Heat Advisory 1, NWS Greenville-Spartanburg, SC

370 
WWUS72 KGSP 300130
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
930 PM EDT Thu Jul 29 2021

GAZ026-028-029-SCZ011-019-301000-
/O.CON.KGSP.HT.Y.0001.210730T1600Z-210731T0000Z/
Franklin-Hart-Elbert-Abbeville-Greenwood-
Including the cities of Royston, Gumlog, Lavonia, 
Franklin Springs, Canon, Hartwell, Nuberg, Reed Creek, Elberton, 
Fortsonia, Middleton, Ruckersville, Abbeville, Calhoun Falls, 
Ware Shoals, and Ninety Six
930 PM EDT Thu Jul 29 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM EDT FRIDAY...

* WHAT...Peak heat index values of 105 to 108 expected.

* WHERE...In South Carolina, Abbeville and Greenwood Counties. 
  In Georgia, Franklin, Hart and Elbert Counties.

* WHEN...From noon to 8 PM EDT Friday.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check in on relatives and neighbors. Young 
children and pets should never be left unattended in vehicles 
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or 
evening. Know the signs and symptoms of heat exhaustion and heat 
stroke. Wear lightweight and loose-fitting clothing when 
possible. To reduce risk during outdoor work, the Occupational 
Safety and Health Administration recommends scheduling frequent 
rest breaks in shaded or air conditioned environments. Anyone 
overcome by heat should be moved to a cool and shaded location. 
Heat stroke is an emergency! Call 9 1 1.

&&

$$

HG

496 
WWUS72 KGSP 300730
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
330 AM EDT Fri Jul 30 2021

GAZ026-028-029-SCZ011-019-301530-
/O.CON.KGSP.HT.Y.0001.210730T1600Z-210731T0000Z/
Franklin-Hart-Elbert-Abbeville-Greenwood-
Including the cities of Royston, Gumlog, Lavonia, 
Franklin Springs, Canon, Hartwell, Nuberg, Reed Creek, Elberton, 
Fortsonia, Middleton, Ruckersville, Abbeville, Calhoun Falls, 
Ware Shoals, and Ninety Six
330 AM EDT Fri Jul 30 2021

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 8 PM EDT
THIS EVENING...

* WHAT...Peak heat index values of 105 to 108 expected.

* WHERE...In South Carolina, Abbeville and Greenwood Counties. 
  In Georgia, Franklin, Hart and Elbert Counties.

* WHEN...From noon today to 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check in on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible, reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose-fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

464 
WWUS72 KGSP 301523
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
1123 AM EDT Fri Jul 30 2021

GAZ026-028-029-SCZ011-019-310000-
/O.CON.KGSP.HT.Y.0001.210730T1600Z-210731T0000Z/
Franklin-Hart-Elbert-Abbeville-Greenwood-
Including the cities of Royston, Gumlog, Lavonia, 
Franklin Springs, Canon, Hartwell, Nuberg, Reed Creek, Elberton, 
Fortsonia, Middleton, Ruckersville, Abbeville, Calhoun Falls, 
Ware Shoals, and Ninety Six
1123 AM EDT Fri Jul 30 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING...

* WHAT...Peak heat index values of 100 to 105 expected this
  afternoon.

* WHERE...In South Carolina, Abbeville and Greenwood Counties. 
  In Georgia, Hart, Elbert and Franklin Counties.

* WHEN...Until 8 PM EDT this evening.

* IMPACTS...Hot temperatures and high humidity may cause heat 
  illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$
Wimberley

365 
WWUS72 KGSP 302303
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
703 PM EDT Fri Jul 30 2021

GAZ026-028-029-SCZ011-019-310015-
/O.CAN.KGSP.HT.Y.0001.000000T0000Z-210731T0000Z/
Franklin-Hart-Elbert-Abbeville-Greenwood-
703 PM EDT Fri Jul 30 2021

...HEAT ADVISORY IS CANCELLED...

Heat Index values across the region are falling this evening and
the Heat Advisory for the lower Piedmont has been cancelled.

$$

HG

Area Forecast Discussion
National Weather Service Greenville-Spartanburg SC
158 PM EDT Thu Jul 29 2021

.SYNOPSIS...
Hot and dry high pressure extends into the region through Friday
allowing heat indices to climb near or into the low 100s outside the
mountains. Friday a cold front will approach the area gradually
sinking south across the Carolinas and northern Georgia throughout
the day. This front is expected to track south of the forecast area
Saturday before lifting north again into the area Sunday. This
frontal boundary will keep shower and thunderstorm chances around.
Early next week another cold front brings cooler weather along with
more shower and thunderstorm chances.

&&

.NEAR TERM /THROUGH FRIDAY/...
As of noon: A deep ridge centered over the Plains extends into
the Southeast this afternoon, maintaining above-normal temps. We
started the day off exceptionally humid, but as anticipated,
dewpoints largely mixed out enough to keep Heat Index out of
advisory territory. LCLs also have become high enough to keep
convection isolated.

An upper trough will remain entrenched over the NE CONUS thru
Friday, as an embedded cyclone over Newfoundland is replaced by a
shortwave. The shortwave will carry a cold front southward from
its current position north of the Ohio River, likely reaching
our northern CWA by morning. Some loosely organized storms will
continue along the front to our NW this evening, but with the bulk
of the upper forcing associated with the leading shortwave near the
Mid-Atlantic coast, it remains rather weak and CAMs generally let it
fizzle out before it makes it to our CWA. Decent lapse rates aloft
could however maintain some MUCAPE, which would linger from this
afternoon; it is thus conceivable storms could propagate into the
northern zones, or fire anew along the boundary. We will maintain
a small PoP in our north late tonight into Friday morning.

With very little upper support, surface plots from the synoptic
models suggest the front will slowly sag further south, remaining
near the southern border of NC by peak heating. Some enhancement
to convective initiation can be expected, and although subsidence
appears to be sufficient to minimize CAM response, instability
should rebound enough to warrant a chance PoP near the front.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/...
As of 300 AM EDT Thursday: The front is expected to remain
south of the forecast area Saturday. This will lead to only a
slight chance for isolated showers and thunderstorms. Saturday
night into Sunday the cold front is expected to lift back north
potentially tracking back into the southern tier of the CWA.
Shortwaves are expected to ride along this frontal boundary
Sunday increasing shower and thunderstorm chances. Since Sunday
looks like the better day for shower and thunderstorm activity,
have PoPs ranging from chance to likely. Temps Saturday and
Sunday will be noticeably cooler compared to Friday, but should
remain above normal. Another cold front approaches the CWA
towards the end of the forecast period.

&&

.LONG TERM /MONDAY THROUGH WEDNESDAY/...
As of 300 AM EDT Thursday: The pattern should remain fairly active
throughout the extended forecast period. Troughing will amplify
across the eastern CONUS while high pressure continues to dominate
in the western CONUS. Early next week another cold front tracks into
the western Carolinas and northeast Georgia and is expected to stall
on Tuesday before tracking just south of the CWA middle of next
week. This front will keep shower and thunderstorm chances around.
Currently have PoPs ranging from a chance to likely Monday and
Tuesday with only a slight chance to chance Wednesday and Thursday
as the frontal boundary should be just to our south. This front will
bring even cooler and below average high temps early to middle of
next week.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
At KCLT and elsewhere: VFR anticipated at the TAF sites. FEW-SCT
low-VFR cumulus are seen this afternoon with higher than typical
dewpoints across the Piedmont; mixing should raise these by late
afternoon. SHRA/TSRA chance too small to mention due to large-scale
subsidence. Winds will be fairly steady in the SW there. At KAVL,
drier air is present along with a NW wind which should continue. A
front sagging in from the north will introduce some cirrus which
will limit radiational cooling tonight, so valley fog is not
expected to be any more expansive than it was this morning. The
front will induce a gradual wind shift to WNW/NW by midday across
the Piedmont, and its presence will enhance convective initiation
in what would otherwise be a day of sparse convection similar to
today. PROB30 already included at KCLT along with low VFR cumulus.

Outlook: Increasing shower and thunderstorm chances develop over
the weekend with stalled front. Early morning fog and low stratus
will once again be possible each morning.

Confidence Table...

            18-24Z        00-06Z        06-12Z        12-18Z
KCLT       High 100%     High 100%     High 100%     High 100%
KGSP       High 100%     High 100%     High 100%     High 100%
KAVL       High 100%     High 100%     High 100%     High 100%
KHKY       High 100%     High 100%     High 100%     High 100%
KGMU       High 100%     High 100%     High 100%     High 100%
KAND       High 100%     High 100%     High 100%     High 100%

The percentage reflects the number of guidance members agreeing
with the scheduled TAF issuance flight rule category. Complete hourly
experimental aviation forecast consistency tables are available at
the following link:

www.weather.gov/gsp/aviation

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...None.
NC...None.
SC...None.

&&

SYNOPSIS...AP
NEAR TERM...Wimberley
SHORT TERM...AP
LONG TERM...AP
AVIATION...Wimberley

Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
336 AM EDT Thu Jul 29 2021

GAZ010-017-NCZ033-048>053-058-059-062>065-501>507-509-300745-
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-
336 AM EDT Thu Jul 29 2021

This Hazardous Weather Outlook is for northeast Georgia and western
North Carolina.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.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-SCZ001>014-
019-300745-
Stephens-Franklin-Hart-Elbert-Alexander-Iredell-Davie-Catawba-Rowan-
Cleveland-Lincoln-Gaston-Mecklenburg-Cabarrus-Union NC-
Greater Rutherford-Eastern Polk-Oconee Mountains-Pickens Mountains-
Greenville Mountains-Greater Oconee-Greater Pickens-
Greater Greenville-Spartanburg-Cherokee-York-Anderson-Abbeville-
Laurens-Union SC-Chester-Greenwood-
336 AM EDT Thu Jul 29 2021

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

.DAY ONE...Today and tonight.

High humidity combined with high temperatures climbing into the mid
to upper 90s, will allow heat indices to range from 100 to 105
degrees today. These will be the hottest conditions of the year so
far, which could cause stress to those without access to air
conditioning and to those working outside.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

High humidity combined with high temperatures climbing into the mid
to upper 90s, will allow heat indices to range from 100 to 105
degrees again on Friday. These will be the hottest conditions of the
year so far, which could cause stress to those without access to air
conditioning and to those working outside.

.SPOTTER INFORMATION STATEMENT...

None.