Alert archive / Florida / Tornado Warnings in 2001

Tornado Warning 24, NWS Jacksonville, FL

June 11, 2001Columbia County, Hamilton County, Florida

NWS Jacksonville, FL issued this tornado warning at Jun 11, 2001, 11:07 PM EDT for Columbia County, Hamilton County, Florida. It was in force for 38 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, 11:07 PM EDT (03:07 UTC)
Expired: Jun 11, 2001, 11:45 PM EDT
In force: 38 min
Issued by: NWS Jacksonville, FL
Area: Whole counties

Counties Columbia County, FL, Hamilton County, FL

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 11, 7:15 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 3.1 hours before the alert went out and 105 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: 483 J/kg
Mixed-layer CIN: -66 J/kg
Mixed-layer LCL: 869 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 3.0

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KJAX 120307
TORJAX
FLC023-047-120345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1107 PM EDT MON JUN 11 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN COLUMBIA COUNTY IN NORTHERN FLORIDA
  SOUTHEASTERN HAMILTON COUNTY IN NORTHERN FLORIDA

* UNTIL 1145 PM EDT

* AT 1057 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 2 MILES EAST OF WHITE SPRINGS...OR ABOUT 11
  MILES NORTHWEST OF LAKE CITY...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 1145 PM EDT...
  SUWANNEE VALLEY AND WHITE SPRINGS...

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.

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 9:04 PM EDT	Tornado Warning	JAX	Union	26 min
Jun 12, 2:04 AM EDT	Tornado Warning	JAX	Hamilton	41 min
Jun 12, 3:41 AM EDT	Severe Thunderstorm Warning	JAX	Hamilton	49 min
Jun 12, 4:05 AM EDT	Tornado Warning	JAX	Hamilton, Suwannee	40 min
Jun 12, 6:23 AM EDT	Tornado Warning	JAX	Columbia, Hamilton	52 min
Jun 12, 12:12 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Duval	48 min
Jun 12, 12:37 PM EDT	Severe Thunderstorm Warning	JAX	Clay, Saint Johns	38 min
Jun 12, 12:54 PM EDT	Tornado Warning	JAX	Duval	51 min

Nearby

Tornado Warnings in Florida, 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.