Alert archive / Florida / Tornado Warnings in 2001

Tornado Warning 14, NWS Jacksonville, FL

March 29, 2001Duval County, Florida

NWS Jacksonville, FL issued this tornado warning at Mar 29, 2001, 11:27 AM EST for Duval County, Florida. It was in force for 33 min. No storm report in the archive falls 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.

The facts

Issued: Mar 29, 2001, 11:27 AM EST (16:27 UTC)
Expired: Mar 29, 2001, 12:00 PM EST
In force: 33 min
Issued by: NWS Jacksonville, FL
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Duval County, FL

The radar

The Jacksonville radar (KJAX), 32 km from the middle of the area, began a volume at 16:26 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 29, 9:15 AM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 4.5 hours before the alert went out and 34 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: 267 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 717 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 58 m²/s²
0-3 km storm-relative helicity: 105 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KJAX 291629
TORJAX
FLC031-291700-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1127 AM EST THU MAR 29 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN DUVAL COUNTY IN NORTHEAST FLORIDA
  THIS INCLUDES THE SOUTHSIDE AND JACKSONVILLE BEACH...

* UNTIL NOON EST

* AT 1121 AM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A  
  A POSSIBLE TORNADO ON THE SOUTHSIDE OF JACKSONVILLE...MOVING EAST
  AT 40 MPH.

HAIL UP TO ONE AND A HALF INCHES IN DIAMETER HAS BEEN REPORTED WITH 
THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A 
GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.

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 STORM HAS PASSED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 PM EST
THURSDAY AFTERNOON FOR NORTHEASTERN FLORIDA.

LAT...LON 3032 8155 3013 8156 3014 8145 3034 8141

$$

LETRO

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 29, 9:30 AM EST	Severe Thunderstorm Warning	JAX	Gilchrist	45 min
Mar 29, 9:51 AM EST	Severe Thunderstorm Warning	JAX	Baker, Bradford, Columbia, Union	54 min
Mar 29, 9:51 AM EST	Severe Thunderstorm Warning	JAX	Alachua, Marion	54 min
Mar 29, 10:27 AM EST	Severe Thunderstorm Warning	JAX	Clay, Marion, Putnam	63 min
Mar 29, 10:41 AM EST	Severe Thunderstorm Warning	JAX	Duval, Nassau	79 min
Mar 29, 10:44 AM EST	Tornado Warning	JAX	Clay, Putnam	46 min
Mar 29, 10:53 AM EST	Tornado Warning	JAX	Duval	37 min
Mar 29, 11:00 AM EST	Severe Thunderstorm Warning	JAX	Flagler, Saint Johns	45 min
Mar 29, 11:08 AM EST	Tornado Warning	JAX	Saint Johns	52 min
Mar 29, 11:13 AM EST	Tornado Warning	JAX	Nassau	47 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; radar from the NEXRAD Level II archive.