Alert archive / Florida / Tornado Warnings in 1994

Tornado Warning 9, NWS Jacksonville, FL

September 25, 1994Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 25, 1994, 3:53 PM EDT for Saint Johns County, Florida. It was in force for 37 min.

The area

The counties it named.

The facts

Issued
Sep 25, 1994, 3:53 PM EDT (19:53 UTC)
Expired
Sep 25, 1994, 4:30 PM EDT
In force
37 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Saint Johns County, FL

The nearest sounding before it

Jacksonville, FL (KAYS), launched 12:00Z, 7.9 hours before the alert went out and 71 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 1994-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1622 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 1994-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1622 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
526 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KJAX 251954
TORJAX
FLC109-252030-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
353 PM EDT SUN SEP 25 1994
 
THE NATIONAL WEATHER SERVICE IN JACKSONVILLE FL   HAS ISSUED A
TORNADO WARNING AND MARINE WARNING EFFECTIVE UNTIL  430 PM EDT
...
 
IN NORTH FLORIDA
 
   ...EASTERN ST.JOHNS COUNTY
 
NORTHEAST FLORIDA COAST AND THE ADJACENT COASTAL WATERS.
 
A TORNADO WAS ON THE GROUND NEAR GUANA LAKE IN EASTERN ST JOHNS COUNTY.
MOVEMENT WAS TOWARDS THE SOUTHEAST.
 
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.
 
 
 
&

Nearby

Tornado Warnings in Florida, 1994Every tornado warning in 1994Tornadoes in 1994

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.