Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 749

May 5, 200311 counties in Indiana; 44 counties in Kentucky; 35 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at May 5, 2003, 12:37 AM EDT for 11 counties in Indiana; 44 counties in Kentucky; 35 counties in Tennessee. It was in force for 23 min.

The area

The outline as issued.

The facts

Issued
May 5, 2003, 12:37 AM EDT (04:37 UTC)
Expired
May 5, 2003, 1:00 AM EDT
In force
23 min
Issued by
the Storm Prediction Center
All 90 counties

Clark County, IN, Crawford County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Orange County, IN, Perry County, IN, Scott County, IN, Spencer County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Carroll County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Franklin County, KY, Gallatin County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jefferson County, KY, Larue County, KY, Logan County, KY, Marion County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Nelson County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Russell County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Woodford County, KY, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hickman County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Moore County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Louisville radar (KLVX), 72 km from the middle of the area, began a volume at 04:41 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.6 hours before the alert went out and 142 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 00:00Z on 2003-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 117 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 00:00Z on 2003-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 293 square meters per square second.19395878Sfc1 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
117 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1192 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
293 m²/s²
0-3 km storm-relative helicity
530 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.

664 
ACUS11 KWNS 050438
SWOMCD
SPC MCD 050437 
KYZ000-TNZ000-INZ000-050500-

MESOSCALE DISCUSSION 0749
NWS STORM PREDICTION CENTER NORMAN OK
1137 PM CDT SUN MAY 04 2003

AREAS AFFECTED...PORTIONS OF MIDDLE TN/WRN KY/FAR SRN IND

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 050437Z - 050500Z

NEW TORNADO WATCH WILL BE ISSUED SHORTLY FOR PORTIONS OF MIDDLE TN
INTO WRN KY AND FAR SRN IND.

OBJECTIVE/MESOANALYSES SHOW THE WARM FRONT CONTINUES TO LIFT NEWD
THROUGH SRN IL AND WRN KY...WITH 00Z ETA/RUC MODELS SHOWING THIS
BOUNDARY LIFTING NWD THROUGH IL/IND THROUGH 09Z.  WARM SECTOR
REMAINS MODERATELY UNSTABLE WITH DEEP LAYER SHEAR FAVORABLE FOR
DISCRETE SUPERCELLS INTO THE OVERNIGHT HOURS AS STORMS SPREAD INTO
MIDDLE TN/WRN KY AND FAR SRN IND.

..PETERS.. 05/05/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MRX...JKL...ILN...LMK...OHX...IND...PAH...

38588710 38818539 38748466 36848482 35078565 35098794
37258709

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 9:05 PM EDTMesoscale DiscussionSPCPosey85 min
May 4, 10:26 PM EDTMesoscale DiscussionSPCPosey2 hr
May 4, 11:40 PM EDTTornado WatchSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick5 hr
May 5, 12:45 AM EDTTornado WatchSPCClark, Crawford, Floyd, Harrison, Orange, Perry and 1 more5 hr
May 5, 2:30 AM EDTMesoscale DiscussionSPCGibson, Pike, Posey, Spencer, Vanderburgh, Warrick90 min
May 5, 2:46 AM EDTMesoscale DiscussionSPCBartholomew, Boone, Brown, Clay, Clinton, Crawford and 34 more89 min
May 5, 3:31 AM EDTMesoscale DiscussionSPCCrawford, Floyd, Harrison89 min
May 5, 4:41 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick34 min
May 5, 4:50 AM EDTTornado WatchSPCGibson, Posey, Spencer, Vanderburgh, Warrick6 hr
May 5, 7:32 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick88 min
May 5, 8:35 AM EDTTornado WatchSPCHarrison, Perry5 hr
May 5, 10:19 AM EDTMesoscale DiscussionSPCGibson, Posey, Spencer, Vanderburgh, Warrick56 min
May 5, 11:12 AM EDTMesoscale DiscussionSPCHarrison, Perry93 min
May 5, 12:59 PM EDTMesoscale DiscussionSPCHarrison, Perry61 min
May 5, 1:20 PM EDTTornado WatchSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 6 more7 hr
May 5, 3:47 PM EDTMesoscale DiscussionSPCCrawford, Dubois, Floyd, Gibson, Harrison, Perry and 4 more118 min
May 5, 5:27 PM EDTMesoscale DiscussionSPCSteuben3 hr
May 5, 5:42 PM EDTMesoscale DiscussionSPCOhio3 hr
May 5, 7:33 PM EDTMesoscale DiscussionSPCClark, Crawford, Dubois, Floyd, Gibson, Harrison and 6 more57 min
May 4, 8:34 PM EDTMesoscale DiscussionSPCBallard, Caldwell, Calloway, Carlisle, Christian, Fulton and 7 more116 min
May 5, 2:20 AM EDTTornado WatchSPCBallard, Caldwell, Calloway, Carlisle, Christian, Fulton and 7 more6 hr
May 5, 5:18 AM EDTMesoscale DiscussionSPCAllen, Ballard, Barren, Butler, Caldwell, Calloway and 19 more57 min
May 5, 5:55 AM EDTTornado WatchSPCFulton6 hr
May 5, 10:35 AM EDTTornado WatchSPCCalloway, Fulton5 hr
May 5, 12:06 PM EDTMesoscale DiscussionSPCFulton114 min
May 5, 3:13 PM EDTMesoscale DiscussionSPCFulton62 min
May 5, 3:35 PM EDTTornado WatchSPCFulton7 hr
May 5, 6:15 PM EDTTornado WatchSPCBracken, Campbell, Grant, Greenup, Kenton, Lewis and 4 more5 hr
May 5, 7:47 PM EDTMesoscale DiscussionSPCBath, Bourbon, Boyd, Bracken, Campbell, Carter and 15 more88 min
May 5, 4:15 AM EDTTornado WatchSPCAnderson, Bledsoe, Blount, Bradley, Campbell, Claiborne and 25 more6 hr
May 5, 7:07 AM EDTMesoscale DiscussionSPCAnderson, Bledsoe, Bradley, Cumberland, Fentress, Grundy and 15 more83 min
May 5, 8:11 AM EDTMesoscale DiscussionSPCBedford, Benton, Cannon, Carroll, Cheatham, Chester and 49 more2 hr
May 5, 9:50 AM EDTTornado WatchSPCBledsoe, Blount, Bradley, Grundy, Hamilton, Loudon and 8 more6 hr
May 5, 10:05 AM EDTMesoscale DiscussionSPCBedford, Benton, Cannon, Carroll, Cheatham, Chester and 42 more115 min
May 5, 1:52 PM EDTMesoscale DiscussionSPCBledsoe, Blount, Bradley, Hamilton, McMinn, Marion and 5 more113 min
May 5, 6:18 PM EDTMesoscale DiscussionSPCDyer, Lake, Lauderdale117 min
May 5, 6:40 PM EDTMesoscale DiscussionSPCChester, Fayette, Franklin, Giles, Hardeman, Hardin and 7 more2 hr

Nearby

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