Winter Storm Warning 2, NWS Columbia, SC

572 
WWUS42 KCAE 211716
WSWCAE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Columbia SC
1216 PM EST Tue Jan 21 2025

SCZ027>029-031-220415-
/O.UPG.KCAE.WW.Y.0003.250121T2100Z-250122T1400Z/
/O.EXA.KCAE.WS.W.0002.250121T2100Z-250122T1400Z/
Lexington-Richland-Lee-Sumter-
Including the cities of Seven Oaks, Oak Grove,
Batesburg-Leesville, Lexington, Sumter, Bishopville, Red Bank,
Cayce, Columbia, and West Columbia
1216 PM EST Tue Jan 21 2025

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 9 AM 
EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations of around two 
  inches, with locally higher amounts possible.

* WHERE...Lee, Lexington, Richland, and Sumter Counties.

* WHEN...From 4 PM this afternoon to 9 AM EST Wednesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Tuesday 
  evening and Wednesday morning commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in 
your vehicle in case of an emergency. The latest road conditions for 
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

GAZ063>065-077-SCZ030-035-037-038-041-135>137-220415-
/O.CON.KCAE.WS.W.0002.250121T2100Z-250122T1400Z/
McDuffie-Columbia-Richmond-Burke-Aiken-Barnwell-Calhoun-Clarendon-
Bamberg-Northwestern Orangeburg-Central Orangeburg-Southeastern
Orangeburg-
Including the cities of North, Neeses, Orangeburg, Eutawville,
Holly Hill, Bamberg, Barnwell, Santee, Waynesboro, Denmark,
Branchville, Evans, Thomson, Elloree, St. Matthews, North
Augusta, Brookdale, Blackville, Manning, Summerton, Aiken,
Williston, Bowman, Augusta, Martinez, and Springfield
1216 PM EST Tue Jan 21 2025

...WINTER STORM WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON 
TO 9 AM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations between 1 and 3 
  inches, with locally higher amounts possible.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...From 4 PM this afternoon to 9 AM EST Wednesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Tuesday 
  evening and Wednesday morning commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in 
your vehicle in case of an emergency. The latest road conditions for 
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

GAZ040-SCZ016-018-020>022-025-026-115-116-220415-
/O.CON.KCAE.WW.Y.0003.250121T2100Z-250122T1400Z/
Lincoln-Chesterfield-McCormick-Newberry-Fairfield-Kershaw-
Edgefield-Saluda-Northern Lancaster-Southern Lancaster-
Including the cities of Saluda, Indian Land, Pageland, Van Wyck,
Camden, Andrew Jackson State Park, Lincolnton, Edgefield, Murphys
Estates, Cheraw, Community of Almond Glen, Clarks Hill,
Lancaster, Springdale, Carolina Commons Shopping Center,
Lancaster Mill, Lugoff, Ridge Spring, Elgin, Johnston, McCormick,
Winnsboro Mills, Newberry, and Winnsboro
1216 PM EST Tue Jan 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 4 PM THIS 
AFTERNOON TO 9 AM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations up to one inch.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...From 4 PM this afternoon to 9 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Tuesday evening and Wednesday morning 
  commutes.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for the state you are calling from can be obtained by 
calling 5 1 1.

&&

$$

BC

757 
WWUS42 KCAE 220205
WSWCAE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Columbia SC
905 PM EST Tue Jan 21 2025

GAZ063>065-077-SCZ027>031-035-037-038-041-135>137-221400-
/O.CON.KCAE.WS.W.0002.000000T0000Z-250122T1400Z/
McDuffie-Columbia-Richmond-Burke-Lexington-Richland-Lee-Aiken-
Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northwestern Orangeburg-
Central Orangeburg-Southeastern Orangeburg-
Including the cities of Augusta, Sumter, Holly Hill, Eutawville,
Martinez, Lexington, Blackville, St. Matthews, Bowman, Santee,
Manning, Summerton, Branchville, Evans, Thomson,
Batesburg-Leesville, Aiken, Barnwell, North, Seven Oaks, Red
Bank, Bamberg, Neeses, Orangeburg, Bishopville, North Augusta,
Denmark, Elloree, Waynesboro, Columbia, Williston, Springfield,
Brookdale, Cayce, West Columbia, and Oak Grove
905 PM EST Tue Jan 21 2025

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 9 AM EST WEDNESDAY...

* WHAT...Snow expected. Total snow accumulations between 1 and 3 
  inches, with locally higher amounts possible.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...Until 9 AM EST Wednesday.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous. Plan on slippery road 
  conditions. The hazardous conditions could impact the Wednesday 
  morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in 
your vehicle in case of an emergency. The latest road conditions for 
the state you are calling from can be obtained by calling 5 1 1.

&&

$$

GAZ040-SCZ016-018-020>022-025-026-115-116-221400-
/O.CON.KCAE.WW.Y.0003.000000T0000Z-250122T1400Z/
Lincoln-Chesterfield-McCormick-Newberry-Fairfield-Kershaw-
Edgefield-Saluda-Northern Lancaster-Southern Lancaster-
Including the cities of Community of Almond Glen, Elgin, Cheraw,
Clarks Hill, Lancaster, Lincolnton, Winnsboro, Murphys Estates,
Carolina Commons Shopping Center, Springdale, Edgefield,
Lancaster Mill, McCormick, Ridge Spring, Johnston, Andrew Jackson
State Park, Van Wyck, Saluda, Pageland, Winnsboro Mills,
Newberry, Camden, Indian Land, and Lugoff
905 PM EST Tue Jan 21 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST 
WEDNESDAY...

* WHAT...Snow. Total snow accumulations up to one inch.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...Until 9 AM EST Wednesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the Wednesday morning commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. The latest road 
conditions for the state you are calling from can be obtained by 
calling 5 1 1.

&&

$$

CJR

886 
WWUS42 KCAE 220846
WSWCAE

URGENT - WINTER WEATHER MESSAGE
National Weather Service Columbia SC
346 AM EST Wed Jan 22 2025

GAZ063>065-077-SCZ027>031-035-037-038-041-135>137-221400-
/O.CAN.KCAE.WS.W.0002.000000T0000Z-250122T1400Z/
/O.EXA.KCAE.WW.Y.0003.000000T0000Z-250122T1400Z/
McDuffie-Columbia-Richmond-Burke-Lexington-Richland-Lee-Aiken-
Sumter-Barnwell-Calhoun-Clarendon-Bamberg-Northwestern Orangeburg-
Central Orangeburg-Southeastern Orangeburg-
Including the cities of Eutawville, Neeses, Augusta, Thomson,
Martinez, Springfield, Barnwell, Waynesboro, Orangeburg, Oak
Grove, Branchville, West Columbia, Sumter, Denmark, Seven Oaks,
Red Bank, Batesburg-Leesville, Bowman, Evans, Summerton,
Brookdale, Elloree, Columbia, Manning, Holly Hill, Aiken,
Lexington, Blackville, Bamberg, St. Matthews, Bishopville,
Santee, Williston, Cayce, North Augusta, and North
346 AM EST Wed Jan 22 2025

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...
...WINTER STORM WARNING IS CANCELLED...

* WHAT...Slick and hazardous roads due to lingering snowpack and 
  black ice.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...Until 9 AM EST this morning.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for slippery roads. Slow down and use caution while 
driving. If you are going outside, watch your first few steps taken 
on stairs, sidewalks, and driveways. These surfaces could be icy and 
slippery, increasing your risk of a fall and injury.

&&

$$

GAZ040-SCZ016-018-020>022-025-026-115-116-221400-
/O.CON.KCAE.WW.Y.0003.000000T0000Z-250122T1400Z/
Lincoln-Chesterfield-McCormick-Newberry-Fairfield-Kershaw-
Edgefield-Saluda-Northern Lancaster-Southern Lancaster-
Including the cities of Saluda, Springdale, Lugoff, Newberry,
Lincolnton, Lancaster Mill, Van Wyck, Camden, Carolina Commons
Shopping Center, Clarks Hill, Cheraw, McCormick, Winnsboro Mills,
Lancaster, Indian Land, Ridge Spring, Elgin, Edgefield, Andrew
Jackson State Park, Pageland, Community of Almond Glen, Johnston,
Murphys Estates, and Winnsboro
346 AM EST Wed Jan 22 2025

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS 
MORNING...

* WHAT...Slick and hazardous roads due to lingering snowpack and 
  black ice.

* WHERE...Portions of east central Georgia and central South 
  Carolina.

* WHEN...Until 9 AM EST this morning.

* IMPACTS...Roads, and especially bridges and overpasses, will 
  likely become slick and hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Be prepared for slippery roads. Slow down and use caution while 
driving. If you are going outside, watch your first few steps taken 
on stairs, sidewalks, and driveways. These surfaces could be icy and 
slippery, increasing your risk of a fall and injury.

&&

$$

MG

Area Forecast Discussion
National Weather Service Columbia SC
122 AM EST Tue Jan 21 2025

.SYNOPSIS...
Well below normal temperatures are expected through the week as
an anomalously deep trough and surface high pushes an arctic
air mass into the central and eastern US. A chance of snow remains
in the southeastern Midlands on Tuesday night into Wednesday
morning. Cold weather is expected to continue through Friday, with
one or more Cold Weather Advisories possible. Temperatures are
forecast to begin warming to near normal again over the weekend.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
Key Message(s):

- A Cold Weather Advisory is in effect tonight with wind chill
  values of 10 to 15 degrees overnight into Tuesday morning.

A 500 mb trough at the NAEFS climatological minimum is digging
into the central US. At the surface, an arctic air mass will
push into the Southeast with cold advection driving temperatures
down into the upper teens to low 20s tonight. As a surface
boundary backdoors into the forecast area from the north tonight
the pressure gradient will increase keeping winds up through
the morning. The NE winds may allow for Wind Chill values
between 10 to 15 degrees. Therefore, a Cold Weather Advisory is
in effect tonight for all of the SC Midlands and CSRA.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM WEDNESDAY/...
Key Message(s):

- Very cold temperatures continue through the short term.

- Winter storm remains on track to affect the region Tuesday late
  afternoon/evening.

- Winter Weather Advisory issued for the eastern Midlands.

Did I mention forecasting winter weather is so much fun?!?!?!?!
Anyway, one thing we remain highly confident about is the cold air
for Tuesday into Wednesday as arctic air continues to filter in from
the northwest. Afternoon highs are expected to be around 20 degrees
below normal for both days. Wednesday's highs will be partially
dependent on any snow cover from the expected winter system.
Overnight temps are expected to drop into the upper teens to lower
20s, but winds are expected to stay elevated causing wind chills in
the lower teens or single digits at times. Due to the cold temps
during the day and frigid temps overnight, we have extended the
Cold Weather Advisory until 10 am on Wednesday.

Now, for the "fun" part. Almost all of the 12z guidance has shifted
the upcoming storm track back to the north and west a bit as well,
which has led to an uptick in snow amounts for the forecast area.
Another trend some guidance has been showing is possibly an earlier
onset of the snowfall for the forecast area, which seems reasonable
given models don't typically handle initial warm air advection
precipitation well with these systems. The most likely onset time
remains in the 3-8 pm time period, however. It still looks like a
quick moving system, however, and is likely out of the area before
dawn. A limiting factor continues to be some dry air in the lower
levels, which could limit snow totals. A change with the latest
hires guidance is that the lower levels do moisten up for areas
south of the I-20 corridor, so confidence has increased for
accumulating snow for those areas. Confidence is highest for around
an inch of snow in the eastern Midlands, so we've issued a Winter
Weather Advisory for those areas. Still expecting a sharp gradient
between accumulating snow and no snow, but uncertainty remains in
exactly where that gradient will wind up. We'll continue to monitor
model trends to determine additional changes to forecast amounts and
if an expansion of the Winter Weather Advisory will be needed. As
we've been mentioned, the lingering cold air will likely cause any
snow on the ground to stick around a little longer than typical for
the area.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH MONDAY/...
Key Message(s):

- Increasing clouds Wednesday Night may limit cooling and the need
for another Cold Weather Advisory.

- Temperatures gradually warm through the extended.

Wednesday Night: Clouds increase Wednesday night as a weak area of
low pressure develops off the coast. The 12Z Canadian continues its
trend of producing freezing rain across the coastal plain, but no
longer has ice accumulations in our CWA. This, combined with the very
dry air mass in place and that fact that the deterministic GFS and
Euro do not show any precipitation during this time period, led me
to remove any precipitation chances from the forecast. Should any
precipitation fall during the period, it should be generally light
and focused along and east of I-95. The other question for Wednesday
night is whether these clouds will limit cooling enough that a Cold
Weather Advisory will NOT be needed. The current forecast calls for
minimum temperatures in the mid to upper teens so it will be another
cold night regardless of whether criteria is met.

Thursday should once again feature well below normal temperatures,
especially if there are clouds in place, but forecast highs are
about 5 degrees warmer than Tuesday and Wednesday. This will kick
off a gradual warming trend through the extended, with values
returning to near normal values by Sunday. Any additional
precipitation chances should hold off until near the end of the
current period, late Sunday night into Monday.

&&

.AVIATION /06Z TUESDAY THROUGH SATURDAY/...
High confidence in VFR conditions through the forecast period
although lowering cigs expected through the this afternoon and
evening.

Initial surface maps showing very dry air pushing in from the
north. Area of low pressure in the Gulf is continuing to track
eastward. This will help to spread moisture northeastward and
into the forecast area through the daytime hours.

Very few clouds to start off the forecast period, but mid and
upper level cloudiness will overspread the taf sites through 12z
this morning. Ceilings may continue to slowly lower through
the day, but conditions remaining vfr even through the onset of
any frozen precip late this afternoon. Speaking of precip, it is
anticipated that the dominant weather type across the taf sites
will remain in the form of snow. The leading edge is not
expected to be reaching the ground late this afternoon with the
amount of dry air in place, but as the lower level begins
moisten up, some light snow is expected between 20z-22z. Most
sites remain with only light snow, with the exception possibly
ogb where slightly a period of moderate snow and mvfr conditions
can not be ruled out at this time. Still just left -sn in all
locations for now and will fine tune if heavier snow band were
to begin setting up over eastern region of the cwa. Winds will
remain northerly through this afternoon, then shift more
northwesterly as the low moves off the Carolina coast this
evening.

.EXTENDED AVIATION OUTLOOK...Restrictions possible late tonight
into Wednesday morning as the low moves east of the area.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...Cold Weather Advisory until 10 AM EST Wednesday for SCZ016-018-
     020>022-025>031-035-037-038-041-115-116-135>137.
     Winter Weather Advisory from 5 PM this afternoon to 9 AM EST
     Wednesday for SCZ035-038-041-136-137.
GA...Cold Weather Advisory until 10 AM EST Wednesday for GAZ040-
     063>065-077.
     Winter Weather Advisory from 5 PM this afternoon to 9 AM EST
     Wednesday for GAZ077.

&&