Alert archive / Florida / Tornado Warnings in 2000

Tornado Warning 41, NWS Jacksonville, FL

July 20, 2000Suwannee County, Florida

NWS Jacksonville, FL issued this tornado warning at Jul 20, 2000, 4:20 PM EDT for Suwannee County, Florida. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 20, 2000, 4:20 PM EDT (20:20 UTC)
Expired: Jul 20, 2000, 4:45 PM EDT
In force: 25 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

County Suwannee County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 8.3 hours before the alert went out and 128 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: 2018 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 1446 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 50 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 202021
TORJAX
FLC121-202045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
420 PM EDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN JACKSONVILLE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN SUWANNEE COUNTY IN NORTHERN FLORIDA

* UNTIL 445 PM EDT

* AT 408 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 4 MILES SOUTHWEST OF HILDRETH...OR ABOUT 6 MILES
  WEST OF ICHETUCKNEE SPRINGS STATE PARK...MOVING SOUTH AT 5 MPH.

* THE TORNADO WILL BE NEAR...
  BRANFORD AND HILDRETH BY 420 PM EDT...

ALSO...HAIL UP TO 2 INCHES IN DIAMETER IS LIKELY WITH THIS STORM. IF 
YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE 
TO A SUBSTANTIAL SHELTER.


$$

CARROLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 2:46 PM EDT	Severe Thunderstorm Warning	JAX	Hamilton	29 min
Jul 20, 3:11 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	49 min
Jul 20, 3:21 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	39 min
Jul 20, 4:07 PM EDT	Severe Thunderstorm Warning	JAX	Suwannee	38 min
Jul 20, 4:12 PM EDT	Severe Thunderstorm Warning	JAX	Alachua, Gilchrist	33 min
Jul 20, 4:31 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	29 min
Jul 20, 4:43 PM EDT	Severe Thunderstorm Warning	JAX	Alachua	47 min
Jul 20, 4:54 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Putnam	51 min
Jul 20, 4:58 PM EDT	Severe Thunderstorm Warning	JAX	Columbia	47 min
Jul 20, 5:21 PM EDT	Severe Thunderstorm Warning	JAX	Baker, Bradford	39 min
Jul 20, 5:45 PM EDT	Severe Thunderstorm Warning	JAX	Putnam	30 min
Jul 20, 5:58 PM EDT	Severe Thunderstorm Warning	JAX	Clay	47 min
Jul 20, 6:03 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	27 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; the sounding from the Mesonet's radiosonde archive.