Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 25, 2021Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 25, 2021, 8:36 PM EDT for Greenville 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 25, 2021, 8:36 PM EDT (00:36 UTC)
Expired: Aug 25, 2021, 9:00 PM EDT
In force: 24 min
Issued by: NWS Greenville-Spartanburg, SC

County Greenville County, SC

The radar

The Greer radar (KGSP), 27 km from the middle of the area, began a volume at 00:37 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, 0.6 hours before the alert went out and 250 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: 1334 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 987 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.0

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 25, 8:08 PM EDT, 28 minutes earlier.

Area forecast discussion, Aug 25, 8:08 PM EDT, 28 minutes before

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Hazardous weather outlook, Aug 25, 11:18 AM EDT, 9 hours 18 minutes before

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
1118 AM EDT Wed Aug 25 2021

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-261530-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander-
Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba-
Rowan-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania-
Henderson-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-Oconee Mountains-
Pickens Mountains-Greenville Mountains-Greater Oconee-
Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood-
1118 AM EDT Wed Aug 25 2021

This Hazardous Weather Outlook is for northeast Georgia, piedmont
North Carolina, western North Carolina and upstate South Carolina.

.DAY ONE...This afternoon and tonight.

Scattered to numerous showers and thunderstorms will develop this
afternoon and evening. Any of these thunderstorms may produce
dangerous cloud-to-ground lightning, locally heavy rainfall, and
gusty winds. A few storms may become severe, with damaging wind
gusts
possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

MPR

In the hours before

Special weather statement, Aug 25, 7:25 PM EDT, 1 hour 11 minutes before

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Special weather statement, Aug 25, 7:28 PM EDT, 1 hour 8 minutes before

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Special weather statement, Aug 25, 7:55 PM EDT, 41 minutes before

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Special weather statement, Aug 25, 8:08 PM EDT, 28 minutes before

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Local storm report, Aug 25, 8:28 PM EDT, 8 minutes before

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Special weather statement, Aug 25, 8:36 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 26, 3:02 PM EDT	Special Weather Statement	GSP	Buncombe	28 min
Aug 26, 3:03 PM EDT	Special Weather Statement	GSP	Lincoln	27 min
Aug 26, 3:51 PM EDT	Severe Thunderstorm Warning	GSP	Rutherford	27 min
Aug 26, 3:59 PM EDT	Special Weather Statement	GSP	Burke	31 min
Aug 26, 4:30 PM EDT	Special Weather Statement	GSP	Burke	30 min
Aug 26, 4:39 PM EDT	Severe Thunderstorm Warning	GSP	Burke	51 min
Aug 26, 5:04 PM EDT	Severe Thunderstorm Warning	GSP	Burke, McDowell	26 min
Aug 26, 5:33 PM EDT	Special Weather Statement	GSP	Madison	27 min
Aug 26, 5:37 PM EDT	Special Weather Statement	GSP	Henderson	23 min
Aug 26, 5:53 PM EDT	Special Weather Statement	GSP	Yancey	37 min
Aug 26, 6:01 PM EDT	Special Weather Statement	GSP	Transylvania	29 min
Aug 25, 8:08 PM EDT	Special Weather Statement	GSP	Spartanburg	37 min
Aug 26, 3:07 PM EDT	Special Weather Statement	GSP	Spartanburg	23 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.