Alert archive / Georgia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 24, NWS Columbia, SC

April 3, 2017Columbia County, Lincoln County, McDuffie County, Georgia; McCormick County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 3, 2017, 2:47 PM EDT for Columbia County, Lincoln County, McDuffie County, Georgia; McCormick County, South Carolina. It was in force for 58 min. 3 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 3, 2017, 2:47 PM EDT (18:47 UTC)
Expired: Apr 3, 2017, 3:45 PM EDT
In force: 58 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Columbia County, GA, Lincoln County, GA, McDuffie County, GA, McCormick County, SC

The radar

The Columbia radar (KCAE), 112 km from the middle of the area, began a volume at 18:50 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 3, 3:15 PM EDT	TSTM WND DMG	9 S Lincolnton, GA	REPORTED MORE THAN 20 TREES DOWN ALONG THOMSON HIGHWY NEAR THE AMITY COMMUNITY AND LAKE THURMOND. REPORTED 6 TO 8 TREES SNAPPED AT 15 TOP 20 FEET ABOVE THE GROUND. TREES ACROSS THE HIGHWAY. BOTH SOFTWOOD AND HARDWOOD TREES DAMAGED. .
Apr 3, 3:30 PM EDT	TSTM WND DMG	12 Se Lincolnton, GA	* 2 INJ * DOCK OVERTURNED AND SEVERAL BOATS DAMAGED AT POINTS WEST MARINA. 2 INJURED WERE ON THE DOCK AS IT OVERTURNED. INJURIES WERE MINOR. .
Apr 3, 3:30 PM EDT	TSTM WND GST 49	11 Nnw Evans, GA	OBSERVATION EQUIPMENT AT LAKE THURMOND DAM RECORDED A WIND GUST OF 49 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 3, 2:07 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.8 hours before the alert went out and 208 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: 26 J/kg
Mixed-layer CIN: -350 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 317 m²/s²
0-3 km storm-relative helicity: 392 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

743 
WUUS52 KCAE 031847
SVRCAE
GAC073-181-189-SCC065-031945-
/O.NEW.KCAE.SV.W.0024.170403T1847Z-170403T1945Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
247 PM EDT MON APR 3 2017

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Columbia County in east central Georgia...
  McDuffie County in east central Georgia...
  Lincoln County in east central Georgia...
  McCormick County in central South Carolina...

* Until 345 PM EDT

* At 247 PM EDT, severe thunderstorms were located along a line
  extending from near Lake Secession to 8 miles southwest of
  Warrenton, 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...
  Grovetown, Evans, Thomson, Martinez, McCormick, Harlem, Lincolnton,
  Dearing, Parksville, Plum Branch, Mount Carmel, Modoc, Willington
  and Clarks Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Prepare immediately for large hail and damaging winds. People outside
should move immediately to shelter inside a strong building. Stay
away from windows.

&&

A tornado watch remains in effect until 900 PM EDT for east central
Georgia...and central South Carolina.

LAT...LON 3365 8249 3397 8264 3396 8257 3402 8259
      3408 8248 3406 8233 3397 8230 3402 8224
      3397 8218 3398 8205 3396 8204 3393 8216
      3383 8212 3372 8218 3363 8210 3360 8211
      3354 8203 3331 8236 3336 8255 3359 8264
TIME...MOT...LOC 1847Z 247DEG 43KT 3425 8255 3336 8279 

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

JAQ

2 follow-up statements

689 
WWUS52 KCAE 031908
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
308 PM EDT MON APR 3 2017

GAC073-181-189-SCC065-031945-
/O.CON.KCAE.SV.W.0024.000000T0000Z-170403T1945Z/
Columbia GA-McDuffie GA-Lincoln GA-McCormick SC-
308 PM EDT MON APR 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR COLUMBIA...MCDUFFIE...LINCOLN AND MCCORMICK COUNTIES...

At 307 PM EDT, severe thunderstorms were located along a line
extending from near Abbeville to near Mitchell, moving northeast at
65 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Grovetown, Evans, Thomson, Martinez, McCormick, Harlem, Lincolnton,
Dearing, Parksville, Plum Branch, Mount Carmel, Modoc, Willington and
Clarks Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Intense thunderstorm lines can produce brief tornadoes and 
widespread significant wind damage. Although a tornado is not 
immediately likely, it is best to move to an interior room on the 
lowest floor of a building. These storms may cause serious injury 
and significant property damage.

&&

A tornado watch remains in effect until 900 PM EDT for east central
Georgia...and central South Carolina.

LAT...LON 3365 8249 3397 8264 3396 8257 3402 8259
      3408 8248 3406 8233 3397 8230 3402 8224
      3397 8218 3398 8205 3396 8204 3393 8216
      3383 8212 3372 8218 3363 8210 3360 8211
      3354 8203 3331 8236 3336 8255 3359 8264
TIME...MOT...LOC 1907Z 220DEG 57KT 3411 8242 3322 8266 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

JAQ

464 
WWUS52 KCAE 031937
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
337 PM EDT MON APR 3 2017

GAC073-181-189-SCC065-031945-
/O.CON.KCAE.SV.W.0024.000000T0000Z-170403T1945Z/
Columbia GA-McDuffie GA-Lincoln GA-McCormick SC-
337 PM EDT MON APR 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR COLUMBIA...EASTERN MCDUFFIE...SOUTHEASTERN LINCOLN AND MCCORMICK
COUNTIES...

At 336 PM EDT, severe thunderstorms were located along a line
extending from 10 miles southwest of Ninety Six Historic Site to near
Grovetown, moving east at 50 mph.

HAZARD...70 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Grovetown, Evans, Martinez, McCormick, Harlem, Dearing, Parksville,
Plum Branch, Modoc and Clarks Hill.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.


&&

A tornado watch remains in effect until 900 PM EDT for east central
Georgia...and central South Carolina.

LAT...LON 3406 8238 3397 8230 3402 8224 3397 8218
      3398 8205 3396 8204 3393 8216 3383 8212
      3372 8218 3363 8210 3360 8211 3354 8203
      3331 8236 3333 8245
TIME...MOT...LOC 1936Z 268DEG 42KT 3401 8210 3337 8223 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

JAQ

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 3:52 AM EDT	Lake Wind Advisory	CAE	Burke, Columbia, Lincoln, McDuffie, Richmond	20 hr
Apr 3, 12:06 PM EDT	Special Weather Statement	CAE	Burke, Columbia, Lincoln, Richmond	24 min
Apr 3, 2:34 PM EDT	Special Weather Statement	CAE	Burke	26 min
Apr 3, 2:41 PM EDT	Tornado Warning	CAE	Burke	34 min
Apr 3, 3:07 PM EDT	Severe Thunderstorm Warning	CAE	Burke, Richmond	53 min
Apr 3, 3:17 PM EDT	Severe Thunderstorm Warning	CAE	Richmond	58 min
Apr 3, 3:31 PM EDT	Tornado Warning	CAE	Lincoln	29 min
Apr 3, 3:42 PM EDT	Tornado Warning	CAE	Burke	48 min
Apr 3, 3:57 PM EDT	Severe Thunderstorm Warning	CAE	Burke	33 min
Apr 3, 1:42 PM EDT	Special Weather Statement	CAE	Aiken	33 min
Apr 3, 2:20 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	48 hr
Apr 3, 2:27 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	2 hr
Apr 3, 3:28 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield	62 min
Apr 3, 3:42 PM EDT	Special Weather Statement	CAE	Kershaw	33 min
Apr 3, 4:10 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Kershaw, Lancaster	65 min
Apr 3, 4:12 PM EDT	Areal Flood Advisory	CAE	Lexington, Richland	3 hr
Apr 3, 4:15 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Lexington, Newberry, Richland, Saluda	45 min
Apr 3, 4:18 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Calhoun, Orangeburg	42 min
Apr 3, 4:32 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	28 min
Apr 3, 4:33 PM EDT	Tornado Warning	CAE	Lexington	26 min
Apr 3, 4:51 PM EDT	Flash Flood Warning	CAE	Richland	114 min
Apr 3, 4:51 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lee, Sumter	54 min
Apr 3, 4:55 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	50 min
Apr 3, 4:57 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg, Calhoun, Clarendon, Orangeburg	48 min
Apr 3, 5:01 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Kershaw, Richland	33 min
Apr 3, 5:11 PM EDT	Tornado Warning	CAE	Calhoun, Sumter	34 min
Apr 3, 5:45 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield	15 min
Apr 3, 5:46 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Lee, Orangeburg, Sumter	29 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2017 Severe Thunderstorm Warnings in South Carolina, 2017 Every 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.