Alert archive / Alabama / Mesoscale Discussions in 2013
Mesoscale Discussion 305
The Storm Prediction Center issued this mesoscale discussion at Mar 23, 2013, 2:52 PM CDT for 4 states. It was in force for 83 min.
The area
The outline as issued.
The facts
- Issued
- Mar 23, 2013, 2:52 PM CDT (19:52 UTC)
- Expired
- Mar 23, 2013, 4:15 PM CDT
- In force
- 83 min
- Issued by
- the Storm Prediction Center
All 57 counties
Baldwin County, AL, Butler County, AL, Choctaw 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, Henry County, AL, Houston County, AL, Marengo County, AL, Mobile County, AL, Monroe County, AL, Pike County, AL, Washington County, AL, Wilcox County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Santa Rosa County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Brooks County, GA, Calhoun County, GA, Clay County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Miller County, GA, Mitchell County, GA, Seminole County, GA, Thomas County, GA, Clarke County, MS, George County, MS, Greene County, MS, Lauderdale County, MS, Perry County, MS, Wayne County, MS
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, 7.9 hours before the alert went out and 244 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
- 65 J/kg
- Mixed-layer CIN
- -355 J/kg
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 329 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.0
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, 3:41 AM CDT | Mesoscale Discussion | SPC | Blount, Colbert, Cullman, Fayette, Franklin, Jefferson and 12 more | 64 min |
| Mar 23, 7:38 AM CDT | Mesoscale Discussion | SPC | Baldwin, Covington, Escambia, Geneva, Mobile | 97 min |
| Mar 23, 12:35 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 8 more | 85 min |
| Mar 23, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Barbour, Bullock, Butler, Choctaw, Clarke and 19 more | 9 hr |
| Mar 23, 5:22 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Coffee, Conecuh and 13 more | 53 min |
| Mar 23, 6:24 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Butler, Chilton, Choctaw and 24 more | 66 min |
| Mar 23, 6:42 PM CDT | Severe Thunderstorm Watch | SPC | Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more | 7 hr |
| Mar 23, 6:49 PM CDT | Mesoscale Discussion | SPC | Greene, Lamar, Pickens, Sumter | 116 min |
| Mar 23, 9:54 AM CDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 7 more | 36 min |
| Mar 23, 9:59 AM CDT | Severe Thunderstorm Watch | SPC | Baker, Bradford, Clay, Columbia, Duval, Hamilton and 8 more | 6 hr |
| Mar 23, 11:16 AM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 6 more | 89 min |
| Mar 23, 12:25 PM CDT | Mesoscale Discussion | SPC | Bradford, Clay, Columbia, Union | 35 min |
| Mar 23, 1:15 PM CDT | Mesoscale Discussion | SPC | Alachua, Brevard, Citrus, Hardee, Hernando, Hillsborough and 11 more | 2 hr |
| Mar 23, 1:44 PM CDT | Mesoscale Discussion | SPC | Baker, Bradford, Clay, Columbia, Duval, Hamilton and 4 more | 31 min |
| Mar 23, 3:33 PM CDT | Mesoscale Discussion | SPC | Baker, Bradford, Clay, Columbia, Duval, Nassau and 1 more | 27 min |
| Mar 22, 8:16 PM CDT | Mesoscale Discussion | SPC | Attala, Bolivar, Carroll, Choctaw, Claiborne, Copiah and 18 more | 119 min |
| Mar 23, 5:01 PM CDT | Mesoscale Discussion | SPC | Adams, Attala, Carroll, Choctaw, Claiborne, Copiah and 28 more | 119 min |
| Mar 23, 5:21 PM CDT | Tornado Watch | SPC | Adams, Amite, Claiborne, Clarke, Copiah, Covington and 25 more | 6 hr |
| Mar 23, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Attala, Bolivar, Calhoun, Carroll, Chickasaw, Choctaw and 29 more | 5 hr |
Nearby
Mesoscale Discussions in Alabama, 2013Mesoscale Discussions in Florida, 2013Mesoscale Discussions in Georgia, 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.