Alert archive / Florida / Tornado Warnings in 1996

Tornado Warning 33, NWS Jacksonville, FL

October 7, 1996Nassau County, Florida

NWS Jacksonville, FL issued this tornado warning at Oct 7, 1996, 11:10 PM EDT for Nassau County, Florida. It was in force for 65 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: Oct 7, 1996, 11:10 PM EDT (03:10 UTC)
Expired: Oct 8, 1996, 12:15 AM EDT
In force: 65 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Nassau County, FL

What was reported inside it

Time	Report	Where	Remark
Oct 7, 11:40 PM EDT	Thunderstorm Wind 60	Callahan, FL

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 nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 3.2 hours before the alert went out and 14 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 624 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 219 m²/s²
0-3 km storm-relative helicity: 592 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KJAX 080311
TORJAX
FLC089-080415-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1110 PM EDT MON OCT 7 1996
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1215 AM EDT
FOR PERSONS IN THE FOLLOWING LOCATIONS ...
 
IN NORTH FLORIDA
 
   ...NASSAU COUNTY
 
AND THE ADJOINING COASTAL WATERS.
 
 
AT 1108 PM NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO
LOCATED BETWEEN CALLAHAN AND HILLARD ALONG US-301. THE STORM WAS MOVING
SLOWLY NORTHEASTWARD AND WILL MOVE TO EVERGREEN BY 1145 PM.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING.  AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH
OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
 
PW/JOHNSON

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Oct 7, 3:16 AM EDT, 19 hours 54 minutes earlier.

Area forecast discussion, Oct 7, 3:16 AM EDT, 19 hours 54 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
300 AM EDT MON OCT 7 1996

PERIODS OF MDT/HVY CONT TO ADVECT ONSHORE OVR NE FL. DUE TO HEAVY
AMTS OF PCPN PAST FEW DAYS...OUR CWAS ARE GETTING PRETTY SATURATED.
88D INDICATING STEADY FETCH OF PCPN WILL CONT THEREFORE HAVE ISSUED
FFA FOR 5 OF OUR CTYS OVR NE FL.
MORE RAIN ON THE WAY WITH WITH APPCH OF JOSEPHINE. SHOULD SEE SOME
DAYLIGHT BY THE END OF FCST PD...BUT NOT UNTIL THEN.

PRELIM
SSI RR 072/068 076/064 03++7
JAX RR 075/070 079/068 03++7
GNV RR 076/071 080/065 03+96

MOBBS

The office that day

Everything else NWS Jacksonville, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 7, 10:58 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	62 min
Oct 7, 11:03 PM EDT	Flash Flood Warning	JAX	Baker	7 hr
Oct 7, 11:25 PM EDT	Flash Flood Warning	JAX	Clay, Duval, Saint Johns	7 hr
Oct 7, 11:25 PM EDT	Flash Flood Warning	JAX	Nassau	7 hr
Oct 8, 12:02 AM EDT	Tornado Warning	JAX	Marion	58 min
Oct 8, 12:13 AM EDT	Tornado Warning	JAX	Putnam	62 min
Oct 8, 12:29 AM EDT	Tornado Warning	JAX	Saint Johns	61 min
Oct 8, 6:12 AM EDT	Flash Flood Warning	JAX	Clay, Duval, Nassau, Saint Johns	6 hr
Oct 8, 12:00 PM EDT	Flash Flood Warning	JAX	Baker, Clay	6 hr
Oct 8, 12:00 PM EDT	Flash Flood Warning	JAX	Saint Johns	6 hr
Oct 8, 5:18 PM EDT	Flash Flood Warning	JAX	Baker	12 hr

Nearby

Tornado Warnings in Florida, 1996 Every tornado warning in 1996 Tornadoes in 1996

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.