Alert archive / Kentucky / Mesoscale Discussions in 2003
Mesoscale Discussion 792
The Storm Prediction Center issued this mesoscale discussion at May 6, 2003, 12:45 PM CDT for 26 counties in Kentucky. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 6, 2003, 12:45 PM CDT (17:45 UTC)
- Expired
- May 6, 2003, 2:45 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 26 counties
Barren County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Casey County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Hopkins County, KY, Larue County, KY, Logan County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Spencer County, KY, Taylor County, KY, Todd County, KY, Warren County, KY, Washington County, KY
The radar
The Louisville radar (KLVX), 68 km from the middle of the area, began a volume at 17:44 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, 5.8 hours before the alert went out and 153 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 862 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
789 ACUS11 KWNS 061745 SWOMCD SPC MCD 061745 KYZ000-INZ000-061945- MESOSCALE DISCUSSION 0792 NWS STORM PREDICTION CENTER NORMAN OK 1245 PM CDT TUE MAY 06 2003 AREAS AFFECTED...WRN/CNTRL KY CONCERNING...SEVERE THUNDERSTORM POTENTIAL VALID 061745Z - 061945Z ISOLATED CONVECTION WILL CONTINUE TO DEVELOP ACROSS WRN KY AND MOVE EWD. ACTIVITY IS EXPECTED TO INCREASE IN INTENSITY AND LARGE HAIL WILL BE POSSIBLE. WW MAY BE NEEDED OVER THE NEXT FEW HOURS. DIFFUSE COLD FRONT EXTENDED FROM CNTRL OH SWWD TO SRN IL. MODERATE INSTABILITY HAD DEVELOPED IN THE WARM SECTOR S OF THE FRONT WITH MLCAPES AROUND 1500-2000 J/KG. DEEP LAYER SHEAR MAX OF 60 KT EXISTED ACROSS WCNTRL KY AND WAS ASSOCIATED WITH A MID-LEVEL JET APPROACHING FROM THE SW. CONVECTION SHOULD CONTINUE TO DEVELOP IN AN AREA OF INCREASING LOW-LEVEL CONVERGENCE ACROSS WRN KY. MODERATE INSTABILITY AND STRONG DEEP LAYER SHEAR SUGGEST A SUPERCELL IS POSSIBLE. LARGE HAIL POTENTIAL WILL EXIST IF A SUPERCELL CAN DEVELOP. WW MAY BE NECESSARY ACROSS CNTRL KY LATER THIS AFTERNOON. ..BROYLES.. 05/06/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LMK...PAH... 37468776 37918668 38148578 38168510 37288484 36878620 36708736
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 10:58 PM CDT | Mesoscale Discussion | SPC | Henderson, Union | 2 hr |
| May 6, 10:55 AM CDT | Mesoscale Discussion | SPC | Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 9 more | 2 hr |
| May 6, 11:55 AM CDT | Severe Thunderstorm Watch | SPC | Hancock, Henderson | 4 hr |
| May 6, 1:23 PM CDT | Mesoscale Discussion | SPC | Henderson | 2 hr |
| May 6, 5:40 PM CDT | Tornado Watch | SPC | Ballard, Caldwell, Carlisle, Christian, Crittenden, Graves and 12 more | 6 hr |
Nearby
Mesoscale 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.