Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Columbia, SC

February 9, 20175 counties in South Carolina

NWS Columbia, SC issued this special weather statement at Feb 9, 2017, 2:57 AM EST for 5 counties in South Carolina. It was in force for 48 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: Feb 9, 2017, 2:57 AM EST (07:57 UTC)
Expired: Feb 9, 2017, 3:45 AM EST
In force: 48 min
Issued by: NWS Columbia, SC

Counties Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Clarendon County, SC, Orangeburg County, SC

The radar

The Charleston,SC radar (KCLX), 57 km from the middle of the area, began a volume at 07:57 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 00:00Z, 8.0 hours before the alert went out and 123 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1057 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 105 m²/s²
0-3 km storm-relative helicity: 148 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

746 
WWUS82 KCAE 090757
SPSCAE

Special Weather Statement
National Weather Service Columbia SC
257 AM EST THU FEB 9 2017

GAZ077-SCZ027-028-031-035>038-041-090845-
Burke-Orangeburg-Lexington-Barnwell-Calhoun-Clarendon-Bamberg-Sumter-
Richland-
257 AM EST THU FEB 9 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL BURKE...
CALHOUN...CLARENDON...BARNWELL...SOUTHEASTERN LEXINGTON...BAMBERG...
SOUTHWESTERN SUMTER...ORANGEBURG AND SOUTHEASTERN RICHLAND
COUNTIES...

At 256 AM EST, radar indicated strong thunderstorms were located
along a line extending from 10 miles south of Gaston to near
Midville. Movement was east at 60 mph.

Winds gusts up to 45 mph and pea size hail are possible with these 
storms.

Locations impacted include...
Orangeburg, Barnwell, Manning, Bamberg, Denmark, Savannah River Site,
Brookdale, Williston, Blackville, St. Matthews, Holly Hill,
Branchville, Summerton, Sardis, Bowman, Elloree, Santee, North,
Ehrhardt and Springfield.

LAT...LON 3283 8227 3377 8093 3369 8000 3351 8010
      3326 8043 3333 8051 3313 8089 3306 8090
      3310 8094 3303 8108 3312 8119 3316 8154
      3310 8162 3304 8156 3305 8154 3304 8154
      3291 8176 3295 8186 3292 8208 3281 8215
TIME...MOT...LOC 0756Z 276DEG 51KT 3366 8108 3285 8219 

$$

Coleman

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 9, 1:17 AM EST	Special Weather Statement	CAE	Fairfield, Lancaster, Newberry	58 min
Feb 9, 1:38 AM EST	Special Weather Statement	CAE	Aiken, Edgefield	52 min
Feb 9, 2:12 AM EST	Special Weather Statement	CAE	Kershaw, Lee	33 min
Feb 9, 2:19 AM EST	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lee	25 min
Feb 9, 3:08 AM EST	Severe Thunderstorm Warning	CAE	Barnwell	22 min
Feb 9, 3:12 AM EST	Tornado Warning	CAE	Bamberg, Barnwell	33 min

Nearby

Special Weather Statements in South Carolina, 2017 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.