Alert archive / Kentucky / Mesoscale Discussions in 2007

Mesoscale Discussion 595

April 26, 2007Clark County, Floyd County, Indiana; 52 counties in Kentucky; 24 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Apr 26, 2007, 3:07 PM EDT for Clark County, Floyd County, Indiana; 52 counties in Kentucky; 24 counties in Tennessee. It was in force for 53 min.

The area

The outline as issued.

The facts

Issued
Apr 26, 2007, 3:07 PM EDT (19:07 UTC)
Expired
Apr 26, 2007, 4:00 PM EDT
In force
53 min
Issued by
the Storm Prediction Center
All 78 counties

Clark County, IN, Floyd County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bath County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Estill County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Hart County, KY, Henry County, KY, Jackson County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Madison County, KY, Marion County, KY, McCreary County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Montgomery County, KY, Nelson County, KY, Nicholas County, KY, Oldham County, KY, Owen County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Warren County, KY, Washington County, KY, Wayne County, KY, Woodford County, KY, Bledsoe County, TN, Cannon County, TN, Clay County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Jackson County, TN, Macon County, TN, Meigs County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rhea County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Wilson County, TN

The radar

The Louisville radar (KLVX), 101 km from the middle of the area, began a volume at 19:07 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.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 7.1 hours before the alert went out and 185 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, Nashville Metro, TN at 12:00Z on 2007-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 159 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, Nashville Metro, TN at 12:00Z on 2007-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 square meters per square second.1939587897117Sfc1 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
159 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
746 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
184 m²/s²
0-3 km storm-relative helicity
244 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.7

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.

IssuedProductOfficeCountiesLasted
Apr 26, 1:51 PM EDTMesoscale DiscussionSPCAdams, Allen, Blackford, DeKalb, Delaware, Elkhart and 22 more54 min
Apr 26, 2:26 PM EDTTornado WatchSPCAdams, Allen, Blackford, Dearborn, DeKalb, Elkhart and 24 more8 hr
Apr 26, 4:18 PM EDTTornado WatchSPCClark, Floyd, Jefferson, Scott7 hr
Apr 26, 5:55 PM EDTMesoscale DiscussionSPCBartholomew, Benton, Boone, Brown, Carroll, Cass and 36 more95 min
Apr 26, 6:42 PM EDTMesoscale DiscussionSPCAdams, Allen, Blackford, Carroll, Cass, Clinton and 31 more93 min
Apr 26, 7:57 PM EDTMesoscale DiscussionSPCBath, Bell, Breathitt, Carter, Clark, Clay and 29 more93 min
Apr 26, 5:33 PM EDTMesoscale DiscussionSPCBradley, Franklin, Hamilton, Marion, Polk57 min
Apr 26, 5:53 PM EDTTornado WatchSPCBradley, Franklin, Hamilton, Marion, Polk5 hr

Nearby

Mesoscale Discussions in Kentucky, 2007Mesoscale Discussions in Tennessee, 2007Mesoscale Discussions in Indiana, 2007Every mesoscale discussion in 2007

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.