Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 35, NWS Jacksonville, FL

July 7, 2021Baker County, Columbia County, Florida

NWS Jacksonville, FL issued this tornado warning at Jul 7, 2021, 8:39 AM EDT for Baker County, Columbia County, Florida. It was in force for 11 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, 8:39 AM EDT (12:39 UTC)
Expired
Jul 7, 2021, 8:50 AM EDT
In force
11 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Baker County, FL, Columbia County, FL

The radar

The Jacksonville radar (KJAX), 71 km from the middle of the area, began a volume at 12:43 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.

IssuedProductOfficeLasted
Jul 7, 6:46 AM EDTTornado WatchSPC6 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 0.7 hours before the alert went out and 72 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-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 2021-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1540 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 2021-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1540 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
838 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
144 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

144 
WFUS52 KJAX 071239
TORJAX
FLC003-023-071315-
/O.NEW.KJAX.TO.W.0035.210707T1239Z-210707T1315Z/

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

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  West central Baker County in northeastern Florida...
  Northeastern Columbia County in northern Florida...

* Until 915 AM EDT.
    
* At 838 AM EDT, a vigorous shower capable of producing a tornado 
  was located 9 miles southwest of Taylor, or 17 miles northeast of 
  Lake City, moving northwest at 35 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 tornadic thunderstorm will remain over mainly rural areas of
  west central Baker and northeastern Columbia Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or 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 3033 8234 3030 8243 3043 8262 3053 8245
TIME...MOT...LOC 1238Z 144DEG 27KT 3036 8242 

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

$$

BOOTHE
1 follow-up statement
106 
WWUS52 KJAX 071250
SVSJAX

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

FLC003-023-071259-
/O.CAN.KJAX.TO.W.0035.000000T0000Z-210707T1315Z/
Baker FL-Columbia FL-
850 AM EDT Wed Jul 7 2021

...THE TORNADO WARNING FOR WEST CENTRAL BAKER AND NORTHEASTERN
COLUMBIA COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.

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

LAT...LON 3033 8234 3030 8243 3043 8262 3053 8245
TIME...MOT...LOC 1248Z 144DEG 27KT 3043 8248 

$$

BOOTHE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 9:53 PM EDTRiver Flood WarningJAXAlachua, Columbia13 days
Jul 6, 9:54 PM EDTRiver Flood WarningJAXColumbia, Hamilton, Suwannee48 hr
Jul 6, 9:54 PM EDTRiver Flood WarningJAXHamilton, Suwannee71 hr
Jul 6, 11:03 PM EDTRip Current StatementJAXDuval, Flagler, Nassau28 hr
Jul 7, 4:02 AM EDTTornado WarningJAXAlachua, Marion28 min
Jul 7, 4:29 AM EDTTornado WarningJAXAlachua, Marion31 min
Jul 7, 4:33 AM EDTTornado WarningJAXMarion27 min
Jul 7, 5:05 AM EDTSpecial Weather StatementJAXAlachua, Marion40 min
Jul 7, 5:41 AM EDTSpecial Weather StatementJAXAlachua, Gilchrist49 min
Jul 7, 6:02 AM EDTTornado WarningJAXAlachua, Bradford, Union28 min
Jul 7, 6:33 AM EDTSpecial Weather StatementJAXAlachua, Suwannee, Union57 min
Jul 7, 6:40 AM EDTTornado WarningJAXAlachua, Columbia, Union35 min
Jul 7, 7:02 AM EDTTornado WarningJAXColumbia, Suwannee28 min
Jul 7, 7:23 AM EDTSpecial Weather StatementJAXBaker, Bradford, Clay, Columbia, Hamilton, Union67 min
Jul 7, 8:31 AM EDTSpecial Weather StatementJAXBaker, Hamilton44 min
Jul 7, 9:59 AM EDTSpecial Weather StatementJAXNassau46 min
Jul 7, 12:00 PM EDTAreal Flood WarningJAXAlachua, Bradford, Columbia, Gilchrist, Hamilton, Suwannee and 1 more3 hr
Jul 7, 1:38 PM EDTAreal Flood WarningJAXAlachua, Baker, Bradford, Clay, Columbia, Duval and 4 more3 hr
Jul 7, 2:45 PM EDTSpecial Weather StatementJAXFlagler, Saint Johns60 min
Jul 7, 2:47 PM EDTSpecial Weather StatementJAXBaker, Clay, Duval, Nassau58 min
Jul 7, 2:49 PM EDTAreal Flood WarningJAXHamilton, Suwannee116 min
Jul 7, 2:54 PM EDTAreal Flood WarningJAXAlachua, Bradford111 min
Jul 7, 3:24 PM EDTRiver Flood WarningJAXColumbia, Gilchrist, Suwannee93 days
Jul 7, 3:31 PM EDTAreal Flood WarningJAXBaker, Clay, Duval, Nassau2 hr
Jul 7, 3:45 PM EDTSpecial Weather StatementJAXClay, Duval, Nassau, Saint Johns60 min
Jul 7, 4:32 PM EDTTornado WarningJAXDuval, Saint Johns28 min
Jul 7, 4:45 PM EDTSpecial Weather StatementJAXDuval, Nassau60 min
Jul 7, 4:54 PM EDTTornado Warning Tornado observedJAXDuval, Nassau36 min
Jul 7, 5:15 PM EDTAreal Flood WarningJAXDuval, Nassau, Saint Johns2 hr
Jul 7, 6:42 PM EDTSpecial Marine WarningJAX93 min
Jul 7, 7:18 PM EDTAreal Flood WarningJAXNassau117 min

Nearby

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