Alert archive / Kentucky / Mesoscale Discussions in 2012
Mesoscale Discussion 142
The Storm Prediction Center issued this mesoscale discussion at Feb 22, 2012, 5:43 PM CST for 29 counties in Kentucky. It was in force for 92 min.
The area
The outline as issued.
The facts
- Issued
- Feb 22, 2012, 5:43 PM CST (23:43 UTC)
- Expired
- Feb 22, 2012, 7:15 PM CST
- In force
- 92 min
- Issued by
- the Storm Prediction Center
All 29 counties
Adair County, KY, Allen County, KY, Barren County, KY, Boyle County, KY, Butler County, KY, Casey County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hart County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Marion County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Pulaski County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Washington County, KY, Wayne County, KY
The radar
The Louisville radar (KLVX), 84 km from the middle of the area, began a volume at 23:46 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, 11.7 hours before the alert went out and 135 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
- 2212 m above ground
- 0-6 km bulk shear
- 91 kt
- 0-1 km storm-relative helicity
- 217 m²/s²
- 0-3 km storm-relative helicity
- 295 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
674
ACUS11 KWNS 222343
SWOMCD
SPC MCD 222343
KYZ000-TNZ000-230115-
MESOSCALE DISCUSSION 0142
NWS STORM PREDICTION CENTER NORMAN OK
0543 PM CST WED FEB 22 2012
AREAS AFFECTED...S-CNTRL KY
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 222343Z - 230115Z
A WEST TO EAST ORIENTED LINE OF CONVECTION WILL CONTINUE TO TRACK
EAST-SOUTHEAST THIS EVENING. MARGINALLY SEVERE HAIL AND GUSTY WINDS
WILL BE POSSIBLY WITH THE STRONGEST CELLS WITHIN THIS LINE.
A LINE OF STORMS HAD DEVELOPED ACROSS SOUTH CENTRAL KENTUCKY LATE
THIS AFTERNOON ALONG A ZONE OF WEAK SFC CONFLUENCE. WHILE THERE IS
VERY LITTLE INSTABILITY TO WORK WITH DUE TO THE COOL/LOW DEWPOINT
ENVIRONMENT...UPDRAFTS ARE EXPECTED TO REMAIN RATHER WEAK.
HOWEVER...MIDLEVEL LAPSE RATES NEAR 6.5 TO 7 C/KM AND VERY COLD
TEMPERATURES ALOFT /NEAR -22 C AT 500 MB AND AROUND -8 AT 700
MB/...SPORADIC EPISODES OF MARGINALLY SEVERE HAIL WILL BE POSSIBLE
IN AN OTHERWISE FAVORABLY SHEARED ENVIRONMENT. ADDITIONALLY...GIVEN
THE STRONG DEEP LAYER FLOW /EFFECTIVE BULK SHEAR GREAT THAN 40
KT/...SOME GUSTY WINDS WILL ALSO BE POSSIBLE.
STORMS SHOULD EVENTUALLY WEAKEN WITHIN A FEW HOURS AFTER SUNSET AS
THE ENVIRONMENT COOLS AND BECOMES MORE STABLE.
..LEITMAN.. 02/22/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...JKL...LMK...OHX...PAH...
LAT...LON 37408678 37978439 37708413 36658481 36618663 36708715
37348685 37408678Nearby
Mesoscale Discussions in Kentucky, 2012Every mesoscale discussion in 2012
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.