Alert archive / Ohio / Mesoscale Discussions in 2006

Mesoscale Discussion 1679

July 30, 20065 states

The Storm Prediction Center issued this mesoscale discussion at Jul 30, 2006, 5:33 PM CDT for 5 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Jul 30, 2006, 5:33 PM CDT (22:33 UTC)
Expired: Jul 30, 2006, 7:30 PM CDT
In force: 117 min
Issued by: the Storm Prediction Center

All 67 counties

Iroquois County, IL, Vermilion County, IL, Adams County, IN, Benton County, IN, Blackford County, IN, Carroll County, IN, Clinton County, IN, Grant County, IN, Howard County, IN, Jay County, IN, Tippecanoe County, IN, Tipton County, IN, Warren County, IN, Wells County, IN, Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY, Niagara County, NY, Allen County, OH, Ashland County, OH, Ashtabula County, OH, Auglaize County, OH, Carroll County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Cuyahoga County, OH, Delaware County, OH, Erie County, OH, Fairfield County, OH, Franklin County, OH, Geauga County, OH, Hancock County, OH, Hardin County, OH, Harrison County, OH, Holmes County, OH, Huron County, OH, Jefferson County, OH, Knox County, OH, Lake County, OH, Licking County, OH, Logan County, OH, Lorain County, OH, Mahoning County, OH, Marion County, OH, Medina County, OH, Mercer County, OH, Morrow County, OH, Portage County, OH, Richland County, OH, Seneca County, OH, Shelby County, OH, Stark County, OH, Summit County, OH, Trumbull County, OH, Tuscarawas County, OH, Union County, OH, Van Wert County, OH, Wayne County, OH, Wyandot County, OH, Crawford County, PA, Erie County, PA, Forest County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA, Warren County, PA

The radar

The Cleveland radar (KCLE), 83 km from the middle of the area, began a volume at 22:34 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, 10.6 hours before the alert went out and 202 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: 866 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 1156 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.4

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
Jul 30, 8:27 AM CDT	Severe Thunderstorm Watch	SPC	Cook, DuPage, Kane, Lake, McHenry	7 hr
Jul 30, 2:06 PM CDT	Mesoscale Discussion	SPC	Will	84 min
Jul 30, 2:10 PM CDT	Mesoscale Discussion	SPC	Alexander, Johnson, Massac, Pulaski, Union, Williamson	3 hr
Jul 30, 10:40 AM CDT	Mesoscale Discussion	SPC	Elkhart, LaGrange, LaPorte, Saint Joseph, Steuben	95 min
Jul 30, 11:46 AM CDT	Severe Thunderstorm Watch	SPC	Adams, Allen, Blackford, Carroll, Cass, Clinton and 23 more	7 hr
Jul 29, 7:54 PM CDT	Mesoscale Discussion	SPC	Allegany, Broome, Cattaraugus, Chemung, Schuyler, Steuben and 2 more	66 min
Jul 29, 10:41 PM CDT	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Chautauqua	94 min

Nearby

Mesoscale Discussions in Ohio, 2006 Mesoscale Discussions in Indiana, 2006 Mesoscale Discussions in Pennsylvania, 2006 Every mesoscale discussion in 2006

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.