Alert archive / Alabama / Mesoscale Discussions in 2018
Mesoscale Discussion 1612
The Storm Prediction Center issued this mesoscale discussion at Nov 1, 2018, 7:50 AM CDT for 28 counties in Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It was in force for 115 min.
The area
The outline as issued.
The facts
- Issued
- Nov 1, 2018, 7:50 AM CDT (12:50 UTC)
- Expired
- Nov 1, 2018, 9:45 AM CDT
- In force
- 115 min
- Issued by
- the Storm Prediction Center
All 31 counties
Autauga County, AL, Baldwin County, AL, Bibb County, AL, Butler County, AL, Chilton County, AL, Clarke County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dallas County, AL, Elmore County, AL, Escambia County, AL, Fayette County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lawrence County, AL, Lowndes County, AL, Marengo County, AL, Monroe County, AL, Montgomery County, AL, Perry County, AL, Shelby County, AL, Tuscaloosa County, AL, Walker County, AL, Wilcox County, AL, Winston County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL
The radar
The Birmingham radar (KBMX), 111 km from the middle of the area, began a volume at 12:48 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 12:00Z, 0.8 hours before the alert went out and 111 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
- 13 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 659 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 367 m²/s²
- 0-3 km storm-relative helicity
- 379 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Nov 1, 4:30 AM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 23 more | 2 hr |
| Nov 1, 5:27 AM CDT | Tornado Watch | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 32 more | 7 hr |
| Nov 1, 8:43 AM CDT | Mesoscale Discussion | SPC | Coffee, Dale, Geneva, Henry, Houston | 2 hr |
| Nov 1, 9:40 AM CDT | Severe Thunderstorm Watch | SPC | Barbour, Bullock, Coffee, Dale, Geneva, Henry and 3 more | 4 hr |
| Nov 1, 12:03 PM CDT | Mesoscale Discussion | SPC | Chambers, Cherokee, Cleburne, DeKalb, Henry, Houston and 3 more | 117 min |
Nearby
Mesoscale Discussions in Alabama, 2018Mesoscale Discussions in Florida, 2018Every mesoscale discussion in 2018
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.