Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 31, 2021Oconee County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 31, 2021, 11:06 PM EDT for Oconee County, South Carolina. It was in force for 24 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 31, 2021, 11:06 PM EDT (03:06 UTC)
Expired: Aug 31, 2021, 11:30 PM EDT
In force: 24 min
Issued by: NWS Greenville-Spartanburg, SC

County Oconee County, SC

The radar

The Greer radar (KGSP), 55 km from the middle of the area, began a volume at 03:09 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.1 hours before the alert went out and 244 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: 401 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 76 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.7

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Aug 31, 9:48 PM EDT, 1 hour 18 minutes earlier.

Area forecast discussion, Aug 31, 9:48 PM EDT, 1 hour 18 minutes before

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Hazardous weather outlook, Aug 31, 9:36 PM EDT, 1 hour 30 minutes before

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In the hours before

Local storm report, Aug 31, 9:10 PM EDT, 1 hour 56 minutes before

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Local storm report, Aug 31, 9:56 PM EDT, 1 hour 10 minutes before

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Local storm report, Aug 31, 10:04 PM EDT, 1 hour 2 minutes before

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Local storm report, Aug 31, 10:16 PM EDT, 50 minutes before

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Local storm report, Aug 31, 10:26 PM EDT, 40 minutes before

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Special weather statement, Aug 31, 11:06 PM EDT, 0 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 31, 8:09 PM EDT	Special Weather Statement	GSP	Iredell	36 min
Sep 1, 12:36 AM EDT	Areal Flood Advisory	GSP	Jackson	4 hr
Sep 1, 4:12 PM EDT	Special Weather Statement	GSP	Lincoln	33 min
Sep 1, 4:40 PM EDT	Special Weather Statement	GSP	Gaston	35 min
Sep 1, 4:47 PM EDT	Special Weather Statement	GSP	Davie, Rowan	28 min
Sep 1, 5:13 PM EDT	Special Weather Statement	GSP	Mecklenburg	32 min
Sep 1, 5:16 PM EDT	Special Weather Statement	GSP	Rowan	29 min
Sep 1, 5:40 PM EDT	Special Weather Statement	GSP	Cabarrus, Mecklenburg	35 min
Sep 1, 6:12 PM EDT	Special Weather Statement	GSP	Cabarrus	33 min
Sep 1, 6:32 PM EDT	Areal Flood Advisory	GSP	Gaston, Mecklenburg	119 min
Sep 1, 6:46 PM EDT	Special Weather Statement	GSP	Union	29 min
Sep 1, 7:19 PM EDT	Special Weather Statement	GSP	Union	26 min
Aug 31, 11:30 PM EDT	Special Weather Statement	GSP	Pickens	30 min
Sep 1, 5:35 PM EDT	Special Weather Statement	GSP	Union	25 min
Sep 1, 6:01 PM EDT	Special Weather Statement	GSP	Chester	29 min

Nearby

Special Weather Statements in South Carolina, 2021 Every special weather statement in 2021

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.