Alert archive / North Carolina / Mesoscale Discussions in 2004
Mesoscale Discussion 1531
The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2004, 8:40 PM EDT for 4 states. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Jul 5, 2004, 8:40 PM EDT (00:40 UTC)
- Expired
- Jul 5, 2004, 9:45 PM EDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
All 29 counties
Rabun County, GA, Alexander County, NC, Alleghany County, NC, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Transylvania County, NC, Watauga County, NC, Wilkes County, NC, Yancey County, NC, Cherokee County, SC, Greenville County, SC, Pickens County, SC, Spartanburg County, SC, Carter County, TN, Johnson County, TN, Unicoi County, TN
The radar
The Greer radar (KGSP), 84 km from the middle of the area, began a volume at 00:43 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
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.7 hours before the alert went out and 223 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
- 1205 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 1678 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
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 |
|---|---|---|---|---|
| Jul 6, 6:40 PM EDT | Severe Thunderstorm Watch | SPC | Cherokee | 5 hr |
| Jul 6, 12:01 PM EDT | Mesoscale Discussion | SPC | Lake, Obion | 59 min |
| Jul 6, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | Crockett, Dyer, Fayette, Gibson, Haywood, Lake and 6 more | 6 hr |
| Jul 6, 2:35 PM EDT | Mesoscale Discussion | SPC | Bedford, Benton, Cannon, Carroll, Cheatham, Chester and 43 more | 25 min |
| Jul 6, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 35 more | 6 hr |
| Jul 6, 3:34 PM EDT | Mesoscale Discussion | SPC | Benton, Carroll, Cheatham, Chester, Crockett, Davidson and 33 more | 56 min |
| Jul 6, 6:37 PM EDT | Mesoscale Discussion | SPC | Dyer, Lake, Obion | 53 min |
Nearby
Mesoscale Discussions in North Carolina, 2004Mesoscale Discussions in South Carolina, 2004Mesoscale Discussions in Tennessee, 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.