Alert archive / North Carolina / Frost Advisories in 2012

Frost Advisory 9, NWS Greenville-Spartanburg, SC

October 31, 201216 counties in North Carolina; 7 counties in South Carolina; Elbert County, Georgia

NWS Greenville-Spartanburg, SC issued this frost advisory at Oct 31, 2012, 4:21 AM EDT for 16 counties in North Carolina; 7 counties in South Carolina; Elbert County, Georgia. It took effect at Nov 1, 2012, 12:00 AM EDT. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Oct 31, 2012, 4:21 AM EDT (08:21 UTC)
In effect from
Nov 1, 2012, 12:00 AM EDT
Expired
Nov 1, 2012, 9:00 AM EDT
In force
9 hr
Issued by
NWS Greenville-Spartanburg, SC
All 24 counties

Elbert 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, Cherokee County, SC, Chester County, SC, Greenwood County, SC, Laurens County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 80 km from the middle of the area, began a volume at 08:21 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, 8.4 hours before the alert went out and 169 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 2012-10-31Temperature 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°0°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 2012-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.193958Sfc1 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
1390 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

021 
WWUS72 KGSP 310821
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
421 AM EDT WED OCT 31 2012

...AREAS OF FROST EXPECTED TONIGHT...

.SKIES WILL CLEAR AND WINDS WILL BECOME LIGHT TONIGHT ACROSS THE
FOOTHILLS AND PIEDMONT OF NORTH CAROLINA AS WELL AS THE NORTHEAST
PART OF UPSTATE SOUTH CAROLINA. THIS COMBINED WITH THE COOL
AIRMASS IN PLACE OVER THE REGION WILL SET THE STAGE FOR AREAS OF
FROST LATE TONIGHT.

NCZ035>037-056-057-068>072-082-502-504-506-508-510-SCZ008-009-014-
311700-
/O.NEW.KGSP.FR.Y.0009.121101T0400Z-121101T1300Z/
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-CHEROKEE-YORK-
CHESTER-
INCLUDING THE CITIES OF...STATESVILLE...MOCKSVILLE...HICKORY...
SALISBURY...SHELBY...LINCOLNTON...GASTONIA...CHARLOTTE...
CONCORD...MONROE...GAFFNEY...ROCK HILL...CHESTER
421 AM EDT WED OCT 31 2012

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EDT THURSDAY.

* LOCATIONS...THE FOOTHILLS AND WESTERN PIEDMONT OF NORTH CAROLINA
  AND THE NORTHEAST PART OF UPSTATE SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...DAMAGE TO TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$
4 follow-up statements
617 
WWUS72 KGSP 311832
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
232 PM EDT WED OCT 31 2012

...AREAS OF FROST EXPECTED TONIGHT...

.SKIES WILL CLEAR AND WINDS WILL BECOME LIGHT TONIGHT ACROSS THE
FOOTHILLS AND PIEDMONT OF NORTH CAROLINA AS WELL AS THE NORTHEAST
PART OF UPSTATE SOUTH CAROLINA. THIS COMBINED WITH THE COOL
AIRMASS IN PLACE OVER THE REGION WILL SET THE STAGE FOR AREAS OF
FROST LATE TONIGHT.

NCZ035>037-056-057-068>072-082-502-504-506-508-510-SCZ008-009-014-
010800-
/O.CON.KGSP.FR.Y.0009.121101T0400Z-121101T1300Z/
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-CHEROKEE-YORK-
CHESTER-
INCLUDING THE CITIES OF...STATESVILLE...MOCKSVILLE...HICKORY...
SALISBURY...SHELBY...LINCOLNTON...GASTONIA...CHARLOTTE...
CONCORD...MONROE...GAFFNEY...ROCK HILL...CHESTER
232 PM EDT WED OCT 31 2012

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...

* LOCATIONS...THE FOOTHILLS AND WESTERN PIEDMONT OF NORTH 
  CAROLINA AND THE NORTHEAST PART OF UPSTATE SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...DAMAGE TO TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

ARK
590 
WWUS72 KGSP 312346
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
746 PM EDT WED OCT 31 2012

...AREAS OF FROST EXPECTED OVERNIGHT...

.SKIES WILL BE CLEAR TO PARTLY CLOUDY DURING THE OVERNIGHT
HOURS...WITH WINDS GRADUALLY DIMINISHING ACROSS THE FOOTHILLS AND
PIEDMONT OF NORTH CAROLINA...AS WELL AS THE PIEDMONT OF UPSTATE
SOUTH CAROLINA AND NORTHEAST GEORGIA. THESE CONDITIONS WILL
COMBINE WITH THE COOL AIRMASS IN PLACE ACROSS THE REGION TO ALLOW
AREAS OF FROST TO DEVELOP OVERNIGHT.

GAZ029-SCZ011>013-019-011300-
/O.EXA.KGSP.FR.Y.0009.121101T0400Z-121101T1300Z/
ELBERT-ABBEVILLE-LAURENS-UNION SC-GREENWOOD-
INCLUDING THE CITIES OF...ELBERTON...ABBEVILLE...LAURENS...
UNION...GREENWOOD
746 PM EDT WED OCT 31 2012

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT
THURSDAY...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EDT THURSDAY.

* LOCATIONS...ABBEVILLE...LAURENS...UNION AND GREENWOOD COUNTIES
  IN SOUTH CAROLINA AS WELL AS ELBERT COUNTY IN NORTHEAST GEORGIA.

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST AT 5 MPH OR LESS OVERNIGHT.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

NCZ035>037-056-057-068>072-082-502-504-506-508-510-SCZ008-009-014-
011300-
/O.CON.KGSP.FR.Y.0009.121101T0400Z-121101T1300Z/
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-CHEROKEE-YORK-
CHESTER-
INCLUDING THE CITIES OF...STATESVILLE...MOCKSVILLE...HICKORY...
SALISBURY...SHELBY...LINCOLNTON...GASTONIA...CHARLOTTE...
CONCORD...MONROE...GAFFNEY...ROCK HILL...CHESTER
746 PM EDT WED OCT 31 2012

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT THURSDAY...

* LOCATIONS...THE FOOTHILLS AND WESTERN PIEDMONT OF NORTH CAROLINA
  AS WELL AS THE EASTERN UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

GERAPETRITIS
610 
WWUS72 KGSP 010809
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
409 AM EDT THU NOV 1 2012

...AREAS OF FROST EXPECTED THIS MORNING AND AGAIN EARLY FRIDAY...

.AREAS OF FROST WILL AFFECT THE WESTERN PIEDMONT OF NORTH CAROLINA
AND THE NORTHEAST PARTS OF UPSTATE SOUTH CAROLINA THIS MORNING.
THE AIRMASS IS TOO DRY CLOSER TO THE MOUNTAINS AND OVER THE REST
OF THE UPSTATE AND THE ADVISORY HAS BEEN CANCELLED FARTHER TO THE
WEST. FROST WILL DEVELOP AGAIN FRIDAY MORNING OVER A LARGER
AREA...INCLUDING MOST OF THE UPSTATE AND THE NORTH CAROLINA
FOOTHILLS.

GAZ029-NCZ502-504-506-508-510-SCZ011-012-019-011700-
/O.CAN.KGSP.FR.Y.0009.000000T0000Z-121101T1300Z/
/O.NEW.KGSP.FR.Y.0010.121102T0400Z-121102T1300Z/
ELBERT-GREATER CALDWELL-GREATER BURKE-EASTERN MCDOWELL-
GREATER RUTHERFORD-EASTERN POLK-ABBEVILLE-LAURENS-GREENWOOD-
INCLUDING THE CITIES OF...ELBERTON...ABBEVILLE...LAURENS...
GREENWOOD
409 AM EDT THU NOV 1 2012

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT
FRIDAY...
...FROST ADVISORY IS CANCELLED FOR THIS MORNING...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EDT FRIDAY. THE FROST ADVISORY HAS BEEN CANCELLED FOR THIS
MORNING.

* LOCATIONS...THE FOOTHILLS OF NORTH CAROLINA AS WELL AS THE
  SOUTHERN UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S FRIDAY MORNING. 

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER 
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

NCZ035>037-056-057-068>072-082-SCZ008-009-013-014-011700-
/O.NEW.KGSP.FR.Y.0010.121102T0400Z-121102T1300Z/
/O.CON.KGSP.FR.Y.0009.000000T0000Z-121101T1300Z/
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-CHEROKEE-YORK-UNION SC-CHESTER-
INCLUDING THE CITIES OF...STATESVILLE...MOCKSVILLE...HICKORY...
SALISBURY...SHELBY...LINCOLNTON...GASTONIA...CHARLOTTE...
CONCORD...MONROE...GAFFNEY...ROCK HILL...UNION...CHESTER
409 AM EDT THU NOV 1 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM EDT THIS MORNING...
...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EDT FRIDAY.

* LOCATIONS...THE WESTERN PIEDMONT OF NORTH CAROLINA AS WELL AS
  THE EASTERN UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S. 

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER 
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

GAZ018-026-028-SCZ004>007-010-011700-
/O.NEW.KGSP.FR.Y.0010.121102T0400Z-121102T1300Z/
STEPHENS-FRANKLIN-HART-GREATER OCONEE-GREATER PICKENS-
GREATER GREENVILLE-SPARTANBURG-ANDERSON-
INCLUDING THE CITIES OF...TOCCOA...HARTWELL...GREENVILLE...
SPARTANBURG...ANDERSON
409 AM EDT THU NOV 1 2012

...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT
FRIDAY...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EDT FRIDAY.

* LOCATIONS...NORTHEAST GEORGIA AND THE CENTRAL AND WESTERN
  UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID TO UPPER 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER 
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

MCAVOY
222 
WWUS72 KGSP 011304
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
904 AM EDT THU NOV 1 2012

...AREAS OF FROST EXPECTED LATE TONIGHT AND EARLY FRIDAY...

.AREAS OF FROST WILL DEVELOP AGAIN LATE TONIGHT AND CONTINUE INTO
FRIDAY MORNING OVER MOST OF THE UPSTATE AND THE NORTH CAROLINA
FOOTHILLS AND PIEDMONT.

NCZ035>037-056-057-068>072-082-SCZ008-009-013-014-012115-
/O.EXP.KGSP.FR.Y.0009.000000T0000Z-121101T1300Z/
/O.CON.KGSP.FR.Y.0010.121102T0400Z-121102T1300Z/
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-
MECKLENBURG-CABARRUS-UNION NC-CHEROKEE-YORK-UNION SC-CHESTER-
INCLUDING THE CITIES OF...STATESVILLE...MOCKSVILLE...HICKORY...
SALISBURY...SHELBY...LINCOLNTON...GASTONIA...CHARLOTTE...
CONCORD...MONROE...GAFFNEY...ROCK HILL...UNION...CHESTER
904 AM EDT THU NOV 1 2012

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT FRIDAY...
...FROST ADVISORY HAS EXPIRED...

* LOCATIONS...THE WESTERN PIEDMONT OF NORTH CAROLINA AS WELL AS 
  THE EASTERN UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER 
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

GAZ018-026-028-029-NCZ502-504-506-508-510-SCZ004>007-010>012-019-
012115-
/O.CON.KGSP.FR.Y.0010.121102T0400Z-121102T1300Z/
STEPHENS-FRANKLIN-HART-ELBERT-GREATER CALDWELL-GREATER BURKE-
EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-ANDERSON-ABBEVILLE-
LAURENS-GREENWOOD-
INCLUDING THE CITIES OF...TOCCOA...HARTWELL...ELBERTON...
GREENVILLE...SPARTANBURG...ANDERSON...ABBEVILLE...LAURENS...
GREENWOOD
904 AM EDT THU NOV 1 2012

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EDT FRIDAY...

* LOCATIONS...NORTHEAST GEORGIA AND THE CENTRAL AND WESTERN 
  UPSTATE OF SOUTH CAROLINA

* TEMPERATURES...LOWS IN THE MID 30S.

* WINDS...WEST 5 MPH OR LESS.

* IMPACTS...AREAS OF FROST WILL CAUSE DAMAGE TO TENDER 
  VEGETATION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

What forecasters said that day

The local office's own words before this frost 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 frost advisory went out at Oct 31, 3:54 AM EDT, 27 minutes earlier.

Area forecast discussion, Oct 31, 3:54 AM EDT, 27 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
354 AM EDT WED OCT 31 2012

.SYNOPSIS...
HIGH PRESSURE WILL GRADUALLY BUILD ACROSS THE SOUTHERN APPALACHIAN
REGION TODAY THROUGH SATURDAY. ANOTHER LOW PRESSURE SYSTEM WILL
ORGANIZE OVER THE CENTRAL PLAINS LATE THIS WEEK...TRACKING ACROSS
THE WESTERN CAROLINAS AND NORTHEAST GEORGIA EARLY NEXT WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
A DEEP LONG WAVE TROUGH WILL REMAIN OVER THE EASTERN STATES TODAY
AND TONIGHT...THOUGH THE STRONG UPPER LOW EMBEDDED WITHIN THE TROUGH
WILL LIFT TO THE NORTH DURING THIS TIME. A SHORT WAVE WILL CLIP THE
NRN MTNS THIS MORNING...WHICH MAY HELP TO KEEP SNOW SHOWERS GOING
UNTIL AROUND NOON OVER THESE ZONES. HEAVY SNOW HAS ENDED AND UPSLOPE
MOISTURE IS ONLY A FEW HOURS AWAY FROM PULLING OUT OF THE SRN MTN
ZONES. WHILE PCPN WILL CONTINUE FOR A WHILE LONGER OVER THE NRN
MTNS...TEMPS AT ALL BUT THE HIGHEST ELEVATIONS SHOULD RISE ABOVE
FREEZING AFTER NOON. THEREFORE I/VE CANCELLED THE WINTER STORM
WARNING A LITTLE EARLY AND REPLACED IT WITH A WINTER WEATHER
ADVISORY THAT RUNS THROUGH NOON. THIS WILL ALSO HELP TO KEEP FOLKS
AWARE OF AREAS OF BLACK ICE WHICH WILL AFFECT MANY SECONDARY ROADS
AT HIGHER ELEVATIONS EARLY IN THE DAY.

OUTSIDE THE MOUNTAINS IT WILL BE A NICER DAY AS SKIES GRADUALLY
CLEAR FROM SOUTH TO NORTH. MAX TEMPS WILL BE A COUPLE CATEGORIES
WARMER THAN TUESDAY.

THE NEXT CONCERN IS FROST TONIGHT. WITH THE GRADIENT WEAKENING AND
NO SIGNIFICANT COLD ADVECTION OVERNIGHT...I EXPECT MUCH OF THE NC
FOOTHILLS AND PIEDMONT TO DECOUPLE. THE SAME APPLIES TO THE NRN
UPSTATE. ONE LIMITING FACTOR IS A BAND OF VERY DRY AIR THAT APPEARS
TO BE A REMNANT OF THE SUBSIDENCE AROUND SANDY. DEPOINTS OVER NRN
AND CENTRAL GA MIXED INTO THE LOW 20S AND EVEN UPPER TEENS YDAY.
MEANWHILE MUCH OF THE UPSTATE AND WRN NC STAYED IN THE LOW 30S. THAT
DRY AIR WILL GRADUALLY LIFT NORTHWARD AS THE TROF SLOWLY LIFTS
NORTH. THIS WILL SPREAD DRY AIR ACROSS OUR NE GA COUNTIES AND THE
SRN UPSTATE OVERNIGHT WHICH SHOULD LIMIT FROST POTENTIAL. FARTHER TO
THE NORTH...THE COMBINATION OF LIGHTER WINDS AND HIGHER DEWPOINTS
WILL LEAD TO MUCH BETTER CONDITIONS FOR FROST AND A FROST ADVISORY
WILL BE ISSUED.

THE GROWING SEASON ENDS AFTER TONIGHT OVER THE MOUNTAINS OF
THE WESTERN CAROLINAS AND NE GA...SO WE DON/T NEED TO WORRY ABOUT
FROST OR FREEZE PRODUCTS FOR THESE ZONES THIS SEASON. WE WILL ISSUE
A PNS PUBLICIZING THIS FACT LATER IN THE SHIFT.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
AT 3 AM EDT WEDNESDAY...ON THURSDAY...SHORT RANGE MODELS INDICATE
THAT THE FORECAST AREA WILL REMAIN UNDER DEEP DRY AIR AS THE MID
LEVEL TROF AXIS SHIFTS EAST. LLVL TEMPERATURES AND THICKNESSES WILL
WARM GRADUALLY THROUGH THE DAY. IN ADDITION...WEST WINDS WILL
STRENGTHEN THROUGH THE DAY...BECOMING MARGINALLY GUSTY DURING THE
AFTERNOON. THE COMBINATION OF GOOD INSOLATION...RECOVERING LLVL
TEMPERATURE PROFILES...AND DOWNSLOPE FLOW WILL FAVOR HIGH
TEMPERATURES RANGING FROM THE MID 40S TO NEAR 50 ACROSS THE
MTNS...AND U50S TO NEAR 60 ACROSS THE FOOTHILLS AND PIEDMONT. MIXING
TO H85 WILL KEEP DEWPOINTS IN THE 20S DURING THE AFTERNOON. RH
VALUES ARE FORECAST TO FALL BELOW 25 PERCENT ACROSS THE UPSTATE OF
SC AND NE GA. THE GUSTY WINDS AND LOW RH WILL INCREASE THE FIRE
DANGER AGAIN ON THURSDAY.

THURSDAY NIGHT...THE MAIN FORECAST CHALLENGE WILL BE THE APPROACH OF
A WEAK VORT MAX ON MID LEVEL NW FLOW. THE 0Z RUN OF THE NAM AND GFS
INDICATE THAT CLOUD COVER WILL INCREASE AHEAD OF THE FEATURE DURING
THE LATE NIGHT HOURS. IN ADDITION...BOTH SOLUTIONS GENERATE PATCHY
AREAS OF QPF ALONG THE TN/NC BORDER AROUND DAWN FRIDAY. I WILL
INCREASE THE CLOUD COVER THIS FORECAST PACKAGE. GIVEN THE LOW RH
VALUES FROM THURSDAY...I EXPECT THAT PRECIP WILL LARGELY EVAPORATE
DURING THE NIGHT. HOWEVER...FORECAST SOUNDING AROUND 12Z FRI APPEAR
TO SUPPORT PRECIP REACHING THE GROUND. GIVEN THE WEAK UPPER SUPPORT
AND LESS THAN IDEAL LLVL WIND FIELDS...I WILL FORECAST ONLY CHC POPS
FOR PRE DAWN SN ACROSS THE MTNS TURNING TO RA AFTER SUNRISE.
OTHERWISE...THE MAIN FORECAST CONCERN WILL THE DEVELOPMENT OF
ANOTHER ROUND OF FOOTHILL AND PIEDMONT FROST. CLOUD COVER AND DRY
AIR WILL MAKE THE PLACEMENT AND TIMING OF FROST DEVELOPMENT LESS
FAVORABLE. GIVEN CONDENSATION PRESSURE DEFICITS ABOVE 50 MBS...I
WILL ONLY INDICATE PATCHY FROST ACROSS THE NC FOOTHILLS AND PIEDMONT
VALLEY AREAS.

FRIDAY...WINDS WILL SHIFT FROM THE SW WITH THE PASSAGE OF THE VORT
MAX AND DEEPENING LOW ACROSS THE CENTRAL PLAINS. H5 TEMPS WILL WARM
3 TO 5 DEGREES ACROSS NE GA AND SC. SKY SHOULD REMAIN MOSTLY TO
PARTLY SUNNY THROUGH THE DAY. GIVEN THE RETURN FLOW AND GOOD
INSOLATION...MAX TEMPERATURES WILL LIKELY PEAK WITHIN 5 DEGREE OF
NORMAL.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AT 330 AM EDT WEDNESDAY...THE EXTENDED PERIOD WILL BE DOMINATED BY A
POSSIBLE DYNAMIC SYSTEM THAT COULD PASS OVER THE REGION SUNDAY AND
MONDAY. THE GFS AND ECMWF INDICATE THAT A POSITIVELY TILTED TROUGH
WILL RIPPLE ACROSS THE SOUTHERN AND CENTRAL APPALACHIANS BY 12Z MON.
THE QG FORCING ASSOCIATED WITH THE TROF SHOULD INCREASE ACROSS THE
FORECAST AREA SUNDAY NIGHT AND PEAK 12Z MON...LIFT WILL SHOULD END
DURING THE AFTERNOON HOURS. I WILL MAINTAIN A CHC POPS DURING THE
PERIOD OF LIFT...BUT WILL ADJUST THE PEAK POP AND END POINT OF CHC
POPS. TEMPERATURES THROUGH THE EVENT SHOULD SUPPORT AN ALL LIQUID
EVENT. IN FACT...WEAK INSTABILITY AND DEEPENING LIFT MAY SPAWN THE
DEVELOP OF ISO TSRA ACROSS THE MTNS AND SRN FOOTHILLS SUNDAY
AFTERNOON.

&&

.AVIATION /08Z WEDNESDAY THROUGH SUNDAY/...
AT KCLT...WSW WINDS EARLY THIS MORNING WILL TURN OUT OF THE WEST
AGAIN BY LATE MORNING. NOT EXPECTING ANY GUSTS THIS AFTN. A PERIOD
OF CIGS IN THE 4-5KT RANGE ARE POSSIBLE AFTER 15 UTC AS A WEAK UPPER
TROUGH CROSSES THE REGION. SKIES WILL CLEAR THIS EVENING.

AT KAVL...CIGS WILL CONTINUE TO FLIRT WITH MVFR CRITERIA THIS
MORNING. NOT EXPECTING ANY PCPN. WINDS WILL BE OUT OF THE
NW...GUSTING TO 25 KTS AT TIMES...MAINLY AFTER SUNRISE.

ELSEWHERE...WINDS WILL GENERALLY BE OUT OF THE WEST TODAY. GUSTS ARE
POSSIBLE OVER THE UPSTATE DURING THE AFTERNOON HOURS. CIGS MAY LOWER
TO AROUND 5KFT AT KHKY LATER IN THE MORNING AS AN UPPER LOW MOVES
THROUGH. SKIES WILL CLEAR ACROSS THE REGION TONIGHT.

OUTLOOK...DRIER WEATHER IS EXPECTED WEDNESDAY NIGHT THROUGH THE END
OF THE WEEK. SOME LOW CLOUDS MAY LINGER ON THE TN BORDER BUT SHOULD
NOT AFFECT TAF SITES...WHICH SHOULD REMAIN VFR.

AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE
PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE
CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)...

WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM

&&

.FIRE WEATHER...
RELATIVE HUMIDITY VALUES WILL FALL TO AROUND 25 PERCENT FROM
STEPHENS COUNTY SOUTH TO ELBERT COUNTY THIS AFTERNOON. IN
ADDITION...WEST WINDS WILL INCREASE ACROSS THE REGION TODAY...PEAKING
THIS AFTERNOON WITH GUSTS NEAR 30 MPH. WE WILL ISSUE A FIRE DANGER
STATEMENT TO HIGHLIGHT INCREASE FIRE DANGER BETWEEN NOON AND 8 PM.

ON THURSDAY...DEWPOINTS ACROSS NE GA AND THE UPSTATE OF SC WILL
REMAIN IN THE 20S THROUGH THE DAY. RH VALUES MAY FALL INTO THE LOWER
20 PERCENT RANGE ACROSS THE UPPER SAVANNAH RIVER VALLEY AND THE
UPSTATE OF SC FOR 4 TO 5 HOURS. IN ADDITION...MARGINALLY GUSTY WEST
WINDS WILL DEVELOP DURING THE AFTERNOON.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...WINTER WEATHER ADVISORY UNTIL NOON EDT TODAY FOR NCZ033-
     048>052.
     FROST ADVISORY FROM MIDNIGHT TONIGHT TO 9 AM EDT THURSDAY FOR
     NCZ035>037-056-057-068>072-082-502-504-506-508-510.
SC...FROST ADVISORY FROM MIDNIGHT TONIGHT TO 9 AM EDT THURSDAY FOR
     SCZ008-009-014.

&&

SYNOPSIS...NED
NEAR TERM...MCAVOY
SHORT TERM...NED
LONG TERM...NED
AVIATION...MCAVOY
FIRE WEATHER...NED
Hazardous weather outlook, Oct 30, 8:35 PM EDT, 7 hours 46 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
835 PM EDT TUE OCT 30 2012

NCZ033-048>053-059-010045-
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-
NORTHERN JACKSON-
835 PM EDT TUE OCT 30 2012

...WINTER STORM WARNING IN EFFECT UNTIL 6 AM EDT WEDNESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER STORM WARNING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SNOW ACCUMULATIONS TO
THE NATIONAL WEATHER SERVICE.

GAZ010-017-018-026-028-029-NCZ035>037-056-057-062>065-068>072-082-
501>510-SCZ001>014-019-010045-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-
DAVIE-CATAWBA-ROWAN-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
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-
835 PM EDT TUE OCT 30 2012

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...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ058-010045-
GRAHAM-
835 PM EDT TUE OCT 30 2012

...WINTER WEATHER ADVISORY IN EFFECT UNTIL 6 AM EDT WEDNESDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   WINTER WEATHER ADVISORY.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SNOW ACCUMULATIONS TO
THE NATIONAL WEATHER SERVICE.

In the hours before

Special weather statement, Oct 31, 4:12 AM EDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
412 AM EDT WED OCT 31 2012

GAZ018-026-028-029-010000-
STEPHENS-FRANKLIN-HART-ELBERT-
412 AM EDT WED OCT 31 2012

..FIRE DANGER STATEMENT...

...HIGH FIRE DANGER CONDITIONS THIS AFTERNOON AND EARLY THIS EVENING
FOR PORTIONS OF NORTHEAST GEORGIA...

RELATIVE HUMIDITY VALUES OF 25 PERCENT OR LESS CAN BE EXPECTED FOR
SEVERAL HOURS THIS AFTERNOON AND EARLY THIS EVENING. WEST WINDS
THIS AFTERNOON WILL RANGE FROM 10 TO 15 MPH WITH GUSTS BETWEEN 25
TO 30 MPH. THE LOW HUMIDITY AND GUSTY CONDITIONS COMBINED WITH DRY
FUELS WILL INCREASE THE POTENTIAL FOR WILDFIRES DURING THE
AFTERNOON AND EARLY EVENING HOURS.

PLEASE REFER TO YOUR LOCAL BURN PERMITTING AUTHORITIES CONCERNING
WHETHER YOU MAY BURN OUTDOORS. IF YOU DO BURN OUTSIDE...USE EXTREME
CAUTION.

NED

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 31, 4:09 AM EDTWinter Weather AdvisoryGSPAvery, Haywood, Madison, Mitchell, Swain, Yancey8 hr

Nearby

Frost Advisories in North Carolina, 2012Frost Advisories in South Carolina, 2012Frost Advisories in Georgia, 2012Every frost advisory in 2012

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.