Alert archive / South Carolina / Special Weather Statements in 2017

Special Weather Statement, NWS Columbia, SC

July 9, 2017Orangeburg County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 9, 2017, 6:26 PM EDT for Orangeburg County, South Carolina. It was in force for 34 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: Jul 9, 2017, 6:26 PM EDT (22:26 UTC)
Expired: Jul 9, 2017, 7:00 PM EDT
In force: 34 min
Issued by: NWS Columbia, SC

County Orangeburg County, SC

The radar

The Columbia radar (KCAE), 89 km from the middle of the area, began a volume at 22:30 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, 10.4 hours before the alert went out and 67 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: 191 J/kg
Mixed-layer CIN: -119 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 9, 4:47 PM EDT, 1 hour 39 minutes earlier.

Area forecast discussion, Jul 9, 4:47 PM EDT, 1 hour 39 minutes before

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Hazardous weather outlook, Jul 9, 4:25 AM EDT, 14 hours 1 minute before

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In the hours before

Special weather statement, Jul 9, 5:43 PM EDT, 43 minutes before

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Local storm report, Jul 9, 6:05 PM EDT, 21 minutes before

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Special weather statement, Jul 9, 6:26 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 8:52 PM EDT	Areal Flood Advisory	CAE	Bamberg, Barnwell, Calhoun, Clarendon, Orangeburg	113 min
Jul 8, 8:55 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Sumter	24 min
Jul 8, 9:16 PM EDT	Special Weather Statement	CAE	Dorchester	29 min
Jul 8, 9:22 PM EDT	Special Weather Statement	CAE	Aiken	23 min
Jul 9, 5:29 PM EDT	Severe Thunderstorm Warning	CAE	Bamberg	46 min
Jul 9, 5:43 PM EDT	Special Weather Statement	CAE	Aiken	32 min
Jul 9, 7:14 PM EDT	Special Weather Statement	CAE	Calhoun	31 min
Jul 9, 3:51 PM EDT	Areal Flood Advisory	CAE	Burke, Richmond	114 min
Jul 9, 4:42 PM EDT	Areal Flood Advisory	CAE	Richmond	2 hr

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.