Alert archive / Alabama / Mesoscale Discussions in 2013
Mesoscale Discussion 313
The Storm Prediction Center issued this mesoscale discussion at Mar 24, 2013, 3:12 AM CDT for 21 counties in Alabama; 4 counties in Mississippi. It was in force for 93 min.
The area
The outline as issued.
The facts
- Issued
- Mar 24, 2013, 3:12 AM CDT (08:12 UTC)
- Expired
- Mar 24, 2013, 4:45 AM CDT
- In force
- 93 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 25 counties
Autauga County, AL, Bullock County, AL, Butler County, AL, Chilton County, AL, Choctaw County, AL, Clarke County, AL, Conecuh County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Hale County, AL, Lowndes County, AL, Macon County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Pike County, AL, Sumter County, AL, Washington County, AL, Wilcox County, AL, Clarke County, MS, Jasper County, MS, Jones County, MS, Wayne County, MS
The radar
The Birmingham radar (KBMX), 125 km from the middle of the area, began a volume at 08:15 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
Birmingham, AL (KBMX), launched 00:00Z, 8.2 hours before the alert went out and 125 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 528 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 184 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 |
|---|---|---|---|---|
| Mar 23, 9:29 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Bullock, Calhoun, Chambers and 30 more | 61 min |
| Mar 23, 10:28 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Chambers, Chilton, Clay, Coosa and 11 more | 92 min |
| Mar 24, 3:12 AM CDT | Mesoscale Discussion | SPC | Houston | 93 min |
| Mar 24, 3:42 AM CDT | Tornado Watch | SPC | Henry, Houston | 6 hr |
| Mar 24, 5:55 AM CDT | Mesoscale Discussion | SPC | Russell | 65 min |
Nearby
Mesoscale Discussions in Alabama, 2013Mesoscale Discussions in Mississippi, 2013Every mesoscale discussion in 2013
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.