Alert archive / Ohio / Mesoscale Discussions in 2004

Mesoscale Discussion 725

May 17, 200418 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 17, 2004, 5:23 PM EDT for 18 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: May 17, 2004, 5:23 PM EDT (21:23 UTC)
Expired: May 17, 2004, 7:30 PM EDT
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Ashland County, OH, Crawford County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Hancock County, OH, Huron County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Medina County, OH, Ottawa County, OH, Portage County, OH, Sandusky County, OH, Seneca County, OH, Summit County, OH, Wood County, OH, Wyandot County, OH

The radar

The Cleveland radar (KCLE), 70 km from the middle of the area, began a volume at 21:27 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

Detroit, MI (KDTX), launched 12:00Z, 9.4 hours before the alert went out and 159 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: 694 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 188 m²/s²
0-3 km storm-relative helicity: 252 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
May 17, 11:22 AM EDT	Mesoscale Discussion	SPC	Williams	2 hr
May 17, 1:05 PM EDT	Severe Thunderstorm Watch	SPC	Fulton, Lucas, Williams, Wood	7 hr
May 17, 2:09 PM EDT	Mesoscale Discussion	SPC	Adams, Allen, Auglaize, Brown, Butler, Champaign and 21 more	2 hr
May 17, 2:45 PM EDT	Severe Thunderstorm Watch	SPC	Ashland, Crawford, Cuyahoga, Erie, Geauga, Hancock and 12 more	5 hr
May 17, 4:05 PM EDT	Mesoscale Discussion	SPC	Fulton, Williams	85 min
May 17, 5:46 PM EDT	Mesoscale Discussion	SPC	Fulton, Williams	89 min
May 17, 6:50 PM EDT	Mesoscale Discussion	SPC	Ashtabula, Columbiana, Geauga, Mahoning, Medina, Portage and 4 more	85 min

Nearby

Mesoscale Discussions in Ohio, 2004 Every mesoscale discussion in 2004

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.