Alert archive / Ohio / Mesoscale Discussions in 2005

Mesoscale Discussion 2520

December 3, 20057 states

The Storm Prediction Center issued this mesoscale discussion at Dec 3, 2005, 7:43 PM CST for 7 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Dec 3, 2005, 7:43 PM CST (01:43 UTC)
Expired: Dec 4, 2005, 12:45 AM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 166 counties

Boone County, IL, Bureau County, IL, Carroll County, IL, Champaign County, IL, Cook County, IL, DeKalb County, IL, DeWitt County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Grundy County, IL, Henry County, IL, Iroquois County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macon County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McHenry County, IL, McLean County, IL, Menard County, IL, Ogle County, IL, Peoria County, IL, Piatt County, IL, Putnam County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Vermilion County, IL, Warren County, IL, Whiteside County, IL, Will County, IL, Winnebago County, IL, Woodford County, IL, Adams County, IN, Allen County, IN, Benton County, IN, Blackford County, IN, Carroll County, IN, Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Grant County, IN, Howard County, IN, Huntington County, IN, Jasper County, IN, Jay County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, Warren County, IN, Wells County, IN, White County, IN, Whitley County, IN, Allegan County, MI, Barry County, MI, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Clinton County, MI, Eaton County, MI, Genesee County, MI, Hillsdale County, MI, Ingham County, MI, Ionia County, MI, Jackson County, MI, Kalamazoo County, MI, Kent County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Montcalm County, MI, Oakland County, MI, Ottawa County, MI, Saint Clair County, MI, Saint Joseph County, MI, Shiawassee County, MI, Van Buren County, MI, Washtenaw County, MI, Wayne County, MI, Allen County, OH, Ashland County, OH, Ashtabula County, OH, Auglaize County, OH, Carroll County, OH, Columbiana County, OH, Crawford County, OH, Cuyahoga County, OH, Defiance County, OH, Erie County, OH, Fulton County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Henry County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Logan County, OH, Lorain County, OH, Lucas County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Morrow County, OH, Ottawa County, OH, Paulding County, OH, Portage County, OH, Putnam County, OH, Richland County, OH, Sandusky County, OH, Seneca County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Van Wert County, OH, Wayne County, OH, Williams County, OH, Wood County, OH, Wyandot County, OH, Allegheny County, PA, Beaver County, PA, Butler County, PA, Crawford County, PA, Erie County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Jefferson County, WI, Kenosha County, WI, Milwaukee County, WI, Racine County, WI, Rock County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI, Brooke County, WV, Hancock County, WV

The radar

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 01:46 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 00:00Z, 1.7 hours before the alert went out and 285 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: 1580 m above ground
0-6 km bulk shear: 81 kt
0-1 km storm-relative helicity: 293 m²/s²
0-3 km storm-relative helicity: 540 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
Dec 3, 7:15 PM CST	Mesoscale Discussion	SPC	Massac	2 hr
Dec 3, 6:56 PM CST	Mesoscale Discussion	SPC	Bartholomew, Boone, Brown, Clark, Clay, Daviess and 38 more	6 hr
Dec 4, 12:04 AM CST	Mesoscale Discussion	SPC	Adams, Allegheny, Armstrong, Beaver, Bedford, Berks and 57 more	4 hr
Dec 4, 5:50 AM CST	Mesoscale Discussion	SPC	Bucks, Delaware, Montgomery, Northampton, Philadelphia	2 hr

Nearby

Mesoscale Discussions in Ohio, 2005 Mesoscale Discussions in Illinois, 2005 Mesoscale Discussions in Indiana, 2005 Every mesoscale discussion in 2005

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.