Alert archive / Georgia / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 80, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 9, 1998, 3:45 AM EDT for Jeff Davis County, Georgia. It was in force for 60 min. 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
- Apr 9, 1998, 3:45 AM EDT (07:45 UTC)
- Expired
- Apr 9, 1998, 4:45 AM EDT
- In force
- 60 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
County Jeff Davis County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 9, 4:10 AM EDT | Thunderstorm Wind | Hazelhurst, GA | Large trees and power lines were blown down. |
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 |
|---|---|---|---|
| Apr 9, 2:30 AM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 7.8 hours before the alert went out and 170 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
- 14 J/kg
- Mixed-layer CIN
- -181 J/kg
- Mixed-layer LCL
- 512 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 176 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Apr 9, 2:30 AM EDT, 1 hour 15 minutes earlier.
Area forecast discussion, Apr 9, 2:30 AM EDT, 1 hour 15 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 230 AM EDT THU APR 9 1998 LITTLE BUSY THIS AM... TORNADO WATCH PRETTY WELL SPELLS OUT THE PRBLM THIS AM! FNTL SYS LOOKS TO MAKE IT`S WAY <INTO THE AREA DRG THE AFTN HR. JAX VAD WND HAS 50 KT JET JUST OFF SFC THIS AM W/ STORM TRACKING NE. PRELIM SSI TU 080/054 069/047 07610 JAX TU 083/053 071/045 07610 GNV TU 083/053 072/046 07610 K. KUYPER
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 4:38 AM EDT | Severe Thunderstorm Warning | JAX | Hamilton | 62 min |
| Apr 9, 6:17 AM EDT | Severe Thunderstorm Warning | JAX | Suwannee | 63 min |
| Apr 9, 6:33 AM EDT | Severe Thunderstorm Warning | JAX | Columbia | 47 min |
| Apr 9, 7:33 AM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 77 min |
| Apr 9, 8:06 AM EDT | Tornado Warning | JAX | Duval | 64 min |
| Apr 9, 2:57 AM EDT | Severe Thunderstorm Warning | JAX | Appling | 63 min |
| Apr 9, 3:53 AM EDT | Tornado Warning | JAX | Jeff Davis | 47 min |
| Apr 9, 4:48 AM EDT | Tornado Warning | JAX | Jeff Davis | 47 min |
| Apr 9, 5:04 AM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols | 61 min |
| Apr 9, 5:21 AM EDT | Severe Thunderstorm Warning | JAX | Coffee | 49 min |
| Apr 9, 5:59 AM EDT | Tornado Warning | JAX | Appling | 66 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 1998Every severe thunderstorm warning in 1998
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.