Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 5, NWS Charleston, SC

January 21, 20175 counties in South Carolina; 8 counties in Georgia

NWS Charleston, SC issued this severe thunderstorm warning at Jan 21, 2017, 3:06 PM EST for 5 counties in South Carolina; 8 counties in Georgia. It was in force for 54 min. 6 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
Jan 21, 2017, 3:06 PM EST (20:06 UTC)
Expired
Jan 21, 2017, 4:00 PM EST
In force
54 min
Issued by
NWS Charleston, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Bryan County, GA, Bulloch County, GA, Effingham County, GA, Evans County, GA, Liberty County, GA, Long County, GA, Screven County, GA, Tattnall County, GA, Allendale County, SC, Beaufort County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 29 km from the middle of the area, began a volume at 20:06 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
Jan 21, 3:16 PM ESTTSTM WND DMG1 S Scotia, SCTREE REPORTED DOWN ON US-321 JUST SOUTH OF SCOTIA. TIME IS ESTIMATED BASED ON RADAR.
Jan 21, 3:20 PM ESTTSTM WND DMG2 Ene Furman, SCHAMPTON COUNTY EMERGENCY MANAGEMENT REPORTED SEVERAL TREES DOWN ALONG MCKENZIE TRAIL NEAR FURMAN.
Jan 21, 3:27 PM ESTTSTM WND DMG5 Wnw Grays, SCHAMPTON COUNTY EMERGENCY MANAGEMENT REPORTED SEVERAL TREES DOWN ON JOHN PENN ROAD NEAR CYPRESS CREEK ROAD. THERE WAS ALSO DAMAGE TO AN OLD HOME IN THIS AREA. POSSIBLE TORNADO.
Jan 21, 3:31 PM ESTTSTM WND DMG2 Sse Grays, SCTREE REPORTED DOWN ON GRAYS HWY. TIME ESTIMATED BASED ON RADAR.
Jan 21, 3:34 PM ESTTSTM WND DMG2 Sw Hinesville, GAWARNING POINT REPORTED A PORTION OF A COMMERCIAL STRUCTURE ROOF CAVED IN NEAR THE INTERSECTION OF WEEPING WILLOW DR AND VETERANS PARKWAY. TIME ESTIMATED BASED ON RADAR.
Jan 21, 3:49 PM ESTTSTM WND DMG6 E Islandton, SCTREE REPORTED DOWN AT THE INTERSECTION OF ENOCH ROAD AND HUDSON MILL ROAD. TIME ESTIMATED BASED ON RADAR.

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
Jan 21, 1:51 PM ESTTornado WatchSPC4 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.1 hours before the alert went out and 129 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 2017-01-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 138 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2017-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939587897117Sfc1 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
138 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
581 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
37 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

394 
WUUS52 KCHS 212006
SVRCHS
GAC029-031-103-109-179-183-251-267-SCC005-013-029-049-053-212100-
/O.NEW.KCHS.SV.W.0005.170121T2006Z-170121T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Charleston SC
306 PM EST SAT JAN 21 2017

The National Weather Service in Charleston has issued a

* Severe Thunderstorm Warning for portions of...
  Screven County in southeastern Georgia...
  Bryan County in southeastern Georgia...
  Liberty County in southeastern Georgia...
  Bulloch County in southeastern Georgia...
  Evans County in southeastern Georgia...
  Effingham County in southeastern Georgia...
  Long County in southeastern Georgia...
  Tattnall County in southeastern Georgia...
  Beaufort County in southeastern South Carolina...
  Jasper County in southeastern South Carolina...
  Hampton County in southeastern South Carolina...
  Colleton County in southeastern South Carolina...
  Allendale County in southeastern South Carolina...

* Until 400 PM EST

* At 304 PM EST, severe thunderstorms were located along a line
  extending from 9 miles west of Allendale to 12 miles northwest of
  Springfield to 14 miles northwest of Ludowici, moving east at 65
  mph.

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

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Hinesville, Ridgeland, Allendale, Springfield, Hampton, Pembroke,
  Ludowici and Yemassee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can 
develop quickly from severe thunderstorms. If you spot a tornado, 
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.

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 700 PM EST for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3187 8211 3252 8160 3300 8163 3304 8156
      3310 8161 3316 8154 3311 8137 3312 8120
      3303 8108 3310 8095 3306 8090 3313 8089
      3317 8079 3275 8074 3251 8085 3230 8108
      3210 8139 3157 8169 3179 8195
TIME...MOT...LOC 2004Z 266DEG 58KT 3303 8147 3253 8144 3184 8193 

HAIL...0.75IN
WIND...60MPH
 
$$
2 follow-up statements
316 
WWUS52 KCHS 212031
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
331 PM EST SAT JAN 21 2017

GAC031-109-251-267-212040-
/O.CAN.KCHS.SV.W.0005.000000T0000Z-170121T2100Z/
Screven GA-Evans GA-Bulloch GA-Tattnall GA-
331 PM EST SAT JAN 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR SCREVEN...EVANS...BULLOCH AND
TATTNALL COUNTIES IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. therefore the warning has been cancelled.

A tornado watch remains in effect until 700 PM EST for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3261 8124 3316 8154 3311 8137 3312 8120
      3303 8108 3310 8095 3306 8090 3313 8089
      3317 8079 3275 8074 3251 8085 3230 8108
      3210 8139 3157 8169 3179 8194 3206 8173
      3224 8141
TIME...MOT...LOC 2030Z 266DEG 58KT 3306 8100 3256 8097 3187 8146 

$$

GAC029-103-179-183-SCC005-013-029-049-053-212100-
/O.CON.KCHS.SV.W.0005.000000T0000Z-170121T2100Z/
Bryan GA-Liberty GA-Effingham GA-Long GA-Beaufort SC-Hampton SC-
Colleton SC-Allendale SC-Jasper SC-
331 PM EST SAT JAN 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EST
FOR BRYAN...LIBERTY...EFFINGHAM...LONG...BEAUFORT...HAMPTON...
COLLETON...ALLENDALE AND JASPER COUNTIES...

At 330 PM EST, severe thunderstorms were located along a line
extending from 14 miles northeast of Hampton to near Ridgeland to 7
miles east of Hinesville, moving east at 65 mph.

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

SOURCE...Radar indicated. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Hinesville, Ridgeland, Allendale, Springfield, Hampton, Pembroke,
Ludowici and Yemassee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A tornado watch remains in effect for the warned area. Tornadoes can 
develop quickly from severe thunderstorms. If you spot a tornado 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.

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 700 PM EST for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3261 8124 3316 8154 3311 8137 3312 8120
      3303 8108 3310 8095 3306 8090 3313 8089
      3317 8079 3275 8074 3251 8085 3230 8108
      3210 8139 3157 8169 3179 8194 3206 8173
      3224 8141
TIME...MOT...LOC 2030Z 266DEG 58KT 3306 8100 3256 8097 3187 8146 

HAIL...0.75IN
WIND...60MPH
 
$$
054 
WWUS52 KCHS 212058
SVSCHS

Severe Weather Statement
National Weather Service Charleston SC
358 PM EST SAT JAN 21 2017

GAC029-103-179-183-SCC005-013-029-049-053-212107-
/O.EXP.KCHS.SV.W.0005.000000T0000Z-170121T2100Z/
Bryan GA-Liberty GA-Effingham GA-Long GA-Beaufort SC-Hampton SC-
Colleton SC-Allendale SC-Jasper SC-
358 PM EST SAT JAN 21 2017

...THE SEVERE THUNDERSTORM WARNING FOR BRYAN...LIBERTY...EFFINGHAM...
LONG...BEAUFORT...HAMPTON...COLLETON...ALLENDALE AND JASPER COUNTIES
WILL EXPIRE AT 400 PM EST...
    
The storms which prompted the warning have moved out of all areas 
except Colleton County. Therefore the warning will be allowed to 
expire.

A tornado watch remains in effect until 700 PM EST for southeastern
Georgia...and southeastern South Carolina.

LAT...LON 3261 8124 3316 8154 3311 8137 3312 8120
      3303 8108 3310 8095 3306 8090 3313 8089
      3317 8079 3275 8074 3251 8085 3230 8108
      3210 8139 3157 8169 3179 8194 3206 8173
      3224 8141
TIME...MOT...LOC 2057Z 266DEG 58KT 3309 8053 3259 8050 3190 8099 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 3:27 AM ESTSmall Craft AdvisoryCHS3 days
Jan 21, 2:58 PM ESTTornado WarningCHSAllendale32 min
Jan 21, 3:16 PM ESTTornado WarningCHSHampton, Jasper29 min
Jan 21, 3:38 PM ESTSevere Thunderstorm WarningCHSBeaufort, Jasper67 min
Jan 21, 3:56 PM ESTSevere Thunderstorm WarningCHSBeaufort, Berkeley, Charleston, Colleton, Dorchester, Jasper49 min
Jan 21, 4:22 PM ESTSpecial Marine WarningCHS83 min
Jan 21, 4:33 PM ESTGale WatchCHS11 hr
Jan 21, 5:04 PM ESTSpecial Weather StatementCHSBerkeley26 min
Jan 21, 5:17 PM ESTSpecial Marine WarningCHS58 min
Jan 21, 5:33 PM ESTSpecial Marine WarningCHS117 min
Jan 21, 2:13 PM ESTSevere Thunderstorm WarningCHSBulloch, Candler, Evans, Jenkins, Screven, Tattnall62 min
Jan 21, 2:21 PM ESTTornado WarningCHSJenkins, Screven24 min
Jan 21, 2:44 PM ESTTornado WarningCHSLong, Tattnall31 min
Jan 21, 4:00 PM ESTSpecial Weather StatementCHSMcIntosh30 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.