Alert archive / Kentucky / Mesoscale Discussions in 2004

Mesoscale Discussion 758

May 19, 20044 counties in Illinois; 11 counties in Indiana; 16 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at May 19, 2004, 11:26 AM CDT for 4 counties in Illinois; 11 counties in Indiana; 16 counties in Kentucky. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 19, 2004, 11:26 AM CDT (16:26 UTC)
Expired
May 19, 2004, 1:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 31 counties

Gallatin County, IL, Hardin County, IL, Wabash County, IL, White County, IL, Crawford County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Harrison County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Daviess County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henderson County, KY, Hopkins County, KY, Jefferson County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Union County, KY, Webster County, KY

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.4 hours before the alert went out and 331 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2004-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2004-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
85 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
595 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
31 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.

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Nearby

Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in Indiana, 2004Mesoscale Discussions in Illinois, 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.