Alert archive / Georgia / Mesoscale Discussions in 2004
Mesoscale Discussion 1684
The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2004, 10:08 AM CDT for Houston County, Alabama; 18 counties in Florida; 31 counties in Georgia. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 15, 2004, 10:08 AM CDT (15:08 UTC)
- Expired
- Jul 15, 2004, 12:45 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 50 counties
Houston County, AL, Baker County, FL, Bradford County, FL, Calhoun County, FL, Columbia County, FL, Duval County, FL, Gadsden County, FL, Hamilton County, FL, Jackson 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, Atkinson County, GA, Bacon County, GA, Baker County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Calhoun County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Glynn County, GA, Grady County, GA, Lanier County, GA, Lowndes County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Pierce County, GA, Seminole County, GA, Thomas County, GA, Tift County, GA, Ware County, GA, Wayne County, GA, Worth County, GA
The nearest sounding before it
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 3.1 hours before the alert went out and 125 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
- 3672 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- -9 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 |
|---|---|---|---|---|
| Jul 14, 8:16 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Blount, Calhoun, Chambers, Cherokee and 31 more | 59 min |
| Jul 15, 1:12 PM CDT | Mesoscale Discussion | SPC | Autauga, Bibb, Butler, Chilton, Choctaw, Clarke and 11 more | 2 hr |
| Jul 15, 2:20 PM CDT | Severe Thunderstorm Watch | SPC | Choctaw, Mobile, Washington | 6 hr |
| Jul 15, 2:55 PM CDT | Mesoscale Discussion | SPC | Dale, Geneva, Henry, Houston | 2 hr |
| Jul 15, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | Barbour, Coffee, Covington, Crenshaw, Dale, Geneva and 3 more | 5 hr |
| Jul 15, 5:18 PM CDT | Mesoscale Discussion | SPC | Baldwin, Butler, Choctaw, Clarke, Coffee, Conecuh and 12 more | 117 min |
Nearby
Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in Florida, 2004Mesoscale Discussions in Alabama, 2004Every mesoscale discussion in 2004
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.