Alert archive / Tennessee / Mesoscale Discussions in 2004
Mesoscale Discussion 915
The Storm Prediction Center issued this mesoscale discussion at May 26, 2004, 3:50 PM EDT for Ashe County, Avery County, Watauga County, North Carolina; 39 counties in Tennessee. It was in force for 85 min.
The area
The outline as issued.
The facts
- Issued
- May 26, 2004, 3:50 PM EDT (19:50 UTC)
- Expired
- May 26, 2004, 5:15 PM EDT
- In force
- 85 min
- Issued by
- the Storm Prediction Center
All 42 counties
Ashe County, NC, Avery County, NC, Watauga County, NC, Anderson County, TN, Benton County, TN, Campbell County, TN, Carter County, TN, Cheatham County, TN, Claiborne County, TN, Clay County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Grainger County, TN, Greene County, TN, Hamblen County, TN, Hancock County, TN, Hawkins County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Jefferson County, TN, Johnson County, TN, Knox County, TN, Macon County, TN, Montgomery County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Scott County, TN, Smith County, TN, Stewart County, TN, Sullivan County, TN, Sumner County, TN, Trousdale County, TN, Unicoi County, TN, Union County, TN, Washington County, TN, Wilson County, TN
The radar
The Knoxville radar (KMRX), 94 km from the middle of the area, began a volume at 19:49 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.8 hours before the alert went out and 334 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
- 109 J/kg
- Mixed-layer CIN
- -308 J/kg
- Mixed-layer LCL
- 1090 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| May 26, 4:25 PM EDT | Severe Thunderstorm Watch | SPC | Ashe, Avery, Burke, Caldwell, McDowell, Madison and 3 more | 6 hr |
| May 26, 5:45 PM EDT | Severe Thunderstorm Watch | SPC | Caswell, Granville, Person, Rockingham, Stokes, Surry and 2 more | 5 hr |
| May 26, 5:57 PM EDT | Mesoscale Discussion | SPC | Alamance, Alexander, Anson, Cabarrus, Catawba, Chatham and 27 more | 63 min |
| May 26, 6:27 PM EDT | Mesoscale Discussion | SPC | Avery, Burke, McDowell, Madison, Mitchell, Watauga and 1 more | 93 min |
| May 26, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | Alamance, Alexander, Avery, Buncombe, Burke, Cabarrus and 37 more | 5 hr |
Nearby
Mesoscale Discussions in Tennessee, 2004Mesoscale Discussions in North Carolina, 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.