Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 2258

August 26, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2003, 12:27 AM EDT for 4 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Aug 26, 2003, 12:27 AM EDT (04:27 UTC)
Expired: Aug 26, 2003, 1:30 AM EDT
In force: 63 min
Issued by: the Storm Prediction Center

All 37 counties

Monroe County, MI, Wayne County, MI, Ashtabula County, OH, Carroll County, OH, Columbiana County, OH, Cuyahoga County, OH, Erie County, OH, Geauga County, OH, Huron County, OH, Jefferson County, OH, Lake County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Medina County, OH, Ottawa County, OH, Portage County, OH, Sandusky County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Wayne County, OH, Allegheny County, PA, Armstrong County, PA, Beaver County, PA, Butler County, PA, Clarion County, PA, Crawford County, PA, Forest County, PA, Indiana County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV

The radar

The Cleveland radar (KCLE), 35 km from the middle of the area, began a volume at 04:26 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

Pittsburgh, PA (KPIT), launched 00:00Z, 4.5 hours before the alert went out and 171 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: 2226 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 914 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 43 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 1.6

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
Aug 25, 11:02 PM EDT	Mesoscale Discussion	SPC	Gogebic	58 min
Aug 26, 2:35 AM EDT	Mesoscale Discussion	SPC	Clare, Gladwin, Isabella, Lake, Mecosta, Midland and 3 more	85 min
Aug 26, 3:49 AM EDT	Mesoscale Discussion	SPC	Allegan, Barry, Branch, Calhoun, Cass, Clinton and 12 more	116 min
Aug 26, 5:41 AM EDT	Mesoscale Discussion	SPC	Antrim, Cheboygan, Crawford, Emmet, Montmorency, Oscoda and 1 more	94 min
Aug 26, 6:00 AM EDT	Severe Thunderstorm Watch	SPC	Alpena, Antrim, Charlevoix, Cheboygan, Crawford, Emmet and 7 more	4 hr
Aug 26, 7:47 AM EDT	Mesoscale Discussion	SPC	Alpena, Crawford, Montmorency, Oscoda, Presque Isle	58 min
Aug 26, 9:10 AM EDT	Severe Thunderstorm Watch	SPC	Monroe	5 hr
Aug 26, 2:15 PM EDT	Severe Thunderstorm Watch	SPC	Berrien, Branch, Cass, Saint Joseph	4 hr
Aug 26, 8:30 AM EDT	Mesoscale Discussion	SPC	Ashland, Ashtabula, Cuyahoga, Erie, Geauga, Hancock and 12 more	2 hr
Aug 26, 11:08 AM EDT	Mesoscale Discussion	SPC	Ashland, Athens, Auglaize, Belmont, Carroll, Champaign and 32 more	2 hr
Aug 26, 1:05 PM EDT	Severe Thunderstorm Watch	SPC	Athens, Auglaize, Belmont, Butler, Carroll, Champaign and 39 more	5 hr
Aug 26, 2:19 PM EDT	Mesoscale Discussion	SPC	Monroe, Noble	116 min
Aug 26, 3:46 PM EDT	Mesoscale Discussion	SPC	Allen, Ashland, Auglaize, Belmont, Carroll, Champaign and 37 more	119 min
Aug 26, 4:25 PM EDT	Severe Thunderstorm Watch	SPC	Allen, Ashland, Auglaize, Belmont, Carroll, Columbiana and 39 more	6 hr
Aug 26, 6:18 PM EDT	Mesoscale Discussion	SPC	Allen, Ashland, Auglaize, Belmont, Carroll, Columbiana and 35 more	57 min
Aug 26, 7:55 PM EDT	Mesoscale Discussion	SPC	Ashland, Belmont, Carroll, Columbiana, Coshocton, Delaware and 21 more	65 min
Aug 26, 2:55 PM EDT	Severe Thunderstorm Watch	SPC	Berkeley, Grant, Hampshire, Hardy, Jefferson, Pendleton	5 hr

Nearby

Mesoscale Discussions in Ohio, 2003 Mesoscale Discussions in Pennsylvania, 2003 Mesoscale Discussions in Michigan, 2003 Every mesoscale discussion in 2003

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.