Alert archive / Florida / Tornado Warnings in 2001

Tornado Warning 18, NWS Jacksonville, FL

June 11, 2001Nassau County, Florida; Charlton County, Georgia

NWS Jacksonville, FL issued this tornado warning at Jun 11, 2001, 4:50 PM EDT for Nassau County, Florida; Charlton County, Georgia. It was in force for 40 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: Jun 11, 2001, 4:50 PM EDT (20:50 UTC)
Expired: Jun 11, 2001, 5:30 PM EDT
In force: 40 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Nassau County, FL, Charlton County, GA

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 8.8 hours before the alert went out and 33 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: 856 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 777 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KJAX 112051
TORJAX

FLC089-GAC049-112130-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
450 PM EDT MON JUN 11 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN NASSAU COUNTY IN NORTHEAST FLORIDA
  CHARLTON COUNTY IN SOUTHEAST GEORGIA
  THIS INCLUDES FOLKSTON...

* UNTIL 530 PM EDT

* AT 439 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 12 MILES SOUTHWEST OF FOLKSTON...OR ABOUT 12
  MILES SOUTHEAST OF STEVEN FOSTER STATE PARK...MOVING NORTHEAST AT
  15 MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 530 PM EDT...
  FOLKSTON AND HOMELAND...

VERY LARGE HAIL IS POSSIBLE WITH THE PARENT THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

INTENSE LIGHTNING IS OCCURRING WITH THE PARENT STORM. IF OUTDOORS...
STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE.

REPORT SEVERE WEATHER OR DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY
OR YOUR COUNTY EMERGENCY MANAGEMENT...OR YOU CAN CALL THE NATIONAL
WEATHER SERVICE DIRECTLY AT 904-741-4370 TO REPORT SEVERE WEATHER.


$$

CARROLL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 2:44 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval	46 min
Jun 11, 2:57 PM EDT	Tornado Warning	JAX	Clay, Duval	48 min
Jun 11, 3:38 PM EDT	Severe Thunderstorm Warning	JAX	Duval, Nassau	52 min
Jun 11, 4:32 PM EDT	Severe Thunderstorm Warning	JAX	Flagler	28 min
Jun 11, 5:07 PM EDT	Severe Thunderstorm Warning	JAX	Putnam	38 min
Jun 11, 5:18 PM EDT	Severe Thunderstorm Warning	JAX	Saint Johns	42 min

Nearby

Tornado Warnings in Florida, 2001 Tornado Warnings in Georgia, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.