Alert archive / Kentucky / Mesoscale Discussions in 2004
Mesoscale Discussion 962
The Storm Prediction Center issued this mesoscale discussion at May 28, 2004, 12:17 AM EDT for 4 states. It was in force for 58 min.
The area
The outline as issued.
The facts
- Issued
- May 28, 2004, 12:17 AM EDT (04:17 UTC)
- Expired
- May 28, 2004, 1:15 AM EDT
- In force
- 58 min
- Issued by
- the Storm Prediction Center
All 80 counties
Anderson County, KY, Bath County, KY, Bell County, KY, Bourbon County, KY, Boyd County, KY, Boyle County, KY, Breathitt County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Floyd County, KY, Franklin County, KY, Garrard County, KY, Harlan County, KY, Jackson County, KY, Jessamine County, KY, Johnson County, KY, Knott County, KY, Knox County, KY, Laurel County, KY, Lawrence County, KY, Lee County, KY, Leslie County, KY, Letcher County, KY, Lincoln County, KY, Madison County, KY, Magoffin County, KY, Martin County, KY, McCreary County, KY, Menifee County, KY, Mercer County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Owsley County, KY, Perry County, KY, Pike County, KY, Powell County, KY, Pulaski County, KY, Rockcastle County, KY, Rowan County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Washington County, KY, Wayne County, KY, Whitley County, KY, Wolfe County, KY, Woodford County, KY, Pickett County, TN, Bland County, VA, Buchanan County, VA, City of Norton, VA, Dickenson County, VA, Giles County, VA, Russell County, VA, Tazewell County, VA, Wise County, VA, Boone County, WV, Fayette County, WV, Greenbrier County, WV, Kanawha County, WV, Lincoln County, WV, Logan County, WV, McDowell County, WV, Mercer County, WV, Mingo County, WV, Monroe County, WV, Nicholas County, WV, Raleigh County, WV, Summers County, WV, Wayne County, WV, Wyoming County, WV
The radar
The Jackson,KY radar (KJKL), 37 km from the middle of the area, began a volume at 04:19 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 nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.3 hours before the alert went out and 172 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
- 290 J/kg
- Mixed-layer CIN
- -54 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 197 m²/s²
- 0-3 km storm-relative helicity
- 353 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.0
The text
As transmitted, in the capitals the NWS used until 2016.
020 ACUS11 KWNS 280418 SWOMCD SPC MCD 280417 WVZ000-VAZ000-KYZ000-OHZ000-TNZ000-280515- MESOSCALE DISCUSSION 0962 NWS STORM PREDICTION CENTER NORMAN OK 1117 PM CDT THU MAY 27 2004 AREAS AFFECTED...ECNTRL/ERN KY AND SRN WV CONCERNING...TORNADO WATCH 315...318... VALID 280417Z - 280515Z SEVERE WEATHER COVERAGE HAS DIMINISHED...BUT THREAT FOR DAMAGING WINDS AND BRIEF TORNADOES CONTINUES. TWO WELL-DEFINED BOW ECHOES CONTINUE TO TRANSLATE EWD ACROSS KY. ONE WAS APPROACHING THE WV/KY BORDER NORTHEAST OF JACKSON IN THE COALFIELDS...THE OTHER UPSTREAM APPROACHING THE LOUISVILLE AREA. OTHER TSTMS TRAIL BACK INTO FAR WEST KY TO NEAR PADUCAH. STORMS ARE EMBEDDED WITHIN A DEEP WLY FLOW REGIME THAT WILL CONTINUE TO ENCOURAGE BOW ECHO DEVELOPMENT AS OUTFLOW BOUNDARIES BECOME ORIENTED PERPENDICULAR TO THE MEAN FLOW. THE MAJORITY OF THE BOW NEAR LOUISVILLE MAY MOVE OVER AREAS WHERE RECENT CONVECTION MOVED THROUGH...AND STRONGER WINDS MAY NOT REACH THE SURFACE AS IT TRACKS TO AREAS NEAR/SOUTH OF LEXINGTON BETWEEN 05-06 UTC. HOWEVER...AIR MASS ACROSS THE REMAINDER OF ECNTRL/ERN KY REMAINS PRIMED FOR TSTMS. ISOLD TORNADOES WILL CONTINUE TO BE A THREAT AS WELL GIVEN THE STRONG SPEED SHEAR IN THE LOWEST LAYERS. BUT THE PRIMARY THREAT WILL BE DAMAGING WINDS. TORNADO WATCH 315 IS SET TO EXPIRE AT 0500 UTC. FAR SWRN PART OF THIS WATCH MAY BE IN LINE FOR DAMAGING WINDS FOR AN HOUR OR SO AFTER EXPIRATION. BUT...A NEW WW IS NOT ANTICIPATED SINCE THE MAJORITY OF THE SEVERE WEATHER SHOULD MOVE INTO TORNADO WATCH 318. ..RACY.. 05/28/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...RNK...RLX...MRX...JKL...ILN...LMK...OHX... 38368546 38458257 38318115 38398035 37168044 36488513 37778518 37878543
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 8:12 PM EDT | Mesoscale Discussion | SPC | Allen, Ballard, Barren, Breckinridge, Bullitt, Butler and 37 more | 93 min |
| May 27, 8:40 PM EDT | Tornado Watch | SPC | Breckinridge, Bullitt, Butler, Caldwell, Crittenden, Daviess and 17 more | 5 hr |
| May 27, 9:53 PM EDT | Mesoscale Discussion | SPC | Boyle, Breathitt, Casey, Clay, Estill, Floyd and 21 more | 97 min |
| May 27, 10:30 PM EDT | Tornado Watch | SPC | Bell, Boyle, Breathitt, Casey, Clay, Clinton and 30 more | 6 hr |
| May 27, 10:39 PM EDT | Mesoscale Discussion | SPC | Anderson, Bath, Bourbon, Boyd, Carter, Elliott and 15 more | 96 min |
| May 27, 11:27 PM EDT | Mesoscale Discussion | SPC | Breckinridge, Bullitt, Butler, Caldwell, Crittenden, Daviess and 16 more | 93 min |
| May 27, 9:01 PM EDT | Mesoscale Discussion | SPC | Albemarle, Arlington, Augusta, Caroline, Clarke, Culpeper and 33 more | 89 min |
| May 28, 12:29 PM EDT | Mesoscale Discussion | SPC | Barbour, Braxton, Cabell, Calhoun, Clay, Doddridge and 21 more | 3 hr |
Nearby
Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in West Virginia, 2004Mesoscale Discussions in Virginia, 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.