Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 36, NWS Jacksonville, FL

April 24, 2021Atkinson County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 24, 2021, 11:54 AM EDT for Atkinson County, Georgia. It was in force for 21 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, 11:54 AM EDT (15:54 UTC)
Expired: Apr 24, 2021, 12:15 PM EDT
In force: 21 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

County Atkinson County, GA

The radar

The Moody AFB radar (KVAX), 55 km from the middle of the area, began a volume at 15:53 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
Apr 24, 10:35 AM EDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Jacksonville, FL (KJAX), launched 12:00Z, 3.9 hours before the alert went out and 134 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: 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.

794 
WUUS52 KJAX 241554
SVRJAX
GAC003-241615-
/O.NEW.KJAX.SV.W.0036.210424T1554Z-210424T1615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Jacksonville FL
1154 AM EDT Sat Apr 24 2021

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  East central Atkinson County in southeastern Georgia...

* Until 1215 PM EDT.

* At 1154 AM EDT, a severe thunderstorm was located 10 miles east of
  Pearson, moving east at 30 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Pearson.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for southeastern
Georgia.

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.

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3137 8281 3137 8274 3136 8263 3127 8263
      3127 8264 3129 8266 3128 8270 3129 8289
TIME...MOT...LOC 1554Z 268DEG 25KT 3133 8268 

HAIL...1.00IN
WIND...70MPH
 
$$

SANDRIK

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 10:57 AM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Clinch	48 min
Apr 24, 11:15 AM EDT	Severe Thunderstorm Warning	JAX	Coffee	45 min
Apr 24, 11:35 AM EDT	Severe Thunderstorm Warning	JAX	Bacon, Ware	40 min
Apr 24, 12:04 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Brantley, Pierce, Wayne	41 min
Apr 24, 12:08 PM EDT	Tornado Warning	JAX	Bacon	22 min
Apr 24, 12:18 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Bacon, Clinch, Pierce, Ware	31 min
Apr 24, 12:36 PM EDT	Severe Thunderstorm Warning	JAX	Wayne	24 min
Apr 24, 12:40 PM EDT	Special Weather Statement	JAX	Clinch	50 min
Apr 24, 12:47 PM EDT	Special Weather Statement	JAX	Clinch, Pierce, Ware, Wayne	28 min
Apr 24, 1:20 PM EDT	Special Weather Statement	JAX	Brantley, Clinch, Ware	25 min
Apr 24, 1:46 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	44 min
Apr 24, 1:50 PM EDT	Special Weather Statement	JAX	Camden, Charlton, Glynn	40 min
Apr 24, 2:15 PM EDT	Severe Thunderstorm Warning	JAX	Glynn	15 min
Apr 24, 2:32 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	43 min
Apr 24, 2:36 PM EDT	Tornado Warning	JAX	Echols	24 min
Apr 24, 2:56 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols	49 min
Apr 24, 3:03 PM EDT	Tornado Warning	JAX	Clinch, Echols	27 min
Apr 24, 3:30 PM EDT	Severe Thunderstorm Warning	JAX	Clinch, Echols, Ware	45 min
Apr 24, 3:48 PM EDT	Special Weather Statement	JAX	Camden	27 min
Apr 24, 3:57 PM EDT	Severe Thunderstorm Warning	JAX	Charlton, Ware	48 min
Apr 24, 4:10 PM EDT	Severe Thunderstorm Warning	JAX	Charlton	28 min
Apr 24, 4:18 PM EDT	Severe Thunderstorm Warning	JAX	Camden	42 min
Apr 24, 5:40 PM EDT	Special Weather Statement	JAX	Coffee, Jeff Davis	35 min
Apr 24, 6:18 PM EDT	Special Weather Statement	JAX	Appling, Bacon, Coffee, Jeff Davis, Wayne	87 min
Apr 24, 6:39 PM EDT	Severe Thunderstorm Warning	JAX	Atkinson, Coffee	36 min
Apr 24, 7:12 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Atkinson, Bacon, Coffee, Pierce, Ware	33 min
Apr 24, 7:40 PM EDT	Severe Thunderstorm Warning	JAX	Appling, Bacon, Brantley, Pierce, Ware, Wayne	35 min
Apr 24, 7:57 PM EDT	Special Weather Statement	JAX	Coffee, Jeff Davis	48 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.