Alert archive / South Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

May 25, 2021Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at May 25, 2021, 6:32 PM EDT for Greenville County, South Carolina. It was in force for 28 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 25, 2021, 6:32 PM EDT (22:32 UTC)
Expired: May 25, 2021, 7:00 PM EDT
In force: 28 min
Issued by: NWS Greenville-Spartanburg, SC

County Greenville County, SC

The radar

The Greer radar (KGSP), 11 km from the middle of the area, began a volume at 22:35 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.5 hours before the alert went out and 252 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 815 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 73 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 May 25, 6:21 PM EDT, 11 minutes earlier.

Area forecast discussion, May 25, 6:21 PM EDT, 11 minutes before

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Hazardous weather outlook, May 25, 6:24 PM EDT, 8 minutes before

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In the hours before

Special weather statement, May 25, 5:13 PM EDT, 1 hour 19 minutes before

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
513 PM EDT Tue May 25 2021

SCZ013-252145-
Union SC-
513 PM EDT Tue May 25 2021

...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN UNION COUNTY UNTIL
545 PM EDT...

At 513 PM EDT, Doppler radar was tracking a strong thunderstorm 14
miles south of Union, or near Whitmire, moving northeast at 25 mph.

Locations to be impacted include...
Monarch Mill, Carlisle, Rose Hill State Park, Tuckertown, Santuc and
Adamsburg.

Wind gusts up to 40 mph and pea size hail will be possible in this
areas.

LAT...LON 3446 8156 3448 8155 3453 8162 3453 8164
      3456 8168 3455 8172 3456 8174 3479 8152
      3475 8148 3474 8149 3473 8148 3472 8145
      3468 8145 3464 8142 3452 8142 3449 8149
      3445 8154
TIME...MOT...LOC 2113Z 227DEG 20KT 3452 8164

WJM

Special weather statement, May 25, 6:32 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
May 25, 5:13 PM EDT	Special Weather Statement	GSP	Union	32 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.