Alert archive / South Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 7, 2020Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 7, 2020, 10:55 PM EDT for Anderson County, South Carolina. It was in force for 50 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 7, 2020, 10:55 PM EDT (02:55 UTC)
Expired: Aug 7, 2020, 11:45 PM EDT
In force: 50 min
Issued by: NWS Greenville-Spartanburg, SC

County Anderson County, SC

The radar

The Greer radar (KGSP), 71 km from the middle of the area, began a volume at 02:57 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.9 hours before the alert went out and 199 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: 581 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1734 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 11 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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Aug 7, 10:32 PM EDT, 23 minutes earlier.

Area forecast discussion, Aug 7, 10:32 PM EDT, 23 minutes before

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Hazardous weather outlook, Aug 7, 6:26 AM EDT, 16 hours 29 minutes before

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In the hours before

Special weather statement, Aug 7, 7:18 PM EDT, 3 hours 37 minutes before

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Special weather statement, Aug 7, 7:28 PM EDT, 3 hours 27 minutes before

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Special weather statement, Aug 7, 7:29 PM EDT, 3 hours 26 minutes before

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Special weather statement, Aug 7, 9:59 PM EDT, 56 minutes before

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Special weather statement, Aug 7, 10:52 PM EDT, 3 minutes before

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Special weather statement, Aug 7, 10:55 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 7, 8:51 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Gaston, Lincoln	39 min
Aug 8, 5:13 PM EDT	Special Weather Statement	GSP	Caldwell	32 min
Aug 8, 6:29 PM EDT	Special Weather Statement	GSP	Polk	31 min
Aug 8, 6:58 PM EDT	Special Weather Statement	GSP	Polk	32 min
Aug 7, 9:59 PM EDT	Special Weather Statement	GSP	Union	31 min
Aug 7, 10:52 PM EDT	Special Weather Statement	GSP	Anderson	38 min
Aug 8, 5:34 PM EDT	Special Weather Statement	GSP	Oconee	26 min
Aug 8, 7:15 PM EDT	Special Weather Statement	GSP	Oconee	30 min

Nearby

Special Weather Statements in South Carolina, 2020 Every special weather statement in 2020

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.