Alert archive / Indiana / Mesoscale Discussions in 2005

Mesoscale Discussion 920

May 19, 200518 counties in Indiana; 5 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at May 19, 2005, 6:29 PM EST for 18 counties in Indiana; 5 counties in Kentucky. It was in force for 91 min.

The area

The outline as issued.

The facts

Issued: May 19, 2005, 6:29 PM EST (23:29 UTC)
Expired: May 19, 2005, 8:00 PM EST
In force: 91 min
Issued by: the Storm Prediction Center

All 23 counties

Bartholomew County, IN, Brown County, IN, Clay County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Greene County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Ohio County, IN, Owen County, IN, Ripley County, IN, Scott County, IN, Switzerland County, IN, Boone County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Trimble County, KY

The radar

The Indianapolis radar (KIND), 89 km from the middle of the area, began a volume at 23:29 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.

Severe Thunderstorm Watch 295May 19, 8:50 PM EST

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.5 hours before the alert went out and 211 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1850 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 183 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.

000 
ACUS11 KWNS 192329
SWOMCD
SPC MCD 192329 
KYZ000-INZ000-200100-

MESOSCALE DISCUSSION 0920
NWS STORM PREDICTION CENTER NORMAN OK
0629 PM CDT THU MAY 19 2005

AREAS AFFECTED...EXTREME SRN INDIANA INTO N CENTRAL KY S OF THE
LUK/CVG AREA

CONCERNING...TORNADO WATCH 291...

VALID 192329Z - 200100Z

LINE OF STRONG/SEVERE THUNDERSTORMS ARE TRAINING ALONG
QUASISTATIONARY BOUNDARY THAT EXTENDS ALONG OHIO RIVER BASIN AT THIS
TIME.  DEEP LAYER SHEAR IS POISED OVER THE AREA WITH 30-35 KT WSWLY
LOW LEVEL FLOW UNDERNEATH NNWLY 90-110 KT UPPER LEVEL FLOW.  AREA
THAT MAY STILL PRODUCE AN ISOLATED TORNADO ARE ASSOCIATED WITH
STORMS MOVING THROUGH CARROLL...OWEN AND GRANT COUNTIES IN KY...THEN
SWD IN MORE UNSTABLE AIR MASS.

ACTIVITY IS EXPECTED TO MIGRATE SLOWLY SWD PRODUCING LARGE HAIL AND
LOCALLY HEAVY RAIN.  CONTINUED CELL MERGERS WILL ALSO CONTINUE NEXT
FEW HOURS UNDERNEATH STRONG UPPER DIVERGENCE ENHANCING UVVS NEAR THE
BOUNDARY.

..MCCARTHY.. 05/19/2005

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

ATTN...WFO...ILN...LMK...IND...

38708738 39228740 39418737 39488665 39388582 39238508
38938463 38568444 38508491 38538538 38618613 38668739

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 19, 6:58 AM EST	Mesoscale Discussion	SPC	Clay, Daviess, Dubois, Gibson, Greene, Knox and 7 more	92 min
May 19, 10:44 AM EST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Clay, Crawford, Daviess and 36 more	3 hr
May 19, 11:15 AM EST	Severe Thunderstorm Watch	SPC	Gibson, Posey	8 hr
May 19, 12:50 PM EST	Severe Thunderstorm Watch	SPC	Clark, Crawford, Dubois, Floyd, Harrison, Perry and 4 more	8 hr
May 19, 1:15 PM EST	Mesoscale Discussion	SPC	Bartholomew, Benton, Boone, Brown, Clay, Clinton and 38 more	2 hr
May 19, 2:00 PM EST	Tornado Watch	SPC	Bartholomew, Boone, Brown, Clay, Daviess, Decatur and 26 more	7 hr
May 19, 3:26 PM EST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clay, Decatur, Fayette, Franklin and 17 more	94 min
May 19, 3:41 PM EST	Mesoscale Discussion	SPC	Crawford, Dubois, Floyd, Harrison, Perry, Pike and 3 more	64 min
May 19, 3:50 PM EST	Mesoscale Discussion	SPC	Benton, Carroll, Cass, Fulton, Howard, Jasper and 9 more	85 min
May 19, 4:50 PM EST	Severe Thunderstorm Watch	SPC	Benton, Boone, Carroll, Cass, Clinton, Fountain and 18 more	4 hr
May 19, 5:59 PM EST	Mesoscale Discussion	SPC	Gibson	91 min
May 19, 6:13 PM EST	Mesoscale Discussion	SPC	Crawford, Dubois, Floyd, Harrison, Perry, Spencer and 2 more	2 hr
May 19, 6:20 PM EST	Severe Thunderstorm Watch	SPC	Posey	6 hr
May 19, 6:30 PM EST	Mesoscale Discussion	SPC	Benton, Carroll, Cass, Fulton, Howard, Jasper and 9 more	90 min
May 19, 3:55 PM EST	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Bourbon and 51 more	7 hr

Nearby

Mesoscale Discussions in Indiana, 2005 Mesoscale Discussions in Kentucky, 2005 Every mesoscale discussion in 2005

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.