Alert archive / North Carolina / Mesoscale Discussions in 2007
Mesoscale Discussion 435
The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2007, 10:49 PM CDT for 5 states. It was in force for 56 min.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2007, 10:49 PM CDT (03:49 UTC)
- Expired
- Apr 3, 2007, 11:45 PM CDT
- In force
- 56 min
- Issued by
- the Storm Prediction Center
All 52 counties
Cullman County, AL, DeKalb County, AL, Jackson County, AL, Lawrence County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Fannin County, GA, Gilmer County, GA, Murray County, GA, Rabun County, GA, Towns County, GA, Union County, GA, Walker County, GA, Whitfield County, GA, Ashe County, NC, Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell 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, Watauga County, NC, Yancey County, NC, Bradley County, TN, Carter County, TN, Hamilton County, TN, Johnson County, TN, Marion County, TN, McMinn County, TN, Monroe County, TN, Polk County, TN, Grayson County, VA, Smyth County, VA, Tazewell County, VA, Washington County, VA, Wythe County, VA
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 00:00Z, 3.8 hours before the alert went out and 232 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
- 1678 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1714 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 10.5
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 |
|---|---|---|---|---|
| Apr 3, 8:03 PM CDT | Tornado Watch | SPC | Colbert, Cullman, DeKalb, Franklin, Jackson, Lauderdale and 5 more | 5 hr |
| Apr 3, 9:53 PM CDT | Severe Thunderstorm Watch | SPC | Blount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 12 more | 5 hr |
| Apr 4, 2:07 AM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Chambers, Chilton, Clay, Cleburne and 15 more | 113 min |
| Apr 3, 8:43 PM CDT | Severe Thunderstorm Watch | SPC | Rabun | 5 hr |
| Apr 3, 11:21 PM CDT | Severe Thunderstorm Watch | SPC | Banks, Barrow, Bartow, Carroll, Chattooga, Cherokee and 27 more | 3 hr |
| Apr 3, 9:14 PM CDT | Mesoscale Discussion | SPC | Fayette, Hardeman | 61 min |
Nearby
Mesoscale Discussions in North Carolina, 2007Mesoscale Discussions in Georgia, 2007Mesoscale Discussions in Tennessee, 2007Every mesoscale discussion in 2007
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.