Alert archive / Ohio / Mesoscale Discussions in 2009

Mesoscale Discussion 103

February 11, 20096 states

The Storm Prediction Center issued this mesoscale discussion at Feb 11, 2009, 4:34 PM EST for 6 states. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued: Feb 11, 2009, 4:34 PM EST (21:34 UTC)
Expired: Feb 11, 2009, 6:00 PM EST
In force: 86 min
Issued by: the Storm Prediction Center

All 117 counties

Bell County, KY, Boyd County, KY, Breathitt County, KY, Carter County, KY, Clay County, KY, Elliott County, KY, Floyd County, KY, Greenup County, KY, Harlan County, KY, Johnson County, KY, Knott County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lewis County, KY, Magoffin County, KY, Martin County, KY, Menifee County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Rowan County, KY, Wolfe County, KY, Avery County, NC, Buncombe County, NC, Haywood County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Swain County, NC, Yancey County, NC, Adams County, OH, Athens County, OH, Belmont County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Coshocton County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Knox County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Tuscarawas County, OH, Union County, OH, Vinton County, OH, Washington County, OH, Blount County, TN, Carter County, TN, Claiborne County, TN, Cocke County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Monroe County, TN, Sevier County, TN, Sullivan County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, Buchanan County, VA, City of Bristol, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Tazewell County, VA, Washington County, VA, Wise County, VA, Boone County, WV, Cabell County, WV, Calhoun County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mingo County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV, Wyoming County, WV

The radar

The Jackson,KY radar (KJKL), 92 km from the middle of the area, began a volume at 21:34 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 20Feb 11, 5:55 PM EST

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.6 hours before the alert went out and 120 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: 622 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 468 m²/s²
0-3 km storm-relative helicity: 468 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
Feb 11, 3:30 AM EST	Mesoscale Discussion	SPC	Fulton, Hickman	90 min
Feb 11, 6:26 AM EST	Mesoscale Discussion	SPC	Ballard, Carlisle, Fulton, Hickman, McCracken	64 min
Feb 11, 11:02 AM EST	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 81 more	88 min
Feb 11, 11:38 AM EST	Tornado Watch	SPC	Adair, Allen, Anderson, Barren, Boone, Bourbon and 58 more	6 hr
Feb 11, 1:35 PM EST	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bell and 84 more	85 min
Feb 11, 1:59 PM EST	Tornado Watch	SPC	Bath, Bell, Boyd, Breathitt, Carter, Clay and 32 more	7 hr
Feb 11, 2:29 PM EST	Mesoscale Discussion	SPC	Cherokee, Clay, Jackson, Macon, Transylvania	2 hr
Feb 11, 4:08 PM EST	Severe Thunderstorm Watch	SPC	Avery, Buncombe, Burke, Caldwell, Graham, Haywood and 11 more	5 hr
Feb 11, 5:53 PM EST	Severe Thunderstorm Watch	SPC	Alleghany, Ashe, Stokes, Surry, Watauga, Wilkes and 1 more	4 hr
Feb 11, 5:32 PM EST	Mesoscale Discussion	SPC	Athens, Belmont, Carroll, Coshocton, Fairfield, Guernsey and 13 more	88 min
Feb 11, 12:45 AM EST	Tornado Watch	SPC	Dyer, Lake, Lauderdale, Obion, Shelby, Tipton	6 hr
Feb 11, 12:10 PM EST	Tornado Watch	SPC	Bledsoe, Bradley, Franklin, Hamilton, Lincoln, McMinn and 6 more	6 hr

Nearby

Mesoscale Discussions in Ohio, 2009 Mesoscale Discussions in Kentucky, 2009 Mesoscale Discussions in Tennessee, 2009 Every mesoscale discussion in 2009

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.