Alert archive / Florida / Tornado Warnings in 2000

Tornado Warning 45, NWS Jacksonville, FL

September 6, 2000Duval County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 6, 2000, 11:33 AM EDT for Duval County, Florida. It was in force for 27 min. 3 reports 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: Sep 6, 2000, 11:33 AM EDT (15:33 UTC)
Expired: Sep 6, 2000, 12:00 PM EDT
In force: 27 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 17 km from the middle of the area, began a volume at 15:35 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.

What was reported inside it

Time	Report	Where	Remark
Sep 6, 11:40 AM EDT	Tornado F0	Jax Craig Muni Arpt, FL	A weak FO was observed touching down in an open area of an industral park just east of UNF.
Sep 6, 11:45 AM EDT	Tornado F0	Jacksonville, FL	Weak FO. The tornado tossed a car on Blanding Blvd, caused some minor roof damage and blew down numerous trees and power lines. More than 7,000 customers were without power for most of the day.
Sep 6, 11:45 AM EDT	Thunderstorm Wind	Jacksonville, FL	Roof damage to homes.

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 12:00Z, 3.6 hours before the alert went out and 19 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: 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.

459 
WFUS52 KJAX 061533
TORJAX
FLC031-061600-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1133 AM EDT WED SEP 6 2000

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL DUVAL COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES...DOWNTOWN JACKSONVILLE...JACKSONVILLE INTERNATIONAL
  AIRPORT...

* UNTIL NOON EDT

* AT 1125 AM EDT A SKYWARN WEATHER SPOTTER REPORTED A TORNADO 2 MILES
  SOUTHWEST OF NORMANDY...OR ABOUT 9 MILES SOUTHWEST OF DOWNTOWN
  JACKSONVILLE...MOVING NORTHEAST AT 15 MPH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE 
FOR DAMAGING WIND IN EXCESS OF 60 MPH...LARGE HAIL...AND DEADLY 
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY 
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

$$
LAT...LON 3026 8191 3018 8173 3045 8154 3055 8176

SHASHY

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 6, 11:22 AM EDT	Severe Thunderstorm Warning	JAX	Duval	38 min
Sep 6, 1:25 PM EDT	Tornado Warning	JAX	Duval	50 min
Sep 6, 2:15 PM EDT	Tornado Warning	JAX	Duval, Saint Johns	45 min
Sep 6, 3:02 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Bradford, Union	43 min
Sep 6, 4:43 PM EDT	Severe Thunderstorm Warning	JAX	Marion	62 min
Sep 6, 4:53 PM EDT	Severe Thunderstorm Warning	JAX	Alachua	67 min
Sep 6, 5:55 PM EDT	Severe Thunderstorm Warning	JAX	Duval	35 min
Sep 6, 7:10 PM EDT	Tornado Warning	JAX	Clay, Putnam	65 min

Nearby

Tornado Warnings in Florida, 2000 Every tornado warning in 2000 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.