Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

May 28, 2021Graham County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at May 28, 2021, 4:21 PM EDT for Graham County, North 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
May 28, 2021, 4:21 PM EDT (20:21 UTC)
Expired
May 28, 2021, 4:45 PM EDT
In force
24 min
Issued by
NWS Greenville-Spartanburg, SC

County Graham County, NC

The radar

The Knoxville radar (KMRX), 85 km from the middle of the area, began a volume at 20:23 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 12:00Z, 8.4 hours before the alert went out and 243 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 77 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, Peachtre/Fal Fld, GA at 12:00Z on 2021-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 square meters per square second.1939Sfc1 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
77 J/kg
Mixed-layer CIN
-68 J/kg
Mixed-layer LCL
996 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

611 
WWUS82 KGSP 282021
SPSGSP

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
421 PM EDT Fri May 28 2021
 
NCZ051-058-282045-
Graham NC-Swain NC-
421 PM EDT Fri May 28 2021

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL SWAIN AND NORTHERN
GRAHAM COUNTIES UNTIL 445 PM EDT...

At 420 PM EDT, Doppler radar was tracking a strong thunderstorm 17
miles northwest of Robbinsville, or 12 miles west of Town Of
Santeetlah, moving east at 35 mph.

Locations to be impacted include...
Fontana Lake, Smoky Mountains-Fontana Area, Fontana Village, Smoky
Mountains-Twentymile Creek, Tapoco, Deals Gap and Great Smoky
Mountains National Park.

Wind gusts up to 40 mph will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

&&

LAT...LON 3546 8396 3547 8392 3552 8387 3553 8382
      3556 8377 3557 8363 3558 8361 3556 8358
      3543 8354 3537 8401 3539 8401 3541 8402
TIME...MOT...LOC 2020Z 252DEG 32KT 3543 8408 

$$

HG

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 3:08 PM EDTSpecial Weather StatementGSPLincoln37 min
May 28, 3:28 PM EDTSpecial Weather StatementGSPMecklenburg32 min
May 28, 3:39 PM EDTSpecial Weather StatementGSPGaston36 min
May 28, 3:53 PM EDTSpecial Weather StatementGSPGaston37 min
May 28, 4:08 PM EDTSpecial Weather StatementGSPRowan22 min
May 28, 4:26 PM EDTSpecial Weather StatementGSPCabarrus, Rowan34 min
May 28, 4:31 PM EDTSpecial Weather StatementGSPGaston29 min
May 28, 4:44 PM EDTSpecial Weather StatementGSPSwain31 min
May 28, 4:48 PM EDTSpecial Weather StatementGSPCabarrus27 min
May 28, 4:50 PM EDTSpecial Weather StatementGSPMecklenburg25 min
May 28, 5:03 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan27 min
May 28, 5:17 PM EDTSpecial Weather StatementGSPMecklenburg28 min
May 28, 5:44 PM EDTSpecial Weather StatementGSPUnion31 min
May 28, 5:53 PM EDTSpecial Weather StatementGSPGraham, Swain52 min
May 28, 6:01 PM EDTSpecial Weather StatementGSPMadison, Mitchell, Swain59 min
May 28, 6:34 PM EDTSpecial Weather StatementGSPAvery, Mitchell, Yancey56 min
May 28, 6:38 PM EDTSpecial Weather StatementGSPGraham, Haywood, Jackson, Macon, Swain67 min
May 28, 7:04 PM EDTSpecial Weather StatementGSPAvery26 min
May 28, 2:12 PM EDTSpecial Weather StatementGSPAnderson33 min
May 28, 2:44 PM EDTSpecial Weather StatementGSPGreenville31 min
May 28, 2:55 PM EDTSpecial Weather StatementGSPOconee, Pickens35 min
May 28, 2:58 PM EDTSpecial Weather StatementGSPLaurens32 min
May 28, 3:04 PM EDTSpecial Weather StatementGSPYork26 min
May 28, 3:21 PM EDTSpecial Weather StatementGSPSpartanburg24 min
May 28, 3:30 PM EDTSpecial Weather StatementGSPGreenville30 min
May 28, 3:40 PM EDTSpecial Weather StatementGSPCherokee35 min
May 28, 4:06 PM EDTSpecial Weather StatementGSPCherokee24 min
May 28, 4:46 PM EDTSpecial Weather StatementGSPChester29 min
May 28, 6:03 PM EDTSpecial Weather StatementGSPAnderson27 min
May 28, 6:10 PM EDTSpecial Weather StatementGSPAbbeville35 min
May 28, 6:21 PM EDTSpecial Weather StatementGSPLaurens24 min
May 28, 7:31 PM EDTSpecial Weather StatementGSPCherokee29 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.