Alert archive / Georgia / Mesoscale Discussions in 2017
Mesoscale Discussion 15
The Storm Prediction Center issued this mesoscale discussion at Jan 3, 2017, 12:10 AM EST for 7 counties in Florida; 31 counties in Georgia; 4 counties in South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 3, 2017, 12:10 AM EST (05:10 UTC)
- Expired
- Jan 3, 2017, 2:15 AM EST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 42 counties
Baker County, FL, Hamilton County, FL, Jefferson County, FL, Liberty County, FL, Madison County, FL, Nassau County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Bulloch County, GA, Camden County, GA, Candler County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Glynn County, GA, Jeff Davis County, GA, Jenkins County, GA, Lanier County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Montgomery County, GA, Pierce County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Treutlen County, GA, Ware County, GA, Wayne County, GA, Beaufort County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC
The radar
The Moody AFB radar (KVAX), 46 km from the middle of the area, began a volume at 05:11 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
Jacksonville, FL (KJAX), launched 00:00Z, 5.2 hours before the alert went out and 136 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
- 1191 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 953 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.2
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 2, 9:15 PM EST | Mesoscale Discussion | SPC | Calhoun, Gadsden, Jackson, Jefferson, Leon, Liberty and 2 more | 60 min |
| Jan 2, 10:27 PM EST | Tornado Watch | SPC | Hamilton, Jefferson, Madison | 3 hr |
| Jan 3, 12:12 PM EST | Mesoscale Discussion | SPC | Baker, Bradford, Clay, Columbia, Duval, Nassau and 2 more | 2 hr |
Nearby
Mesoscale Discussions in Georgia, 2017Mesoscale Discussions in Florida, 2017Mesoscale Discussions in South Carolina, 2017Every mesoscale discussion in 2017
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.