZ), 70 km from the middle of the area, began a volume at 15:41 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, 3.6 hours before the alert went out and 74 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: 3887 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 868 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -61 m²/s²
0-3 km storm-relative helicity: -29 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 excessive heat 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 excessive heat warning went out at Jul 22, 10:17 AM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jul 22, 10:17 AM EDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jul 22, 3:37 AM EDT, 7 hours 59 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
Jul 22, 2:38 PM EDT	Flash Flood Warning	PBZ	Washington	3 hr
Jul 22, 3:49 PM EDT	Special Weather Statement	PBZ	Washington	26 min
Jul 22, 4:58 PM EDT	Special Weather Statement	PBZ	Mercer	47 min
Jul 22, 5:06 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	39 min
Jul 22, 5:08 PM EDT	Severe Thunderstorm Warning	PBZ	Lawrence, Mercer	37 min
Jul 22, 5:12 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Washington	63 min
Jul 22, 5:17 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer	43 min
Jul 22, 5:19 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Westmoreland	41 min
Jul 22, 5:45 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer	47 min
Jul 22, 5:48 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Indiana, Westmoreland	42 min
Jul 22, 6:00 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny	45 min
Jul 22, 6:08 PM EDT	Areal Flood Warning	PBZ	Butler, Lawrence, Mercer	2 hr
Jul 22, 6:15 PM EDT	Areal Flood Warning	PBZ	Allegheny, Armstrong, Butler, Westmoreland	4 hr
Jul 22, 6:26 PM EDT	Special Weather Statement	PBZ	Westmoreland	64 min
Jul 22, 6:41 PM EDT	Special Weather Statement	PBZ	Greene	49 min
Jul 22, 6:48 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene, Washington	42 min
Jul 22, 7:39 PM EDT	Special Weather Statement	PBZ	Fayette, Greene	66 min
Jul 22, 7:50 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette	40 min
Jul 22, 1:45 PM EDT	Special Weather Statement	PBZ	Belmont	30 min
Jul 22, 2:24 PM EDT	Flash Flood Warning	PBZ	Belmont	3 hr
Jul 22, 4:04 PM EDT	Special Weather Statement	PBZ	Carroll, Columbiana	56 min
Jul 22, 4:09 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll	66 min
Jul 22, 4:20 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana	40 min
Jul 22, 4:45 PM EDT	Severe Thunderstorm Warning	PBZ	Columbiana	45 min
Jul 22, 6:30 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont	30 min
Jul 22, 7:04 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont	29 min
Jul 22, 7:12 PM EDT	Special Weather Statement	PBZ	Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson and 3 more	33 min
Jul 22, 7:58 PM EDT	Special Weather Statement	PBZ	Belmont	32 min
Jul 22, 7:49 PM EDT	Special Weather Statement	PBZ	Marshall	26 min

Nearby

Excessive Heat Warnings in Ohio, 2011 Excessive Heat Warnings in West Virginia, 2011 Excessive Heat Warnings in Pennsylvania, 2011 Every excessive heat warning in 2011

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.