Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 86, NWS Jacksonville, FL

June 12, 2021Atkinson County, Clinch County, Coffee County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2021, 7:21 PM EDT for Atkinson County, Clinch County, Coffee County, Georgia. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 12, 2021, 7:21 PM EDT (23:21 UTC)
Expired: Jun 12, 2021, 8:00 PM EDT
In force: 39 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Atkinson County, GA, Clinch County, GA, Coffee County, GA

The radar

The Moody AFB radar (KVAX), 54 km from the middle of the area, began a volume at 23:24 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.

What was reported inside it

Time	Report	Where	Remark
Jun 12, 7:37 PM EDT	TSTM WND DMG	Willacoochee, GA	911 CALL CENTER REPORTED A TREE DOWN ALONG NORTH HIGHWAY 135 NEAR US82.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.4 hours before the alert went out and 161 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: 1723 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 555 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

478 
WUUS52 KJAX 122321
SVRJAX
GAC003-065-069-130000-
/O.NEW.KJAX.SV.W.0086.210612T2321Z-210613T0000Z/

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

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Southwestern Coffee County in southeastern Georgia...
  Atkinson County in southeastern Georgia...
  Northwestern Clinch County in southeastern Georgia...

* Until 800 PM EDT.

* At 721 PM EDT, a severe thunderstorm was located 8 miles south of
  Ambrose, moving southeast at 10 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Pearson, Willacoochee and Ambrose. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect for the warned area. Tornadoes can
develop quickly from severe thunderstorms. Although a tornado is not
immediately likely, if one is spotted, act quickly and move to a
place of safety inside a sturdy structure such as a basement or small
interior room.

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

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. This storm may cause serious injury and significant
property damage.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. 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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3147 8314 3147 8312 3151 8308 3156 8306
      3161 8306 3165 8300 3113 8272 3106 8297
      3118 8297 3119 8305 3123 8305 3128 8303
      3131 8306 3134 8307 3136 8310 3139 8311
      3140 8314 3143 8314 3146 8315
TIME...MOT...LOC 2321Z 336DEG 9KT 3147 8301 

HAIL...1.00IN
WIND...60MPH
 
$$

HESS

3 follow-up statements

644 
WWUS52 KJAX 122333
SVSJAX

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

GAC003-065-069-130000-
/O.CON.KJAX.SV.W.0086.000000T0000Z-210613T0000Z/
Coffee GA-Atkinson GA-Clinch GA-
733 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHWESTERN COFFEE...ATKINSON AND NORTHWESTERN CLINCH
COUNTIES...

At 733 PM EDT, a severe thunderstorm was located 7 miles north of
Willacoochee, moving southeast at 10 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pearson and Willacoochee. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3147 8314 3147 8312 3148 8310 3150 8292
      3113 8272 3106 8297 3118 8297 3119 8305
      3123 8305 3128 8303 3131 8306 3134 8307
      3136 8310 3139 8311 3140 8314 3143 8314
      3146 8315
TIME...MOT...LOC 2333Z 336DEG 9KT 3144 8300 

HAIL...1.00IN
WIND...60MPH
 
$$

HESS

793 
WWUS52 KJAX 122347
SVSJAX

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

GAC069-122357-
/O.CAN.KJAX.SV.W.0086.000000T0000Z-210613T0000Z/
Coffee GA-
747 PM EDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN COFFEE COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 3142 8314 3142 8296 3140 8296 3140 8287
      3113 8272 3106 8297 3118 8297 3119 8305
      3123 8305 3128 8303 3131 8306 3134 8307
      3136 8310 3139 8311 3140 8314
TIME...MOT...LOC 2347Z 336DEG 9KT 3141 8298 

$$

GAC003-065-130000-
/O.CON.KJAX.SV.W.0086.000000T0000Z-210613T0000Z/
Atkinson GA-Clinch GA-
747 PM EDT Sat Jun 12 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR ATKINSON AND NORTHWESTERN CLINCH COUNTIES...

At 747 PM EDT, a severe thunderstorm was located near Willacoochee,
moving southeast at 10 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pearson and Willacoochee. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move to a shelter, inside a strong building and away from
windows.

Continuous cloud to ground lightning is occurring with this storm.
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.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 3142 8314 3142 8296 3140 8296 3140 8287
      3113 8272 3106 8297 3118 8297 3119 8305
      3123 8305 3128 8303 3131 8306 3134 8307
      3136 8310 3139 8311 3140 8314
TIME...MOT...LOC 2347Z 336DEG 9KT 3141 8298 

HAIL...1.00IN
WIND...60MPH
 
$$

HESS

203 
WWUS52 KJAX 130000
SVSJAX

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

GAC003-065-130010-
/O.EXP.KJAX.SV.W.0086.000000T0000Z-210613T0000Z/
Atkinson GA-Clinch GA-
800 PM EDT Sat Jun 12 2021

...THE SEVERE THUNDERSTORM WARNING FOR ATKINSON AND NORTHWESTERN
CLINCH COUNTIES HAS EXPIRED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been allowed to expire.  However gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3142 8314 3142 8296 3140 8296 3140 8287
      3113 8272 3106 8297 3118 8297 3119 8305
      3123 8305 3128 8303 3131 8306 3134 8307
      3136 8310 3139 8311 3140 8314
TIME...MOT...LOC 0000Z 336DEG 9KT 3139 8297 

$$

HESS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 2:02 PM EDT	Special Weather Statement	JAX	Glynn	43 min
Jun 12, 2:46 PM EDT	Special Weather Statement	JAX	Echols	44 min
Jun 12, 3:22 PM EDT	Severe Thunderstorm Warning	JAX	Charlton, Clinch, Echols, Ware	53 min
Jun 12, 3:25 PM EDT	Special Weather Statement	JAX	Camden, Charlton	50 min
Jun 12, 3:46 PM EDT	Special Weather Statement	JAX	Wayne	44 min
Jun 12, 4:10 PM EDT	Severe Thunderstorm Warning	JAX	Camden, Charlton, Clinch, Echols, Ware	25 min
Jun 12, 4:27 PM EDT	Special Weather Statement	JAX	Wayne	48 min
Jun 12, 4:37 PM EDT	Special Weather Statement	JAX	Camden	38 min
Jun 12, 5:00 PM EDT	Special Weather Statement	JAX	Brantley	30 min
Jun 12, 5:10 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	50 min
Jun 12, 5:20 PM EDT	Severe Thunderstorm Warning	JAX	Brantley	25 min
Jun 12, 5:22 PM EDT	Special Weather Statement	JAX	Atkinson	53 min
Jun 12, 5:37 PM EDT	Special Weather Statement	JAX	Jeff Davis	38 min
Jun 12, 5:53 PM EDT	Special Weather Statement	JAX	Brantley, Pierce	52 min
Jun 12, 5:56 PM EDT	Special Weather Statement	JAX	Atkinson	49 min
Jun 12, 6:44 PM EDT	Special Weather Statement	JAX	Atkinson	46 min
Jun 12, 7:02 PM EDT	Special Weather Statement	JAX	Coffee	28 min
Jun 12, 7:12 PM EDT	Special Weather Statement	JAX	Wayne	33 min
Jun 12, 7:31 PM EDT	Special Weather Statement	JAX	Wayne	44 min
Jun 12, 7:42 PM EDT	Special Weather Statement	JAX	Appling, Jeff Davis	48 min
Jun 12, 7:45 PM EDT	Special Weather Statement	JAX	Bacon	30 min
Jun 12, 7:57 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Bacon, Coffee, Jeff Davis	33 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.