Alert archive / Ohio / Mesoscale Discussions in 2020

Mesoscale Discussion 903

June 10, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2020, 6:35 PM EDT for 4 states. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Jun 10, 2020, 6:35 PM EDT (22:35 UTC)
Expired
Jun 10, 2020, 8:00 PM EDT
In force
85 min
Issued by
the Storm Prediction Center
Concerning
Severe thunderstorm watch 277
All 61 counties

Boyd County, KY, Greenup County, KY, Ashland County, OH, Ashtabula County, OH, Athens County, OH, Belmont County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Cuyahoga County, OH, Fairfield County, OH, Gallia County, OH, Geauga County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Holmes 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, Muskingum County, OH, Noble County, OH, Perry County, OH, Portage County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Wayne County, OH, Beaver County, PA, Crawford County, PA, Erie County, PA, Lawrence County, PA, Mercer County, PA, Washington County, PA, Brooke County, WV, Cabell 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), 110 km from the middle of the area, began a volume at 22:34 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, 10.6 hours before the alert went out and 133 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 2020-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 176 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, Pittsburgh, PA at 12:00Z on 2020-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.193958Sfc1 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
176 J/kg
Mixed-layer CIN
-124 J/kg
Mixed-layer LCL
1081 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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
Jun 10, 11:54 AM EDTSevere Thunderstorm WatchSPCAnderson, Bourbon, Boyle, Casey, Clark, Fayette and 20 more6 hr
Jun 10, 1:58 PM EDTMesoscale DiscussionSPCBoone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more92 min
Jun 10, 2:48 PM EDTSevere Thunderstorm WatchSPCBoone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more6 hr
Jun 10, 5:30 PM EDTSevere Thunderstorm WatchSPCBath, Bell, Breathitt, Clay, Elliott, Estill and 25 more5 hr
Jun 10, 6:23 PM EDTMesoscale DiscussionSPCBell, Harlan, Letcher, Whitley97 min
Jun 10, 6:51 PM EDTSevere Thunderstorm WatchSPCBoyd, Carter, Greenup, Lawrence6 hr
Jun 10, 7:45 PM EDTMesoscale DiscussionSPCBoyd, Breathitt, Carter, Elliott, Floyd, Greenup and 9 more90 min
Jun 10, 11:22 AM EDTMesoscale DiscussionSPCDefiance, Fulton, Henry, Mercer, Paulding, Putnam and 2 more83 min
Jun 10, 5:02 PM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Butler, Champaign, Clark and 34 more88 min
Jun 10, 1:39 PM EDTMesoscale DiscussionSPCBedford, Blair, Bradford, Centre, Clinton, Columbia and 15 more2 hr

Nearby

Mesoscale Discussions in Ohio, 2020Mesoscale Discussions in West Virginia, 2020Mesoscale Discussions in Pennsylvania, 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.