Alert archive / Tennessee / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 865
The Storm Prediction Center issued this severe thunderstorm watch at Aug 17, 2003, 1:15 PM EDT for 7 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 17, 2003, 1:15 PM EDT (17:15 UTC)
- Expired
- Aug 17, 2003, 7:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 121 counties
Rabun County, GA, Towns County, GA, Perry County, IN, Adair County, KY, Allen County, KY, Barren County, KY, Bell County, KY, Boyle County, KY, Breckinridge County, KY, Butler County, KY, Casey County, KY, Clay County, KY, Clinton County, KY, Cumberland County, KY, Edmonson County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harlan County, KY, Hart County, KY, Jackson County, KY, Knox County, KY, Larue County, KY, Laurel County, KY, Leslie County, KY, Lincoln County, KY, Logan County, KY, Marion County, KY, McCreary County, KY, Meade County, KY, Metcalfe County, KY, Monroe County, KY, Ohio County, KY, Pulaski County, KY, Rockcastle County, KY, Russell County, KY, Simpson County, KY, Taylor County, KY, Warren County, KY, Wayne County, KY, Whitley County, KY, Avery County, NC, Buncombe County, NC, Cherokee County, NC, Clay County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC, Greenville County, SC, Laurens County, SC, Oconee County, SC, Pickens County, SC, Spartanburg County, SC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Campbell County, TN, Cannon County, TN, Carter County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Jackson County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Macon County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton 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, Sullivan County, TN, Sumner County, TN, Trousdale County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, Washington County, TN, White County, TN, Williamson County, TN, Wilson County, TN, City of Bristol, VA, City of Norton, VA, Lee County, VA, Scott County, VA, Washington County, VA, Wise County, VA
The radar
The Knoxville radar (KMRX), 143 km from the middle of the area, began a volume at 17:14 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.
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 2:23 PM EDT | Severe Thunderstorm Warning | MRX | Hawkins | 67 min |
| Aug 17, 2:58 PM EDT | Severe Thunderstorm Warning | MRX | Washington | 62 min |
| Aug 17, 3:04 PM EDT | Severe Thunderstorm Warning | MRX | Hancock | 41 min |
| Aug 17, 3:29 PM EDT | Severe Thunderstorm Warning | MRX | Hawkins | 61 min |
| Aug 17, 3:46 PM EDT | Severe Thunderstorm Warning | MRX | Hancock | 44 min |
| Aug 17, 5:17 PM EDT | Severe Thunderstorm Warning | MRX | Claiborne | 43 min |
| Aug 17, 5:22 PM EDT | Severe Thunderstorm Warning | MRX | Roane | 53 min |
| Aug 17, 5:37 PM EDT | Severe Thunderstorm Warning | MRX | Loudon | 38 min |
| Aug 17, 6:13 PM EDT | Severe Thunderstorm Warning | MRX | Loudon | 47 min |
| Aug 17, 6:22 PM EDT | Severe Thunderstorm Warning | MRX | Monroe | 68 min |
| Aug 17, 6:26 PM EDT | Severe Thunderstorm Warning | GSP | Spartanburg | 64 min |
| Aug 17, 6:48 PM EDT | Severe Thunderstorm Warning | GSP | Pickens | 57 min |
| Aug 17, 6:52 PM EDT | Severe Thunderstorm Warning | MRX | Campbell, Scott | 53 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 5.3 hours before the alert went out and 164 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
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 4:27 PM EDT | Mesoscale Discussion | SPC | Rabun | 2 hr |
| Aug 17, 6:16 PM EDT | Mesoscale Discussion | SPC | Rabun | 59 min |
| Aug 17, 2:48 PM EDT | Mesoscale Discussion | SPC | Gibson, Knox, Pike, Posey, Sullivan, Vanderburgh and 1 more | 117 min |
| Aug 17, 4:10 PM EDT | Severe Thunderstorm Watch | SPC | Clay, Daviess, Gibson, Greene, Knox, Pike and 6 more | 6 hr |
| Aug 17, 12:06 PM EDT | Mesoscale Discussion | SPC | Bell, Breathitt, Clay, Estill, Floyd, Harlan and 10 more | 114 min |
| Aug 17, 7:51 PM EDT | Mesoscale Discussion | SPC | Caldwell, Calloway, Carlisle, Christian, Crittenden, Fulton and 12 more | 54 min |
| Aug 17, 1:52 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Bertie, Cabarrus, Caswell and 40 more | 113 min |
| Aug 17, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Alleghany, Ashe, Burke, Cabarrus and 40 more | 6 hr |
| Aug 17, 6:25 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Alleghany, Anson, Ashe, Bertie and 54 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Tennessee, 2003Severe Thunderstorm Watches in Kentucky, 2003Severe Thunderstorm Watches in North Carolina, 2003Every severe thunderstorm watch 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.