Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 788

May 6, 200329 counties in Indiana; 15 counties in Kentucky; 32 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at May 6, 2003, 10:55 AM EST for 29 counties in Indiana; 15 counties in Kentucky; 32 counties in Ohio. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2003, 10:55 AM EST (15:55 UTC)
Expired
May 6, 2003, 1:00 PM EST
In force
2 hr
Issued by
the Storm Prediction Center
All 76 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, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Lawrence County, IN, Monroe County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Perry 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, Henry County, KY, Jefferson County, KY, Kenton County, KY, Mason County, KY, Oldham County, KY, Owen County, KY, Pendleton County, KY, Shelby County, KY, Trimble County, KY, Adams County, OH, Athens County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Coshocton 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, Licking County, OH, Madison County, OH, Miami County, OH, Montgomery County, OH, Morgan County, OH, Muskingum County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Preble County, OH, Ross County, OH, Union County, OH, Vinton County, OH, Warren County, OH

The radar

The Cincinnati radar (KILN), 84 km from the middle of the area, began a volume at 15:57 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 12:00Z, 3.9 hours before the alert went out and 86 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 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 633 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 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.1939587897117Sfc1 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
633 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
496 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.3
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.

IssuedProductOfficeCountiesLasted
May 5, 10:58 PM ESTMesoscale DiscussionSPCBartholomew, Clark, Crawford, Decatur, Dubois, Floyd and 16 more2 hr
May 6, 9:37 AM ESTMesoscale DiscussionSPCClay, Daviess, Dubois, Gibson, Greene, Knox and 5 more113 min
May 6, 11:55 AM ESTSevere Thunderstorm WatchSPCDaviess, Dubois, Gibson, Greene, Knox, Pike and 5 more4 hr
May 6, 1:23 PM ESTMesoscale DiscussionSPCDaviess, Dubois, Gibson, Knox, Pike, Posey and 4 more2 hr
May 6, 5:40 PM ESTTornado WatchSPCGibson, Knox, Pike, Posey, Sullivan, Vanderburgh and 1 more6 hr
May 6, 12:45 PM ESTMesoscale DiscussionSPCBarren, Breckinridge, Bullitt, Butler, Casey, Daviess and 20 more2 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.