Alert archive / Tennessee / Mesoscale Discussions in 2004
Mesoscale Discussion 209
The Storm Prediction Center issued this mesoscale discussion at Mar 20, 2004, 5:10 PM CST for 5 counties in Arkansas; 4 counties in Kentucky; 43 counties in Tennessee. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Mar 20, 2004, 5:10 PM CST (23:10 UTC)
- Expired
- Mar 20, 2004, 6:15 PM CST
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 52 counties
Crittenden County, AR, Cross County, AR, Mississippi County, AR, Poinsett County, AR, St. Francis County, AR, Allen County, KY, Cumberland County, KY, Monroe County, KY, Simpson County, KY, Bedford County, TN, Benton County, TN, Cannon County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Clay County, TN, Coffee County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Gibson County, TN, Haywood County, TN, Henderson County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lauderdale County, TN, Lewis County, TN, Macon County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Overton County, TN, Perry County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Shelby County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 11.2 hours before the alert went out and 150 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1720 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 11:50 AM CST | Severe Thunderstorm Watch | SPC | Craighead, Crittenden, Cross, Greene, Lawrence, Lee and 3 more | 6 hr |
| Mar 20, 2:09 PM CST | Mesoscale Discussion | SPC | Craighead, Mississippi | 66 min |
| Mar 20, 3:38 PM CST | Mesoscale Discussion | SPC | Arkansas, Clark, Cleburne, Conway, Crawford, Dallas and 28 more | 2 hr |
| Mar 20, 5:05 PM CST | Mesoscale Discussion | SPC | Clark, Conway, Faulkner, Garland, Hempstead, Hot Spring and 11 more | 85 min |
| Mar 20, 9:20 AM CST | Mesoscale Discussion | SPC | Ballard, Breckinridge, Caldwell, Carlisle, Crittenden, Daviess and 14 more | 85 min |
Nearby
Mesoscale Discussions in Tennessee, 2004Mesoscale Discussions in Arkansas, 2004Mesoscale Discussions in Kentucky, 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.