Alert archive / Florida / Tornado Warnings in 2021

Tornado Warning 21, NWS Jacksonville, FL

April 24, 2021Columbia County, Hamilton County, Florida; Clinch County, Echols County, Georgia

NWS Jacksonville, FL issued this tornado warning at Apr 24, 2021, 3:03 PM EDT for Columbia County, Hamilton County, Florida; Clinch County, Echols County, Georgia. It was in force for 27 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
Apr 24, 2021, 3:03 PM EDT (19:03 UTC)
Expired
Apr 24, 2021, 3:30 PM EDT
In force
27 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Radar indicated
Hail
2.0 in

Counties Columbia County, FL, Hamilton County, FL, Clinch County, GA, Echols County, GA

The radar

The Moody AFB radar (KVAX), 36 km from the middle of the area, began a volume at 19:04 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
Apr 24, 10:35 AM EDTTornado WatchSPC7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.1 hours before the alert went out and 106 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 2021-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2021-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 180 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
984 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
180 m²/s²
0-3 km storm-relative helicity
276 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WFUS52 KJAX 241903
TORJAX
FLC023-047-GAC065-101-241930-
/O.NEW.KJAX.TO.W.0021.210424T1903Z-210424T1930Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Jacksonville FL
303 PM EDT Sat Apr 24 2021

The National Weather Service in Jacksonville has issued a

* Tornado Warning for...
  North central Columbia County in northern Florida...
  Northeastern Hamilton County in northern Florida...
  Southeastern Echols County in southeastern Georgia...
  South central Clinch County in southeastern Georgia...

* Until 330 PM EDT.
    
* At 302 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 8 miles northeast of Jasper, moving east at 45 mph.

  HAZARD...Tornado and hail up to two inches in diameter.

  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...
  Needmore around 320 PM EDT.
  Fargo around 330 PM 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 3058 8295 3067 8296 3073 8257 3055 8256
TIME...MOT...LOC 1902Z 266DEG 40KT 3062 8290 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BOOTHE
1 follow-up statement
213 
WWUS52 KJAX 241918
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
318 PM EDT Sat Apr 24 2021

FLC023-047-GAC065-101-241930-
/O.CON.KJAX.TO.W.0021.000000T0000Z-210424T1930Z/
Columbia FL-Hamilton FL-Echols GA-Clinch GA-
318 PM EDT Sat Apr 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR NORTH
CENTRAL COLUMBIA...NORTHEASTERN HAMILTON...SOUTHEASTERN ECHOLS AND
SOUTH CENTRAL CLINCH COUNTIES...
    
At 317 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Needmore, or 8 miles southwest of Fargo, moving east
at 45 mph.

HAZARD...Tornado and two inch hail.

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...
  Fargo around 330 PM EDT.

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 3058 8279 3069 8283 3073 8257 3056 8256
TIME...MOT...LOC 1917Z 266DEG 40KT 3063 8270 

TORNADO...RADAR INDICATED
HAIL...2.00IN

$$

BOOTHE

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 24, 1:37 PM EDTSpecial Marine WarningJAX113 min
Apr 24, 2:36 PM EDTTornado WarningJAXHamilton24 min
Apr 24, 2:56 PM EDTSevere Thunderstorm WarningJAXColumbia, Hamilton49 min
Apr 24, 3:14 PM EDTSevere Thunderstorm WarningJAXColumbia, Hamilton46 min
Apr 24, 3:21 PM EDTSpecial Weather StatementJAXDuval24 min
Apr 24, 3:25 PM EDTSpecial Marine WarningJAX79 min
Apr 24, 3:30 PM EDTSevere Thunderstorm WarningJAXBaker, Columbia45 min
Apr 24, 3:40 PM EDTSevere Thunderstorm WarningJAXBaker, Columbia, Hamilton35 min
Apr 24, 3:57 PM EDTSevere Thunderstorm WarningJAXBaker, Nassau48 min
Apr 24, 4:10 PM EDTSevere Thunderstorm WarningJAXBaker, Columbia, Nassau28 min
Apr 24, 4:18 PM EDTSevere Thunderstorm WarningJAXDuval, Nassau42 min
Apr 24, 4:44 PM EDTSpecial Marine WarningJAX46 min
Apr 24, 5:10 PM EDTSpecial Marine WarningJAX35 min
Apr 24, 5:20 PM EDTSpecial Weather StatementJAXDuval25 min
Apr 24, 5:31 PM EDTSpecial Marine WarningJAX59 min
Apr 24, 6:11 PM EDTSpecial Marine WarningJAX64 min
Apr 24, 10:57 AM EDTSevere Thunderstorm WarningJAXAtkinson, Clinch48 min
Apr 24, 11:15 AM EDTSevere Thunderstorm WarningJAXCoffee45 min
Apr 24, 11:35 AM EDTSevere Thunderstorm WarningJAXBacon, Ware40 min
Apr 24, 11:54 AM EDTSevere Thunderstorm WarningJAXAtkinson21 min
Apr 24, 12:04 PM EDTSevere Thunderstorm WarningJAXAppling, Brantley, Pierce, Wayne41 min
Apr 24, 12:08 PM EDTTornado WarningJAXBacon22 min
Apr 24, 12:18 PM EDTSevere Thunderstorm WarningJAXAtkinson, Bacon, Clinch, Pierce, Ware31 min
Apr 24, 12:36 PM EDTSevere Thunderstorm WarningJAXWayne24 min
Apr 24, 12:40 PM EDTSpecial Weather StatementJAXClinch50 min
Apr 24, 12:47 PM EDTSpecial Weather StatementJAXClinch, Pierce, Ware, Wayne28 min
Apr 24, 1:20 PM EDTSpecial Weather StatementJAXBrantley, Clinch, Ware25 min
Apr 24, 1:46 PM EDTSevere Thunderstorm WarningJAXClinch, Echols44 min
Apr 24, 1:50 PM EDTSpecial Weather StatementJAXCamden, Charlton, Glynn40 min
Apr 24, 2:15 PM EDTSevere Thunderstorm WarningJAXGlynn15 min
Apr 24, 2:32 PM EDTSevere Thunderstorm WarningJAXClinch, Echols43 min
Apr 24, 3:48 PM EDTSpecial Weather StatementJAXCamden27 min
Apr 24, 5:40 PM EDTSpecial Weather StatementJAXCoffee, Jeff Davis35 min
Apr 24, 6:18 PM EDTSpecial Weather StatementJAXAppling, Bacon, Coffee, Jeff Davis, Wayne87 min
Apr 24, 6:39 PM EDTSevere Thunderstorm WarningJAXAtkinson, Coffee36 min
Apr 24, 7:12 PM EDTSevere Thunderstorm WarningJAXAppling, Atkinson, Bacon, Coffee, Pierce, Ware33 min
Apr 24, 7:40 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Brantley, Pierce, Ware, Wayne35 min
Apr 24, 7:57 PM EDTSpecial Weather StatementJAXCoffee, Jeff Davis48 min

Nearby

Tornado Warnings in Florida, 2021Tornado Warnings in Georgia, 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.