Alert archive / North Carolina / Dense Fog Advisories in 2021
Dense Fog Advisory 13, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this dense fog advisory at Aug 27, 2021, 3:04 AM EDT for 11 counties in North Carolina; Habersham County, Rabun County, Georgia. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Aug 27, 2021, 3:04 AM EDT (07:04 UTC)
- Expired
- Aug 27, 2021, 10:00 AM EDT
- In force
- 7 hr
- Issued by
- NWS Greenville-Spartanburg, SC
Counties Habersham County, GA, Rabun County, GA, Buncombe County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, Mitchell County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC
The radar
The Greer radar (KGSP), 90 km from the middle of the area, began a volume at 07:03 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 00:00Z, 7.1 hours before the alert went out and 266 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.
- Mixed-layer CAPE
- 853 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 1324 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 37 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this dense fog advisory 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 dense fog advisory went out at Aug 26, 7:51 PM EDT, 7 hours 13 minutes earlier.
Area forecast discussion, Aug 26, 7:51 PM EDT, 7 hours 13 minutes before
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</html>Hazardous weather outlook, Aug 26, 3:59 AM EDT, 23 hours 5 minutes before
Hazardous Weather Outlook National Weather Service Greenville-Spartanburg SC 359 AM EDT Thu Aug 26 2021 GAZ010-017-NCZ033-048>053-058-059-062>065-501>507-509-SCZ001>003- 270800- Rabun-Habersham-Avery-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe- Graham-Northern Jackson-Macon-Southern Jackson-Transylvania- Henderson-Caldwell Mountains-Greater Caldwell-Burke Mountains- Greater Burke-McDowell Mountains-Eastern McDowell- Rutherford Mountains-Polk Mountains-Oconee Mountains- Pickens Mountains-Greenville Mountains- 359 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for the mountains of northeast Georgia, the mountains and northern foothills of western North Carolina, and the mountains of Upstate South Carolina. .DAY ONE...Today and tonight. Scattered to numerous thunderstorms will develop across the area this afternoon and evening. The primary threats with these thunderstorms will be dangerous cloud-to-ground lightning, locally heavy rainfall, and briefly gusty winds. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. GAZ018-026-028-029-NCZ035>037-056-057-068>072-082-508-510-SCZ004>014- 019-270800- Stephens-Franklin-Hart-Elbert-Alexander-Iredell-Davie-Catawba-Rowan- Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC- Greater Rutherford-Eastern Polk-Greater Oconee-Greater Pickens- Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville- Laurens-Union SC-Chester-Greenwood- 359 AM EDT Thu Aug 26 2021 This Hazardous Weather Outlook is for northeast Georgia, the Piedmont and southern foothills of western North Carolina, and Upstate South Carolina. .DAY ONE...Today and tonight. Isolated to scattered thunderstorms will develop across the area this afternoon and evening. The primary threats with these thunderstorms will be dangerous cloud-to-ground lightning, locally heavy rainfall, and briefly gusty winds. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... None. HG
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 27, 5:56 PM EDT | Special Weather Statement | GSP | Haywood | 34 min |
| Aug 27, 7:37 PM EDT | Special Weather Statement | GSP | Haywood | 23 min |
Nearby
Dense Fog Advisories in North Carolina, 2021Dense Fog Advisories in Georgia, 2021Every dense fog advisory 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.