Alert archive / South Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 3, 2020Oconee County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 3, 2020, 4:08 PM EDT for Oconee County, South Carolina. It was in force for 22 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 3, 2020, 4:08 PM EDT (20:08 UTC)
Expired
Aug 3, 2020, 4:30 PM EDT
In force
22 min
Issued by
NWS Greenville-Spartanburg, SC

County Oconee County, SC

The radar

The Greer radar (KGSP), 65 km from the middle of the area, began a volume at 20:07 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, 8.1 hours before the alert went out and 219 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 2020-08-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 988 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 2020-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.19395878Sfc1 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
988 J/kg
Mixed-layer CIN
-69 J/kg
Mixed-layer LCL
1116 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
33 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.6

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 3, 2:57 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Aug 3, 2:57 PM EDT, 1 hour 11 minutes before
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Hazardous weather outlook, Aug 3, 4:08 AM EDT, 12 hours before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
408 AM EDT Mon Aug 3 2020

GAZ010-017-018-026-028-029-NCZ035>037-048-051>053-056>059-062>065-
068>072-082-507>510-SCZ001>014-019-040815-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell-
Davie-Madison-Swain-Haywood-Buncombe-Catawba-Rowan-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
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-
408 AM EDT Mon Aug 3 2020

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

.DAY ONE...Today and tonight.

Showers and thunderstorms will increase in coverage through the day
today, continuing to produce locally heavy rainfall. Isolated flash
flooding may occur where storms repeatedly affect the same location.
The thunderstorms will also produce dangerous cloud-to-ground
lightning and gusty winds. A few damaging wind gusts will be possible
with the strongest storms.

As Tropical Storm Isaias makes its nearest pass to our region
tonight, breezy and occasionally gusty winds may develop. A few
trees could fall in areas where soils are saturated by the recent
heavy rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters should relay any reports of flooding to the National Weather
Service.

NCZ033-049-050-501>506-040815-
Avery-Yancey-Mitchell-Caldwell Mountains-Greater Caldwell-
Burke Mountains-Greater Burke-McDowell Mountains-Eastern McDowell-
408 AM EDT Mon Aug 3 2020

...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY MORNING...

This Hazardous Weather Outlook is for the northern mountains and
adjacent foothills of western North Carolina.

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

Showers and thunderstorms will increase in coverage through the day
today. In addition to the heavy rainfall mentioned in the Flash Flood
Watch, the thunderstorms will also produce dangerous cloud-to-
ground lightning and gusty winds. A few damaging wind gusts will be
possible with the strongest storms.

As Tropical Storm Isaias makes its nearest pass to our region
tonight, breezy and occasionally gusty winds may develop. A few trees
could fall in areas where soils are saturated by the recent heavy
rainfall.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotters should relay any reports of flooding to the National Weather
Service.

HG

In the hours before

Special weather statement, Aug 3, 2:08 PM EDT, 2 hours before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
208 PM EDT Mon Aug 3 2020

GAZ010-031845-
Rabun GA-
208 PM EDT Mon Aug 3 2020

...A STRONG THUNDERSTORM WILL IMPACT NORTH CENTRAL RABUN COUNTY UNTIL
245 PM EDT...

At 208 PM EDT, Doppler radar was tracking a strong thunderstorm 4
miles northwest of Clayton, or near Black Rock Mountain State Park,
moving northeast at 10 mph.

Locations to be impacted include...
Dillard.

Wind gusts up to 45 mph and nickel size hail will be possible in
these areas.

LAT...LON 3499 8352 3500 8336 3486 8346 3487 8353
TIME...MOT...LOC 1808Z 216DEG 10KT 3494 8344

LANE
Local storm report, Aug 3, 2:31 PM EDT, 1 hour 37 minutes before
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Special weather statement, Aug 3, 2:44 PM EDT, 1 hour 24 minutes before
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Special weather statement, Aug 3, 3:01 PM EDT, 1 hour 7 minutes before
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Special weather statement, Aug 3, 3:44 PM EDT, 24 minutes before
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Special weather statement, Aug 3, 4:08 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 2, 11:10 PM EDTSpecial Weather StatementGSPRutherford35 min
Aug 2, 11:28 PM EDTSpecial Weather StatementGSPIredell32 min
Aug 2, 11:40 PM EDTSpecial Weather StatementGSPRutherford35 min
Aug 2, 11:56 PM EDTSpecial Weather StatementGSPDavie, Iredell34 min
Aug 3, 12:01 AM EDTSpecial Weather StatementGSPCleveland29 min
Aug 3, 12:02 AM EDTSpecial Weather StatementGSPIredell28 min
Aug 3, 12:21 AM EDTSevere Thunderstorm WarningGSPBurke, Catawba, Cleveland, Lincoln, Rutherford54 min
Aug 3, 12:23 AM EDTSpecial Weather StatementGSPDavie, Iredell37 min
Aug 3, 12:36 AM EDTSevere Thunderstorm WarningGSPCleveland, Gaston, Lincoln39 min
Aug 3, 12:39 AM EDTSpecial Weather StatementGSPPolk36 min
Aug 3, 12:52 AM EDTSpecial Weather StatementGSPDavie38 min
Aug 3, 1:07 AM EDTSpecial Weather StatementGSPIredell38 min
Aug 3, 1:28 AM EDTSpecial Weather StatementGSPCaldwell32 min
Aug 3, 1:37 AM EDTSpecial Weather StatementGSPDavie38 min
Aug 3, 2:13 AM EDTSpecial Weather StatementGSPDavie32 min
Aug 3, 2:15 AM EDTSpecial Weather StatementGSPRutherford30 min
Aug 3, 2:42 AM EDTAreal Flood AdvisoryGSPDavie, Iredell, Rowan3 hr
Aug 3, 2:57 AM EDTAreal Flood AdvisoryGSPPolk, Rutherford3 hr
Aug 3, 2:59 AM EDTSpecial Weather StatementGSPMcDowell31 min
Aug 3, 4:28 AM EDTAreal Flood AdvisoryGSPCatawba, Cleveland, Lincoln, Rutherford3 hr
Aug 3, 6:10 AM EDTSpecial Weather StatementGSPMacon35 min
Aug 3, 6:23 AM EDTSpecial Weather StatementGSPSwain52 min
Aug 3, 6:50 AM EDTSpecial Weather StatementGSPGraham40 min
Aug 3, 7:26 AM EDTSpecial Weather StatementGSPMadison34 min
Aug 3, 7:56 AM EDTSpecial Weather StatementGSPMadison34 min
Aug 3, 8:21 AM EDTAreal Flood AdvisoryGSPMadison3 hr
Aug 3, 8:26 AM EDTAreal Flood AdvisoryGSPBurke, Caldwell, McDowell, Mitchell7 hr
Aug 3, 8:29 AM EDTSpecial Weather StatementGSPBurke46 min
Aug 3, 8:47 AM EDTFlash Flood WarningGSPMadison3 hr
Aug 3, 9:11 AM EDTFlash Flood WarningGSPBurke, McDowell, Rutherford3 hr
Aug 3, 9:23 AM EDTAreal Flood AdvisoryGSPJackson, Swain3 hr
Aug 3, 9:37 AM EDTAreal Flood AdvisoryGSPCaldwell3 hr
Aug 3, 11:56 AM EDTSpecial Weather StatementGSPHenderson34 min
Aug 3, 2:04 PM EDTSpecial Weather StatementGSPGaston, Iredell, Lincoln56 min
Aug 3, 2:44 PM EDTSpecial Weather StatementGSPCleveland46 min
Aug 2, 8:01 PM EDTSpecial Weather StatementGSPAbbeville14 min
Aug 2, 10:42 PM EDTSpecial Weather StatementGSPGreenville, Spartanburg48 min
Aug 3, 1:51 PM EDTSpecial Weather StatementGSPGreenville54 min
Aug 3, 4:32 PM EDTSpecial Weather StatementGSPOconee28 min
Aug 3, 5:19 PM EDTSpecial Weather StatementGSPAnderson41 min
Aug 3, 5:32 PM EDTAreal Flood AdvisoryGSPAnderson, Pickens4 hr
Aug 3, 7:54 PM EDTAreal Flood AdvisoryGSPGreenwood4 hr
Aug 3, 2:08 PM EDTSpecial Weather StatementGSPRabun37 min
Aug 3, 3:01 PM EDTSpecial Weather StatementGSPHabersham29 min
Aug 3, 3:44 PM EDTSpecial Weather StatementGSPFranklin31 min
Aug 3, 4:19 PM EDTSpecial Weather StatementGSPFranklin26 min
Aug 3, 4:48 PM EDTSpecial Weather StatementGSPHart27 min
Aug 3, 6:21 PM EDTAreal Flood AdvisoryGSPElbert3 hr

Nearby

Special Weather Statements in South Carolina, 2020Every special weather statement in 2020

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.