Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 9, 2021Buncombe County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 9, 2021, 5:52 PM EDT for Buncombe County, North Carolina. It was in force for 23 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 9, 2021, 5:52 PM EDT (21:52 UTC)
Expired
Aug 9, 2021, 6:15 PM EDT
In force
23 min
Issued by
NWS Greenville-Spartanburg, SC
Hail
0.25 in
Wind
40

County Buncombe County, NC

The radar

The Greer radar (KGSP), 76 km from the middle of the area, began a volume at 21:54 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, 9.9 hours before the alert went out and 247 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 2021-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 430 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2021-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
430 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1026 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

839 
WWUS82 KGSP 092152
SPSGSP

Special Weather Statement
National Weather Service Greenville-Spartanburg SC
552 PM EDT Mon Aug 9 2021
 
NCZ053-092215-
Buncombe NC-
552 PM EDT Mon Aug 9 2021

...A strong thunderstorm will impact portions of central Buncombe
County through 615 PM EDT...

At 551 PM EDT, Doppler radar was tracking a strong thunderstorm 6
miles northwest of Downtown Asheville, or near Woodfin, moving
southeast at 15 mph.

HAZARD...Winds in excess of 40 mph and pea size 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...
Downtown Asheville, East Asheville, Arden, West Asheville, North
Asheville, Woodfin, Swannanoa, Weaverville, Biltmore Forest and Bent
Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

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

&&

LAT...LON 3558 8233 3544 8253 3545 8253 3543 8254
      3544 8256 3543 8257 3544 8261 3544 8262
      3565 8277 3577 8260
TIME...MOT...LOC 2151Z 320DEG 14KT 3566 8263 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 6:16 PM EDTSpecial Weather StatementGSPGaston29 min
Aug 9, 6:19 PM EDTSpecial Weather StatementGSPBuncombe26 min
Aug 9, 6:44 PM EDTSpecial Weather StatementGSPBuncombe31 min
Aug 9, 4:12 PM EDTSpecial Weather StatementGSPChester48 min
Aug 9, 4:42 PM EDTSpecial Weather StatementGSPChester48 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.