Alert archive / Kentucky / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 135

April 30, 2004Crawford County, Lawrence County, Illinois; 18 counties in Indiana; 22 counties in Kentucky

The Storm Prediction Center issued this severe thunderstorm watch at Apr 30, 2004, 5:50 PM CDT for Crawford County, Lawrence County, Illinois; 18 counties in Indiana; 22 counties in Kentucky. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Apr 30, 2004, 5:50 PM CDT (22:50 UTC)
Expired: Apr 30, 2004, 9:00 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 42 counties

Crawford County, IL, Lawrence County, IL, Crawford County, IN, Daviess County, IN, Dubois County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Barren County, KY, Breckinridge County, KY, Butler County, KY, Christian County, KY, Daviess County, KY, Edmonson County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Hart County, KY, Henderson County, KY, Hopkins County, KY, Logan County, KY, McLean County, KY, Meade County, KY, Monroe County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Warren County, KY

Warnings issued inside it

4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Apr 30, 5:55 PM CDT	Severe Thunderstorm Warning	ILX	Crawford, Jasper, Lawrence	65 min
Apr 30, 6:25 PM CDT	Severe Thunderstorm Warning	PAH	Pike, Spencer, Warrick	65 min
Apr 30, 7:18 PM CDT	Flash Flood Warning	PAH	Spencer	117 min
Apr 30, 7:28 PM CDT	Severe Thunderstorm Warning	LMK	Perry	32 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

Mesoscale Discussion 524Apr 30, 7:59 PM CDT

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 10.8 hours before the alert went out and 221 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: 11 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 10:59 AM CDT	Mesoscale Discussion	SPC	Adams, Alexander, Bond, Brown, Calhoun, Cass and 54 more	2 hr
Apr 30, 1:52 PM CDT	Mesoscale Discussion	SPC	Alexander, Clinton, Franklin, Gallatin, Hamilton, Hardin and 15 more	113 min

Nearby

Severe Thunderstorm Watches in Kentucky, 2004 Severe Thunderstorm Watches in Indiana, 2004 Severe Thunderstorm Watches in Illinois, 2004 Every severe thunderstorm watch 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.