Alert archive / Ohio / Mesoscale Discussions in 2020

Mesoscale Discussion 247

March 28, 202025 counties in Ohio; 10 counties in Pennsylvania; Hancock County, West Virginia

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2020, 10:32 AM EDT for 25 counties in Ohio; 10 counties in Pennsylvania; Hancock County, West Virginia. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Mar 28, 2020, 10:32 AM EDT (14:32 UTC)
Expired
Mar 28, 2020, 12:00 PM EDT
In force
88 min
Issued by
the Storm Prediction Center
Chance of a watch
20%
All 36 counties

Ashland County, OH, Carroll County, OH, Columbiana County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Indiana County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Westmoreland County, PA, Hancock County, WV

The radar

The Cleveland radar (KCLE), 61 km from the middle of the area, began a volume at 14:33 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

Pittsburgh, PA (KPIT), launched 12:00Z, 2.5 hours before the alert went out and 136 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, Pittsburgh, PA at 12:00Z on 2020-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Pittsburgh, PA at 12:00Z on 2020-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 504 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
885 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
504 m²/s²
0-3 km storm-relative helicity
719 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

IssuedProductOfficeCountiesLasted
Mar 28, 1:42 PM EDTSevere Thunderstorm WatchSPCAllen, Ashland, Athens, Auglaize, Belmont, Brown and 57 more6 hr
Mar 28, 4:03 PM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Belmont, Carroll, Champaign and 34 more87 min
Mar 28, 7:44 PM EDTMesoscale DiscussionSPCButler, Champaign, Clark, Clinton, Darke, Delaware and 20 more61 min
Mar 28, 5:51 PM EDTMesoscale DiscussionSPCBedford, Blair, Cambria, Franklin, Fulton, Huntingdon and 1 more84 min

Nearby

Mesoscale Discussions in Ohio, 2020Mesoscale Discussions in Pennsylvania, 2020Mesoscale Discussions in West Virginia, 2020Every mesoscale discussion in 2020

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.