Alert archive / Georgia / Mesoscale Discussions in 2013
Mesoscale Discussion 534
The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2013, 1:57 PM EDT for 23 counties in Florida; 80 counties in Georgia; 18 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 19, 2013, 1:57 PM EDT (17:57 UTC)
- Expired
- Apr 19, 2013, 4:00 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 121 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Calhoun County, FL, Clay County, FL, Columbia County, FL, Dixie County, FL, Duval County, FL, Franklin County, FL, Gadsden County, FL, Gilchrist County, FL, Gulf County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Baldwin County, GA, Ben Hill County, GA, Berrien County, GA, Bibb County, GA, Bleckley County, GA, Brantley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Burke County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Columbia County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glascock County, GA, Glynn County, GA, Grady County, GA, Greene County, GA, Hancock County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Lincoln County, GA, Long County, GA, Lowndes County, GA, McDuffie County, GA, McIntosh County, GA, Mitchell County, GA, Montgomery County, GA, Oglethorpe County, GA, Peach County, GA, Pierce County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Screven County, GA, Taliaferro County, GA, Tattnall County, GA, Telfair County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Ware County, GA, Warren County, GA, Washington County, GA, Wayne County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Worth County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Beaufort County, SC, Berkeley County, SC, Calhoun County, SC, Charleston County, SC, Clarendon County, SC, Colleton County, SC, Dorchester County, SC, Edgefield County, SC, Georgetown County, SC, Hampton County, SC, Jasper County, SC, Lexington County, SC, McCormick County, SC, Orangeburg County, SC
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 6.0 hours before the alert went out and 106 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
- 93 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1102 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -82 m²/s²
- 0-3 km storm-relative helicity
- -53 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 |
|---|---|---|---|---|
| Apr 19, 11:42 AM EDT | Mesoscale Discussion | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 9 more | 3 hr |
| Apr 19, 12:37 PM EDT | Severe Thunderstorm Watch | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 6 more | 6 hr |
| Apr 19, 4:29 PM EDT | Mesoscale Discussion | SPC | Hamilton, Jefferson, Lafayette, Madison, Taylor, Wakulla | 2 hr |
| Apr 19, 6:37 PM EDT | Mesoscale Discussion | SPC | Hamilton, Madison, Taylor | 113 min |
| Apr 19, 2:52 AM EDT | Mesoscale Discussion | SPC | Bartow, Carroll, Catoosa, Chattooga, Dade, Fannin and 10 more | 83 min |
| Apr 19, 2:00 PM EDT | Tornado Watch | SPC | Elbert, Hart | 7 hr |
| Apr 19, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | Appling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 20 more | 7 hr |
| Apr 19, 12:35 PM EDT | Mesoscale Discussion | SPC | Abbeville, Anderson, Cherokee, Chester, Chesterfield, Darlington and 16 more | 115 min |
| Apr 19, 4:48 PM EDT | Mesoscale Discussion | SPC | Chester, Chesterfield, Darlington, Dillon, Fairfield, Florence and 9 more | 57 min |
| Apr 19, 6:27 PM EDT | Severe Thunderstorm Watch | SPC | Georgetown, Horry | 4 hr |
| Apr 19, 6:54 PM EDT | Mesoscale Discussion | SPC | Dillon | 66 min |
Nearby
Mesoscale Discussions in Georgia, 2013Mesoscale Discussions in Florida, 2013Mesoscale Discussions in South Carolina, 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.