Alert archive / Ohio / Mesoscale Discussions in 2025

Mesoscale Discussion 652

May 2, 202530 counties in Ohio; 10 counties in Pennsylvania; Brooke County, Hancock County, West Virginia

The Storm Prediction Center issued this mesoscale discussion at May 2, 2025, 2:58 PM EDT for 30 counties in Ohio; 10 counties in Pennsylvania; Brooke County, Hancock County, West Virginia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 2, 2025, 2:58 PM EDT (18:58 UTC)
Expired: May 2, 2025, 5:00 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 210

All 42 counties

Ashland County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Fairfield County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Mahoning County, OH, Medina County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Ross County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Forest County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Brooke County, WV, Hancock County, WV

The radar

The Pittsburgh radar (KPBZ), 68 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 83 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: 88 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 530 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 11:43 AM EDT	Mesoscale Discussion	SPC	Ashland, Carroll, Champaign, Clark, Columbiana, Coshocton and 36 more	2 hr
May 2, 12:49 PM EDT	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Belmont, Carroll, Champaign, Clark and 42 more	7 hr
May 2, 1:57 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Brown, Clermont, Hamilton, Highland	7 hr
May 2, 4:22 PM EDT	Mesoscale Discussion	SPC	Adams, Brown, Clermont	113 min
May 1, 10:06 PM EDT	Mesoscale Discussion	SPC	Bedford, Blair, Cambria, Centre, Clearfield, Clinton and 6 more	114 min
May 2, 5:42 PM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Bradford, Butler, Cameron and 24 more	2 hr

Nearby

Mesoscale Discussions in Ohio, 2025 Mesoscale Discussions in Pennsylvania, 2025 Mesoscale Discussions in West Virginia, 2025 Every mesoscale discussion in 2025

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.