Alert archive / Kentucky / Mesoscale Discussions in 2008

Mesoscale Discussion 470

March 19, 200824 counties in Kentucky; 23 counties in Tennessee

The Storm Prediction Center issued this mesoscale discussion at Mar 19, 2008, 1:13 AM CDT for 24 counties in Kentucky; 23 counties in Tennessee. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued
Mar 19, 2008, 1:13 AM CDT (06:13 UTC)
Expired
Mar 19, 2008, 2:15 AM CDT
In force
62 min
Issued by
the Storm Prediction Center
All 47 counties

Allen County, KY, Barren County, KY, Bullitt County, KY, Butler County, KY, Calloway County, KY, Christian County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hardin County, KY, Hart County, KY, Larue County, KY, Logan County, KY, Marion County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Ohio County, KY, Simpson County, KY, Taylor County, KY, Todd County, KY, Trigg County, KY, Warren County, KY, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Fayette County, TN, Hardeman County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Macon County, TN, Madison County, TN, Montgomery County, TN, Perry County, TN, Robertson County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Weakley County, TN

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 6.2 hours before the alert went out and 81 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 00:00Z on 2008-03-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 00:00Z on 2008-03-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 441 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1107 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
441 m²/s²
0-3 km storm-relative helicity
675 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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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 18, 8:43 PM CDTMesoscale DiscussionSPCCaldwell, Calloway, Christian, Fulton, Graves, Hickman and 3 more92 min
Mar 19, 1:32 PM CDTMesoscale DiscussionSPCBell, Breathitt, Clay, Floyd, Harlan, Jackson and 19 more58 min
Mar 19, 2:03 PM CDTTornado WatchSPCBell, Breathitt, Clay, Estill, Floyd, Harlan and 19 more5 hr
Mar 19, 3:54 PM CDTMesoscale DiscussionSPCBell, Boyd, Breathitt, Clay, Elliott, Floyd and 14 more66 min
Mar 18, 10:51 PM CDTTornado WatchSPCChester, Decatur, Hardeman, Hardin, Henderson, McNairy8 hr
Mar 18, 11:42 PM CDTMesoscale DiscussionSPCCarroll, Crockett, Fayette, Gibson, Hardeman, Haywood and 6 more63 min
Mar 19, 4:55 AM CDTMesoscale DiscussionSPCGiles2 hr
Mar 19, 7:08 AM CDTMesoscale DiscussionSPCBedford, Franklin, Giles, Hardin, Lawrence, Lewis and 7 more2 hr
Mar 19, 4:43 PM CDTSevere Thunderstorm WatchSPCBlount, Carter, Cocke, Greene, Hamblen, Hawkins and 8 more4 hr
Mar 19, 6:19 PM CDTMesoscale DiscussionSPCBlount, Carter, Cocke, Greene, Hamblen, Hawkins and 8 more86 min

Nearby

Mesoscale Discussions in Kentucky, 2008Mesoscale Discussions in Tennessee, 2008Every mesoscale discussion in 2008

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.