Alert archive / Georgia / Tornado Warnings in 2021

Tornado Warning 4, NWS Charleston, SC

July 7, 2021Screven County, Georgia

NWS Charleston, SC issued this tornado warning at Jul 7, 2021, 11:36 PM EDT for Screven County, Georgia. It was in force for 24 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: Jul 7, 2021, 11:36 PM EDT (03:36 UTC)
Expired: Jul 8, 2021, 12:00 AM EDT
In force: 24 min
Issued by: NWS Charleston, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Screven County, GA

The radar

The Charleston,SC radar (KCLX), 53 km from the middle of the area, began a volume at 03:34 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
Jul 7, 7:25 PM EDT	Tornado Watch	SPC	11 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 3.6 hours before the alert went out and 152 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: 1185 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

923 
WFUS52 KCHS 080336
TORCHS
GAC251-080400-
/O.NEW.KCHS.TO.W.0004.210708T0336Z-210708T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Charleston SC
1136 PM EDT Wed Jul 7 2021

The National Weather Service in Charleston has issued a

* Tornado Warning for portions of...
  Screven County in southeastern Georgia...

* Until midnight EDT.
    
* At 1136 PM EDT, a severe thunderstorm capable of producing a
  tornado was located over Hunters, moving northwest at 30 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* Locations impacted include...
  Sylvania, Captolo, Woodcliff, Altman and Hunters. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes from tropical storms or hurricanes can form and move very
quickly. TAKE COVER IMMEDIATELY! If you wait until you hear a tornado
it could be too late. Take action now to immediately protect
yourself.

&&

LAT...LON 3270 8146 3260 8155 3268 8185 3288 8172
TIME...MOT...LOC 0336Z 127DEG 26KT 3268 8155 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

SPR

2 follow-up statements

524 
WWUS52 KCHS 080348
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
1148 PM EDT Wed Jul 7 2021

GAC251-080400-
/O.CON.KCHS.TO.W.0004.000000T0000Z-210708T0400Z/
Screven GA-
1148 PM EDT Wed Jul 7 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR SCREVEN
COUNTY...
    
At 1148 PM EDT, a severe thunderstorm capable of producing a tornado
was located over Sylvania, moving northwest at 35 mph.

HAZARD...Tornado.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Sylvania, Woodcliff and Altman. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Tornadoes from tropical storms or hurricanes can form and move very
quickly. TAKE COVER IMMEDIATELY! If you wait until you hear a tornado
it could be too late. Take action now to immediately protect
yourself.

&&

LAT...LON 3277 8158 3268 8165 3271 8183 3288 8172
TIME...MOT...LOC 0348Z 129DEG 32KT 3276 8166 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

SPR

138 
WWUS52 KCHS 080356
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
1156 PM EDT Wed Jul 7 2021

GAC251-080406-
/O.EXP.KCHS.TO.W.0004.000000T0000Z-210708T0400Z/
Screven GA-
1156 PM EDT Wed Jul 7 2021

...THE TORNADO WARNING FOR PORTIONS OF SCREVEN COUNTY WILL EXPIRE AT
MIDNIGHT EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.

LAT...LON 3277 8158 3268 8165 3271 8183 3288 8172
TIME...MOT...LOC 0356Z 127DEG 26KT 3279 8171 

$$

SPR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 9:23 PM EDT	Areal Flood Advisory	CHS	Bryan, Chatham, Effingham	82 min
Jul 7, 10:39 PM EDT	Areal Flood Advisory	CHS	Chatham, Effingham	81 min

Nearby

Tornado Warnings in Georgia, 2021 Every tornado warning in 2021 Tornadoes 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.