Alert archive / Georgia / Tornado Warnings in 2002
Tornado Warning 15, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Nov 12, 2002, 8:00 AM EST for Bacon County, Coffee County, Jeff Davis County, Georgia. It was in force for 7 hr. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 12, 2002, 8:00 AM EST (13:00 UTC)
- Expired
- Nov 12, 2002, 3:00 PM EST
- In force
- 7 hr
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
Counties Bacon County, GA, Coffee County, GA, Jeff Davis County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 12, 8:20 AM EST | Tornado F0 | Alma, GA | One mobile home destroyed and a portion of the roof of an adjacent wood frame structure removed. Several large trees down across roadway. Several tree tops snapped off and twisted. Debris wrapped around tree tops. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 12, 2:40 AM EST | Tornado Watch | SPC | 5 hr |
| Nov 12, 7:30 AM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 1.0 hours before the alert went out and 155 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
- 2355 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 469 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 5.4
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 12, 2:13 AM EST | Severe Thunderstorm Warning | JAX | 47 min | |
| Nov 12, 2:34 AM EST | Tornado Warning | JAX | Hamilton | 10 hr |
| Nov 12, 2:34 AM EST | Tornado Warning | JAX | Hamilton, Suwannee | 10 hr |
| Nov 12, 3:04 AM EST | Severe Thunderstorm Warning | JAX | 56 min | |
| Nov 12, 3:59 AM EST | Severe Thunderstorm Warning | JAX | 46 min | |
| Nov 12, 11:14 AM EST | Severe Thunderstorm Warning | JAX | 46 min | |
| Nov 12, 11:28 AM EST | Tornado Warning | JAX | Baker | 42 days |
| Nov 12, 12:18 PM EST | Tornado Warning | JAX | Alachua | 27 min |
| Nov 12, 12:58 PM EST | Severe Thunderstorm Warning | JAX | 32 min | |
| Nov 12, 1:07 PM EST | Special Marine Warning | JAX | 113 min | |
| Nov 12, 1:23 PM EST | Severe Thunderstorm Warning | JAX | 22 min | |
| Nov 12, 1:30 PM EST | Tornado Warning | JAX | Duval | 42 days |
| Nov 12, 2:19 PM EST | Tornado Warning | JAX | Saint Johns | 41 min |
| Nov 12, 2:41 PM EST | Special Marine Warning | JAX | 2 hr | |
| Nov 12, 7:25 AM EST | Tornado Warning | JAX | Atkinson, Coffee | 7 hr |
| Nov 12, 8:15 AM EST | Tornado Warning | JAX | Appling | 42 days |
Nearby
Tornado Warnings in Georgia, 2002Every tornado warning in 2002Tornadoes in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.