Alert archive / Ohio / Mesoscale Discussions in 2004

Mesoscale Discussion 893

May 25, 200448 counties in Ohio; 7 counties in Pennsylvania; 18 counties in West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 25, 2004, 12:54 PM EDT for 48 counties in Ohio; 7 counties in Pennsylvania; 18 counties in West Virginia. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued
May 25, 2004, 12:54 PM EDT (16:54 UTC)
Expired
May 25, 2004, 2:30 PM EDT
In force
96 min
Issued by
the Storm Prediction Center
All 73 counties

Ashland County, OH, Ashtabula County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Lawrence County, OH, Licking County, OH, Lorain County, OH, Mahoning County, OH, Medina 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, Portage County, OH, Richland County, OH, Ross County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Beaver County, PA, Crawford County, PA, Greene County, PA, Lawrence County, PA, Mercer County, PA, Washington County, PA, Brooke County, WV, Cabell County, WV, Calhoun County, WV, Doddridge County, WV, Gilmer County, WV, Hancock County, WV, Jackson County, WV, Marshall County, WV, Mason County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV

The radar

The Cleveland radar (KCLE), 148 km from the middle of the area, began a volume at 16:57 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, 4.9 hours before the alert went out and 167 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2004-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 996 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2004-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
996 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.8
Supercell composite
4.1

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.

IssuedProductOfficeCountiesLasted
May 25, 4:00 AM EDTSevere Thunderstorm WatchSPCAdams, Brown, Butler, Champaign, Clark, Clermont and 14 more3 hr
May 25, 5:23 AM EDTMesoscale DiscussionSPCAdams, Brown, Butler, Champaign, Clark, Clermont and 14 more97 min
May 25, 1:30 PM EDTSevere Thunderstorm WatchSPCAthens, Belmont, Carroll, Columbiana, Coshocton, Cuyahoga and 22 more7 hr
May 25, 3:57 PM EDTMesoscale DiscussionSPCAthens, Belmont, Carroll, Columbiana, Coshocton, Cuyahoga and 21 more63 min
May 25, 5:02 PM EDTMesoscale DiscussionSPCAdams, Brown, Clermont, Clinton, Hamilton, Highland and 8 more58 min
May 25, 5:30 PM EDTSevere Thunderstorm WatchSPCAdams, Brown, Clermont, Scioto6 hr
May 25, 2:58 PM EDTMesoscale DiscussionSPCBedford, Blair, Cambria, Fayette, Franklin, Fulton and 4 more92 min
May 25, 3:20 PM EDTSevere Thunderstorm WatchSPCAdams, Bedford, Berks, Blair, Cambria, Cumberland and 11 more6 hr
May 25, 6:09 PM EDTMesoscale DiscussionSPCAdams, Bedford, Berks, Blair, Bucks, Cambria and 15 more2 hr

Nearby

Mesoscale Discussions in Ohio, 2004Mesoscale Discussions in West Virginia, 2004Mesoscale Discussions in Pennsylvania, 2004Every 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.