Alert archive / Mississippi / Mesoscale Discussions in 2023
Mesoscale Discussion 985
The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2023, 7:42 PM CDT for 29 counties in Mississippi. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2023, 7:42 PM CDT (00:42 UTC)
- Expired
- Jun 11, 2023, 9:15 PM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 270
All 29 counties
Attala County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS
The radar
The Jackson/Brandon,MS radar (KDGX), 72 km from the middle of the area, began a volume at 00:46 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
Birmingham, AL (KBMX), launched 00:00Z, 0.7 hours before the alert went out and 287 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
- 2168 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1466 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 5.6
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 11, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Carroll, Choctaw, Clay, Hinds, Holmes and 22 more | 5 hr |
| Jun 12, 1:11 PM CDT | Severe Thunderstorm Watch | SPC | George, Greene, Perry, Stone, Wayne | 7 hr |
| Jun 12, 1:33 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Franklin, Jefferson, Lincoln, Pike and 2 more | 57 min |
| Jun 12, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Amite, Claiborne, Clarke, Copiah, Covington and 22 more | 6 hr |
| Jun 12, 3:43 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Covington, Forrest and 14 more | 62 min |
| Jun 12, 6:10 PM CDT | Mesoscale Discussion | SPC | Amite, Forrest, George, Greene, Hancock, Harrison and 11 more | 95 min |
Nearby
Mesoscale Discussions in Mississippi, 2023Every mesoscale discussion in 2023
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.