Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Jacksonville, FL

June 12, 2021Baker County, Columbia County, Hamilton County, Florida; 4 counties in Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2021, 3:22 PM EDT for Baker County, Columbia County, Hamilton County, Florida; 4 counties in Georgia. It was in force for 53 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
Jun 12, 2021, 3:22 PM EDT (19:22 UTC)
Expired
Jun 12, 2021, 4:15 PM EDT
In force
53 min
Issued by
NWS Jacksonville, FL
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Baker County, FL, Columbia County, FL, Hamilton County, FL, Charlton County, GA, Clinch County, GA, Echols County, GA, Ware County, GA

The radar

The Moody AFB radar (KVAX), 46 km from the middle of the area, began a volume at 19:22 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 nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 7.4 hours before the alert went out and 87 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 2021-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 467 joules per kilogram.LCLLFCEL10008507005003002001001 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 2021-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939Sfc1 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
467 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1010 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
64 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted.

877 
WUUS52 KJAX 121922
SVRJAX
FLC003-023-047-GAC049-065-101-299-122015-
/O.NEW.KJAX.SV.W.0083.210612T1922Z-210612T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
322 PM EDT Sat Jun 12 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Northwestern Baker County in northeastern Florida...
  Northeastern Columbia County in northern Florida...
  Hamilton County in northern Florida...
  Echols County in southeastern Georgia...
  Southeastern Ware County in southeastern Georgia...
  Southern Clinch County in southeastern Georgia...
  West central Charlton County in southeastern Georgia...

* Until 415 PM EDT.

* At 322 PM EDT, severe thunderstorms were located along a line
  extending from 10 miles southeast of Du Pont to near Jennings,
  moving east at 25 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Jasper, Jennings, Fargo, Stephen Foster State Park, Statenville,
  Needmore and Belmont.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3081 8219 3030 8252 3055 8321 3097 8280
TIME...MOT...LOC 1922Z 289DEG 24KT 3086 8279 3064 8306 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

HESS
2 follow-up statements
103 
WWUS52 KJAX 121935
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
335 PM EDT Sat Jun 12 2021

FLC003-023-047-GAC049-065-101-299-122015-
/O.CON.KJAX.SV.W.0083.000000T0000Z-210612T2015Z/
Baker FL-Columbia FL-Hamilton FL-Echols GA-Ware GA-Clinch GA-
Charlton GA-
335 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN BAKER...NORTHEASTERN COLUMBIA...NORTHEASTERN
HAMILTON...SOUTHEASTERN ECHOLS...SOUTHEASTERN WARE...SOUTHEASTERN
CLINCH AND WEST CENTRAL CHARLTON COUNTIES...

At 335 PM EDT, severe thunderstorms were located along a line
extending from 11 miles north of Needmore to near Statenville, moving
east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Jasper, Fargo, Stephen Foster State Park, Belmont and Needmore. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Intense thunderstorm lines can produce brief tornadoes and 
widespread significant wind damage. Although a tornado is not 
immediately likely, it is best to move to an interior room on the 
lowest floor of a building. These storms may cause serious injury 
and significant property damage.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3081 8219 3030 8252 3053 8307 3094 8270
TIME...MOT...LOC 1935Z 289DEG 24KT 3084 8273 3062 8300 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

HESS
879 
WWUS52 KJAX 121953
SVSJAX

Severe Weather Statement
National Weather Service Jacksonville FL
353 PM EDT Sat Jun 12 2021

FLC003-023-047-GAC049-065-101-299-122015-
/O.CON.KJAX.SV.W.0083.000000T0000Z-210612T2015Z/
Baker FL-Columbia FL-Hamilton FL-Echols GA-Ware GA-Clinch GA-
Charlton GA-
353 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN BAKER...NORTHEASTERN COLUMBIA...NORTHEASTERN
HAMILTON...SOUTHEASTERN ECHOLS...SOUTHEASTERN WARE...SOUTHEASTERN
CLINCH AND WEST CENTRAL CHARLTON COUNTIES...

At 353 PM EDT, severe thunderstorms were located along a line
extending from 9 miles north of Needmore to 6 miles northeast of
Jasper, moving east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Jasper, Fargo, Stephen Foster State Park, Belmont and Needmore. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3081 8219 3030 8252 3050 8301 3091 8257
TIME...MOT...LOC 1953Z 289DEG 24KT 3081 8263 3059 8291 

TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
 
$$

HESS

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 12:51 PM EDTSpecial Weather StatementJAXGilchrist24 min
Jun 12, 1:22 PM EDTSpecial Weather StatementJAXAlachua, Bradford, Clay, Gilchrist, Putnam, Union38 min
Jun 12, 1:50 PM EDTSpecial Weather StatementJAXClay, Putnam40 min
Jun 12, 1:59 PM EDTSpecial Weather StatementJAXSuwannee46 min
Jun 12, 2:11 PM EDTSpecial Weather StatementJAXBradford, Clay49 min
Jun 12, 2:15 PM EDTSpecial Marine WarningJAX90 min
Jun 12, 2:46 PM EDTSpecial Weather StatementJAXHamilton44 min
Jun 12, 2:50 PM EDTSpecial Weather StatementJAXClay, Saint Johns40 min
Jun 12, 2:51 PM EDTSpecial Marine WarningJAX84 min
Jun 12, 2:53 PM EDTSpecial Weather StatementJAXColumbia, Union37 min
Jun 12, 2:59 PM EDTSevere Thunderstorm WarningJAXDuval14 min
Jun 12, 3:25 PM EDTSpecial Weather StatementJAXNassau50 min
Jun 12, 3:27 PM EDTSpecial Weather StatementJAXSuwannee48 min
Jun 12, 3:33 PM EDTSpecial Marine WarningJAX87 min
Jun 12, 4:10 PM EDTSevere Thunderstorm WarningJAXBaker, Columbia, Hamilton, Nassau, Union25 min
Jun 12, 4:15 PM EDTSpecial Weather StatementJAXNassau45 min
Jun 12, 5:26 PM EDTSpecial Marine WarningJAX64 min
Jun 12, 2:02 PM EDTSpecial Weather StatementJAXGlynn43 min
Jun 12, 3:46 PM EDTSpecial Weather StatementJAXWayne44 min
Jun 12, 4:27 PM EDTSpecial Weather StatementJAXWayne48 min
Jun 12, 4:37 PM EDTSpecial Weather StatementJAXCamden38 min
Jun 12, 5:00 PM EDTSpecial Weather StatementJAXBrantley30 min
Jun 12, 5:10 PM EDTSpecial Weather StatementJAXBrantley, Pierce50 min
Jun 12, 5:20 PM EDTSevere Thunderstorm WarningJAXBrantley25 min
Jun 12, 5:22 PM EDTSpecial Weather StatementJAXAtkinson53 min
Jun 12, 5:37 PM EDTSpecial Weather StatementJAXJeff Davis38 min
Jun 12, 5:53 PM EDTSpecial Weather StatementJAXBrantley, Pierce52 min
Jun 12, 5:56 PM EDTSpecial Weather StatementJAXAtkinson49 min
Jun 12, 6:44 PM EDTSpecial Weather StatementJAXAtkinson46 min
Jun 12, 7:02 PM EDTSpecial Weather StatementJAXCoffee28 min
Jun 12, 7:12 PM EDTSpecial Weather StatementJAXWayne33 min
Jun 12, 7:21 PM EDTSevere Thunderstorm WarningJAXAtkinson, Clinch, Coffee39 min
Jun 12, 7:31 PM EDTSpecial Weather StatementJAXWayne44 min
Jun 12, 7:42 PM EDTSpecial Weather StatementJAXAppling, Jeff Davis48 min
Jun 12, 7:45 PM EDTSpecial Weather StatementJAXBacon30 min
Jun 12, 7:57 PM EDTSevere Thunderstorm WarningJAXAppling, Bacon, Coffee, Jeff Davis33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021Severe Thunderstorm Warnings in Florida, 2021Every severe thunderstorm warning 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.