Alert archive / Kentucky / Mesoscale Discussions in 2016
Mesoscale Discussion 466
The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2016, 8:20 PM EDT for 4 states. It was in force for 55 min.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2016, 8:20 PM EDT (00:20 UTC)
- Expired
- Apr 26, 2016, 9:15 PM EDT
- In force
- 55 min
- Issued by
- the Storm Prediction Center
All 150 counties
Bartholomew County, IN, Brown County, IN, Clark County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Bracken County, KY, Breathitt County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clay County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Gallatin County, KY, Garrard County, KY, Grant County, KY, Grayson County, KY, Green County, KY, Greenup County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Hopkins County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Johnson County, KY, Kenton County, KY, Knott County, KY, Larue County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, McLean County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott 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, Wolfe County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Clermont County, OH, Gallia County, OH, Hamilton County, OH, Highland County, OH, Jackson County, OH, Lawrence County, OH, Pike County, OH, Scioto County, OH, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Fayette County, WV, Greenbrier County, WV, Jackson County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, McDowell County, WV, Mingo County, WV, Nicholas County, WV, Putnam County, WV, Raleigh County, WV, Roane County, WV, Summers County, WV, Wayne County, WV, Webster County, WV, Wyoming County, WV
The radar
The Jackson,KY radar (KJKL), 111 km from the middle of the area, began a volume at 00:22 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.3 hours before the alert went out and 189 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
- 435 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1038 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 25 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
132
ACUS11 KWNS 270020
SWOMCD
SPC MCD 270020
WVZ000-VAZ000-OHZ000-KYZ000-INZ000-270115-
MESOSCALE DISCUSSION 0466
NWS STORM PREDICTION CENTER NORMAN OK
0720 PM CDT TUE APR 26 2016
AREAS AFFECTED...PORTIONS OF SRN IND...MUCH OF KY...SRN
OH...WV...AND FAR WRN VA
CONCERNING...SEVERE THUNDERSTORM WATCH 110...111...
VALID 270020Z - 270115Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
110...111...CONTINUES.
SUMMARY...AN ONGOING LINE OF THUNDERSTORMS ACROSS SRN IND INTO
WRN/CNTRL KY WILL POSE MAINLY A DAMAGING WIND THREAT. SCATTERED
CONVECTION AHEAD OF THIS LINE WILL CONTINUE TO HAVE AN ISOLATED
LARGE HAIL AND STRONG/GUSTY WIND THREAT.
DISCUSSION...MCS ACROSS SRN IND INTO WRN/CNTRL KY IS MOVING EWD
AROUND 40-45 KT AS OF 00Z. BASE VELOCITY DATA FROM KLVX SHOW 50+ KT
INBOUND VELOCITIES ASSOCIATED WITH THIS MCS AT 1500 FT AGL. SFC
OBSERVATIONS AND SPOTTER REPORTS SUGGEST SFC WINDS ARE NEAR/ABOVE
SEVERE LEVELS. THE ENVIRONMENT DOWNSTREAM IS WEAKLY UNSTABLE...WITH
MLCAPE OF 500-1000 J/KG. THIS SUFFICIENT INSTABILITY COMBINED WITH
MODESTLY ENHANCED MID-LEVEL FLOW SHOULD ALLOW STRONG TO DAMAGING
WINDS TO REMAIN THE PRIMARY THREAT WITH THIS ONGOING MCS AS IT MOVES
EWD ACROSS KY AND SRN IND OVER THE NEXT SEVERAL HOURS. SCATTERED
CLUSTERS OF CONVECTION ACROSS ERN KY...SRN OH...AND WV TO THE S OF A
COLD FRONT WILL CONTINUE TO POSE AN ISOLATED LARGE HAIL AND
STRONG/GUSTY WIND THREAT. OVERALL...SEVERE THREAT ACROSS WW 110 AND
111 SHOULD GRADUALLY DIMINISH OVER THE NEXT FEW HOURS AS INSTABILITY
WEAKENS AND ONGOING CONVECTION PROBABLY BECOMES SLIGHTLY ELEVATED.
..GLEASON.. 04/27/2016
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...RNK...RLX...JKL...ILN...LMK...IND...PAH...
LAT...LON 36698772 37278762 38438690 39318659 39398418 39288277
38638028 37957977 37408117 37138398 36928510 36678523
36698772SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 6:11 PM EDT | Tornado Watch | SPC | Dubois, Gibson, Perry, Pike, Posey, Spencer and 2 more | 3 hr |
| Apr 27, 4:28 PM EDT | Mesoscale Discussion | SPC | Calloway, Graves, Trigg | 2 hr |
Nearby
Mesoscale Discussions in Kentucky, 2016Mesoscale Discussions in Indiana, 2016Mesoscale Discussions in West Virginia, 2016Every mesoscale discussion in 2016
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.