Alert archive / West Virginia / Mesoscale Discussions in 2003

Mesoscale Discussion 1082

May 23, 200317 counties in Ohio; 17 counties in Pennsylvania; 28 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 23, 2003, 1:47 PM EDT for 17 counties in Ohio; 17 counties in Pennsylvania; 28 counties in West Virginia. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued: May 23, 2003, 1:47 PM EDT (17:47 UTC)
Expired: May 23, 2003, 3:15 PM EDT
In force: 88 min
Issued by: the Storm Prediction Center

All 62 counties

Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Guernsey County, OH, Harrison County, OH, Jefferson County, OH, Mahoning County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Stark County, OH, Trumbull County, OH, Tuscarawas County, OH, Washington County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Fayette County, PA, Forest County, PA, Greene County, PA, Indiana County, PA, Jefferson County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Westmoreland County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Harrison County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Preston County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Taylor County, WV, Tyler County, WV, Upshur County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 48 km from the middle of the area, began a volume at 17:46 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 419May 23, 3:00 PM EDT

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 5.8 hours before the alert went out and 38 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: 4 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 98 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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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 23, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson and 5 more	6 hr
May 23, 4:41 PM EDT	Mesoscale Discussion	SPC	Belmont, Carroll, Columbiana, Guernsey, Harrison, Jefferson and 5 more	94 min
May 23, 6:35 PM EDT	Mesoscale Discussion	SPC	Belmont, Carroll, Columbiana, Harrison, Jefferson, Mahoning and 4 more	115 min

Nearby

Mesoscale Discussions in West Virginia, 2003 Mesoscale Discussions in Ohio, 2003 Mesoscale Discussions in Pennsylvania, 2003 Every mesoscale discussion in 2003

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.