Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 2163

August 16, 200314 counties in Indiana; 20 counties in Michigan; 38 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2003, 12:24 PM EST for 14 counties in Indiana; 20 counties in Michigan; 38 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 16, 2003, 12:24 PM EST (17:24 UTC)
Expired: Aug 16, 2003, 2:30 PM EST
In force: 2 hr
Issued by: the Storm Prediction Center

All 72 counties

Adams County, IN, Allen County, IN, Blackford County, IN, DeKalb County, IN, Elkhart County, IN, Huntington County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, Noble County, IN, Randolph County, IN, Steuben County, IN, Wells County, IN, Whitley County, IN, Barry County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lenawee County, MI, Livingston County, MI, Monroe County, MI, Oakland County, MI, Saint Joseph County, MI, Shiawassee County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Ashland County, OH, Auglaize County, OH, Champaign County, OH, Crawford County, OH, Cuyahoga County, OH, Darke County, OH, Defiance County, OH, Delaware County, OH, Erie County, OH, Fulton County, OH, Hancock County, OH, Hardin County, OH, Henry County, OH, Holmes County, OH, Huron County, OH, Knox County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Miami County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Shelby County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH

The radar

The Detroit radar (KDTX), 117 km from the middle of the area, began a volume at 17:25 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

Detroit, MI (KDTX), launched 12:00Z, 5.4 hours before the alert went out and 121 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: 727 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1056 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

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
Aug 16, 1:00 PM EST	Severe Thunderstorm Watch	SPC	Allen, DeKalb, Elkhart, LaGrange, Noble, Saint Joseph and 1 more	6 hr
Aug 16, 3:25 PM EST	Severe Thunderstorm Watch	SPC	Adams, Allen, Blackford, Carroll, Cass, DeKalb and 29 more	6 hr
Aug 16, 6:14 PM EST	Mesoscale Discussion	SPC	Adams, Allen, Blackford, Cass, DeKalb, Delaware and 23 more	91 min
Aug 16, 5:53 PM EST	Mesoscale Discussion	SPC	Hillsdale, Lenawee, Monroe, Washtenaw	97 min

Nearby

Mesoscale Discussions in Ohio, 2003 Mesoscale Discussions in Michigan, 2003 Mesoscale Discussions in Indiana, 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.