Alert archive / North Carolina / Special Weather Statements in 2021

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 9, 2021Graham County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 9, 2021, 9:37 AM EDT for Graham County, North Carolina. It was in force for 38 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
Jul 9, 2021, 9:37 AM EDT (13:37 UTC)
Expired
Jul 9, 2021, 10:15 AM EDT
In force
38 min
Issued by
NWS Greenville-Spartanburg, SC

County Graham County, NC

The radar

The Knoxville radar (KMRX), 93 km from the middle of the area, began a volume at 13:37 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, 1.6 hours before the alert went out and 236 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 2021-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 785 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 2021-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 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
785 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
638 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
22 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 Jul 9, 6:51 AM EDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jul 9, 6:51 AM EDT, 2 hours 46 minutes before
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Hazardous weather outlook, Jul 9, 5:17 AM EDT, 4 hours 20 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
517 AM EDT Fri Jul 9 2021

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-100930-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Avery-Alexander-
Iredell-Davie-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Catawba-
Rowan-Graham-Northern Jackson-Macon-Southern Jackson-Transylvania-
Henderson-Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
Caldwell Mountains-Greater Caldwell-Burke Mountains-Greater Burke-
McDowell Mountains-Eastern McDowell-Rutherford Mountains-
Greater Rutherford-Polk Mountains-Eastern Polk-Oconee Mountains-
Pickens Mountains-Greenville Mountains-Greater Oconee-
Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood-
517 AM EDT Fri Jul 9 2021

This Hazardous Weather Outlook is for northeast Georgia, western
North Carolina and upstate South Carolina.

.DAY ONE...Today and tonight.

Thunderstorms are expected to develop across the region today ahead
of an approaching cold front. Storms will begin to develop this
morning over the mountains and will move east across the foothills
and Piedmont this afternoon. A few of the thunderstorms will be
strong to severe with damaging wind gusts and large hail possible.
Frequent lightning and heavy downpours will also accompany the
storms. The storms should push to the east of the area during the
early part of the evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

PM

In the hours before

Special weather statement, Jul 9, 9:37 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
937 AM EDT Fri Jul 9 2021

NCZ051-058-091415-
Graham NC-Swain NC-
937 AM EDT Fri Jul 9 2021

...A STRONG THUNDERSTORM WILL IMPACT WEST CENTRAL SWAIN AND GRAHAM
COUNTIES UNTIL 1015 AM EDT...

At 937 AM EDT, Doppler radar was tracking a strong thunderstorm 13
miles northwest of Robbinsville, or 4 miles west of Smoky
Mountains-Twentymile Creek, moving southeast at 30 mph.

Locations to be impacted include...
Robbinsville, Town Of Santeetlah, Smoky Mountains-Fontana Area, Lake
Santeetlah, Fontana Lake, Fontana Village, Smoky Mountains-Twentymile
Creek, Smoky Mountains-Clingmans Dome, Stecoah and Cheoah.

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 3537 8401 3541 8402 3546 8396 3547 8392
      3552 8388 3553 8382 3556 8377 3557 8362
      3556 8352 3537 8364 3526 8378 3530 8402
      3531 8404 3535 8404
TIME...MOT...LOC 1337Z 300DEG 26KT 3550 8393

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 10:30 AM EDTSpecial Weather StatementGSPMacon45 min
Jul 9, 11:03 AM EDTSpecial Weather StatementGSPJackson, Macon42 min
Jul 9, 11:28 AM EDTSpecial Weather StatementGSPBuncombe, Haywood47 min
Jul 9, 11:40 AM EDTSpecial Weather StatementGSPTransylvania50 min
Jul 9, 12:26 PM EDTSpecial Weather StatementGSPPolk34 min
Jul 9, 12:36 PM EDTSpecial Weather StatementGSPBurke24 min
Jul 9, 1:14 PM EDTSpecial Weather StatementGSPPolk, Rutherford31 min
Jul 9, 1:17 PM EDTSpecial Weather StatementGSPGaston28 min
Jul 9, 1:22 PM EDTSpecial Weather StatementGSPIredell23 min
Jul 9, 1:33 PM EDTSpecial Weather StatementGSPDavie27 min
Jul 9, 1:34 PM EDTSpecial Weather StatementGSPLincoln26 min
Jul 9, 1:50 PM EDTSevere Thunderstorm WarningGSPLincoln40 min
Jul 9, 1:55 PM EDTSpecial Weather StatementGSPGaston35 min
Jul 9, 1:59 PM EDTSevere Thunderstorm WarningGSPDavie27 min
Jul 9, 2:13 PM EDTSpecial Weather StatementGSPGaston32 min
Jul 9, 2:18 PM EDTSpecial Weather StatementGSPMecklenburg27 min
Jul 9, 2:20 PM EDTSpecial Weather StatementGSPGaston25 min
Jul 9, 2:36 PM EDTSevere Thunderstorm WarningGSPMecklenburg54 min
Jul 9, 2:51 PM EDTSpecial Weather StatementGSPCabarrus39 min
Jul 9, 2:57 PM EDTSpecial Weather StatementGSPUnion48 min
Jul 9, 3:07 PM EDTSpecial Weather StatementGSPStanly23 min
Jul 9, 3:39 PM EDTSpecial Weather StatementGSPUnion36 min
Jul 9, 5:01 PM EDTSpecial Weather StatementGSPCaldwell29 min
Jul 9, 6:43 PM EDTSpecial Weather StatementGSPDavie32 min
Jul 9, 7:09 PM EDTSpecial Weather StatementGSPDavie21 min
Jul 9, 12:06 PM EDTSpecial Weather StatementGSPPickens39 min
Jul 9, 12:40 PM EDTSevere Thunderstorm WarningGSPGreenville, Pickens26 min
Jul 9, 1:11 PM EDTSpecial Weather StatementGSPAbbeville34 min
Jul 9, 1:25 PM EDTSpecial Weather StatementGSPOconee35 min
Jul 9, 1:38 PM EDTSpecial Weather StatementGSPCherokee37 min
Jul 9, 2:40 PM EDTSpecial Weather StatementGSPYork35 min
Jul 9, 3:10 PM EDTSpecial Weather StatementGSPChester35 min
Jul 9, 11:13 AM EDTSpecial Weather StatementGSPRabun47 min
Jul 9, 12:28 PM EDTSpecial Weather StatementGSPHabersham32 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.