Alert archive / Alabama / Mesoscale Discussions in 2014
Mesoscale Discussion 1871
The Storm Prediction Center issued this mesoscale discussion at Oct 13, 2014, 12:13 PM CDT for 16 counties in Alabama; 5 counties in Florida; Early County, Seminole County, Georgia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 13, 2014, 12:13 PM CDT (17:13 UTC)
- Expired
- Oct 13, 2014, 2:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 20%
All 23 counties
Barbour County, AL, Bullock County, AL, Butler County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Monroe County, AL, Montgomery County, AL, Pike County, AL, Calhoun County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Washington County, FL, Early County, GA, Seminole County, GA
The radar
The Ft Rucker radar (KEOX), 72 km from the middle of the area, began a volume at 17:16 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.2 hours before the alert went out and 203 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
- 2 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 1083 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 |
|---|---|---|---|---|
| Oct 13, 2:22 PM CDT | Mesoscale Discussion | SPC | Bibb, Blount, Chilton, Colbert, Cullman, Fayette and 18 more | 113 min |
| Oct 13, 3:37 PM CDT | Tornado Watch | SPC | Autauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 33 more | 8 hr |
| Oct 13, 4:46 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Clarke, Coffee, Conecuh, Covington and 10 more | 89 min |
| Oct 13, 5:27 PM CDT | Mesoscale Discussion | SPC | Colbert, Franklin, Lamar, Lauderdale, Marion | 63 min |
Nearby
Mesoscale Discussions in Alabama, 2014Mesoscale Discussions in Florida, 2014Mesoscale Discussions in Georgia, 2014Every mesoscale discussion in 2014
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.