Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 33, NWS Jacksonville, FL

July 7, 2021Alachua County, Columbia County, Union County, Florida

NWS Jacksonville, FL issued this tornado warning at Jul 7, 2021, 6:40 AM EDT for Alachua County, Columbia County, Union County, Florida. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 7, 2021, 6:40 AM EDT (10:40 UTC)
Expired: Jul 7, 2021, 7:15 AM EDT
In force: 35 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Alachua County, FL, Columbia County, FL, Union County, FL

The radar

The Jacksonville radar (KJAX), 103 km from the middle of the area, began a volume at 10:42 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
Jul 6, 10:37 PM EDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 10.7 hours before the alert went out and 104 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: 1886 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 813 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

544 
WFUS52 KJAX 071040
TORJAX
FLC001-023-125-071115-
/O.NEW.KJAX.TO.W.0033.210707T1040Z-210707T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
640 AM EDT Wed Jul 7 2021

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  Northwestern Alachua County in northern Florida...
  Southwestern Union County in northern Florida...
  Southwestern Columbia County in northern Florida...

* Until 715 AM EDT.
    
* At 640 AM EDT, a vigorous shower capable of producing a tornado 
  was located over Upland Pines, or near Worthington Spring, moving 
  northwest at 40 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  Providence around 650 AM EDT.
  Columbia around 710 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a 
sturdy building. Avoid windows. If you are outdoors, in a mobile 
home, or in a vehicle, move to the closest substantial shelter and 
protect yourself from flying debris.

&&

LAT...LON 3014 8262 2994 8243 2988 8251 3001 8279
      3002 8279
TIME...MOT...LOC 1040Z 136DEG 26KT 2993 8252 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

BOOTHE

2 follow-up statements

950 
WWUS52 KJAX 071047
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
647 AM EDT Wed Jul 7 2021

FLC001-071056-
/O.CAN.KJAX.TO.W.0033.000000T0000Z-210707T1115Z/
Alachua FL-
647 AM EDT Wed Jul 7 2021

...THE TORNADO WARNING FOR NORTHWESTERN ALACHUA COUNTY IS
CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 100 PM EDT for northern
Florida.

LAT...LON 3014 8262 2998 8247 2993 8255 3001 8279
      3002 8279
TIME...MOT...LOC 1046Z 136DEG 26KT 2997 8256 

$$

FLC023-125-071115-
/O.CON.KJAX.TO.W.0033.000000T0000Z-210707T1115Z/
Union FL-Columbia FL-
647 AM EDT Wed Jul 7 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM EDT FOR
SOUTHWESTERN UNION AND SOUTHWESTERN COLUMBIA COUNTIES...
    
At 646 AM EDT, a severe thunderstorm capable of producing a tornado
was located over Providence, or 8 miles west of Worthington Spring,
moving northwest at 40 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Columbia around 710 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a 
sturdy building. Avoid windows. If you are outdoors, in a mobile 
home, or in a vehicle, move to the closest substantial shelter and 
protect yourself from flying debris.

&&

LAT...LON 3014 8262 2998 8247 2993 8255 3001 8279
      3002 8279
TIME...MOT...LOC 1046Z 136DEG 26KT 2997 8256 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

BOOTHE

494 
WWUS52 KJAX 071059
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
659 AM EDT Wed Jul 7 2021

FLC023-125-071115-
/O.CON.KJAX.TO.W.0033.000000T0000Z-210707T1115Z/
Union FL-Columbia FL-
659 AM EDT Wed Jul 7 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 715 AM EDT FOR WESTERN
UNION AND SOUTHWESTERN COLUMBIA COUNTIES...
    
At 657 AM EDT, a vigorous shower capable of producing a tornado was 
located near Columbia, or 9 miles northeast of Ichetucknee Spring. 
This shower is moving northwest at 30 mph, nearing the Interstate 75 
corridor.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  Columbia around 710 AM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to an interior room on the lowest floor of a 
sturdy building. Avoid windows. If you are outdoors, in a mobile 
home, or in a vehicle, move to the closest substantial shelter and 
protect yourself from flying debris.

&&

LAT...LON 3012 8265 3002 8254 2997 8259 3003 8277
      3010 8268
TIME...MOT...LOC 1057Z 136DEG 26KT 3003 8263 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

BOOTHE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 9:53 PM EDT	River Flood Warning	JAX	Alachua, Columbia	13 days
Jul 6, 9:54 PM EDT	River Flood Warning	JAX	Columbia, Hamilton, Suwannee	48 hr
Jul 6, 9:54 PM EDT	River Flood Warning	JAX	Hamilton, Suwannee	71 hr
Jul 6, 11:03 PM EDT	Rip Current Statement	JAX	Duval, Flagler, Nassau	28 hr
Jul 7, 4:02 AM EDT	Tornado Warning	JAX	Alachua, Marion	28 min
Jul 7, 4:29 AM EDT	Tornado Warning	JAX	Alachua, Marion	31 min
Jul 7, 4:33 AM EDT	Tornado Warning	JAX	Marion	27 min
Jul 7, 5:05 AM EDT	Special Weather Statement	JAX	Alachua, Marion	40 min
Jul 7, 5:41 AM EDT	Special Weather Statement	JAX	Alachua, Gilchrist	49 min
Jul 7, 6:02 AM EDT	Tornado Warning	JAX	Alachua, Bradford, Union	28 min
Jul 7, 6:33 AM EDT	Special Weather Statement	JAX	Alachua, Suwannee, Union	57 min
Jul 7, 7:02 AM EDT	Tornado Warning	JAX	Columbia, Suwannee	28 min
Jul 7, 7:23 AM EDT	Special Weather Statement	JAX	Baker, Bradford, Clay, Columbia, Hamilton, Union	67 min
Jul 7, 8:31 AM EDT	Special Weather Statement	JAX	Baker, Hamilton	44 min
Jul 7, 8:39 AM EDT	Tornado Warning	JAX	Baker, Columbia	11 min
Jul 7, 9:59 AM EDT	Special Weather Statement	JAX	Nassau	46 min
Jul 7, 12:00 PM EDT	Areal Flood Warning	JAX	Alachua, Bradford, Columbia, Gilchrist, Hamilton, Suwannee and 1 more	3 hr
Jul 7, 1:38 PM EDT	Areal Flood Warning	JAX	Alachua, Baker, Bradford, Clay, Columbia, Duval and 4 more	3 hr
Jul 7, 2:45 PM EDT	Special Weather Statement	JAX	Flagler, Saint Johns	60 min
Jul 7, 2:47 PM EDT	Special Weather Statement	JAX	Baker, Clay, Duval, Nassau	58 min
Jul 7, 2:49 PM EDT	Areal Flood Warning	JAX	Hamilton, Suwannee	116 min
Jul 7, 2:54 PM EDT	Areal Flood Warning	JAX	Alachua, Bradford	111 min
Jul 7, 3:24 PM EDT	River Flood Warning	JAX	Columbia, Gilchrist, Suwannee	93 days
Jul 7, 3:31 PM EDT	Areal Flood Warning	JAX	Baker, Clay, Duval, Nassau	2 hr
Jul 7, 3:45 PM EDT	Special Weather Statement	JAX	Clay, Duval, Nassau, Saint Johns	60 min
Jul 7, 4:32 PM EDT	Tornado Warning	JAX	Duval, Saint Johns	28 min
Jul 7, 4:45 PM EDT	Special Weather Statement	JAX	Duval, Nassau	60 min
Jul 7, 4:54 PM EDT	Tornado Warning Tornado observed	JAX	Duval, Nassau	36 min
Jul 7, 5:15 PM EDT	Areal Flood Warning	JAX	Duval, Nassau, Saint Johns	2 hr
Jul 7, 6:42 PM EDT	Special Marine Warning	JAX		93 min
Jul 7, 7:18 PM EDT	Areal Flood Warning	JAX	Nassau	117 min

Nearby

Tornado Warnings in Florida, 2021 Every tornado warning in 2021 Tornadoes in 2021

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.