Alert archive / Florida / Tornado Warnings in 2000

Tornado Warning 50, NWS Jacksonville, FL

September 6, 2000Duval County, Saint Johns County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 6, 2000, 2:15 PM EDT for Duval County, Saint Johns County, Florida. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Sep 6, 2000, 2:15 PM EDT (18:15 UTC)
Expired
Sep 6, 2000, 3:00 PM EDT
In force
45 min
Issued by
NWS Jacksonville, FL
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Duval County, FL, Saint Johns County, FL

The radar

The Jacksonville radar (KJAX), 27 km from the middle of the area, began a volume at 18:16 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 nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 6.3 hours before the alert went out and 28 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 2000-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 529 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2000-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 145 square meters per square second.193958Sfc1 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
529 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
678 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
145 m²/s²
0-3 km storm-relative helicity
282 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.9

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KJAX 061816
TORJAX

FLC031-109-061900-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
215 PM EDT WED SEP 6 2000

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN DUVAL COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES...ARLINGTON...ATLANTIC BEACH...JACKSONVILLE BEACH...
  UNF...
  EXTREME NORTH CENTRAL ST. JOHNS COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES...PALM VALLEY...PONTE VEDRA BEACH...

* UNTIL 300 PM EDT

* AT 211 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A   
  DEVELOPING TORNADO OVER UNF...MOVING NORTH 5 MPH.

THIS IS A EXTREMELY DANGEROUS AND POTENTIALLY LIFE THREATENING 
TORNADO. EVACUATE MOBILE HOMES AND GO TO A STURDY BUILDING. IN A 
STURDY BUILDING MOVE TO A PLACE OF SAFETY...AWAY FROM WINDOWS...IN AN
INTERIOR ROOM ON THE LOWEST FLOOR IF YOU ARE IN THE PATH OF THIS 
TORNADO.

LAT...LON 3041 8158 3024 8166 3012 8143 3034 8131

$$

SCOTT

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 11:22 AM EDTSevere Thunderstorm WarningJAXDuval38 min
Sep 6, 11:33 AM EDTTornado WarningJAXDuval27 min
Sep 6, 1:25 PM EDTTornado WarningJAXDuval50 min
Sep 6, 3:02 PM EDTSevere Thunderstorm WarningJAXAlachua, Bradford, Union43 min
Sep 6, 4:43 PM EDTSevere Thunderstorm WarningJAXMarion62 min
Sep 6, 4:53 PM EDTSevere Thunderstorm WarningJAXAlachua67 min
Sep 6, 5:55 PM EDTSevere Thunderstorm WarningJAXDuval35 min
Sep 6, 7:10 PM EDTTornado WarningJAXClay, Putnam65 min

Nearby

Tornado Warnings in Florida, 2000Every tornado warning in 2000Tornadoes in 2000

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.