Alert archive / North Carolina / Freeze Warnings in 2021

Freeze Warning 5, NWS Greenville-Spartanburg, SC

November 4, 202112 counties in North Carolina; York County, South Carolina

NWS Greenville-Spartanburg, SC issued this freeze warning at Nov 4, 2021, 3:23 AM EDT for 12 counties in North Carolina; York County, South Carolina. It took effect at Nov 5, 2021, 2:00 AM EDT. It was in force for 8 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
Nov 4, 2021, 3:23 AM EDT (07:23 UTC)
In effect from
Nov 5, 2021, 2:00 AM EDT
Expired
Nov 5, 2021, 10:00 AM EDT
In force
8 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties 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, Rowan County, NC, York County, SC

The radar

The Greer radar (KGSP), 124 km from the middle of the area, began a volume at 07:27 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, 7.4 hours before the alert went out and 127 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 00:00Z on 2021-11-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2021-11-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1768 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
115 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

527 
WWUS72 KGSP 040723
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
323 AM EDT Thu Nov 4 2021

NCZ035>037-056-057-068-069-072-502-504-506-041530-
/O.UPG.KGSP.FZ.A.0004.211105T0600Z-211105T1400Z/
/O.NEW.KGSP.FZ.W.0005.211105T0600Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Cabarrus-
Greater Caldwell-Greater Burke-Eastern McDowell-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Concord, Kannapolis, Kings Creek, Lenoir, Sawmills, 
Granite Falls, Morganton, Pleasant Grove, Valdese, Marion, Nebo, 
Dysartsville, Fero, and Glenwood
323 AM EDT Thu Nov 4 2021

...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of piedmont and western North Carolina.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ070-SCZ009-041530-
/O.NEW.KGSP.FZ.W.0005.211105T0600Z-211105T1400Z/
Gaston-York-
Including the cities of Gastonia, Catawba, and Rock Hill
323 AM EDT Thu Nov 4 2021

...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY...

* WHAT...Sub-freezing temperatures as low as 31 expected.

* WHERE...In South Carolina, York County. In North Carolina, 
  Gaston County.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other
  sensitive vegetation and possibly damage unprotected outdoor
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ071-082-508-SCZ008-013-014-041530-
/O.NEW.KGSP.FR.Y.0007.211105T0600Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Cherokee-Union SC-Chester-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Gaffney, Union,
Monarch Mills, Chester, Cornwell, and Great Falls
323 AM EDT Thu Nov 4 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY...

* WHAT...Temperatures as low as 31 will result in frost 
  formation.

* WHERE...In South Carolina, Cherokee, Union SC and Chester 
  Counties. In North Carolina, Mecklenburg, Union NC and Greater 
  Rutherford Counties.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if left
  uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

MPR
5 follow-up statements
098 
WWUS72 KGSP 041504
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
1104 AM EDT Thu Nov 4 2021

NCZ035>037-056-057-068>070-072-502-504-506-SCZ009-050000-
/O.CON.KGSP.FZ.W.0005.211105T0600Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Cabarrus-Greater Caldwell-Greater Burke-Eastern McDowell-York-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Gastonia, Concord, Kannapolis, Kings Creek, Lenoir, 
Sawmills, Granite Falls, Morganton, Pleasant Grove, Valdese, 
Marion, Nebo, Dysartsville, Fero, Glenwood, Catawba, 
and Rock Hill
1104 AM EDT Thu Nov 4 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of piedmont and western North Carolina.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ071-082-508-SCZ008-013-014-050000-
/O.CON.KGSP.FR.Y.0007.211105T0600Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Cherokee-Union SC-Chester-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Gaffney, Union,
Monarch Mills, Chester, Cornwell, and Great Falls
1104 AM EDT Thu Nov 4 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Temperatures as low as 31 will result in frost 
  formation.

* WHERE...In South Carolina, Cherokee, Union SC and Chester 
  Counties. In North Carolina, Mecklenburg, Union NC and Greater 
  Rutherford Counties.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
489 
WWUS72 KGSP 041821
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
221 PM EDT Thu Nov 4 2021

NCZ035>037-056-057-068>070-072-502-504-506-SCZ009-050200-
/O.CON.KGSP.FZ.W.0005.211105T0600Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Cabarrus-Greater Caldwell-Greater Burke-Eastern McDowell-York-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Gastonia, Concord, Kannapolis, Kings Creek, Lenoir, 
Sawmills, Granite Falls, Morganton, Pleasant Grove, Valdese, 
Marion, Nebo, Dysartsville, Fero, Glenwood, Catawba, 
and Rock Hill
221 PM EDT Thu Nov 4 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of piedmont and western North Carolina.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ510-SCZ001>007-010>012-019-050200-
/O.EXA.KGSP.FR.Y.0007.211105T0600Z-211105T1400Z/
Eastern Polk-Oconee Mountains-Pickens Mountains-
Greenville Mountains-Greater Oconee-Greater Pickens-
Greater Greenville-Spartanburg-Anderson-Abbeville-Laurens-
Greenwood-
Including the cities of Tryon, Columbus, Mill Spring, 
Mountain Rest, Walhalla, Westminster, Pumpkintown, Tigerville, 
Gowensville, Cleveland, Slater-Marietta, Seneca, Oakway, Easley, 
Dacusville, Clemson, Greenville, Taylors, Greer, Mauldin, 
Fork Shoals, Simpsonville, Berea, Spartanburg, Anderson, 
Abbeville, Calhoun Falls, Laurens, Clinton, Ware Shoals, 
and Ninety Six
221 PM EDT Thu Nov 4 2021

...FROST ADVISORY IN EFFECT FROM 2 AM TO 10 AM EDT FRIDAY...

* WHAT...Temperatures as low as 34 will result in frost 
  formation.

* WHERE...Portions of upstate South Carolina and western North 
  Carolina.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

NCZ071-082-508-SCZ008-013-014-050200-
/O.CON.KGSP.FR.Y.0007.211105T0600Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Cherokee-Union SC-Chester-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Gaffney, Union,
Monarch Mills, Chester, Cornwell, and Great Falls
221 PM EDT Thu Nov 4 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Temperatures as low as 31 will result in frost 
  formation.

* WHERE...In South Carolina, Cherokee, Union SC and Chester 
  Counties. In North Carolina, Mecklenburg, Union NC and Greater 
  Rutherford Counties.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
668 
WWUS72 KGSP 050156
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
956 PM EDT Thu Nov 4 2021

NCZ035>037-056-057-068>070-072-502-504-506-SCZ009-050830-
/O.CON.KGSP.FZ.W.0005.211105T0600Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Cabarrus-Greater Caldwell-Greater Burke-Eastern McDowell-York-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Gastonia, Concord, Kannapolis, Kings Creek, Lenoir, 
Sawmills, Granite Falls, Morganton, Pleasant Grove, Valdese, 
Marion, Nebo, Dysartsville, Fero, Glenwood, Catawba, 
and Rock Hill
956 PM EDT Thu Nov 4 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of western North Carolina east of the Blue 
  Ridge, plus York County, South Carolina.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ071-082-508-510-SCZ001>008-010>014-019-050830-
/O.CON.KGSP.FR.Y.0007.211105T0600Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Eastern Polk-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg-
Cherokee-Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Tryon, 
Columbus, Mill Spring, Mountain Rest, Walhalla, Westminster, 
Pumpkintown, Tigerville, Gowensville, Cleveland, Slater-Marietta,
Seneca, Oakway, Easley, Dacusville, Clemson, Greenville, Taylors,
Greer, Mauldin, Fork Shoals, Simpsonville, Berea, Spartanburg, 
Gaffney, Anderson, Abbeville, Calhoun Falls, Laurens, Clinton, 
Union, Monarch Mills, Chester, Cornwell, Great Falls, 
Ware Shoals, and Ninety Six
956 PM EDT Thu Nov 4 2021

...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 10 AM EDT
FRIDAY...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Upstate South Carolina, plus the Thermal Belt areas of
  the North Carolina foothills, and a portion of Metro Charlotte.

* WHEN...From 2 AM to 10 AM EDT Friday.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$
Wimberley
661 
WWUS72 KGSP 050725
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
325 AM EDT Fri Nov 5 2021

NCZ035>037-056-057-068>070-072-502-504-506-SCZ009-051400-
/O.CON.KGSP.FZ.W.0005.000000T0000Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Cabarrus-Greater Caldwell-Greater Burke-Eastern McDowell-York-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Gastonia, Concord, Kannapolis, Kings Creek, Lenoir, 
Sawmills, Granite Falls, Morganton, Pleasant Grove, Valdese, 
Marion, Nebo, Dysartsville, Fero, Glenwood, Catawba, 
and Rock Hill
325 AM EDT Fri Nov 5 2021

...FREEZE WARNING REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...

* WHAT...Sub-freezing temperatures as low as 30 expected.

* WHERE...Portions of western North Carolina east of the Blue 
  Ridge, plus York County, South Carolina.

* WHEN...Through 10 AM EDT this morning.

* IMPACTS...Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

NCZ071-082-508-510-SCZ001>008-010>014-019-051400-
/O.CON.KGSP.FR.Y.0007.000000T0000Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Eastern Polk-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg-
Cherokee-Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Tryon, 
Columbus, Mill Spring, Mountain Rest, Walhalla, Westminster, 
Pumpkintown, Tigerville, Gowensville, Cleveland, Slater-Marietta,
Seneca, Oakway, Easley, Dacusville, Clemson, Greenville, Taylors,
Greer, Mauldin, Fork Shoals, Simpsonville, Berea, Spartanburg, 
Gaffney, Anderson, Abbeville, Calhoun Falls, Laurens, Clinton, 
Union, Monarch Mills, Chester, Cornwell, Great Falls, 
Ware Shoals, and Ninety Six
325 AM EDT Fri Nov 5 2021

...FROST ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS
MORNING...

* WHAT...Temperatures as low as 33 will result in frost 
  formation.

* WHERE...Upstate South Carolina, plus the Thermal Belt areas of 
  the North Carolina foothills, and a portion of Metro Charlotte.

* WHEN...Through 10 AM EDT this morning.

* IMPACTS...Frost could kill sensitive outdoor vegetation if 
  left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

ARK
029 
WWUS72 KGSP 051340
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
940 AM EDT Fri Nov 5 2021

NCZ035>037-056-057-068>070-072-502-504-506-SCZ009-051445-
/O.EXP.KGSP.FZ.W.0005.000000T0000Z-211105T1400Z/
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Cabarrus-Greater Caldwell-Greater Burke-Eastern McDowell-York-
Including the cities of Bethlehem, Ellendale, Millersville, 
Taylorsville, Hiddenite, Stony Point, Statesville, Mooresville, 
Farmington, Fork Church, Mocksville, Advance, Hickory, Newton, 
St. Stephens, Salisbury, Shelby, Kings Mountain, Lincolnton, 
Crouse, Gastonia, Concord, Kannapolis, Kings Creek, Lenoir, 
Sawmills, Granite Falls, Morganton, Pleasant Grove, Valdese, 
Marion, Nebo, Dysartsville, Fero, Glenwood, Catawba, 
and Rock Hill
940 AM EDT Fri Nov 5 2021

...FREEZE WARNING WILL EXPIRE AT 10 AM EDT THIS MORNING...

Temperatures continue to warm across the area and will be above
freezing soon. Therefore, the warning will expire on time.

$$

NCZ071-082-508-510-SCZ001>008-010>014-019-051445-
/O.EXP.KGSP.FR.Y.0007.000000T0000Z-211105T1400Z/
Mecklenburg-Union NC-Greater Rutherford-Eastern Polk-
Oconee Mountains-Pickens Mountains-Greenville Mountains-
Greater Oconee-Greater Pickens-Greater Greenville-Spartanburg-
Cherokee-Anderson-Abbeville-Laurens-Union SC-Chester-Greenwood-
Including the cities of Charlotte, Monroe, Trinity, Indian Trail,
Weddington, Forest City, Rutherfordton, Spindale, Tryon, 
Columbus, Mill Spring, Mountain Rest, Walhalla, Westminster, 
Pumpkintown, Tigerville, Gowensville, Cleveland, Slater-Marietta,
Seneca, Oakway, Easley, Dacusville, Clemson, Greenville, Taylors,
Greer, Mauldin, Fork Shoals, Simpsonville, Berea, Spartanburg, 
Gaffney, Anderson, Abbeville, Calhoun Falls, Laurens, Clinton, 
Union, Monarch Mills, Chester, Cornwell, Great Falls, 
Ware Shoals, and Ninety Six
940 AM EDT Fri Nov 5 2021

...FROST ADVISORY WILL EXPIRE AT 10 AM EDT THIS MORNING...

Temperatures continue to warm across the area and will be above
the frost range soon. Therefore, the advisory will expire on 
time.

$$

What forecasters said that day

The local office's own words before this freeze warning 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 freeze warning went out at Nov 4, 3:21 AM EDT, 2 minutes earlier.

Area forecast discussion, Nov 4, 3:21 AM EDT, 2 minutes before
Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
321 AM EDT Thu Nov 4 2021

.SYNOPSIS...
Chilly surface high pressure, along with wet conditions, will
persist across the region for much of today, but with drying
developing tonight. Dry high pressure will then become more dominant
Friday through the weekend. Morning temperatures will continue to
flirt with frost and freeze conditions each morning through Sunday,
but with maximum temperatures steadily rebounding to near normal
temperatures by Sunday afternoon. Dry and warm high pressure will
continue through the middle of next week, with temperatures surging
well above normal.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 315 AM EDT Thursday: The last few hours have seen
scattered showers break out across the NC/SC border and points
south, as a modest 250mb jet streak pairs with a few ripples of
vort energy crossing the CWA to induce halfway decent synoptic
forcing. That jetlet will generally move eastward and is progged
to exit the forecast area by perhaps 08Z. That said,
increasingly robust DPVA forcing should be shifting north and
east out of northern Georgia within the next couple of hours, so
an abundance of midlevel moisture should allow increasing
showers to impact the SC Upstate and many of our NC mountain
counties. Would expect activity before dawn to be steady, and
broad in coverage, but light, as model soundings suggest that
basically everywhere below 850mb will be fairly dry, so the bulk
of what precipitation forms will struggle to reach the surface.
Much as predicted, all precip across the mountains is falling
as rain, except for at the highest elevations. Dewpoints seem to
have crept upward a bit, which has limited wet-bulbing compared
to earlier forecasts, and consequently should raise min temps
tonight by a solid degree across the mountains. All that to say,
while an inch of snow is well within reason across the higher
elevations of the Balsams and Smokies, the odds of much frozen
precip mixing below 3500ft seems ever lower. Could still see
isolated black ice developing on roadways, but still only at
high elevations.

Evaporative cooling should drive trends Thursday.  Despite moderate
WAA in place by dawn, cursory isentropic analysis suggests that most
of this will simply glide over top of a weak high-pressure dome,
resulting in steady precipitation well into the afternoon.  This,
in turn, will further cool the low-levels even as weak northeasterly
CAA continues beneath the 850mb level.  Have adjusted max temps
for Thursday a bit downward in response to this.

Thursday evening, a wave of low-level CAA will likely scour out
whatever shallow wedging has developed.  This will allow profiles
to dry out again from the bottom up, and the overnight hours will
likely see rapidly diminishing cloud cover across the NC Piedmont
and SC Upstate.  In these locations, temps will be allowed to
drop quite a bit in response to radiative cooling, and accordingly
most of our Piedmont/Upstate counties are at risk of frost/freeze
through dawn Friday.  Elsewhere, cloud cover should hang on long
enough to limit temps and frost threat.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
As of 300 am EDT Thursday: The 500 mb height field is expected to
remain somewhat "baggy" west of the base of the southern
Appalachians on Friday, indicating some measure of deepening in a
southern stream wave near the eastern Gulf Coast. However, the
resulting cyclogenesis near the southeast coastline now appears to
form even farther southeast Friday through Saturday than indicated
previously, so the expectation is for any moisture to remain shunted
southeast of our forecast area through the short term period. Thus,
the dominant feature will be drying north to northeast flow from
1030 mb surface high pressure centered over Pennsylvania and nosing
southward into the region. Given the chilly thicknesses in place,
this may mean something of a frost/freeze threat each morning from
early Friday to early Sunday. Friday is already addressed with the
suite of frost/freeze hazards issued starting tonight.

Temperatures and associated frost/freeze concerns are less certain
heading into the weekend. The surface high center should steadily
settle southward into the region which would normally lead to better
radiating conditions each night. However, there could be a lingering
NE flow gradient that keeps some mixing up over eastern sections
during the nighttime hours. Plus, it's possible that a Friday
morning freeze may end up shutting off a good chunk of western NC
counties, and possibly even some eastern Upstate counties, which
would preclude the need for more frost/freeze products there
over the weekend. Will keep a mention in the HWO for now.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
As of 305 am EDT Thursday: Upper level heights will rise in earnest
from the west for the latter half of the weekend, with a fairly
stout 585 dm H5 ridge arriving over the Deep South by Monday. The
upper ridge will move more squarely over the southeast coast on
Tuesday, with a continued warm up across the region. Dry high
pressure will dominate at the surface with maximum temperatures
warming to near climo by Sunday afternoon, 5 to 7 degrees above
climo by Monday, and 6 to 9 degrees above normal by Tuesday - with
plenty of low 70s east of the mountains.

Height falls across the Plains should lead to a steady breakdown of
the southeast ridge on Wednesday. A cold front may approach from the
northwest late in the period, but will keep Wednesday dry and warm
for now.

&&

.AVIATION /08Z THURSDAY THROUGH MONDAY/...
At KCLT and elsewhere: At present all TAF sites have VFR cigs.
KAVL has briefly dropped to MVFR a few times but quickly rebounded.
With moist upglide in place and set to continue well into the day
Thursday as in situ wedging continues to develop, light precip
should begin in earnest before dawn and continue well into Thursday
afternoon.  The general trend for the Upstate sites and KAVL is to
see cigs drop to MVFR a couple hours before dawn, then drop to IFR
by late morning.  Even the most optimistic model guidance suggests
that most sites will see a few hours of LIFR cigs beginning in
the early afternoon, then rebounding to IFR/MVFR by the evening.
Same general trend for KCLT, but delayed an hour or two compared
to other sites.  All sites will see -DZ/-RA through at least
00Z Friday, with VCSH warranted through the end of the period.
Winds will stay out of the northeast throughout the TAF period.

Outlook: Restrictions should rebound to VFR by Friday morning, with
high pressure building in through the weekend.  Inactive weather
should continue well into next week.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...Freeze Warning from 2 AM to 10 AM EDT Friday for NCZ035>037-
     056-057-068>070-072-502-504-506.
     Frost Advisory from 2 AM to 10 AM EDT Friday for NCZ071-082-
     508.
SC...Freeze Warning from 2 AM to 10 AM EDT Friday for SCZ009.
     Frost Advisory from 2 AM to 10 AM EDT Friday for SCZ008-013-
     014.

&&

SYNOPSIS...HG
NEAR TERM...MPR
SHORT TERM...HG
LONG TERM...HG
AVIATION...MPR
Hazardous weather outlook, Nov 3, 8:35 PM EDT, 6 hours 48 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
835 PM EDT Wed Nov 3 2021

NCZ033-048>053-059-063-064-501-503-505-041200-
Avery-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-
Northern Jackson-Southern Jackson-Transylvania-Caldwell Mountains-
Burke Mountains-McDowell Mountains-
835 PM EDT Wed Nov 3 2021

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...Tonight.

Light snow accumulations are expected for elevations at or above
3500 feet in portions of the North Carolina mountains tonight,
primarily along ridgetop locations. Elevations above 4000 feet could
see 1-2 inches of snow by daybreak. As temperatures approach
freezing overnight tonight into early Thursday morning across these
locations, slippery spots could develop on wet roadways.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The light snow will taper off Thursday morning, but it could mix
with light freezing rain or freezing drizzle before ending. No ice
accumulations are expected. Slippery roadways could persist through
mid-morning in isolated areas.

.SPOTTER INFORMATION STATEMENT...

None.

GAZ010-017-018-026-028-029-NCZ058-062-065-070-071-082-507>510-
SCZ001>014-019-041200-
Rabun-Habersham-Stephens-Franklin-Hart-Elbert-Graham-Macon-Henderson-
Gaston-Mecklenburg-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-
835 PM EDT Wed Nov 3 2021

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

.DAY ONE...Tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

None.

NCZ035>037-056-057-068-069-072-502-504-506-041200-
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Cabarrus-
Greater Caldwell-Greater Burke-Eastern McDowell-
835 PM EDT Wed Nov 3 2021

...FREEZE WATCH IN EFFECT FROM LATE THURSDAY NIGHT THROUGH FRIDAY
MORNING...

This Hazardous Weather Outlook is for piedmont North Carolina and
western North Carolina.

.DAY ONE...Tonight.

Hazardous weather is not expected at this time.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

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

 Freeze Watch.

.SPOTTER INFORMATION STATEMENT...

None.

JMP

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 4, 3:23 AM EDTFrost AdvisoryGSPMecklenburg, Polk, Rutherford, Union31 hr

Nearby

Freeze Warnings in North Carolina, 2021Freeze Warnings in South Carolina, 2021Every freeze 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.