Alert archive / Tennessee / Mesoscale Discussions in 2003
Mesoscale Discussion 2177
The Storm Prediction Center issued this mesoscale discussion at Aug 17, 2003, 6:51 PM CDT for 18 counties in Kentucky; 29 counties in Tennessee. It was in force for 54 min.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2003, 6:51 PM CDT (23:51 UTC)
- Expired
- Aug 17, 2003, 7:45 PM CDT
- In force
- 54 min
- Issued by
- the Storm Prediction Center
All 47 counties
Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Webster County, KY, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Perry County, TN, Stewart County, TN, Wayne County, TN, Weakley County, TN
The radar
The Paducah radar (KPAH), 94 km from the middle of the area, began a volume at 23:53 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 nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 11.9 hours before the alert went out and 154 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
- 1443 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 898 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 |
|---|---|---|---|---|
| Aug 17, 11:06 AM CDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Estill, Floyd, Harlan and 10 more | 114 min |
| Aug 17, 12:15 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Allen, Barren, Bell, Boyle, Breckinridge and 33 more | 6 hr |
| Aug 17, 1:48 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Carlisle, Crittenden, Graves, Henderson and 9 more | 117 min |
| Aug 17, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more | 6 hr |
| Aug 17, 3:27 PM CDT | Mesoscale Discussion | SPC | Adair, Allen, Barren, Bell, Boyle, Breckinridge and 37 more | 2 hr |
| Aug 17, 5:16 PM CDT | Mesoscale Discussion | SPC | Bell, Clay, Harlan, Jackson, Knox, Laurel and 9 more | 59 min |
Nearby
Mesoscale Discussions in Tennessee, 2003Mesoscale Discussions in Kentucky, 2003Every mesoscale discussion in 2003
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.