Alert archive / Ohio / Mesoscale Discussions in 2014

Mesoscale Discussion 1249

July 1, 201422 counties in Kentucky; 29 counties in Ohio; Mason County, West Virginia

The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2014, 9:15 PM EDT for 22 counties in Kentucky; 29 counties in Ohio; Mason County, West Virginia. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jul 1, 2014, 9:15 PM EDT (01:15 UTC)
Expired: Jul 1, 2014, 11:45 PM EDT
In force: 3 hr
Issued by: the Storm Prediction Center
Chance of a watch: 5%

All 52 counties

Bath County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Carter County, KY, Clark County, KY, Elliott County, KY, Fayette County, KY, Fleming County, KY, Greenup County, KY, Jessamine County, KY, Lawrence County, KY, Lewis County, KY, Madison County, KY, Mason County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Powell County, KY, Robertson County, KY, Rowan County, KY, Adams County, OH, Athens County, OH, Carroll County, OH, Coshocton County, OH, Fairfield County, OH, Franklin County, OH, Gallia County, OH, Guernsey County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Holmes County, OH, Jackson County, OH, Knox County, OH, Lawrence County, OH, Licking County, OH, Meigs County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Stark County, OH, Tuscarawas County, OH, Vinton County, OH, Washington County, OH, Mason County, WV

The radar

The Cincinnati radar (KILN), 97 km from the middle of the area, began a volume at 01:19 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, 1.3 hours before the alert went out and 96 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: 1854 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1365 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 3.1

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 1, 8:29 PM EDT	Mesoscale Discussion	SPC	Boone, Breckinridge, Bullitt, Butler, Caldwell, Calloway and 31 more	61 min
Jul 1, 9:32 PM EDT	Mesoscale Discussion	SPC	Adair, Allen, Barren, Clinton, Cumberland, Metcalfe and 4 more	2 hr
Jul 2, 12:05 PM EDT	Mesoscale Discussion	SPC	Berkeley, Hampshire, Hardy, Jefferson, Morgan, Pendleton	55 min
Jul 2, 12:42 PM EDT	Severe Thunderstorm Watch	SPC	Berkeley, Grant, Hampshire, Hardy, Jefferson, Mineral and 2 more	9 hr
Jul 2, 6:25 PM EDT	Mesoscale Discussion	SPC	Berkeley, Hampshire, Hardy, Jefferson, Pendleton	95 min

Nearby

Mesoscale Discussions in Ohio, 2014 Mesoscale Discussions in Kentucky, 2014 Mesoscale Discussions in West Virginia, 2014 Every mesoscale discussion in 2014

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.