Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 13, 2021Yancey County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 13, 2021, 5:01 PM EDT for Yancey County, North Carolina. It was in force for 29 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 13, 2021, 5:01 PM EDT (21:01 UTC)
Expired
Aug 13, 2021, 5:30 PM EDT
In force
29 min
Issued by
NWS Greenville-Spartanburg, SC
Hail
0.25 in
Wind
40

County Yancey County, NC

The radar

The Greer radar (KGSP), 104 km from the middle of the area, began a volume at 21:04 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, 9.0 hours before the alert went out and 212 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 2021-08-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 726 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 2021-08-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
726 J/kg
Mixed-layer CIN
-141 J/kg
Mixed-layer LCL
1319 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
36 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 Aug 13, 2:31 PM EDT, 2 hours 30 minutes earlier.

Area forecast discussion, Aug 13, 2:31 PM EDT, 2 hours 30 minutes before
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Hazardous weather outlook, Aug 13, 4:09 PM EDT, 52 minutes before
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In the hours before

Special weather statement, Aug 13, 2:37 PM EDT, 2 hours 24 minutes before
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Special weather statement, Aug 13, 3:44 PM EDT, 1 hour 17 minutes before
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Special weather statement, Aug 13, 4:23 PM EDT, 38 minutes before
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Local storm report, Aug 13, 4:26 PM EDT, 35 minutes before
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Local storm report, Aug 13, 4:26 PM EDT, 35 minutes before
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Special weather statement, Aug 13, 5:01 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.

IssuedProductOfficeCountiesLasted
Aug 13, 1:05 PM EDTSpecial Weather StatementGSPCaldwell25 min
Aug 13, 1:29 PM EDTSpecial Weather StatementGSPAvery31 min
Aug 13, 2:37 PM EDTSpecial Weather StatementGSPHenderson23 min
Aug 13, 3:44 PM EDTSpecial Weather StatementGSPPolk31 min
Aug 13, 4:23 PM EDTSpecial Weather StatementGSPBuncombe37 min
Aug 12, 8:13 PM EDTSpecial Weather StatementGSPSpartanburg32 min
Aug 13, 7:46 PM EDTSpecial Weather StatementGSPYork29 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.