Alert archive / Ohio / Mesoscale Discussions in 2008

Mesoscale Discussion 38

January 8, 200814 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Jan 8, 2008, 11:30 PM EST for 14 counties in Ohio. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued: Jan 8, 2008, 11:30 PM EST (04:30 UTC)
Expired: Jan 9, 2008, 12:30 AM EST
In force: 60 min
Issued by: the Storm Prediction Center

Counties Ashland County, OH, Crawford County, OH, Erie County, OH, Holmes County, OH, Huron County, OH, Medina County, OH, Portage County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Wayne County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 40 km from the middle of the area, began a volume at 04:35 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.

Severe Thunderstorm Watch 13Jan 9, 12:55 AM EST

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 4.5 hours before the alert went out and 190 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1782 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 302 m²/s²
0-3 km storm-relative helicity: 340 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.

Issued	Product	Office	Counties	Lasted
Jan 8, 9:01 PM EST	Mesoscale Discussion	SPC	Brown, Butler, Champaign, Clark, Clermont, Clinton and 12 more	89 min
Jan 8, 10:07 PM EST	Tornado Watch	SPC	Adams, Auglaize, Brown, Butler, Champaign, Clark and 24 more	4 hr
Jan 9, 12:26 AM EST	Mesoscale Discussion	SPC	Athens, Carroll, Coshocton, Fairfield, Gallia, Guernsey and 19 more	94 min
Jan 9, 12:53 AM EST	Severe Thunderstorm Watch	SPC	Ashland, Ashtabula, Athens, Belmont, Carroll, Columbiana and 31 more	3 hr

Nearby

Mesoscale Discussions in Ohio, 2008 Every mesoscale discussion in 2008

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.