Alert archive / Georgia / Mesoscale Discussions in 2014
Mesoscale Discussion 488
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2014, 4:15 AM CDT for 14 counties in Florida; 39 counties in Georgia. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2014, 4:15 AM CDT (09:15 UTC)
- Expired
- Apr 30, 2014, 6:15 AM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 53 counties
Bay County, FL, Calhoun County, FL, Escambia County, FL, Gadsden County, FL, Gulf County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Santa Rosa County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Atkinson County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Calhoun County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Grady County, GA, Houston County, GA, Irwin County, GA, Jeff Davis County, GA, Lanier County, GA, Lee County, GA, Lowndes County, GA, Macon County, GA, Miller County, GA, Mitchell County, GA, Peach County, GA, Pulaski County, GA, Randolph County, GA, Schley County, GA, Stewart County, GA, Sumter County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth County, GA
The radar
The Eglin Afb radar (KEVX), 55 km from the middle of the area, began a volume at 09:18 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 9.3 hours before the alert went out and 113 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
- 124 J/kg
- Mixed-layer CIN
- -255 J/kg
- Mixed-layer LCL
- 1698 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 229 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 29, 9:01 PM CDT | Mesoscale Discussion | SPC | Escambia, Okaloosa, Santa Rosa | 59 min |
| Apr 29, 9:56 PM CDT | Tornado Watch | SPC | Bay, Gulf, Holmes, Walton, Washington | 4 hr |
| Apr 29, 11:29 PM CDT | Mesoscale Discussion | SPC | Bay, Holmes, Walton, Washington | 2 hr |
| Apr 30, 12:45 AM CDT | Tornado Watch | SPC | Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more | 8 hr |
| Apr 30, 1:39 AM CDT | Mesoscale Discussion | SPC | Bay, Calhoun, Gadsden, Jackson, Leon, Liberty | 96 min |
| Apr 30, 6:17 AM CDT | Mesoscale Discussion | SPC | Franklin, Gulf, Liberty, Wakulla | 88 min |
| Apr 30, 8:58 AM CDT | Mesoscale Discussion | SPC | Dixie, Franklin, Jefferson, Lafayette, Leon, Liberty and 2 more | 62 min |
| Apr 30, 1:16 PM CDT | Mesoscale Discussion | SPC | Citrus, Flagler, Hernando, Lake, Marion, Putnam and 3 more | 119 min |
Nearby
Mesoscale Discussions in Georgia, 2014Mesoscale Discussions in Florida, 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.