Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 2490

November 12, 200326 counties in Indiana; 16 counties in Kentucky; 32 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Nov 12, 2003, 2:36 PM EST for 26 counties in Indiana; 16 counties in Kentucky; 32 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Nov 12, 2003, 2:36 PM EST (19:36 UTC)
Expired
Nov 12, 2003, 5:00 PM EST
In force
2 hr
Issued by
the Storm Prediction Center
All 74 counties

Bartholomew County, IN, Brown County, IN, Clark County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Hancock County, IN, Henry County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Ohio County, IN, Orange County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Switzerland County, IN, Union County, IN, Washington County, IN, Wayne County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Harrison County, KY, Henry County, KY, Kenton County, KY, Lewis County, KY, Mason County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY, Trimble County, KY, Adams County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Scioto County, OH, Shelby County, OH, Union County, OH, Vinton County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 72 km from the middle of the area, began a volume at 19:36 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 74 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, Cncnati-Daytn, OH at 12:00Z on 2003-11-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Cncnati-Daytn, OH at 12:00Z on 2003-11-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.1939587897117136Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
604 m above ground
0-6 km bulk shear
98 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
120 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.

IssuedProductOfficeCountiesLasted
Nov 12, 12:45 PM ESTMesoscale DiscussionSPCAdams, Allen, DeKalb, Huntington, Kosciusko, LaGrange and 5 more3 hr
Nov 12, 3:20 PM ESTTornado WatchSPCAdams, Dearborn, Fayette, Franklin, Jay, Randolph and 3 more6 hr
Nov 12, 3:26 PM ESTMesoscale DiscussionSPCAdams, Allen, Blackford, DeKalb, Delaware, Jay and 2 more2 hr
Nov 12, 6:13 PM ESTMesoscale DiscussionSPCAdams, Dearborn, Fayette, Franklin, Jay, Randolph and 3 more2 hr
Nov 12, 12:13 PM ESTMesoscale DiscussionSPCAdair, Allen, Anderson, Ballard, Barren, Boyle and 62 more2 hr
Nov 12, 1:50 PM ESTSevere Thunderstorm WatchSPCAllen, Ashland, Ashtabula, Carroll, Columbiana, Crawford and 30 more5 hr
Nov 12, 4:40 PM ESTTornado WatchSPCAshland, Ashtabula, Columbiana, Crawford, Cuyahoga, Erie and 19 more5 hr

Nearby

Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Kentucky, 2003Every mesoscale discussion in 2003

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.