Alert archive / Florida / Tornado Warnings in 1998
Tornado Warning 46, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Sep 2, 1998, 10:23 PM EDT for Clay County, Florida. It was in force for 62 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
- Sep 2, 1998, 10:23 PM EDT (02:23 UTC)
- Expired
- Sep 2, 1998, 11:25 PM EDT
- In force
- 62 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
County Clay County, FL
The radar
The Jacksonville radar (KJAX), 58 km from the middle of the area, began a volume at 02:12 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 2, 10:45 PM EDT | Thunderstorm Wind | Green Cove Spgs, FL | 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 |
|---|---|---|---|
| Sep 2, 3:00 PM EDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 00:00Z, 2.4 hours before the alert went out and 59 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
- 93 J/kg
- Mixed-layer CIN
- -116 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
368 WFUS1 KJAX 030224 RRA TORJAX FLC019-030325- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSONVILLE FL 1023 PM EDT WED SEP 2 1998 * TORNADO WARNING FOR... CLAY COUNTY IN NORTHEASTERN FLORIDA * UNTIL 1125 PM EDT * AT 1020 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 7 MILES SOUTHWEST OF HIBERNIA MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE... DOCTORS INLET BY 1035 PM EDT HIBERNIA BY 1035 PM EDT ORANGE PARK BY 1050 PM EDT GO TO A SMALL INTERIOR ROOM... ON THE LOWEST FLOOR. IF YOU ARE CAUGHT OUTSIDE...SEEK SAFETY IN A NEARBY STURDY BUILDING. AS A LAST RESORT... SEEK REFUGE IN A CULVERT... DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. BEWARE THE THREAT OF RISING WATER. SANTOS
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 8:44 PM EDT | Tornado Warning | JAX | Alachua | 61 min |
| Sep 2, 8:54 PM EDT | Tornado Warning | JAX | Putnam | 61 min |
| Sep 2, 9:30 PM EDT | Tornado Warning | JAX | Clay | 55 min |
| Sep 2, 10:18 PM EDT | Tornado Warning | JAX | Alachua, Bradford | 47 min |
| Sep 2, 10:43 PM EDT | Tornado Warning | JAX | Duval | 77 min |
| Sep 2, 11:45 PM EDT | Severe Thunderstorm Warning | JAX | Nassau | 75 min |
| Sep 3, 1:53 AM EDT | Severe Thunderstorm Warning | JAX | Hamilton, Suwannee | 77 min |
| Sep 3, 2:34 AM EDT | Severe Thunderstorm Warning | JAX | Columbia, Gilchrist | 91 min |
| Sep 3, 3:10 AM EDT | Severe Thunderstorm Warning | JAX | Hamilton, Suwannee | 90 min |
| Sep 3, 4:04 AM EDT | Severe Thunderstorm Warning | JAX | Columbia, Gilchrist | 91 min |
| Sep 3, 4:59 AM EDT | Severe Thunderstorm Warning | JAX | Alachua | 61 min |
| Sep 3, 5:23 AM EDT | Severe Thunderstorm Warning | JAX | Baker, Bradford, Columbia, Union | 62 min |
Nearby
Tornado Warnings in Florida, 1998Every tornado warning in 1998Tornadoes 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; radar from the NEXRAD Level II archive.