Alert archive / Mississippi / Mesoscale Discussions in 2007
Mesoscale Discussion 1340
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2007, 2:09 PM CDT for Lamar County, Alabama; 8 counties in Arkansas; 23 counties in Mississippi. It was in force for 66 min.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2007, 2:09 PM CDT (19:09 UTC)
- Expired
- Jul 1, 2007, 3:15 PM CDT
- In force
- 66 min
- Issued by
- the Storm Prediction Center
All 32 counties
Lamar County, AL, Arkansas County, AR, Bradley County, AR, Chicot County, AR, Cleveland County, AR, Desha County, AR, Drew County, AR, Lincoln County, AR, Phillips County, AR, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Clay County, MS, Coahoma County, MS, Grenada County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Leflore County, MS, Monroe County, MS, Montgomery County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Union County, MS, Washington County, MS, Webster County, MS, Yalobusha County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 182 km from the middle of the area, began a volume at 19:10 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
Jackson, MS (KJAN), launched 12:00Z, 7.2 hours before the alert went out and 175 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
- 1115 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -3 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 |
|---|---|---|---|---|
| Jul 1, 11:12 AM CDT | Mesoscale Discussion | SPC | Blount, Calhoun, Chambers, Cherokee, Clay, Cleburne and 22 more | 2 hr |
| Jul 1, 12:10 PM CDT | Severe Thunderstorm Watch | SPC | Blount, Calhoun, Cherokee, Clay, Cleburne, Colbert and 16 more | 8 hr |
| Jul 1, 3:20 PM CDT | Mesoscale Discussion | SPC | Calhoun, Cherokee, Cleburne, DeKalb, Etowah, Randolph and 1 more | 55 min |
| Jul 1, 5:16 PM CDT | Mesoscale Discussion | SPC | Calhoun, Chambers, Cherokee, Clay, Cleburne, Etowah and 2 more | 119 min |
| Jul 1, 2:53 PM CDT | Mesoscale Discussion | SPC | Conway, Crawford, Faulkner, Franklin, Garland, Johnson and 9 more | 67 min |
Nearby
Mesoscale Discussions in Mississippi, 2007Mesoscale Discussions in Arkansas, 2007Mesoscale Discussions in Alabama, 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; radar from the NEXRAD Level II archive.