Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Columbia, SC

May 4, 2017Bamberg County, South Carolina

NWS Columbia, SC issued this special weather statement at May 4, 2017, 6:08 PM EDT for Bamberg County, South Carolina. It was in force for 37 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: May 4, 2017, 6:08 PM EDT (22:08 UTC)
Expired: May 4, 2017, 6:45 PM EDT
In force: 37 min
Issued by: NWS Columbia, SC

County Bamberg County, SC

The radar

The Charleston,SC radar (KCLX), 62 km from the middle of the area, began a volume at 22:07 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, 10.1 hours before the alert went out and 101 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: 10 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this special weather statement went out at May 4, 5:50 PM EDT, 18 minutes earlier.

Area forecast discussion, May 4, 5:50 PM EDT, 18 minutes before

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Hazardous weather outlook, May 4, 3:39 AM EDT, 14 hours 29 minutes before

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In the hours before

Special weather statement, May 4, 6:08 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Columbia SC
608 PM EDT THU MAY 4 2017

SCZ041-042245-
Bamberg-
608 PM EDT THU MAY 4 2017

...A STRONG THUNDERSTORM WILL AFFECT BAMBERG COUNTy...

At 608 PM EDT, a strong thunderstorm was located near Ulmer, or 11
miles east of Allendale, moving northeast at 30 mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Bamberg, Denmark, Ehrhardt, Olar and Govan.

LAT...LON 3313 8121 3316 8123 3344 8122 3341 8119
      3338 8108 3333 8102 3334 8100 3331 8094
      3324 8085 3321 8084 3318 8080 3312 8089
      3309 8088 3306 8090 3310 8094 3303 8108
TIME...MOT...LOC 2208Z 216DEG 26KT 3306 8111

fwa

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 6:43 PM EDT	Special Weather Statement	CAE	Orangeburg	32 min
May 4, 7:29 PM EDT	Special Weather Statement	CAE	Sumter	46 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.