Alert archive / Kentucky / Mesoscale Discussions in 2003
Mesoscale Discussion 310
The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2003, 3:41 PM EST for 64 counties in Indiana; 68 counties in Kentucky; 18 counties in Ohio. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 20, 2003, 3:41 PM EST (20:41 UTC)
- Expired
- Mar 20, 2003, 5:45 PM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 150 counties
Adams County, IN, Allen County, IN, Bartholomew County, IN, Blackford County, IN, Boone County, IN, Brown County, IN, Carroll County, IN, Cass County, IN, Clark County, IN, Clay County, IN, Clinton County, IN, Crawford County, IN, Dearborn County, IN, Decatur County, IN, Delaware County, IN, Dubois County, IN, Fayette County, IN, Floyd County, IN, Franklin County, IN, Fulton County, IN, Grant County, IN, Greene County, IN, Hamilton County, IN, Hancock County, IN, Harrison County, IN, Hendricks County, IN, Henry County, IN, Howard County, IN, Huntington County, IN, Jackson County, IN, Jay County, IN, Jefferson County, IN, Jennings County, IN, Johnson County, IN, Kosciusko County, IN, Lawrence County, IN, Madison County, IN, Marion County, IN, Martin County, IN, Miami County, IN, Monroe County, IN, Montgomery County, IN, Morgan County, IN, Ohio County, IN, Orange County, IN, Owen County, IN, Perry County, IN, Pulaski County, IN, Putnam County, IN, Randolph County, IN, Ripley County, IN, Rush County, IN, Scott County, IN, Shelby County, IN, Switzerland County, IN, Tippecanoe County, IN, Tipton County, IN, Union County, IN, Wabash County, IN, Washington County, IN, Wayne County, IN, Wells County, IN, White County, IN, Whitley County, IN, Adair County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Boone County, KY, Bourbon County, KY, Boyle County, KY, Bracken County, KY, Breckinridge County, KY, Bullitt County, KY, Campbell County, KY, Carroll County, KY, Casey County, KY, Clark County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson 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, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Kenton County, KY, Larue County, KY, Laurel County, KY, Lee County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, Mason County, KY, Meade County, KY, Menifee County, KY, Mercer County, KY, Metcalfe County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Owsley County, KY, Pendleton County, KY, Powell County, KY, Pulaski County, KY, Robertson County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY, Auglaize County, OH, Brown County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clermont County, OH, Clinton County, OH, Darke County, OH, Greene County, OH, Hamilton County, OH, Highland County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH, Van Wert County, OH, Warren County, OH
The radar
The Louisville radar (KLVX), 110 km from the middle of the area, began a volume at 20:45 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 12:00Z, 8.7 hours before the alert went out and 139 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
- 1227 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- -21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
431 ACUS11 KWNS 202042 SWOMCD SPC MCD 202041 KYZ000-OHZ000-INZ000-202245- MESOSCALE DISCUSSION 0310 NWS STORM PREDICTION CENTER NORMAN OK 0241 PM CST THU MAR 20 2003 AREAS AFFECTED...INDIANA...CENTRAL KY...SWRN OH CONCERNING...SEVERE THUNDERSTORM WATCH 68...69... VALID 202041Z - 202245Z LATEST SURFACE MAP SHOWS LARGE ZONE OF PRESSURE FALLS COVERING ALL OF IN...WRN OH...AND EXTENDING SWD INTO WRN TN AND NRN AL. PRONOUNCED DRYING OF THE BOUNDARY LAYER HAS OCCURRED OVER WRN TN AND EXTENDING NWD INTO WRN KY AND SRN IL...WITH DEWPOINTS FALLING INTO THE 40S AND 30S F. DEWPOINTS IN THE MID 50S REMAIN OVER SERN IN...SWRN OH...AND CENTRAL AND ERN KY...YIELDING MLCAPES ON THE ORDER OF 1000-1500 J/KG. LBX AND IND VWPS SHOW FAVORABLE SHEAR PROFILE FOR SUPERCELLS...WITH SLIGHTLY LESS FAVORABLE PROFILES INTO CENTRAL OH. INCREASING WIND PROFILES...ALONG WITH CONTINUED LARGE SCALE ASCENT AND OBSERVED PRESSURE FALLS SUGGEST STORMS WILL CONTINUE TO INCREASE IN INTENSITY DURING THE AFTERNOON. AN ISOLATED TORNADO CANNOT BE RULED OUT...ESPECIALLY OVER CENTRAL AND SRN IN...SWRN OH...AND CENTRAL AND N-CENTRAL KY WHERE WIND PROFILES ARE MOST FAVORABLE WITHIN MOIST AXIS. ..JEWELL.. 03/20/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...JKL...ILN...LMK...IWX...IND...PAH...LOT... 37068376 36668498 36828635 37918693 39588714 40478726 41168682 41458508 40458394 39738351 38048353 37128367
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 1:23 PM EST | Mesoscale Discussion | SPC | Bartholomew, Brown, Clark, Crawford, Daviess, Dearborn and 25 more | 3 hr |
| Mar 20, 1:45 PM EST | Severe Thunderstorm Watch | SPC | Daviess, Dubois, Gibson, Knox, Perry, Pike and 4 more | 6 hr |
| Mar 20, 2:05 PM EST | Severe Thunderstorm Watch | SPC | Adams, Allen, Bartholomew, Blackford, Boone, Brown and 47 more | 6 hr |
| Mar 20, 2:20 PM EST | Severe Thunderstorm Watch | SPC | Clark, Floyd, Harrison, Washington | 6 hr |
| Mar 19, 8:16 PM EST | Mesoscale Discussion | SPC | Bath, Bourbon, Bracken, Carter, Clark, Elliott and 20 more | 89 min |
| Mar 20, 6:43 PM EST | Mesoscale Discussion | SPC | Boyd, Carter, Elliott, Floyd, Greenup, Johnson and 3 more | 2 hr |
Nearby
Mesoscale Discussions in Kentucky, 2003Mesoscale Discussions in Indiana, 2003Mesoscale Discussions in Ohio, 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.