Alert archive / Ohio / Mesoscale Discussions in 2013

Mesoscale Discussion 2020

November 17, 201361 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Nov 17, 2013, 3:05 PM EST for 61 counties in Ohio. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
Nov 17, 2013, 3:05 PM EST (20:05 UTC)
Expired
Nov 17, 2013, 4:30 PM EST
In force
85 min
Issued by
the Storm Prediction Center
Chance of a watch
95%
All 61 counties

Adams County, OH, Ashland County, OH, Ashtabula County, OH, Athens County, OH, Carroll County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Geauga County, OH, Greene County, OH, Guernsey County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Huron County, OH, Jackson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Ottawa County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Portage County, OH, Richland County, OH, Ross County, OH, Sandusky County, OH, Scioto County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Wayne County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cincinnati radar (KILN), 135 km from the middle of the area, began a volume at 20:07 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, 8.1 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, Cncnati-Daytn, OH at 12:00Z on 2013-11-17Temperature 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, Cncnati-Daytn, OH at 12:00Z on 2013-11-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 134 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
743 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
134 m²/s²
0-3 km storm-relative helicity
145 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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
Nov 17, 11:01 AM ESTMesoscale DiscussionSPCAllen, Darke, Defiance, Fulton, Henry, Mercer and 4 more119 min
Nov 17, 11:20 AM ESTTornado Watch PDSSPCAllen, Auglaize, Butler, Clermont, Darke, Defiance and 13 more9 hr
Nov 17, 3:51 PM ESTMesoscale DiscussionSPCAllen, Auglaize, Darke, Defiance, Fulton, Henry and 8 more84 min
Nov 17, 4:25 PM ESTTornado WatchSPCAdams, Ashland, Ashtabula, Athens, Belmont, Brown and 63 more5 hr
Nov 17, 6:06 PM ESTMesoscale DiscussionSPCAdams, Allen, Ashland, Athens, Auglaize, Belmont and 65 more54 min
Nov 17, 6:16 PM ESTMesoscale DiscussionSPCGallia, Lawrence59 min

Nearby

Mesoscale Discussions in Ohio, 2013Every mesoscale discussion in 2013

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.