Alert archive / Ohio / Mesoscale Discussions in 2004

Mesoscale Discussion 952

May 27, 200429 counties in Ohio; Greene County, Washington County, Pennsylvania; 24 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 27, 2004, 7:13 PM EDT for 29 counties in Ohio; Greene County, Washington County, Pennsylvania; 24 counties in West Virginia. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: May 27, 2004, 7:13 PM EDT (23:13 UTC)
Expired: May 27, 2004, 8:45 PM EDT
In force: 92 min
Issued by: the Storm Prediction Center

All 55 counties

Athens County, OH, Belmont County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Marion County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Greene County, PA, Washington County, PA, Barbour County, WV, Braxton County, WV, Brooke County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Jackson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mason County, WV, Monongalia County, WV, Ohio County, WV, Pleasants County, WV, Randolph 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 Charleston,WV radar (KRLX), 131 km from the middle of the area, began a volume at 23:13 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.2 hours before the alert went out and 164 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: 97 J/kg
Mixed-layer CIN: -177 J/kg
Mixed-layer LCL: 587 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 295 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 27, 2:07 PM EDT	Mesoscale Discussion	SPC	Butler, Clermont, Hamilton, Montgomery, Preble, Warren	113 min
May 27, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	Allen, Auglaize, Butler, Champaign, Clark, Clinton and 15 more	7 hr
May 27, 5:14 PM EDT	Mesoscale Discussion	SPC	Athens, Belmont, Coshocton, Delaware, Fairfield, Franklin and 22 more	91 min
May 27, 5:45 PM EDT	Severe Thunderstorm Watch	SPC	Athens, Belmont, Carroll, Coshocton, Crawford, Delaware and 30 more	5 hr
May 27, 7:00 PM EDT	Mesoscale Discussion	SPC	Allen, Auglaize, Butler, Champaign, Clark, Clinton and 11 more	90 min
May 27, 7:35 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Clermont, Gallia, Jackson, Lawrence and 2 more	25 min
May 27, 7:55 PM EDT	Tornado Watch	SPC	Adams, Athens, Brown, Clermont, Gallia, Jackson and 5 more	5 hr
May 27, 3:07 PM EDT	Mesoscale Discussion	SPC	Adams, Franklin, York	113 min

Nearby

Mesoscale Discussions in Ohio, 2004 Mesoscale Discussions in West Virginia, 2004 Mesoscale Discussions in Pennsylvania, 2004 Every mesoscale discussion in 2004

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.