Alert archive / Alabama / Mesoscale Discussions in 2019
Mesoscale Discussion 27
The Storm Prediction Center issued this mesoscale discussion at Jan 19, 2019, 9:08 AM CST for 13 counties in Alabama; 4 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 19, 2019, 9:08 AM CST (15:08 UTC)
- Expired
- Jan 19, 2019, 11:15 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
Counties Bibb County, AL, Choctaw County, AL, Clarke County, AL, Dallas County, AL, Greene County, AL, Hale County, AL, Marengo County, AL, Monroe County, AL, Perry County, AL, Sumter County, AL, Tuscaloosa County, AL, Washington County, AL, Wilcox County, AL, George County, MS, Greene County, MS, Perry County, MS, Wayne County, MS
The radar
The Mobile radar (KMOB), 151 km from the middle of the area, began a volume at 15:07 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 12:00Z, 3.1 hours before the alert went out and 170 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
- 15 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 531 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 313 m²/s²
- 0-3 km storm-relative helicity
- 340 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Jan 19, 9:43 AM CST | Tornado Watch | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 25 more | 7 hr |
| Jan 19, 11:37 AM CST | Mesoscale Discussion | SPC | Autauga, Baldwin, Bibb, Butler, Chilton, Choctaw and 19 more | 83 min |
| Jan 19, 3:21 PM CST | Tornado Watch | SPC | Barbour, Bullock, Chambers, Coffee, Dale, Geneva and 7 more | 6 hr |
| Jan 19, 5:38 PM CST | Mesoscale Discussion | SPC | Barbour, Bullock, Chambers, Coffee, Covington, Crenshaw and 10 more | 97 min |
| Jan 19, 1:24 AM CST | Mesoscale Discussion | SPC | Adams, Claiborne, Issaquena, Jefferson, Sharkey, Warren | 2 hr |
| Jan 19, 5:04 AM CST | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Clarke, Copiah, Covington and 28 more | 116 min |
| Jan 19, 5:23 AM CST | Tornado Watch | SPC | Adams, Amite, Attala, Choctaw, Claiborne, Clarke and 36 more | 8 hr |
Nearby
Mesoscale Discussions in Alabama, 2019Mesoscale Discussions in Mississippi, 2019Every mesoscale discussion in 2019
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.