Alert archive / Florida / Tornado Warnings in 2000

Tornado Warning 51, NWS Jacksonville, FL

September 6, 2000Clay County, Putnam County, Florida

NWS Jacksonville, FL issued this tornado warning at Sep 6, 2000, 7:10 PM EDT for Clay County, Putnam County, Florida. It was in force for 65 min. 2 reports came from 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, with what was reported inside it.

The facts

Issued: Sep 6, 2000, 7:10 PM EDT (23:10 UTC)
Expired: Sep 6, 2000, 8:15 PM EDT
In force: 65 min
Issued by: NWS Jacksonville, FL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Clay County, FL, Putnam County, FL

The radar

The Jacksonville radar (KJAX), 71 km from the middle of the area, began a volume at 23:12 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, 7:30 PM EDT	Thunderstorm Wind	Florahome, FL	Large trees and power lines were blown down.
Sep 6, 8:05 PM EDT	Thunderstorm Wind	Belmore, FL	Large trees and power lines were blown down.

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, 11.2 hours before the alert went out and 73 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.

000 
WFUS52 KJAX 062311
TORJAX

FLC019-107-070015-

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

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CLAY COUNTY IN NORTHEAST FLORIDA
  NORTHWESTERN PUTNAM COUNTY IN NORTHEAST FLORIDA

* UNTIL 815 PM EDT

* AT 702 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES WEST OF
  FLORAHOME...OR ABOUT 7 MILES EAST OF MELROSE...MOVING NORTH AT 25
  MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 815 PM EDT...
  KEYSTONE HEIGHTS...
  PUTNAM HALL...
  CAMP BLANDING...  

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A STRONG
BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY
FROM WINDOWS UNTIL THE STO-RM HAS PASSED.

LAT...LON 2968 8204 2971 8184 3018 8180 3017 8207

$$

JOHNSON

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, 11:33 AM EDT	Tornado Warning	JAX	Duval	27 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

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.