Alert archive / Kentucky / Mesoscale Discussions in 2003

Mesoscale Discussion 296

March 19, 200326 counties in Kentucky; 4 counties in Ohio

The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2003, 8:16 PM EST for 26 counties in Kentucky; 4 counties in Ohio. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Mar 19, 2003, 8:16 PM EST (01:16 UTC)
Expired: Mar 19, 2003, 9:45 PM EST
In force: 89 min
Issued by: the Storm Prediction Center

All 30 counties

Bath County, KY, Bourbon County, KY, Bracken County, KY, Carter County, KY, Clark County, KY, Elliott County, KY, Estill County, KY, Fayette County, KY, Fleming County, KY, Greenup County, KY, Harrison County, KY, Jessamine County, KY, Lee County, KY, Lewis County, KY, Madison County, KY, Mason County, KY, Menifee County, KY, Montgomery County, KY, Morgan County, KY, Nicholas County, KY, Pendleton County, KY, Powell County, KY, Robertson County, KY, Rowan County, KY, Scott County, KY, Wolfe County, KY, Adams County, OH, Brown County, OH, Clermont County, OH, Scioto County, OH

The radar

The Jackson,KY radar (KJKL), 83 km from the middle of the area, began a volume at 01:18 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, 1.3 hours before the alert went out and 137 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 8 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 763 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: 159 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

758 
ACUS11 KWNS 200116
SWOMCD
SPC MCD 200116 
OHZ000-KYZ000-200245-

MESOSCALE DISCUSSION 0296
NWS STORM PREDICTION CENTER NORMAN OK
0716 PM CST WED MAR 19 2003

AREAS AFFECTED...NERN KY/SRN OH

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 200116Z - 200245Z

ISOLATED BOW ECHOES WILL MOVE NWD ACROSS NERN KY WITH THE
POTENTIAL FOR DAMAGING WIND GUSTS AND HAIL. ACTIVITY SHOULD BE
TOO ISOLATED FOR A WEATHER WATCH AT THIS TIME.



EXIT REGION OF NARROW MID-LEVEL JET WAS PUNCHING FROM THE S INTO
NERN KY. THIS WAS CREATING STRONG DEEP LAYER SHEAR PROFILES WITH
65-70 KNOTS AT 500 MB. THE SHEAR COUPLED WITH A MARGINALLY
UNSTABLE AIR MASS WILL BE FAVORABLE FOR ISOLATED SMALL BOW ECHOES
WITH THE POTENTIAL FOR A FEW DAMAGING WIND GUSTS AND SMALL HAIL.
ACTIVITY SHOULD REMAIN TOO ISOLATED FOR A WW AT THIS TIME.

..BROYLES.. 03/20/2003

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...RLX...JKL...ILN...LMK...

37578423 37868477 38308464 38618454 39148408 39188325
38758275 38368284 37918320 37538366 37578421

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	Adair, Allen, Anderson, Barren, Boyle, Breckinridge and 58 more	3 hr
Mar 20, 1:45 PM EST	Severe Thunderstorm Watch	SPC	Allen, Ballard, Butler, Caldwell, Calloway, Christian and 20 more	6 hr
Mar 20, 2:05 PM EST	Severe Thunderstorm Watch	SPC	Boone, Campbell, Kenton	6 hr
Mar 20, 2:20 PM EST	Severe Thunderstorm Watch	SPC	Adair, Anderson, Barren, Bell, Bourbon, Boyle and 48 more	6 hr
Mar 20, 3:41 PM EST	Mesoscale Discussion	SPC	Adair, Anderson, Barren, Bath, Boone, Bourbon and 62 more	2 hr
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, 2003 Mesoscale Discussions in Ohio, 2003 Every 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.