Alert archive / Kentucky / Mesoscale Discussions in 2003
Mesoscale Discussion 384
The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2003, 11:38 PM EST for 5 states. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Apr 4, 2003, 11:38 PM EST (04:38 UTC)
- Expired
- Apr 5, 2003, 1:15 AM EST
- In force
- 97 min
- Issued by
- the Storm Prediction Center
All 136 counties
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, Breathitt County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Carter County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland 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, Green County, KY, Greenup County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson 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, Madison County, KY, Magoffin County, KY, Marion County, KY, Martin County, KY, Mason County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Morgan County, KY, Nelson County, KY, Nicholas County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Perry 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, Warren County, KY, Washington County, KY, Wayne County, KY, Wolfe County, KY, Woodford County, KY, Adams County, OH, Athens County, OH, Belmont County, OH, Brown County, OH, Carroll County, OH, Clermont County, OH, Clinton County, OH, Coshocton County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Gallia County, OH, Greene County, OH, Guernsey County, OH, Hamilton County, OH, Harrison County, OH, Highland County, OH, Hocking County, OH, Jackson County, OH, Jefferson County, OH, Lawrence County, OH, Licking County, OH, Madison County, OH, Meigs County, OH, Monroe County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Pike County, OH, Ross County, OH, Scioto County, OH, Tuscarawas County, OH, Vinton County, OH, Warren County, OH, Washington County, OH, Beaver County, PA, Washington County, PA, Brooke County, WV, Cabell County, WV, Hancock County, WV, Jackson County, WV, Lincoln County, WV, Marshall County, WV, Mason County, WV, Ohio County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Tyler County, WV, Wayne County, WV, Wetzel County, WV, Wirt County, WV, Wood County, WV
The radar
The Cincinnati radar (KILN), 84 km from the middle of the area, began a volume at 04:42 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 00:00Z, 4.6 hours before the alert went out and 83 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
- 628 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1237 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.2
The text
As transmitted, in the capitals the NWS used until 2016.
903 ACUS11 KWNS 050439 SWOMCD SPC MCD 050438 PAZ000-WVZ000-OHZ000-KYZ000-INZ000-050615- MESOSCALE DISCUSSION 0384 NWS STORM PREDICTION CENTER NORMAN OK 1038 PM CST FRI APR 04 2003 AREAS AFFECTED...SWRN PA/ERN AND SRN OH/WV/KY CONCERNING...TORNADO WATCH 90... VALID 050438Z - 050615Z SEGMENTED SQUALL LINE CURRENTLY ALONG A LINE FROM SWRN OH INTO WRN KY WAS MOVING EWD AT UP TO 50KT. AT THIS SPEED THE LINE WILL MOVE OUT OF WW 90 BY 0600 UTC. PRONOUNCED BOW ECHO WAS MOVING RAPIDLY TOWARD SDF/LOU AREA AND OTHER STRONG PORTIONS ALONG THE LINE WILL CONTINUE TO POSE A THREAT OF DAMAGING WINDS AND HAIL. WATER VAPOR LOOP INDICATES VERY STRONG MID/UPPER WAVE TRANSLATING RAPIDLY EWD ACROSS THE MS VALLEY AND THIS LARGE SCALE FEATURE SHOULD CONTINUE TO SUSTAIN STRONG ASCENT ALONG/AHEAD OF THE COLD FRONT AS IT MOVES EWD UP THE OH VALLEY AND INTO ERN KY OVERNIGHT. VERY STEEP MIDLEVEL LAPSE RATES ATOP MODEST WARM/MOIST AXIS WILL CONTRIBUTE TO MLCAPE VALUES OF 500-1000 J/KG AND FUEL VIGOROUS TSTMS. THUS...EXPECT THE THREAT OF DAMAGING WINDS TO CONTINUE BEYOND 0600 UTC AND ANOTHER WATCH WILL LIKELY BE NECESSARY FROM SRN OH/NRN KY EWD TO PERHAPS WRN PA AND WV. ..CARBIN.. 04/05/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PBZ...RLX...CLE...JKL...ILN...LMK... 39578442 40528204 40847994 40028018 37348283 36758421 36668686
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 4, 7:01 PM EST | Mesoscale Discussion | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 45 more | 59 min |
| Apr 4, 7:30 PM EST | Tornado Watch | SPC | Adams, Bartholomew, Blackford, Boone, Brown, Carroll and 41 more | 6 hr |
| Apr 4, 8:07 PM EST | Mesoscale Discussion | SPC | Gibson, Knox, Pike, Posey, Vanderburgh, Warrick | 83 min |
| Apr 4, 10:00 PM EST | Mesoscale Discussion | SPC | Bartholomew, Clark, Crawford, Dearborn, Decatur, Dubois and 18 more | 90 min |
| Apr 4, 10:20 PM EST | Tornado Watch | SPC | Bartholomew, Clark, Crawford, Dearborn, Decatur, Dubois and 21 more | 5 hr |
| Apr 5, 12:05 AM EST | Severe Thunderstorm Watch | SPC | Adair, Anderson, Barren, Bath, Bourbon, Boyd and 57 more | 5 hr |
| Apr 5, 2:34 AM EST | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 62 more | 86 min |
Nearby
Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in West Virginia, 2003Every mesoscale discussion in 2003
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.