Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 41, NWS Jacksonville, FL

April 24, 2021Glynn County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 24, 2021, 2:15 PM EDT for Glynn County, Georgia. It was in force for 15 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: Apr 24, 2021, 2:15 PM EDT (18:15 UTC)
Expired: Apr 24, 2021, 2:30 PM EDT
In force: 15 min
Issued by: NWS Jacksonville, FL
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County Glynn County, GA

The radar

The Jacksonville radar (KJAX), 84 km from the middle of the area, began a volume at 18:15 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
Apr 24, 2:30 PM EDT	TSTM WND GST 44	2 S Saint Simons, GA	ASOS STATION KSSI BRUNSWICK MEASURED A PEAK WIND GUST OF 44 MPH.

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

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, 6.3 hours before the alert went out and 82 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.

101 
WUUS52 KJAX 241815
SVRJAX
GAC127-241830-
/O.NEW.KJAX.SV.W.0041.210424T1815Z-210424T1830Z/

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

The National Weather Service in Jacksonville has issued a

* Severe Thunderstorm Warning for...
  Southeastern Glynn County in southeastern Georgia...

* Until 230 PM EDT.

* At 215 PM EDT, a severe thunderstorm was located over St. Simons
  Island, moving east at 50 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...
  Brunswick, St. Simons Island, Dock Junction, Country Club Estates,
  Jekyll Island and Sea Island.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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.

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

&&

LAT...LON 3116 8128 3110 8137 3106 8138 3105 8148
      3123 8153 3129 8134 3128 8132 3128 8127
TIME...MOT...LOC 1815Z 256DEG 45KT 3116 8141 

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

BOOTHE

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, 11:54 AM EDT	Severe Thunderstorm Warning	JAX	Atkinson	21 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, 2:32 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.