Alert archive / Georgia / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 17, NWS Charleston, SC

April 24, 20214 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Apr 24, 2021, 9:52 PM EDT for 4 counties in Georgia. It was in force for 38 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, 9:52 PM EDT (01:52 UTC)
Expired: Apr 24, 2021, 10:30 PM EDT
In force: 38 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Bryan County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA

The radar

The Charleston,SC radar (KCLX), 120 km from the middle of the area, began a volume at 01:53 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.

What was reported inside it

Time	Report	Where	Remark
Apr 24, 10:00 PM EDT	TSTM WND DMG	2 Sse Retreat, GA	LIBERTY CO WARNING POINT RELAYED A REPORT OF A TREE DOWN AT 9472 S COASTAL HWY. TIME ESTIMATED FROM REPORT TIME AND RADAR.

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

The nearest sounding before it

Jacksonville, FL (KJAX), launched 00:00Z, 1.9 hours before the alert went out and 128 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: 64 J/kg
Mixed-layer CIN: -157 J/kg
Mixed-layer LCL: 850 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 275 m²/s²
0-3 km storm-relative helicity: 358 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.9

Open this sounding in Storm Lab

The text

As transmitted.

322 
WUUS52 KCHS 250152
SVRCHS
GAC029-179-183-191-250230-
/O.NEW.KCHS.SV.W.0017.210425T0152Z-210425T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
952 PM EDT Sat Apr 24 2021

The National Weather Service in Charleston has issued a

* Severe Thunderstorm Warning for portions of...
  Bryan County in southeastern Georgia...
  Liberty County in southeastern Georgia...
  McIntosh County in southeastern Georgia...
  Long County in southeastern Georgia...

* Until 1030 PM EDT.

* At 952 PM EDT, a severe thunderstorm was located over Tibet, moving
  east at 60 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and powerlines.

* Locations impacted include...
  Tibet, Jones, Riceboro, Harris Neck, St. Catherines Island,
  Eulonia, Valona, South Newport, Cox, Meridian, Sunbury, Townsend,
  Crescent, Halfmoon Landing and Carnigan.

This warning includes I-95 in Georgia between mile markers 52 and 75.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Report damage directly to the Charleston National Weather Service at
888-383-2024 when it is safe to do so.

&&

LAT...LON 3145 8162 3147 8161 3150 8165 3154 8168
      3168 8173 3179 8118 3179 8116 3176 8118
      3174 8116 3171 8116 3171 8113 3173 8111
      3162 8110 3144 8120 3141 8159
TIME...MOT...LOC 0152Z 258DEG 53KT 3161 8162 

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

JRL

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 24, 8:18 PM EDT	Special Weather Statement	CHS	McIntosh	42 min
Apr 24, 8:28 PM EDT	Areal Flood Advisory	CHS	Bryan, Bulloch, Candler, Evans, Tattnall	92 min
Apr 24, 8:59 PM EDT	Areal Flood Advisory	CHS	Bryan, Liberty, Long, McIntosh, Tattnall	61 min
Apr 24, 9:33 PM EDT	Severe Thunderstorm Warning	CHS	Bryan, Liberty, Long	42 min
Apr 24, 10:00 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Liberty, Long, McIntosh	2 hr
Apr 24, 10:26 PM EDT	Special Weather Statement	CHS	Liberty, Long, McIntosh	49 min
Apr 24, 11:56 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Liberty, Long, McIntosh	94 min
Apr 25, 12:22 AM EDT	Special Weather Statement	CHS	McIntosh	23 min
Apr 25, 12:38 AM EDT	Special Weather Statement	CHS	McIntosh	37 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.