Alert archive / South Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Columbia, SC

August 6, 2018Bamberg County, South Carolina

NWS Columbia, SC issued this special weather statement at Aug 6, 2018, 4:02 PM EDT for Bamberg County, South Carolina. It was in force for 28 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: Aug 6, 2018, 4:02 PM EDT (20:02 UTC)
Expired: Aug 6, 2018, 4:30 PM EDT
In force: 28 min
Issued by: NWS Columbia, SC

County Bamberg County, SC

The radar

The Charleston,SC radar (KCLX), 60 km from the middle of the area, began a volume at 20:05 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.0 hours before the alert went out and 133 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: 932 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

975 
WWUS82 KCAE 062002
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
402 PM EDT MON AUG 6 2018
 
GAZ077-SCZ035-036-041-062030-
Burke GA-Orangeburg SC-Barnwell SC-Bamberg SC-
402 PM EDT MON AUG 6 2018

...Strong Thunderstorms Will Impact Portions of southeastern Burke...
south central Orangeburg...southeastern Barnwell and Bamberg Counties
Until 430 PM EDT....

At 402 PM EDT...National Weather Service doppler radar indicated
strong thunderstorms along a line extending from near Bamberg to
Sardis, moving east at 20 mph.

  HAZARD...gusty winds 40 to 50 mph, excessive cloud to ground 
           lightning and localized minor flooding.

  IMPACT...expect minor damage to tree limbs and blowing around of 
           light, unsecured objects. All outdoor activities should 
           cease. Move indoors immediately. Localized, minor 
           flooding of low lying and poor drainage areas is also 
           possible.

Some locations in the path of these storms include...
Barnwell, Bamberg, Denmark, Branchville, Sardis, Ehrhardt, Hilda,
Rowesville, Olar, Kline, Girard and Govan.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is occurring with these storms, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Move indoors immediately.  Excessive cloud to ground lightning is
occurring with these storms. If you can hear thunder, you are close
enough to be struck by lightning.

These storms may intensify. Monitor NOAA Weather Radio, local radio
and television stations for additional information and possible
warnings from the National Weather Service.

&&

LAT...LON 3295 8182 3295 8189 3298 8190 3315 8169
      3338 8097 3337 8075 3328 8060 3313 8088
      3305 8111 3312 8119 3311 8136 3314 8148
      3316 8154 3310 8162 3304 8156 3291 8176
TIME...MOT...LOC 2002Z 290DEG 19KT 3328 8099 3300 8177 

$$

RC

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 1:52 PM EDT	Special Weather Statement	CAE	Calhoun	38 min
Aug 6, 2:18 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Orangeburg	27 min
Aug 6, 2:29 PM EDT	Special Weather Statement	CAE	Richland	46 min
Aug 6, 2:42 PM EDT	Special Weather Statement	CAE	Richland	48 min
Aug 6, 2:49 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell, Orangeburg	26 min
Aug 6, 2:56 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	34 min
Aug 6, 3:03 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Richland	27 min
Aug 6, 3:25 PM EDT	Special Weather Statement	CAE	Bamberg, Barnwell	35 min
Aug 6, 3:43 PM EDT	Special Weather Statement	CAE	Calhoun, Clarendon, Richland, Sumter	47 min
Aug 6, 4:15 PM EDT	Areal Flood Advisory	CAE	Lancaster	2 hr
Aug 6, 5:36 PM EDT	Areal Flood Advisory	CAE	Lancaster	114 min
Aug 6, 7:05 PM EDT	Special Weather Statement	CAE	Fairfield	25 min
Aug 6, 7:53 PM EDT	Special Weather Statement	CAE	Saluda	52 min
Aug 6, 2:05 PM EDT	Special Weather Statement	CAE	Richmond	25 min
Aug 6, 2:44 PM EDT	Special Weather Statement	CAE	Burke	31 min

Nearby

Special Weather Statements in South Carolina, 2018 Every special weather statement in 2018

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.