Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 670

May 1, 200358 counties in Kentucky; 10 counties in Ohio; 31 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 1, 2003, 5:11 PM CDT for 58 counties in Kentucky; 10 counties in Ohio; 31 counties in Tennessee. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
May 1, 2003, 5:11 PM CDT (22:11 UTC)
Expired
May 1, 2003, 6:45 PM CDT
In force
94 min
Issued by
the Storm Prediction Center
All 99 counties

Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Campbell County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Green County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mason County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Owen County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Clermont County, OH, Hamilton County, OH, Highland County, OH, Jackson County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Vinton County, OH, Bedford County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Jackson County, TN, Lawrence County, TN, Lincoln County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Louisville radar (KLVX), 113 km from the middle of the area, began a volume at 22:15 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

Nashville Metro, TN (KBNA), launched 12:00Z, 10.2 hours before the alert went out and 174 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, Nashville Metro, TN at 12:00Z on 2003-05-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 358 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, Nashville Metro, TN at 12:00Z on 2003-05-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.1939Sfc1 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
358 J/kg
Mixed-layer CIN
-109 J/kg
Mixed-layer LCL
1214 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
96 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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
May 1, 7:51 AM CDTMesoscale DiscussionSPCBallard, Carlisle, Livingston, McCracken, Union114 min
May 1, 9:35 AM CDTSevere Thunderstorm WatchSPCBallard, Carlisle, Crittenden, Fulton, Graves, Hickman and 5 more5 hr
May 1, 11:23 AM CDTMesoscale DiscussionSPCButler, Caldwell, Calloway, Christian, Hopkins, Logan and 10 more2 hr
May 1, 12:15 PM CDTSevere Thunderstorm WatchSPCBreckinridge, Bullitt, Butler, Caldwell, Calloway, Christian and 27 more5 hr
May 1, 2:35 PM CDTSevere Thunderstorm WatchSPCAdair, Allen, Anderson, Barren, Bath, Bourbon and 53 more5 hr
May 1, 6:10 PM CDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Boone and 52 more95 min
Apr 30, 8:48 PM CDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Crawford, Cuyahoga, Defiance and 25 more87 min
May 1, 11:41 AM CDTMesoscale DiscussionSPCColumbiana, Mahoning, Portage, Trumbull3 hr
May 1, 12:09 PM CDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Champaign, Crawford, Darke and 24 more3 hr
May 1, 12:50 PM CDTSevere Thunderstorm WatchSPCAllen, Ashland, Ashtabula, Auglaize, Belmont, Butler and 56 more5 hr
May 1, 3:10 PM CDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Belmont, Butler, Carroll and 51 more95 min
May 1, 5:55 PM CDTSevere Thunderstorm WatchSPCAshland, Auglaize, Butler, Champaign, Clark, Clinton and 24 more4 hr
May 1, 10:22 AM CDTMesoscale DiscussionSPCBlount, Carter, Cocke, Greene, Hawkins, Jefferson and 7 more113 min

Nearby

Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Ohio, 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.