Alert archive / Tennessee / Mesoscale Discussions in 2004

Mesoscale Discussion 1665

July 14, 20047 states

The Storm Prediction Center issued this mesoscale discussion at Jul 14, 2004, 12:03 PM CDT for 7 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued
Jul 14, 2004, 12:03 PM CDT (17:03 UTC)
Expired
Jul 14, 2004, 2:00 PM CDT
In force
117 min
Issued by
the Storm Prediction Center
All 141 counties

Colbert County, AL, DeKalb County, AL, Jackson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Fannin County, GA, Floyd County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Towns County, GA, Union County, GA, Walker County, GA, Whitfield County, GA, Allen County, KY, Bell County, KY, Calloway County, KY, Clinton County, KY, Cumberland County, KY, Graves County, KY, Harlan County, KY, Hickman County, KY, Knox County, KY, Leslie County, KY, Letcher County, KY, Marshall County, KY, McCreary County, KY, Monroe County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Wayne County, KY, Whitley County, KY, Alcorn County, MS, Benton County, MS, Tippah County, MS, Tishomingo County, MS, Cherokee County, NC, Clay County, NC, Graham County, NC, Macon County, NC, Swain County, NC, Anderson County, TN, Bedford County, TN, Benton County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Coffee County, TN, Crockett County, TN, Cumberland County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Fentress County, TN, Franklin County, TN, Gibson County, TN, Giles County, TN, Grainger County, TN, Greene County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hardeman County, TN, Hardin County, TN, Hawkins County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Jefferson County, TN, Knox County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Madison County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, McNairy County, TN, Meigs County, TN, Monroe County, TN, Montgomery County, TN, Moore County, TN, Morgan County, TN, Obion County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Robertson County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Washington County, TN, Wayne County, TN, Weakley County, TN, White County, TN, Williamson County, TN, Wilson County, TN, City of Norton, VA, Lee County, VA, Scott County, VA, Wise County, VA

The radar

The Nashville radar (KOHX), 63 km from the middle of the area, began a volume at 17:04 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, 5.1 hours before the alert went out and 59 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 2004-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1898 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 2004-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 square meters per square second.19395878Sfc1 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
1898 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
1040 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
211 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.3

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
Jul 13, 8:20 PM CDTSevere Thunderstorm WatchSPCDeKalb, Jackson, Madison6 hr
Jul 13, 10:21 PM CDTMesoscale DiscussionSPCBlount, Cherokee, Cullman, DeKalb, Etowah, Jackson and 5 more114 min
Jul 14, 1:45 PM CDTSevere Thunderstorm WatchSPCColbert, DeKalb, Jackson, Lauderdale, Lawrence, Limestone and 2 more5 hr
Jul 14, 3:15 PM CDTSevere Thunderstorm WatchSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 32 more6 hr
Jul 14, 3:44 PM CDTMesoscale DiscussionSPCColbert, DeKalb, Jackson, Lauderdale, Lawrence, Limestone and 2 more91 min
Jul 14, 6:23 PM CDTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 32 more97 min
Jul 14, 9:40 AM CDTSevere Thunderstorm WatchSPCColumbia, Elbert, Franklin, Habersham, Hart, Lincoln and 4 more6 hr
Jul 13, 7:36 PM CDTMesoscale DiscussionSPCAdair, Allen, Anderson, Barren, Bath, Bell and 66 more114 min
Jul 13, 11:13 PM CDTMesoscale DiscussionSPCAllen, Ballard, Barren, Butler, Caldwell, Calloway and 26 more2 hr
Jul 14, 5:17 AM CDTMesoscale DiscussionSPCAllen, Barren, Clinton, Cumberland, Edmonson, Metcalfe and 3 more58 min
Jul 14, 7:35 AM CDTMesoscale DiscussionSPCAvery, Buncombe, Burke, Cleveland, Graham, Haywood and 11 more85 min
Jul 14, 11:18 AM CDTMesoscale DiscussionSPCAlleghany, Caswell, Rockingham, Stokes, Surry117 min
Jul 14, 5:10 PM CDTMesoscale DiscussionSPCBertie, Camden, Chowan, Edgecombe, Franklin, Gates and 11 more65 min
Jul 14, 6:00 PM CDTSevere Thunderstorm WatchSPCAlamance, Bertie, Camden, Chatham, Chowan, Currituck and 22 more5 hr
Jul 14, 11:50 AM CDTTornado WatchSPCAccomack, Albemarle, Amelia, Appomattox, Arlington, Brunswick and 76 more6 hr
Jul 14, 2:05 PM CDTMesoscale DiscussionSPCAccomack, Albemarle, Amelia, Appomattox, Arlington, Brunswick and 76 more115 min

Nearby

Mesoscale Discussions in Tennessee, 2004Mesoscale Discussions in Kentucky, 2004Mesoscale Discussions in Georgia, 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; radar from the NEXRAD Level II archive.