Alert archive / Tennessee / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 268
The Storm Prediction Center issued this severe thunderstorm watch at May 9, 2002, 11:30 AM EDT for 22 counties in North Carolina; 4 counties in South Carolina; 38 counties in Tennessee. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 9, 2002, 11:30 AM EDT (15:30 UTC)
- Expired
- May 9, 2002, 5:00 PM EDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 64 counties
Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Cherokee County, NC, Clay County, NC, Cleveland 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, Watauga County, NC, Yancey County, NC, Cherokee County, SC, Greenville County, SC, Pickens County, SC, Spartanburg County, SC, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Carter County, TN, Claiborne County, TN, Clay County, TN, Cocke County, TN, Cumberland County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hamilton County, TN, Hawkins County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Morgan County, TN, Overton County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Unicoi County, TN, Union County, TN, Van Buren County, TN, Washington County, TN, White County, TN
The radar
The Knoxville radar (KMRX), 57 km from the middle of the area, began a volume at 15:33 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, 3.5 hours before the alert went out and 243 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
- 948 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 774 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 206 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.1
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 9, 6:15 PM EDT | Severe Thunderstorm Watch | SPC | Caswell, Forsyth, Granville, Person, Rockingham, Stokes and 3 more | 5 hr |
| May 9, 7:00 PM EDT | Severe Thunderstorm Watch | SPC | Cabarrus, Catawba, Cleveland, Davidson, Gaston, Iredell and 7 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Tennessee, 2002Severe Thunderstorm Watches in North Carolina, 2002Severe Thunderstorm Watches in South Carolina, 2002Every severe thunderstorm watch in 2002
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.