Alert archive / Kentucky / Mesoscale Discussions in 2006

Mesoscale Discussion 557

April 19, 20069 counties in Kentucky

The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2006, 3:43 AM CDT for 9 counties in Kentucky. It was in force for 92 min.

The area

The outline as issued.

The facts

Issued: Apr 19, 2006, 3:43 AM CDT (08:43 UTC)
Expired: Apr 19, 2006, 5:15 AM CDT
In force: 92 min
Issued by: the Storm Prediction Center

Counties Butler County, KY, Christian County, KY, Logan County, KY, McLean County, KY, Muhlenberg County, KY, Ohio County, KY, Simpson County, KY, Todd County, KY, Warren County, KY

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 207Apr 19, 4:10 AM CDT

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 8.7 hours before the alert went out and 355 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: 1825 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 64 m²/s²
0-3 km storm-relative helicity: 276 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 12:50 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bourbon, Boyle, Breckinridge, Bullitt, Carroll and 29 more	6 hr
Apr 19, 1:29 AM CDT	Tornado Watch	SPC	Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more	4 hr
Apr 19, 2:02 AM CDT	Mesoscale Discussion	SPC	Bell, Clay, Harlan, Knox, Laurel, McCreary and 2 more	118 min
Apr 19, 2:39 AM CDT	Severe Thunderstorm Watch	SPC	Bath, Bell, Breathitt, Clay, Estill, Harlan and 20 more	7 hr
Apr 19, 4:12 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Barren, Butler, Clinton, Cumberland and 12 more	4 hr
Apr 19, 6:28 AM CDT	Mesoscale Discussion	SPC	Bell, Clay, Clinton, Harlan, Jackson, Knott and 12 more	62 min

Nearby

Mesoscale Discussions in Kentucky, 2006 Every mesoscale discussion in 2006

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.