Alert archive / North Carolina / Red Flag Warnings in 2021
Red Flag Warning 1, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this red flag warning at Apr 21, 2021, 3:45 AM EDT for 6 counties in Georgia; 16 counties in North Carolina; 8 counties in South Carolina. It took effect at Apr 21, 2021, 2:00 PM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 21, 2021, 3:45 AM EDT (07:45 UTC)
- In effect from
- Apr 21, 2021, 2:00 PM EDT
- Expired
- Apr 21, 2021, 8:00 PM EDT
- In force
- 6 hr
- Issued by
- NWS Greenville-Spartanburg, SC
All 30 counties
Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA, Alexander County, NC, Burke County, NC, Cabarrus County, NC, Caldwell County, NC, Catawba County, NC, Cleveland County, NC, Davie County, NC, Gaston County, NC, Iredell County, NC, Lincoln County, NC, McDowell County, NC, Mecklenburg County, NC, Polk County, NC, Rowan County, NC, Rutherford County, NC, Union County, NC, Abbeville County, SC, Anderson County, SC, Cherokee County, SC, Chester County, SC, Greenwood County, SC, Laurens County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 45 km from the middle of the area, began a volume at 07:49 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 00:00Z, 7.8 hours before the alert went out and 204 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2214 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
669 WWUS82 KGSP 210745 RFWGSP URGENT - FIRE WEATHER MESSAGE National Weather Service Greenville-Spartanburg SC 345 AM EDT Wed Apr 21 2021 ...DRY AND WINDY THIS AFTERNOON... .In the wake of a cold front, gusty winds will develop today as a dry continental airmass pushes into the region. Low relative humidity in combination with these winds will make any fires difficult to control. GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-501>510- SCZ001>014-019-211600- /O.UPG.KGSP.FW.A.0001.210421T1800Z-210422T0000Z/ /O.NEW.KGSP.FW.W.0001.210421T1800Z-210422T0000Z/ Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell- Davie-Catawba-Rowan-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- 345 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST GEORGIA AND UPSTATE SOUTH CAROLINA AND THE FOOTHILLS AND PIEDMONT OF NORTH CAROLINA... The National Weather Service in Greenville-Spartanburg has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 2 PM this afternoon to 8 PM EDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Oconee Mountains, Pickens Mountains, Greenville Mountains, Greater Oconee, Greater Pickens, Greater Greenville, Spartanburg, Cherokee, York, Rabun, Anderson, Abbeville, Laurens, Union SC, Chester, Habersham, Stephens, Greenwood, Franklin, Hart, Elbert, Alexander, Iredell, Davie, Catawba, Rowan, 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 and Eastern Polk. * TIMING...Wednesday afternoon and early evening. * WINDS...Northwest 10 to 20 mph with gusts up to 35 mph. * HUMIDITY...As low as 27 percent. * FUEL MOISTURE...Already seasonably low, under 10 percent, and likely to drop further with no wetting rain in the forecast through Wednesday. * IMPACTS...Outdoor fires may easily grow out of control in these conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are expected to develop. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
2 follow-up statements
241 WWUS82 KGSP 211434 RFWGSP URGENT - FIRE WEATHER MESSAGE National Weather Service Greenville-Spartanburg SC 1034 AM EDT Wed Apr 21 2021 ...DRY AND WINDY THIS AFTERNOON... .In the wake of a cold front, gusty winds will develop today as a dry continental airmass pushes into the region. Low relative humidity in combination with these winds will make any fires difficult to control. GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-501>510- SCZ001>014-019-220000- /O.CON.KGSP.FW.W.0001.210421T1800Z-210422T0000Z/ Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell- Davie-Catawba-Rowan-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- 1034 AM EDT Wed Apr 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 8 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST GEORGIA...UPSTATE SOUTH CAROLINA...AND THE FOOTHILLS AND PIEDMONT OF NORTH CAROLINA... * AFFECTED AREA...Oconee Mountains, Pickens Mountains, Greenville Mountains, Greater Oconee, Greater Pickens, Greater Greenville, Spartanburg, Cherokee, York, Rabun, Anderson, Abbeville, Laurens, Union SC, Chester, Habersham, Stephens, Greenwood, Franklin, Hart, Elbert, Alexander, Iredell, Davie, Catawba, Rowan, 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 and Eastern Polk. * TIMING...This afternoon and early evening. * WINDS...Northwest 15 to 20 mph with gusts up to 35 mph. * HUMIDITY...As low as 24 percent. * FUEL MOISTURE...Already seasonably low, under 10 percent, and likely to drop further with no wetting rain in the forecast today. * IMPACTS...Outdoor fires may easily grow out of control in these conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are expected to develop. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
075 WWUS82 KGSP 211844 RFWGSP URGENT - FIRE WEATHER MESSAGE National Weather Service Greenville-Spartanburg SC 244 PM EDT Wed Apr 21 2021 ...DRY AND WINDY THIS AFTERNOON... .In the wake of a cold front, gusty winds will develop today as a dry continental airmass pushes into the region. Low relative humidity in combination with these winds will make any fires difficult to control. GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-501>510- SCZ001>014-019-220000- /O.CON.KGSP.FW.W.0001.000000T0000Z-210422T0000Z/ Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Alexander-Iredell- Davie-Catawba-Rowan-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- 244 PM EDT Wed Apr 21 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHEAST GEORGIA... UPSTATE SOUTH CAROLINA...AND THE FOOTHILLS AND PIEDMONT OF NORTH CAROLINA... * AFFECTED AREA...Oconee Mountains, Pickens Mountains, Greenville Mountains, Greater Oconee, Greater Pickens, Greater Greenville, Spartanburg, Cherokee, York, Rabun, Anderson, Abbeville, Laurens, Union SC, Chester, Habersham, Stephens, Greenwood, Franklin, Hart, Elbert, Alexander, Iredell, Davie, Catawba, Rowan, 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 and Eastern Polk. * TIMING...This afternoon and early evening. * WINDS...Northwest 15 to 20 mph with gusts up to 35 mph. * HUMIDITY...As low as 23 percent. * FUEL MOISTURE...Already seasonably low, under 10 percent, and likely to drop further with no wetting rain in the forecast today. * IMPACTS...Outdoor fires may easily grow out of control in these conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are expected to develop. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 3:40 AM EDT | Freeze Warning | GSP | Habersham, Rabun | 29 hr |
| Apr 21, 2:44 PM EDT | Frost Advisory | GSP | Elbert, Franklin, Hart, Stephens | 17 hr |
Nearby
Red Flag Warnings in North Carolina, 2021Red Flag Warnings in South Carolina, 2021Red Flag Warnings in Georgia, 2021Every red flag warning 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.