Alert archive / Kentucky / Mesoscale Discussions in 2006
Mesoscale Discussion 252
The Storm Prediction Center issued this mesoscale discussion at Mar 12, 2006, 7:54 AM EST for Perry County, Spencer County, Indiana; 34 counties in Kentucky. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- Mar 12, 2006, 7:54 AM EST (12:54 UTC)
- Expired
- Mar 12, 2006, 9:30 AM EST
- In force
- 96 min
- Issued by
- the Storm Prediction Center
All 36 counties
Perry County, IN, Spencer County, IN, Adair County, KY, Allen County, KY, Barren County, KY, Breckinridge County, KY, Butler County, KY, Caldwell County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Larue County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Metcalfe County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Warren County, KY, Webster County, KY
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 0.9 hours before the alert went out and 126 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
- 482 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 731 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 237 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 121254 SWOMCD SPC MCD 121254 KYZ000-INZ000-TNZ000-ILZ000-121430- MESOSCALE DISCUSSION 0252 NWS STORM PREDICTION CENTER NORMAN OK 0654 AM CST SUN MAR 12 2006 AREAS AFFECTED...WRN AND CNTRL KY CONCERNING...TORNADO WATCH 68... VALID 121254Z - 121430Z POTENTIAL FOR ISOLATED DAMAGING WINDS AND PERHAPS A TORNADO IS EXPECTED TO CONTINUE THIS MORNING ACROSS PORTIONS OF WRN AND PERHAPS INTO CNTRL KY. CONVECTIVE TRENDS ARE BEING MONITORED FOR A POSSIBLE WW. AS OF 1245Z...REGIONAL RADAR IMAGERY INDICATED A FAIRLY LONG LIVED INFLECTION OR BOWING PORTION OF ENE-WSW ORIENTED CONVECTIVE LINE JUST S OF THE OH RIVER OVER WEBSTER...CRITTENDEN AND LIVINGSTON COUNTIES IN WRN KY MOVING APPROXIMATELY 270/40 KTS. THIS BOWING FEATURE HAS A HISTORY OF PRODUCING DAMAGING WINDS EARLIER OVER FAR SRN IL. MODIFICATION OF 12Z BNA SOUNDING FOR PROXIMITY INFLOW AIR MASS /I.E. BWG/ INDICATES A WEAKLY UNSTABLE ENVIRONMENT FOR SURFACE-BASED PARCELS WITH SBCAPES OF 800-1000 J/KG. HOWEVER...THIS SOUNDING AND LOCAL VWPS CONTINUE TO INDICATE RATHER STRONG LOW AND DEEP-LAYER SHEAR ACROSS REGION WITH 0-1 KM SRH OF 250-350 M2/S2 AND 0-6 KM SHEAR VALUES OF 40-50 KTS...RESPECTIVELY. GIVEN THAT AIR MASS SHOULD FURTHER DESTABILIZE THROUGH THE MORNING OWING TO INCREASED DIABATIC HEATING...IT APPEARS THAT SOME POTENTIAL FOR ISOLATED DAMAGING WINDS AND PERHAPS A TORNADO MAY DEVELOP INTO CNTRL KY. ..MEAD.. 03/12/2006 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...LMK...OHX...PAH... 36708808 37178841 37818802 38188688 37788552 37388491 36868526 36628670
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 9:06 PM EST | Mesoscale Discussion | SPC | Benton, Clay, Fountain, Jasper, Montgomery, Newton and 6 more | 84 min |
| Mar 11, 10:11 PM EST | Mesoscale Discussion | SPC | Gibson, Knox, Parke, Posey, Sullivan, Vigo | 94 min |
| Mar 11, 11:50 PM EST | Mesoscale Discussion | SPC | Crawford, Dubois, Gibson, Orange, Perry, Pike and 4 more | 55 min |
| Mar 12, 12:10 AM EST | Tornado Watch | SPC | Daviess, Gibson, Knox, Pike, Posey, Spencer and 2 more | 2 hr |
| Mar 12, 2:07 AM EST | Tornado Watch | SPC | Crawford, Daviess, Dubois, Gibson, Jackson, Knox and 10 more | 7 hr |
| Mar 12, 4:39 AM EST | Mesoscale Discussion | SPC | Daviess, Dubois, Gibson, Knox, Martin, Perry and 5 more | 96 min |
| Mar 12, 2:02 PM EST | Mesoscale Discussion | SPC | Crawford, Dubois, Gibson, Harrison, Perry, Pike and 4 more | 88 min |
| Mar 12, 5:22 PM EST | Mesoscale Discussion | SPC | Lake, Porter | 53 min |
| Mar 12, 5:49 PM EST | Tornado Watch | SPC | Benton, Jasper, Lake, Newton, Porter | 5 hr |
| Mar 12, 6:54 PM EST | Mesoscale Discussion | SPC | Allen, DeKalb, Elkhart, Fulton, Huntington, Kosciusko and 10 more | 96 min |
Nearby
Mesoscale Discussions in Kentucky, 2006Mesoscale Discussions in Indiana, 2006Every mesoscale discussion in 2006
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.