Alert archive / Ohio / Mesoscale Discussions in 2013

Mesoscale Discussion 1949

October 6, 201310 counties in Kentucky; 20 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Oct 6, 2013, 3:04 PM EDT for 10 counties in Kentucky; 20 counties in Ohio. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
Oct 6, 2013, 3:04 PM EDT (19:04 UTC)
Expired
Oct 6, 2013, 5:00 PM EDT
In force
116 min
Issued by
the Storm Prediction Center
Chance of a watch
5%
All 30 counties

Boone County, KY, Bracken County, KY, Campbell County, KY, Grant County, KY, Harrison County, KY, Kenton County, KY, Mason County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Delaware County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Logan County, OH, Madison County, OH, Marion County, OH, Montgomery County, OH, Pickaway County, OH, Union County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 11 km from the middle of the area, began a volume at 19:07 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

Pittsburgh, PA (KAGC), launched 12:00Z, 7.1 hours before the alert went out and 347 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2013-10-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 561 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2013-10-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
561 J/kg
Mixed-layer CIN
-32 J/kg
Mixed-layer LCL
845 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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.

IssuedProductOfficeCountiesLasted
Oct 5, 8:01 PM EDTMesoscale DiscussionSPCAnderson, Boyle, Breckinridge, Bullitt, Butler, Calloway and 27 more119 min
Oct 5, 9:42 PM EDTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more5 hr
Oct 5, 11:53 PM EDTMesoscale DiscussionSPCCaldwell, Christian, Crittenden, Graves, Henderson, Hopkins and 6 more97 min
Oct 6, 12:49 AM EDTMesoscale DiscussionSPCBreckinridge, Bullitt, Jefferson, Meade, Oldham, Shelby and 1 more56 min
Oct 6, 2:32 AM EDTMesoscale DiscussionSPCBoone, Breckinridge, Bullitt, Butler, Carroll, Christian and 14 more58 min
Oct 6, 1:27 PM EDTMesoscale DiscussionSPCAdair, Bath, Boyd, Breathitt, Carter, Casey and 30 more3 hr

Nearby

Mesoscale Discussions in Ohio, 2013Mesoscale Discussions in Kentucky, 2013Every mesoscale discussion in 2013

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.