Alert archive / Kentucky / Mesoscale Discussions in 2003
Mesoscale Discussion 997
The Storm Prediction Center issued this mesoscale discussion at May 15, 2003, 12:22 PM CDT for 43 counties in Kentucky; 21 counties in Tennessee; 7 counties in Virginia. It was in force for 53 min.
The area
The outline as issued.
The facts
- Issued
- May 15, 2003, 12:22 PM CDT (17:22 UTC)
- Expired
- May 15, 2003, 1:15 PM CDT
- In force
- 53 min
- Issued by
- the Storm Prediction Center
All 71 counties
Adair County, KY, Barren County, KY, Bell County, KY, Boyle County, KY, Breathitt County, KY, Casey County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Estill County, KY, Floyd County, KY, Garrard County, KY, Green County, KY, Harlan County, KY, Jackson County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Metcalfe County, KY, Monroe County, KY, Morgan County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Taylor County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Anderson County, TN, Campbell County, TN, Claiborne County, TN, Clay County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jackson County, TN, Jefferson County, TN, Knox County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Scott County, TN, Sullivan County, TN, Union County, TN, Washington County, TN, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Lee County, VA, Russell County, VA, Scott County, VA, Wise County, VA
The radar
The Jackson,KY radar (KJKL), 88 km from the middle of the area, began a volume at 17:26 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 12:00Z, 5.4 hours before the alert went out and 250 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.
- Mixed-layer CAPE
- 663 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
342 ACUS11 KWNS 151723 SWOMCD SPC MCD 151722 VAZ000-TNZ000-KYZ000-151815- MESOSCALE DISCUSSION 0997 NWS STORM PREDICTION CENTER NORMAN OK 1222 PM CDT THU MAY 15 2003 AREAS AFFECTED...ERN KY...NERN TN...SWRN VA CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 151722Z - 151815Z NEW WW WILL BE ISSUED SOON FOR PARTS OF EASTERN KY...NORTHEAST TN....AND EXTREME SOUTHWEST VA. CLUSTER OF SEVERE THUNDERSTORMS OVER CENTRAL KY CONTINUES TO TRACK EAST-SOUTHEASTWARD...AND WILL MOVE OUT OF WW 378 IN THE NEXT HOUR OR SO. VISIBLE SATELLITE IMAGERY SHOWS OUTFLOW BOUNDARY FROM EARLIER STORMS EXTENDING ROUGHLY FROM GREEN/ADAIR COUNTY KY TO NEAR TRI. STORMS ARE EXPECTED TO FOCUS ALONG THIS AXIS AS THEY SPREAD EASTWARD DURING THE NEXT FEW HOURS. GIVEN TRENDS...NEW WW WILL LIKELY BE ISSUED SHORTLY. ..HART.. 05/15/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RLX...MRX...JKL...LMK...OHX... 37508521 38238343 37918252 37248197 36218233 35818399 36068563 37048612
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 8:15 PM CDT | Mesoscale Discussion | SPC | Crittenden, Henderson, Hopkins, Livingston, McLean, Union and 1 more | 60 min |
| May 14, 8:30 PM CDT | Severe Thunderstorm Watch | SPC | Caldwell, Crittenden, Livingston, Union | 4 hr |
| May 14, 9:24 PM CDT | Mesoscale Discussion | SPC | Carroll, Henry, Oldham, Trimble | 96 min |
| May 14, 10:10 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Carlisle, Crittenden, Fulton, Graves and 5 more | 2 hr |
| May 15, 6:52 AM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Bell, Boyle, Breathitt and 68 more | 2 hr |
| May 15, 10:15 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bath, Boone, Bourbon, Boyle, Bracken and 53 more | 6 hr |
| May 15, 12:50 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Barren, Bell, Boyle, Breathitt, Casey and 41 more | 5 hr |
| May 15, 2:20 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 90 more | 85 min |
| May 15, 4:42 PM CDT | Mesoscale Discussion | SPC | Allen, Caldwell, Calloway, Christian, Graves, Logan and 9 more | 63 min |
| May 15, 5:10 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Christian, Logan, Monroe, Simpson, Todd and 1 more | 6 hr |
| May 15, 11:08 AM CDT | Mesoscale Discussion | SPC | Carter, Johnson | 2 hr |
| May 15, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | Carter, Cocke, Greene, Hamblen, Jefferson, Sevier and 2 more | 6 hr |
| May 15, 5:06 PM CDT | Mesoscale Discussion | SPC | Carter, Cocke, Greene, Hamblen, Jefferson, Sevier and 2 more | 84 min |
| May 15, 6:39 PM CDT | Mesoscale Discussion | SPC | Sevier | 2 hr |
Nearby
Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Virginia, 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.