Alert archive / Florida / Tornado Warnings in 1997

Tornado Warning 10, NWS Jacksonville, FL

April 23, 1997Bradford County, Clay County, Florida

NWS Jacksonville, FL issued this tornado warning at Apr 23, 1997, 8:31 AM EDT for Bradford County, Clay County, Florida. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 23, 1997, 8:31 AM EDT (12:31 UTC)
Expired: Apr 23, 1997, 9:30 AM EDT
In force: 59 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Bradford County, FL, Clay County, FL

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 23, 3:00 AM EDT	Tornado Watch	SPC	6 hr
Apr 23, 8:00 AM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 0.5 hours before the alert went out and 67 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: 712 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -215 m²/s²
0-3 km storm-relative helicity: -74 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 231231 RRA
TORJAX
FLC007-019-231330-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
831 AM EDT WED APR 23 1997
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  930 AM EDT
FOR PERSONS IN THE FOLLOWING LOCATIONSS...
 
IN NORTH FLORIDA
 
   ...SOUTHERN BRADFORD COUNTY...CLAY COUNTY
 
AT 825 AM EDT A SPOTTER REPORTED A TORNADO ON THE GROPUND IN TEH WALDO
AREA. THIS STORM WILL MOVE ACROSS SOUTHERN BRADFORD COUNTY NEAR HAMPTON
BY 850 AM. THE SOTRM WILL THEN MOVE INTO THE CAMP BLANDING AREA AND TO
NEAR PENNY FARMS BY 915 AM.
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
SANDRIK
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 23, 4:59 AM EDT	Tornado Warning	JAX	Nassau	31 min
Apr 23, 5:29 AM EDT	Severe Thunderstorm Warning	JAX	Duval	61 min
Apr 23, 7:29 AM EDT	Severe Thunderstorm Warning	JAX	Clay	31 min
Apr 23, 7:38 AM EDT	Severe Thunderstorm Warning	JAX	Columbia, Suwannee	37 min
Apr 23, 7:46 AM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	44 min
Apr 23, 7:57 AM EDT	Tornado Warning	JAX	Clay, Putnam	33 min
Apr 23, 8:13 AM EDT	Tornado Warning	JAX	Alachua	47 min
Apr 23, 8:43 AM EDT	Flash Flood Warning	JAX	Alachua	4 hr
Apr 23, 9:41 AM EDT	Severe Thunderstorm Warning	JAX	Flagler	49 min
Apr 23, 9:56 AM EDT	Tornado Warning	JAX	Marion	64 min
Apr 23, 10:08 AM EDT	Flash Flood Warning	JAX	Putnam	4 hr
Apr 23, 10:31 AM EDT	Severe Thunderstorm Warning	JAX	Flagler	29 min
Apr 23, 11:39 AM EDT	Severe Thunderstorm Warning	JAX	Alachua	36 min
Apr 23, 11:50 AM EDT	Severe Thunderstorm Warning	JAX	Clay	40 min

Nearby

Tornado Warnings in Florida, 1997 Every tornado warning in 1997 Tornadoes in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.