Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 39, NWS Charleston, SC

April 5, 2017Jasper County, South Carolina; Bryan County, Bulloch County, Effingham County, Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Apr 5, 2017, 6:05 PM EDT for Jasper County, South Carolina; Bryan County, Bulloch County, Effingham County, Georgia. It was in force for 55 min. 5 reports 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 5, 2017, 6:05 PM EDT (22:05 UTC)
Expired
Apr 5, 2017, 7:00 PM EDT
In force
55 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Bryan County, GA, Bulloch County, GA, Effingham County, GA, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 24 km from the middle of the area, began a volume at 22:08 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

TimeReportWhereRemark
Apr 5, 6:10 PM EDTHAIL 0.834 Nw Springfield, GAHAIL LASTED ABOUT 3- 4 MINUTES. LOCATION IS GA-21.
Apr 5, 6:10 PM EDTHAIL 0.884 Nw Springfield, GAHAIL LASTED ABOUT 3- 4 MINUTES. LOCATION IS GA-21.
Apr 5, 6:13 PM EDTHAIL 0.25Guyton, GA
Apr 5, 6:14 PM EDTHAIL 0.75Pembroke, GA
Apr 5, 6:31 PM EDTHAIL 0.754 N Stillwell, GATRAINED SPOTTER REPORTED PENNY SIZE HAIL IN THE CLYO AND STILLWELL AREAS.

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.

IssuedProductOfficeLasted
Apr 5, 12:54 PM EDTTornado Watch PDSSPC10 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 10.1 hours before the alert went out and 121 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-pSkew-T log-p diagram, Charleston AFB, SC at 12:00Z on 2017-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 626 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2017-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
626 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

419 
WUUS52 KCHS 052205
SVRCHS
GAC029-031-103-SCC053-052300-
/O.NEW.KCHS.SV.W.0039.170405T2205Z-170405T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
605 PM EDT WED APR 5 2017

The National Weather Service in Charleston has issued a

* Severe Thunderstorm Warning for portions of...
  Bryan County in southeastern Georgia...
  Bulloch County in southeastern Georgia...
  Effingham County in southeastern Georgia...
  Jasper County in southeastern South Carolina...

* Until 700 PM EDT

* At 605 PM EDT, a severe thunderstorm was located near Springfield,
  moving northeast at 40 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...
  Ridgeland, Springfield, Pembroke, Bay, Jasper, Rincon, Port
  Wentworth and Hardeeville.

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.

Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so.

&&

LAT...LON 3247 8151 3268 8096 3266 8095 3265 8096
      3264 8095 3237 8086 3219 8130 3213 8168
TIME...MOT...LOC 2205Z 245DEG 34KT 3241 8142 

HAIL...1.00IN
WIND...60MPH
 
$$
3 follow-up statements
540 
WWUS52 KCHS 052225
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
625 PM EDT WED APR 5 2017

GAC029-031-103-SCC053-052300-
/O.CON.KCHS.SV.W.0039.000000T0000Z-170405T2300Z/
Bryan GA-Bulloch GA-Effingham GA-Jasper SC-
625 PM EDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR BRYAN...BULLOCH...EFFINGHAM AND JASPER COUNTIES...

At 624 PM EDT, a severe thunderstorm was located 11 miles northeast
of Springfield, moving east at 45 mph.

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

SOURCE...Radar indicated. At 610 PM EDT a trained spotter reported 
         nickel sized hail north of Springfield.

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

Locations impacted include...
Ridgeland, Springfield, Jasper, Rincon, Port Wentworth, Hardeeville,
Guyton and Grahamville.

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.

Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so.

&&

A tornado watch remains in effect until 800 PM EDT for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3249 8145 3268 8096 3266 8095 3265 8096
      3264 8095 3237 8086 3219 8130 3215 8159
TIME...MOT...LOC 2224Z 248DEG 38KT 3248 8117 

HAIL...1.00IN
WIND...60MPH
 
$$
870 
WWUS52 KCHS 052241
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
641 PM EDT WED APR 5 2017

GAC029-031-052250-
/O.CAN.KCHS.SV.W.0039.000000T0000Z-170405T2300Z/
Bryan GA-Bulloch GA-
641 PM EDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR BRYAN AND BULLOCH COUNTIES IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area therefore the warning has been cancelled.

A tornado watch remains in effect until 800 PM EDT for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3240 8126 3252 8116 3268 8096 3266 8095
      3265 8096 3264 8095 3237 8086 3219 8130
      3221 8141 3232 8140
TIME...MOT...LOC 2240Z 245DEG 34KT 3255 8100 

$$

GAC103-SCC053-052300-
/O.CON.KCHS.SV.W.0039.000000T0000Z-170405T2300Z/
Effingham GA-Jasper SC-
641 PM EDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM EDT
FOR EFFINGHAM AND JASPER COUNTIES...

At 640 PM EDT, a severe thunderstorm was located near Ridgeland,
moving northeast at 40 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...
Ridgeland, Springfield, Jasper, Rincon, Port Wentworth, Hardeeville,
Guyton and Grahamville.

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.

Report damage directly to the Charleston National Weather Service at
1-888-383-2024 when it is safe to do so.

&&

A tornado watch remains in effect until 800 PM EDT for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3240 8126 3252 8116 3268 8096 3266 8095
      3265 8096 3264 8095 3237 8086 3219 8130
      3221 8141 3232 8140
TIME...MOT...LOC 2240Z 245DEG 34KT 3255 8100 

HAIL...1.00IN
WIND...60MPH
 
$$
771 
WWUS52 KCHS 052259
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
659 PM EDT WED APR 5 2017

GAC103-SCC053-052309-
/O.EXP.KCHS.SV.W.0039.000000T0000Z-170405T2300Z/
Effingham GA-Jasper SC-
659 PM EDT WED APR 5 2017

...THE SEVERE THUNDERSTORM WARNING FOR EFFINGHAM AND JASPER COUNTIES
WILL EXPIRE AT 700 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 800 PM EDT for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3240 8126 3252 8116 3268 8096 3266 8095
      3265 8096 3264 8095 3237 8086 3219 8130
      3221 8141 3232 8140
TIME...MOT...LOC 2259Z 245DEG 34KT 3268 8085 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 3:37 AM EDTGale WatchCHS11 hr
Apr 5, 3:37 AM EDTSmall Craft AdvisoryCHS24 hr
Apr 5, 2:44 PM EDTWind AdvisoryCHSAllendale, Berkeley, Colleton, Dorchester, Hampton29 hr
Apr 5, 2:46 PM EDTSevere Thunderstorm WarningCHSAllendale, Colleton, Dorchester, Hampton59 min
Apr 5, 2:49 PM EDTGale WarningCHS37 hr
Apr 5, 3:11 PM EDTSpecial Weather StatementCHSHampton34 min
Apr 5, 3:28 PM EDTSevere Thunderstorm WarningCHSColleton, Hampton42 min
Apr 5, 3:38 PM EDTTornado WarningCHSBerkeley, Dorchester37 min
Apr 5, 4:19 PM EDTSpecial Weather StatementCHSBerkeley26 min
Apr 5, 5:27 PM EDTSevere Thunderstorm WarningCHSHampton63 min
Apr 5, 5:54 PM EDTSpecial Weather StatementCHSHampton36 min
Apr 5, 6:47 PM EDTSevere Thunderstorm WarningCHSBeaufort, Colleton, Hampton44 min
Apr 5, 7:23 PM EDTSevere Thunderstorm WarningCHSCharleston, Colleton, Dorchester67 min
Apr 5, 7:34 PM EDTSpecial Weather StatementCHSBeaufort26 min
Apr 5, 7:39 PM EDTSpecial Marine WarningCHS2 hr
Apr 5, 7:42 PM EDTSpecial Marine WarningCHS2 hr
Apr 5, 7:51 PM EDTSpecial Weather StatementCHSCharleston39 min
Apr 5, 7:56 PM EDTSevere Thunderstorm WarningCHSBerkeley, Charleston64 min
Apr 5, 4:33 PM EDTSevere Thunderstorm WarningCHSBulloch, Candler, Jenkins, Screven57 min
Apr 5, 4:50 PM EDTTornado WarningCHSBulloch, Candler, Jenkins, Screven40 min
Apr 5, 4:56 PM EDTSpecial Weather StatementCHSTattnall34 min
Apr 5, 5:19 PM EDTSevere Thunderstorm WarningCHSBryan, Bulloch, Candler, Evans, Tattnall56 min
Apr 5, 5:56 PM EDTSpecial Weather StatementCHSEffingham34 min
Apr 5, 6:21 PM EDTTornado WarningCHSBulloch, Candler, Evans, Tattnall39 min
Apr 5, 6:32 PM EDTTornado WarningCHSEvans, Tattnall43 min
Apr 5, 7:06 PM EDTSpecial Weather StatementCHSEvans24 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017Severe Thunderstorm Warnings in South Carolina, 2017Every severe thunderstorm warning in 2017

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.