Alert archive / Alabama / Mesoscale Discussions in 2020
Mesoscale Discussion 985
The Storm Prediction Center issued this mesoscale discussion at Jun 24, 2020, 1:10 PM CDT for 17 counties in Alabama; 5 counties in Florida; 5 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 24, 2020, 1:10 PM CDT (18:10 UTC)
- Expired
- Jun 24, 2020, 3:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch possible
- Chance of a watch
- 60%
All 27 counties
Baldwin County, AL, Butler County, AL, Clarke County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Lowndes County, AL, Mobile County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Washington County, AL, Wilcox County, AL, Escambia County, FL, Holmes County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, George County, MS, Greene County, MS, Jackson County, MS, Perry County, MS, Stone County, MS
The radar
The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 18:11 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
Slidell Radar S, LA (KSIL), launched 12:00Z, 6.2 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
- 1752 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 8.3
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 24, 1:36 PM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 18 more | 7 hr |
| Jun 24, 5:27 PM CDT | Mesoscale Discussion | SPC | Autauga, Barbour, Bullock, Butler, Chambers, Coffee and 14 more | 93 min |
| Jun 24, 6:08 AM CDT | Mesoscale Discussion | SPC | Amite, Covington, Forrest, Franklin, George, Greene and 17 more | 2 hr |
Nearby
Mesoscale Discussions in Alabama, 2020Mesoscale Discussions in Florida, 2020Mesoscale Discussions in Mississippi, 2020Every mesoscale discussion in 2020
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.