Alert archive / Ohio / Mesoscale Discussions in 2017

Mesoscale Discussion 1759

November 5, 201715 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Nov 5, 2017, 3:57 PM EST for 15 counties in Ohio. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Nov 5, 2017, 3:57 PM EST (20:57 UTC)
Expired: Nov 5, 2017, 5:00 PM EST
In force: 63 min
Issued by: the Storm Prediction Center

Counties Allen County, OH, Ashland County, OH, Auglaize County, OH, Crawford County, OH, Hancock County, OH, Hardin County, OH, Huron County, OH, Logan County, OH, Marion County, OH, Medina County, OH, Morrow County, OH, Richland County, OH, Seneca County, OH, Shelby County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 114 km from the middle of the area, began a volume at 20:57 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, 9.0 hours before the alert went out and 179 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: 214 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 522 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 209 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.

Issued	Product	Office	Counties	Lasted
Nov 5, 11:29 AM EST	Mesoscale Discussion	SPC	Ashtabula, Cuyahoga, Defiance, Erie, Fulton, Geauga and 14 more	91 min
Nov 5, 12:08 PM EST	Tornado Watch	SPC	Allen, Ashland, Auglaize, Butler, Champaign, Clark and 35 more	7 hr
Nov 5, 2:29 PM EST	Mesoscale Discussion	SPC	Auglaize, Mercer	31 min
Nov 5, 4:51 PM EST	Mesoscale Discussion	SPC	Carroll, Columbiana, Geauga, Mahoning, Portage, Stark and 2 more	114 min
Nov 5, 5:28 PM EST	Severe Thunderstorm Watch	SPC	Ashtabula, Belmont, Carroll, Columbiana, Coshocton, Geauga and 13 more	5 hr
Nov 5, 5:58 PM EST	Mesoscale Discussion	SPC	Butler, Champaign, Clark, Clermont, Clinton, Darke and 18 more	62 min
Nov 5, 6:31 PM EST	Severe Thunderstorm Watch	SPC	Brown, Butler, Clark, Clermont, Clinton, Delaware and 13 more	6 hr

Nearby

Mesoscale Discussions in Ohio, 2017 Every mesoscale discussion in 2017

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.