Alert archive / Florida / Tornado Warnings in 2004

Tornado Warning 21, NWS Jacksonville, FL

September 5, 2004Putnam County, Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 5, 2004, 2:40 AM EDT for Putnam County, Saint Johns County, Florida. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 5, 2004, 2:40 AM EDT (06:40 UTC)
Expired: Sep 5, 2004, 3:30 AM EDT
In force: 50 min
Issued by: NWS Jacksonville, FL
Area: Counties, with a storm outline in the text

Counties Putnam County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 80 km from the middle of the area, began a volume at 06:41 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.

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 4, 7:55 PM EDT	Tornado Watch	SPC	12 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 6.7 hours before the alert went out and 82 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: 2112 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 585 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 133 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 
WFUS52 KJAX 050640
TORJAX
FLC107-109-050730-
/X.NEW.KJAX.TO.W.0001.040905T0640Z-040905T0730Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
240 AM EDT SUN SEP 5 2004

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN PUTNAM COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES THE CITY OF INTERLACHEN
  SOUTH CENTRAL ST. JOHNS COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES THE CITY OF HASTINGS

* UNTIL 330 AM EDT

* AT 230 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO NEAR HASTINGS...MOVING WEST AT 55 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  BOSTWICK BY 245 AM EDT
  FLORAHOME BY 300 AM EDT

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL
WEATHER SERVICE IN JACKSONVILLE DIRECTLY AT 800-499-1594 TO REPORT
SEVERE WEATHER.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 AM EDT SUNDAY MORNING FOR
NORTHEASTERN FLORIDA.

LAT...LON 2969 8143 2956 8204 2971 8203 2978 8191
      2981 8184 2984 8157 2985 8155 2985 8148
      2984 8147

$$

PETERSON

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 5, 4:34 AM EDT	Tornado Warning	JAX	Clay	41 min
Sep 5, 4:51 AM EDT	Tornado Warning	JAX	Saint Johns	24 min
Sep 5, 6:16 AM EDT	Tornado Warning	JAX	Marion	29 min
Sep 5, 7:45 AM EDT	Tornado Warning	JAX	Clay	30 min
Sep 5, 9:16 AM EDT	Tornado Warning	JAX	Flagler, Saint Johns	14 min
Sep 5, 2:09 PM EDT	Tornado Warning	JAX	Hamilton, Suwannee	36 min
Sep 5, 4:53 PM EDT	Tornado Warning	JAX	Saint Johns	52 min
Sep 5, 6:10 PM EDT	Tornado Warning	JAX	Baker, Duval	50 min
Sep 5, 6:35 PM EDT	Tornado Warning	JAX	Putnam	40 min
Sep 5, 6:50 PM EDT	Tornado Warning	JAX	Alachua	40 min
Sep 5, 6:59 PM EDT	Tornado Warning	JAX	Duval	46 min

Nearby

Tornado Warnings in Florida, 2004 Every tornado warning in 2004 Tornadoes in 2004

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; radar from the NEXRAD Level II archive.