Alert archive / Kentucky / Mesoscale Discussions in 2004
Mesoscale Discussion 913
The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 2:18 PM EDT for 4 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2004, 2:18 PM EDT (18:18 UTC)
- Expired
- May 26, 2004, 3:45 PM EDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
All 105 counties
Clark County, IN, Crawford County, IN, Floyd County, IN, Harrison County, IN, Jefferson County, IN, Ohio County, IN, Perry County, IN, Scott County, IN, Switzerland 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, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Christian County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming 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, Kenton County, KY, Larue County, KY, Lee County, KY, Lewis County, KY, Lincoln County, KY, Logan County, KY, Lyon County, KY, Madison County, KY, Marion County, KY, Marshall 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, Pendleton 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, Trigg County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Brown County, OH, Gallia County, OH, Jackson County, OH, Lawrence County, OH, Scioto County, OH, Mason County, WV
The radar
The Louisville radar (KLVX), 66 km from the middle of the area, began a volume at 18:19 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
Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.3 hours before the alert went out and 193 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
- 318 J/kg
- Mixed-layer CIN
- -97 J/kg
- Mixed-layer LCL
- 632 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 112 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
703 ACUS11 KWNS 261819 SWOMCD SPC MCD 261818 WVZ000-OHZ000-KYZ000-TNZ000-INZ000-261945- MESOSCALE DISCUSSION 0913 NWS STORM PREDICTION CENTER NORMAN OK 0118 PM CDT WED MAY 26 2004 AREAS AFFECTED...MUCH OF KY...FAR SERN IND/SRN OH INTO FAR WRN WV CONCERNING...SEVERE THUNDERSTORM WATCH 293... VALID 261818Z - 261945Z POTENTIAL FOR DAMAGING WINDS AND LARGE HAIL CONTINUES ACROSS WW AREA. LARGE MCS IS IN PROGRESS OVER MUCH OF WRN/CNTRL KY INTO SRN OH THIS AFTERNOON WITH SYSTEM MOVEMENT EWD OR ESEWD AT 40-50KTS. SRN PORTION OF COMPLEX REMAINS MOST INTENSE FROM BULLITT/HARDIN COUNTIES SWWD INTO MUHLENBERG/HOPKINS COUNTIES INTO WRN KY. ADDITIONAL MORE ISOLATED STORMS HAVE ALSO DEVELOPED DOWNSTREAM OVER ROBERTSON...NICHOLAS AND BOURBON COUNTIES IN CNTRL KY. REGIONAL RADAR TRENDS OVER THE PAST COUPLE OF HOURS INDICATE A SLOW TRANSITION OF LOWER REFLECTIVITIES FROM UPSHEAR TO DOWNSHEAR OF PRIMARY CONVECTIVE LINE. THIS SUGGESTS THAT MID AND HIGH-LEVEL SYSTEM RELATIVE WINDS ARE QUITE STRONG AND THIS IS LIKELY AIDING IN THE DOWNSTREAM CONVECTIVE DEVELOPMENT. MOREOVER...THIS EVOLUTION SUGGESTS THAT DEVELOPMENT OF A BROADER-SCALE REAR INFLOW JET WILL LIKELY BE HINDERED WITH DAMAGING WIND CORRIDORS REMAINING MORE LOCALIZED TO SMALLER-SCALE BOWS. ADDITIONALLY...PRESENCE OF EMBEDDED SUPERCELLS INDICATES A CONTINUED THREAT OF LARGE HAIL. ..MEAD.. 05/26/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RLX...JKL...ILN...LMK...OHX...IND...PAH... 39058543 39058150 36628494 36638873
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 25, 8:28 PM EDT | Mesoscale Discussion | SPC | Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 19 more | 92 min |
| May 26, 9:20 AM EDT | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 22 more | 85 min |
| May 26, 9:50 AM EDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 19 more | 5 hr |
| May 26, 11:50 AM EDT | Mesoscale Discussion | SPC | Clark, Crawford, Daviess, Dubois, Floyd, Gibson and 19 more | 85 min |
| May 26, 12:25 PM EDT | Severe Thunderstorm Watch | SPC | Clark, Crawford, Floyd, Harrison, Jefferson, Ohio and 3 more | 7 hr |
| May 26, 1:38 PM EDT | Mesoscale Discussion | SPC | Bell, Floyd, Harlan, Johnson, Knott, Knox and 5 more | 97 min |
| May 26, 2:10 PM EDT | Tornado Watch | SPC | Ballard, Carlisle, Fulton, Hickman, McCracken | 8 hr |
| May 26, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | Bell, Boyd, Breathitt, Clay, Elliott, Floyd and 18 more | 7 hr |
| May 26, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Barren, Bell, Butler, Caldwell and 37 more | 6 hr |
| May 26, 4:32 PM EDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Fulton, Hickman, McCracken | 88 min |
| May 26, 6:27 PM EDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Bell, Butler, Caldwell and 31 more | 93 min |
| May 26, 6:57 PM EDT | Mesoscale Discussion | SPC | Ballard, Carlisle, Fulton, Hickman | 93 min |
| May 26, 12:55 PM EDT | Mesoscale Discussion | SPC | Barbour, Braxton, Calhoun, Clay, Doddridge, Fayette and 26 more | 95 min |
| May 26, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Berkeley, Jefferson | 5 hr |
Nearby
Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Ohio, 2004Every mesoscale discussion in 2004
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.