Alert archive / Ohio / Mesoscale Discussions in 2020

Mesoscale Discussion 253

March 28, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Mar 28, 2020, 4:03 PM EDT for 4 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
Mar 28, 2020, 4:03 PM EDT (20:03 UTC)
Expired
Mar 28, 2020, 5:30 PM EDT
In force
87 min
Issued by
the Storm Prediction Center
All 71 counties

Blackford County, IN, Boone County, IN, Clinton County, IN, Delaware County, IN, Fayette County, IN, Grant County, IN, Hamilton County, IN, Hancock County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Jay County, IN, Madison County, IN, Marion County, IN, Montgomery County, IN, Putnam County, IN, Randolph County, IN, Rush County, IN, Tipton County, IN, Wayne County, IN, Allen County, OH, Ashland County, OH, Auglaize County, OH, Belmont County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Guernsey County, OH, Hardin County, OH, Harrison County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Preble County, OH, Richland County, OH, Shelby County, OH, Stark County, OH, Tuscarawas County, OH, Union County, OH, Wayne County, OH, Wyandot County, OH, Allegheny County, PA, Beaver County, PA, Butler County, PA, Greene County, PA, Lawrence County, PA, Washington County, PA, Westmoreland County, PA, Brooke County, WV, Hancock County, WV, Marshall County, WV, Ohio County, WV

The radar

The Cincinnati radar (KILN), 104 km from the middle of the area, began a volume at 20:04 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.1 hours before the alert went out and 103 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 2020-03-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 195 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 2020-03-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
195 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
1079 m above ground
0-6 km bulk shear
63 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
292 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

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 27, 9:02 PM EDTMesoscale DiscussionSPCGibson, Knox, Pike, Posey, Vanderburgh, Warrick88 min
Mar 28, 11:18 AM EDTMesoscale DiscussionSPCBenton, Boone, Carroll, Cass, Clinton, Fountain and 12 more2 hr
Mar 28, 1:42 PM EDTSevere Thunderstorm WatchSPCAdams, Bartholomew, Blackford, Boone, Brown, Carroll and 51 more6 hr
Mar 28, 7:34 PM EDTTornado WatchSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick7 hr
Mar 28, 7:44 PM EDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clay, Dearborn, Decatur and 24 more61 min
Mar 28, 10:32 AM EDTMesoscale DiscussionSPCAshland, Carroll, Columbiana, Crawford, Cuyahoga, Erie and 19 more88 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 Indiana, 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.