Alert archive / Georgia / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 311, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Aug 28, 2015, 3:09 PM EDT for Atkinson County, Coffee County, Georgia. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 28, 2015, 3:09 PM EDT (19:09 UTC)
- Expired
- Aug 28, 2015, 3:45 PM EDT
- In force
- 36 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
Counties Atkinson County, GA, Coffee County, GA
The radar
The Moody AFB radar (KVAX), 61 km from the middle of the area, began a volume at 19:08 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 12:00Z, 7.2 hours before the alert went out and 178 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
- 1309 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 3:34 PM EDT, 23 hours 35 minutes earlier.
Area forecast discussion, Aug 27, 3:34 PM EDT, 23 hours 35 minutes before
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 8:33 PM EDT | Special Weather Statement | JAX | Union | 27 min |
| Aug 28, 2:55 PM EDT | Areal Flood Advisory | JAX | Nassau | 95 min |
| Aug 28, 4:39 PM EDT | Special Weather Statement | JAX | Duval | 51 min |
| Aug 28, 6:04 PM EDT | Special Weather Statement | JAX | Alachua | 26 min |
| Aug 28, 6:49 PM EDT | Special Weather Statement | JAX | Citrus | 26 min |
| Aug 27, 8:10 PM EDT | Areal Flood Advisory | JAX | Ware | 95 min |
| Aug 27, 8:55 PM EDT | Special Weather Statement | JAX | Clinch | 35 min |
| Aug 27, 9:26 PM EDT | Special Weather Statement | JAX | Clinch | 34 min |
| Aug 28, 12:03 PM EDT | Areal Flood Advisory | JAX | Glynn | 87 min |
| Aug 28, 2:20 PM EDT | Areal Flood Advisory | JAX | Glynn | 85 min |
| Aug 28, 2:31 PM EDT | Special Weather Statement | JAX | Bacon | 29 min |
| Aug 28, 2:59 PM EDT | Special Weather Statement | JAX | Atkinson | 46 min |
| Aug 28, 3:15 PM EDT | Special Weather Statement | JAX | Jeff Davis | 45 min |
| Aug 28, 3:24 PM EDT | Areal Flood Advisory | JAX | Atkinson, Coffee | 96 min |
| Aug 28, 3:59 PM EDT | Special Weather Statement | JAX | Jeff Davis | 31 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2015Every severe thunderstorm warning in 2015
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.