Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 7, 2021Polk County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 7, 2021, 2:55 PM EDT for Polk County, North 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, 2021, 2:55 PM EDT (18:55 UTC)
Expired
Aug 7, 2021, 3:45 PM EDT
In force
50 min
Issued by
NWS Greenville-Spartanburg, SC
Hail
0.50 in
Wind
40

County Polk County, NC

The radar

The Greer radar (KGSP), 35 km from the middle of the area, began a volume at 18:55 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, 6.9 hours before the alert went out and 224 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
17 J/kg
Mixed-layer CIN
-87 J/kg
Mixed-layer LCL
543 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
67 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

952 
WWUS82 KGSP 071855
SPSGSP

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
255 PM EDT Sat Aug 7 2021
 
NCZ065-509-510-SCZ003-006-007-071945-
Henderson NC-Polk Mountains NC-Eastern Polk NC-
Greenville Mountains SC-Spartanburg SC-Greater Greenville SC-
255 PM EDT Sat Aug 7 2021

...A strong thunderstorm will impact portions of southeastern
Henderson, southern Polk, northeastern Greenville and northwestern
Spartanburg Counties through 345 PM EDT...

At 255 PM EDT, Doppler radar was tracking a strong thunderstorm 5
miles west of Columbus, or near Saluda, moving southeast at 15 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Columbus, Flat Rock, Landrum, Inman, Tryon, Campobello, Saluda, Lake
Bowen, Tigerville and Lyman.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3521 8197 3519 8197 3518 8194 3492 8217
      3520 8251 3538 8234
TIME...MOT...LOC 1855Z 307DEG 15KT 3523 8230 

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

$$

JPT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 8:35 PM EDTSpecial Weather StatementGSPSwain40 min
Aug 7, 12:35 PM EDTSpecial Weather StatementGSPHaywood25 min
Aug 7, 1:25 PM EDTSpecial Weather StatementGSPBuncombe35 min
Aug 7, 1:55 PM EDTSpecial Weather StatementGSPYancey50 min
Aug 7, 2:03 PM EDTSpecial Weather StatementGSPHenderson, Transylvania42 min
Aug 7, 2:06 PM EDTSpecial Weather StatementGSPBurke39 min
Aug 7, 2:14 PM EDTSpecial Weather StatementGSPPolk46 min
Aug 7, 2:47 PM EDTSpecial Weather StatementGSPBurke, McDowell43 min
Aug 7, 3:35 PM EDTSpecial Weather StatementGSPCleveland, Rutherford40 min
Aug 7, 3:47 PM EDTSpecial Weather StatementGSPPolk43 min
Aug 7, 4:06 PM EDTSpecial Weather StatementGSPMcDowell, Mitchell, Yancey39 min
Aug 7, 4:17 PM EDTSpecial Weather StatementGSPCleveland, Rutherford43 min
Aug 7, 4:20 PM EDTSpecial Weather StatementGSPCaldwell25 min
Aug 7, 4:49 PM EDTSpecial Weather StatementGSPAlexander, Caldwell41 min
Aug 7, 4:51 PM EDTSpecial Weather StatementGSPMcDowell39 min
Aug 7, 4:53 PM EDTSpecial Weather StatementGSPBuncombe37 min
Aug 7, 5:21 PM EDTSpecial Weather StatementGSPCaldwell39 min
Aug 7, 5:32 PM EDTSpecial Weather StatementGSPBuncombe43 min
Aug 7, 5:46 PM EDTSpecial Weather StatementGSPJackson44 min
Aug 7, 6:02 PM EDTSpecial Weather StatementGSPBurke, Caldwell, Catawba43 min
Aug 7, 6:19 PM EDTSpecial Weather StatementGSPAlexander, Iredell41 min
Aug 7, 7:35 PM EDTSpecial Weather StatementGSPCabarrus, Rowan40 min
Aug 7, 1:04 PM EDTSpecial Weather StatementGSPOconee26 min
Aug 7, 1:33 PM EDTSpecial Weather StatementGSPOconee42 min
Aug 7, 2:20 PM EDTSpecial Weather StatementGSPOconee40 min
Aug 7, 4:38 PM EDTSpecial Weather StatementGSPSpartanburg37 min
Aug 7, 5:07 PM EDTSpecial Weather StatementGSPSpartanburg38 min
Aug 7, 5:48 PM EDTSpecial Weather StatementGSPSpartanburg42 min
Aug 7, 3:14 PM EDTSpecial Weather StatementGSPFranklin, Hart46 min
Aug 7, 4:07 PM EDTSpecial Weather StatementGSPRabun38 min
Aug 7, 4:47 PM EDTSpecial Weather StatementGSPHabersham, Rabun43 min

Nearby

Special Weather Statements in North Carolina, 2021Every 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.