Alert archive / Florida / Tornado Warnings in 2002
Tornado Warning 39, NWS Jacksonville, FL
NWS Jacksonville, FL issued this tornado warning at Dec 24, 2002, 1:12 PM EST for Clay County, Florida. It was in force for 48 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
- Dec 24, 2002, 1:12 PM EST (18:12 UTC)
- Expired
- Dec 24, 2002, 2:00 PM EST
- In force
- 48 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 18:15 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 |
|---|---|---|---|
| Dec 24, 1:30 PM EST | Thunderstorm Wind | Middleburg, FL | Red Oaks 24 inches in diameter downed, broken off 4 feet above the ground. Black Creek area. |
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 |
|---|---|---|---|
| Dec 24, 9:20 AM EST | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 6.2 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
- 101 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 495 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 251 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
763 WFUS52 KJAX 241812 TORJAX FLC019-241900- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE JACKSONVILLE FL 111 PM EST TUE DEC 24 2002 THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A * TORNADO WARNING FOR... CLAY COUNTY IN NORTHEAST FLORIDA * UNTIL 200 PM EST * AT 105 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A DEVELOPING TORNADO 3 MILES SOUTH OF KINGSLEY...OR ABOUT 15 MILES NORTH OF MELROSE...MOVING EAST AT 35 MPH. * SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 200 PM EST... KINGSLEY... MIDDLEBURG... GREEN COVE SPRINGS... PEOPLE OUTSIDE SHOULD MOVE TO A BUILDING OR STRUCTURE WHICH WILL PROVIDE ADEQUATE PROTECTION. MOBILE HOMES AND TRAILERS DO NOT PROVIDE ADEQUATE PROTECTION FROM A SEVERE STORM. LAT...LON 3002 8204 2983 8203 2988 8161 3014 8171 $$ WELSH
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 24, 9:56 AM EST | Severe Thunderstorm Warning | JAX | 49 min | |
| Dec 24, 10:04 AM EST | Severe Thunderstorm Warning | JAX | 56 min | |
| Dec 24, 10:21 AM EST | Severe Thunderstorm Warning | JAX | 54 min | |
| Dec 24, 11:05 AM EST | Severe Thunderstorm Warning | JAX | 40 min | |
| Dec 24, 11:25 AM EST | Severe Thunderstorm Warning | JAX | 50 min | |
| Dec 24, 11:45 AM EST | Special Marine Warning | JAX | 3 hr | |
| Dec 24, 11:58 AM EST | Severe Thunderstorm Warning | JAX | 47 min | |
| Dec 24, 12:28 PM EST | Tornado Warning | JAX | Suwannee | 92 min |
| Dec 24, 12:35 PM EST | Flash Flood Warning | JAX | Suwannee | 115 min |
| Dec 24, 12:53 PM EST | Tornado Warning | JAX | Duval | 22 min |
| Dec 24, 12:55 PM EST | Tornado Warning | JAX | Suwannee | 50 min |
| Dec 24, 12:59 PM EST | Tornado Warning | JAX | Alachua, Bradford | 46 min |
| Dec 24, 1:01 PM EST | Tornado Warning | JAX | Columbia, Union | 59 min |
| Dec 24, 1:55 PM EST | Special Marine Warning | JAX | 2 hr | |
| Dec 24, 4:46 PM EST | Severe Thunderstorm Warning | JAX | 44 min |
Nearby
Tornado Warnings in Florida, 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; radar from the NEXRAD Level II archive.