Alert archive / South Carolina / Special Weather Statements in 2018

Special Weather Statement, NWS Columbia, SC

August 6, 2018Bamberg County, Barnwell County, South Carolina; Burke County, Georgia

NWS Columbia, SC issued this special weather statement at Aug 6, 2018, 3:25 PM EDT for Bamberg County, Barnwell County, South Carolina; Burke County, Georgia. It was in force for 35 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, 3:25 PM EDT (19:25 UTC)
Expired: Aug 6, 2018, 4:00 PM EDT
In force: 35 min
Issued by: NWS Columbia, SC

Counties Burke County, GA, Bamberg County, SC, Barnwell County, SC

The radar

The Charleston,SC radar (KCLX), 68 km from the middle of the area, began a volume at 19:25 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, 7.4 hours before the alert went out and 149 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.

528 
WWUS82 KCAE 061925
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
325 PM EDT MON AUG 6 2018
 
GAZ077-SCZ035-041-062000-
Burke GA-Barnwell SC-Bamberg SC-
325 PM EDT MON AUG 6 2018

...Strong Thunderstorms Will Impact Portions of Burke...Barnwell and
Bamberg Counties Until 400 PM EDT....

At 324 PM EDT...National Weather Service doppler radar indicated
strong thunderstorms along a line extending from near Denmark to near
Herndon, moving south at 30 mph.

  HAZARD...strong winds 45 to 55 mph, pea sized hail, excessive 
           cloud to ground lightning and localized minor flooding.

  IMPACT...expect minor damage to tree limbs and blowing around of 
           light, unsecured objects. Minor hail damage to plants, 
           trees and crops is possible. Damage to windshields is 
           unlikely. 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...
Waynesboro, Barnwell, Bamberg, Denmark, Savannah River Site,
Williston, Blackville, Sardis, Midville, Ehrhardt, Hilda, Snelling,
Olar, Kline, Elko, 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 3283 8231 3299 8228 3323 8182 3320 8175
      3348 8130 3334 8100 3315 8085 3307 8090
      3310 8094 3303 8108 3312 8119 3316 8154
      3310 8162 3304 8156 3305 8155 3304 8155
      3291 8176 3295 8186 3292 8208 3281 8215
TIME...MOT...LOC 1924Z 351DEG 24KT 3337 8111 3289 8218 

$$

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, 3:43 PM EDT	Special Weather Statement	CAE	Calhoun, Clarendon, Richland, Sumter	47 min
Aug 6, 4:02 PM EDT	Special Weather Statement	CAE	Bamberg	28 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 Special Weather Statements in Georgia, 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.