Alert archive / North Carolina / Wind Advisories in 2015

Wind Advisory 7, NWS Greenville-Spartanburg, SC

February 11, 201517 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this wind advisory at Feb 11, 2015, 2:57 PM EST for 17 counties in North Carolina. It took effect at Feb 12, 2015, 7:00 AM EST. It was in force for 17 hr.

The area

The counties it named.

The facts

Issued
Feb 11, 2015, 2:57 PM EST (19:57 UTC)
In effect from
Feb 12, 2015, 7:00 AM EST
Expired
Feb 13, 2015, 12:00 AM EST
In force
17 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Graham County, NC, Haywood County, NC, Henderson County, NC, Jackson County, NC, Macon County, NC, Madison County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Swain County, NC, Transylvania County, NC, Yancey County, NC

The radar

The Greer radar (KGSP), 83 km from the middle of the area, began a volume at 20:02 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 12:00Z, 8.0 hours before the alert went out and 244 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 12:00Z on 2015-02-11Temperature 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 12:00Z on 2015-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -75 square meters per square second.1939587897117136Sfc1 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
843 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-75 m²/s²
0-3 km storm-relative helicity
49 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.

525 
WWUS72 KGSP 111957
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
257 PM EST WED FEB 11 2015

......AN ARCTIC COLD FRONT WILL ARRIVE EARLY THURSDAY...

.AN ARCTIC COLD FRONT WILL SWEEP ACROSS THE SOUTHERN APPALACHIANS
EARLY THURSDAY. THE FRONT WILL BRING STRONG WINDS...SNOW FLURRIES
AND FALLING TEMPERATURES.

NCZ049-053-058-059-062>065-501-503-505-507-509-120400-
/O.NEW.KGSP.WI.Y.0007.150212T1200Z-150213T0000Z/
YANCEY-BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-BURKE MOUNTAINS-
MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
INCLUDING THE CITIES OF...BURNSVILLE...ASHEVILLE...ROBBINSVILLE...
CULLOWHEE...SYLVA...FRANKLIN...HIGHLANDS...CASHIERS...BREVARD...
HENDERSONVILLE...FLETCHER...EAST FLAT ROCK...ETOWAH
257 PM EST WED FEB 11 2015

...WIND ADVISORY IN EFFECT FROM 7 AM TO 7 PM EST THURSDAY...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A WIND ADVISORY...WHICH IS IN EFFECT FROM 7 AM TO 7 PM EST
THURSDAY.

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS

* HAZARDS...STRONG WINDS MAY BLOW TREE LIMBS DOWN AND TOPPLE TREES

* TIMING...DURING THE DAY THURSDAY

* WINDS...NORTHWEST WINDS 20 TO 30 MPH WITH GUSTS TO 50 MPH.

* IMPACTS...SCATTERED POWER OUTAGES ARE POSSIBLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
LG
4 follow-up statements
414 
WWUS72 KGSP 120327
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1027 PM EST WED FEB 11 2015

...AN ARCTIC COLD FRONT WILL ARRIVE EARLY THURSDAY...

.AN ARCTIC COLD FRONT WILL SWEEP ACROSS THE SOUTHERN APPALACHIANS
EARLY THURSDAY. THE FRONT WILL BRING STRONG WINDS...SNOW FLURRIES
AND FALLING TEMPERATURES.

NCZ049-120430-
/O.CAN.KGSP.WI.Y.0007.150212T1200Z-150213T0000Z/
YANCEY-
1027 PM EST WED FEB 11 2015

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS
CANCELLED THE WIND ADVISORY.

ELEVATED WIND THREATS REMAIN IN THE FORECAST FOR YANCEY COUNTY.
HOWEVER...THE WIND THREATS WILL NOW BE INCLUDED IN THE WINTER
WEATHER ADVISORY PRODUCT.

$$

NCZ053-058-059-062>065-501-503-505-507-509-121200-
/O.CON.KGSP.WI.Y.0007.150212T1200Z-150213T0000Z/
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-BURKE MOUNTAINS-
MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
INCLUDING THE CITIES OF...ASHEVILLE...ROBBINSVILLE...CULLOWHEE...
SYLVA...FRANKLIN...HIGHLANDS...CASHIERS...BREVARD...
HENDERSONVILLE...FLETCHER...EAST FLAT ROCK...ETOWAH
1027 PM EST WED FEB 11 2015

...WIND ADVISORY REMAINS IN EFFECT FROM 7 AM TO 7 PM EST
THURSDAY...

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS

* HAZARDS...STRONG WINDS MAY BLOW TREE LIMBS DOWN AND TOPPLE 
  TREES

* TIMING...DURING THE DAY THURSDAY

* WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH.

* IMPACTS...SCATTERED POWER OUTAGES ARE POSSIBLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

CDG
334 
WWUS72 KGSP 120930
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
430 AM EST THU FEB 12 2015

...AN ARCTIC COLD FRONT WILL PUSH THROUGH THE REGION THIS MORNING...

.AN ARCTIC COLD FRONT WILL SWEEP ACROSS THE WESTERN CAROLINAS AND
NORTHEAST GEORGIA THROUGH THIS MORNING. THE FRONT WILL BRING
STRONG WINDS...SNOW FLURRIES AND FALLING TEMPERATURES.

NCZ033-048>052-121730-
/O.EXB.KGSP.WI.Y.0007.150213T0000Z-150213T0500Z/
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
INCLUDING THE CITIES OF...BANNER ELK...NEWLAND...ELK PARK...
CROSSNORE...SUGAR MOUNTAIN...MARS HILL...MARSHALL...HOT SPRINGS...
BURNSVILLE...SPRUCE PINE...BRYSON CITY...WAYNESVILLE...CANTON...
LAKE JUNALUSKA
430 AM EST THU FEB 12 2015

...WIND ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO MIDNIGHT EST
TONIGHT...

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED
A WIND ADVISORY...WHICH IS IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EST TONIGHT.

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS

* HAZARDS...STRONG WINDS MAY BLOW TREE LIMBS DOWN AND TOPPLE 
  TREES

* TIMING...DURING THE DAY THURSDAY

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 50 MPH.

* IMPACTS...SCATTERED POWER OUTAGES ARE POSSIBLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

NCZ053-058-059-062>065-501-503-505-507-509-121730-
/O.EXT.KGSP.WI.Y.0007.150212T1200Z-150213T0500Z/
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-BURKE MOUNTAINS-
MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
INCLUDING THE CITIES OF...ASHEVILLE...ROBBINSVILLE...CULLOWHEE...
SYLVA...FRANKLIN...HIGHLANDS...CASHIERS...BREVARD...
HENDERSONVILLE...FLETCHER...EAST FLAT ROCK...ETOWAH
430 AM EST THU FEB 12 2015

...WIND ADVISORY NOW IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS

* HAZARDS...STRONG WINDS MAY BLOW TREE LIMBS DOWN AND TOPPLE 
  TREES

* TIMING...DURING THE DAY THURSDAY

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...SCATTERED POWER OUTAGES ARE POSSIBLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
JOH
803 
WWUS72 KGSP 121721
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1221 PM EST THU FEB 12 2015

...VERY GUSTY NORTHWEST WINDS WILL CONTINUE ACROSS THE MOUNTAINS 
THROUGH THIS EVENING...

NCZ053-058-059-062>065-501-503-505-507-509-130000-
/O.CON.KGSP.WI.Y.0007.000000T0000Z-150213T0500Z/
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
TRANSYLVANIA-HENDERSON-CALDWELL MOUNTAINS-BURKE MOUNTAINS-
MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
INCLUDING THE CITIES OF...ASHEVILLE...ROBBINSVILLE...CULLOWHEE...
SYLVA...FRANKLIN...HIGHLANDS...CASHIERS...BREVARD...
HENDERSONVILLE...FLETCHER...EAST FLAT ROCK...ETOWAH
1221 PM EST THU FEB 12 2015

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS. 

* HAZARDS...STRONG WINDS MAY BLOW DOWN A FEW TREE LIMBS. 

* TIMING...THROUGH THIS EVENING.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...ADVERSE DRIVING CONDITIONS...AND ISOLATED POWER
  OUTAGES ARE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

NCZ033-048>052-130000-
/O.CON.KGSP.WI.Y.0007.150213T0000Z-150213T0500Z/
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
INCLUDING THE CITIES OF...BANNER ELK...NEWLAND...ELK PARK...
CROSSNORE...SUGAR MOUNTAIN...MARS HILL...MARSHALL...HOT SPRINGS...
BURNSVILLE...SPRUCE PINE...BRYSON CITY...WAYNESVILLE...CANTON...
LAKE JUNALUSKA
1221 PM EST THU FEB 12 2015

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
MIDNIGHT EST TONIGHT...

* LOCATIONS...THE TENNESSEE BORDER COUNTIES. 

* HAZARDS...STRONG WINDS MAY BLOW DOWN A FEW TREE LIMBS. 

* TIMING...THIS EVENING.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...ADVERSE DRIVING CONDITIONS...AND ISOLATED POWER
  OUTAGES ARE POSSIBLE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$
958 
WWUS72 KGSP 130002
NPWGSP

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
702 PM EST THU FEB 12 2015

...VERY GUSTY NORTHWEST WINDS WILL CONTINUE ACROSS THE MOUNTAINS
THROUGH THIS EVENING...

NCZ033-048>053-058-059-062>065-501-503-505-507-509-130500-
/O.CON.KGSP.WI.Y.0007.000000T0000Z-150213T0500Z/
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
INCLUDING THE CITIES OF...BANNER ELK...NEWLAND...ELK PARK...
CROSSNORE...SUGAR MOUNTAIN...MARS HILL...MARSHALL...HOT SPRINGS...
BURNSVILLE...SPRUCE PINE...BRYSON CITY...WAYNESVILLE...CANTON...
LAKE JUNALUSKA...ASHEVILLE...ROBBINSVILLE...CULLOWHEE...SYLVA...
FRANKLIN...HIGHLANDS...CASHIERS...BREVARD...HENDERSONVILLE...
FLETCHER...EAST FLAT ROCK...ETOWAH
702 PM EST THU FEB 12 2015

...WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

* LOCATIONS...THE WESTERN NORTH CAROLINA MOUNTAINS.

* HAZARDS...STRONG WINDS MAY BLOW DOWN A FEW TREE LIMBS.

* TIMING...THROUGH THIS EVENING.

* WINDS...NORTHWEST 15 TO 25 MPH WITH GUSTS UP TO 45 MPH.

* IMPACTS...ADVERSE DRIVING CONDITIONS...AND ISOLATED POWER 
  OUTAGES ARE POSSIBLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

CDG

What forecasters said that day

The local office's own words before this wind 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 wind advisory went out at Feb 11, 2:49 PM EST, 8 minutes earlier.

Area forecast discussion, Feb 11, 2:49 PM EST, 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
249 PM EST WED FEB 11 2015

.SYNOPSIS...
A COLD FRONT WILL MOVE ACROSS THE AREA EARLY THURSDAY MORNING WITH A
CANADIAN AIR MASS FILTERING INTO THE REGION IN ITS WAKE. A SECOND ARCTIC
COLD FRONT CROSSES THE AREA ON SATURDAY EVENING...BRINGING ANOTHER
VERY COLD AIRMASS OVER THE REGION FOR THE WEEKEND. A LOW PRESSURE
SYSTEM WILL APPROACH THE AREA ON TUESDAY.

&&

.NEAR TERM /THROUGH THURSDAY/...
AT 2PM WED...THE PLEASANT/TRANQUIL WEATHER OF TODAY WILL COME TO AN
END AS A VIGOROUS UPPER TROUGH SWINGS SE OUT OF CANADA AND THEN
ACROSS THE APPLACHIANS THU AFTERNOON. THE UPPER TROUGH WILL DRIVE AN
ARCTIC COLD FRONT QUICKLY SE WITH THE LEADING EDGE OF THE COLD
AIRMASS REACHING THE MOUNTAINS ABOUT 12Z AND THEN MOVING QUICKLY
ACROSS THE REMAINDER OF THE AREA BY 18Z. THE FRONT DOES NOT HAVE A
LOT OF MOISTURE TO WORK WITH SO PRECIP IS NOT EXPECTED OUTSIDE THE
MOUNTAINS. HOWEVER...INCREASING NW FLOW SHOULD GENERATE SNOW SHOWERS
ESPECIALLY IN THE TN BORDER COUNTIES. THE NAM SOUNDINGS CONTINUE TO
EXHIBIT SOME LOW LEVEL CAPE WHICH WILL AID IN SNOWFALL RATES. HENCE
1-2 INCHES OF SNOW ACCUMULATION LOOKS REASONABLE. THE OTHER HAZARD
WILL BE WIND. A STRONG PRESSURE GRADIENT AND CAA WILL SUPPORT WINDS
OF 20-30MPH WITH GUSTS TO 50 MPH IN THE MOUNTAINS. OUTSIDE THE
MOUNTAINS...WINDS WILL ALSO INCREASE TO 15-25 MPH WITH GUSTS UP TO
35 MPH. THE WINDS IN THE MOUNTAINS WILL REQUIRE A WIND ADVISORY.
WHERE ACCUMULATING SNOW IS EXPECTED WILL ISSUE A WINTER WX ADVISORY
ADVERTISING STRONG WINDS...SNOW AND BLOWING SNOW. TEMPS IN THE
MOUNTAINS WILL BE NON-DIURNAL WITH AN EARLY MORNING HIGH AND THEN
FALLING TEMPS THROUGHOUT THE DAY. WIND CHILL CONCERNS WILL DEVELOP
BY LATE IN THE DAY.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH SUNDAY/...
AS OF 215 PM EST WED...LINGERING NW FLOW MOISTURE WILL CONTINUE TO
WRING OUT SCATTERED SNOW SHOWERS IN THE NRN MOUNTAINS THU
EVENING...BEFORE TAPERING OFF OVERNIGHT. THE PRES GRADIENT WILL ALSO
REMAIN RELATIVELY TIGHT ACROSS THE HIGHER TERRAIN FOR A PORTION OF
THE NIGHTTIME HOURS...WITH ELEVATIONS ABOVE 3500 FEET LIKELY SEEING
WIND CHILL VALUES OF MINUS 5 TO MINUS 15...WITH MANY OF THE LOWER
VALLEYS TOUCHING MINUS 5 DURING THE EARLY MORNING HOURS FRIDAY. A
WIND CHILL ADVISORY WILL LIKELY BE NEEDED AT SOME POINT FOR MAINLY
THU NIGHT.

A HIGHLY AMPLIFIED ERN TROUGH WILL THEN SET UP IN THE FRI TO SUNDAY
PERIOD...WITH A DEEP VORTEX MOVING SWD OUT OF ONTARIO TO REINFORCE
ARCTIC AIR ACROSS THE SE SAT NIGHT INTO SUNDAY. AHEAD OF THIS
FEATURE...EXPECT LITTLE MORE THAN MID LEVEL MOISTURE CROSSING THE
REGION WITH A WEAK SHORTWAVE ON FRIDAY. A MODEST REBOUND IN
TEMPERATURES IS EXPECTED FRI NIGHT AND SAT...BUT WITH THE ARCTIC
FRONT CROSSING THE REGION FROM THE NW LATE SAT. A BRIEF SHOT OF
MOISTURE IS EXPECTED WITH THE COLD FRONT ON SATURDAY...BUT THE
STRENGTH OF THE COLD AIR WILL BE THE MAIN STORY. GEFS 850 MB
TEMPERATURE ANOMALIES WILL BE ABOUT 2 TO 3 STANDARD DEVIATIONS BELOW
NORMAL BY SUNDAY. THE PRES GRADIENT BETWEEN THE DEPARTING LOW AND
1044 ARCTIC HIGH OVER THE PLAINS WILL PUSH WIND CHILL VALUES TO NEAR
WARNING LEVELS IN THE NC MOUNTAINS SUN MORNING...WITH PROBABLY SOME
ADVISORY CRITERIA OUT EAST. LIGHT WRN MTN SNOW ACCUMS ARE LIKELY IN
THE NW FLOW AS WELL. MAXES WILL LIKELY NOT RISE ABOVE FREEZING
ACROSS WRN NC SUNDAY AFTN.

&&

.LONG TERM /SUNDAY NIGHT THROUGH WEDNESDAY/...
AS OF 230 PM WEDNESDAY...CONFIDENCE IS ON THE LOW END FOR THE MEDIUM
RANGE PART OF THE FCST...OWING TO SOME RUN-TO-RUN CONSISTENCY ISSUES
WITH THE MODEL GUIDANCE WITH THE NEXT SYSTEM TOWARD THE MIDDLE OF
NEXT WEEK. THE FIRST PART SEEMS QUIET ENOUGH WITH A FLAT UPPER RIDGE
MOVING IN AND ACROSS THE CAROLINAS SUNDAY NIGHT THROUGH MONDAY. THE
PROBLEMS BEGIN IN EARNEST LATE MONDAY AS MOISTURE RETURNS AHEAD OF A
DIGGING UPPER TROF OVER THE PLAINS...AND FORCING SPREADS OVER THE
REGION FROM THE SW IN THE FORM OF ISENTROPIC LIFT AND UPPER
DIVERGENCE IN THE RIGHT ENTRANCE REGION OF A STRENGTHENING UPPER JET
TO OUR N. THE CONSENSUS OF THE OPERATIONAL MODELS IS THAT PRECIP
WILL DEVELOP FROM THE SW ACROSS THE FCST AREA MONDAY NIGHT...MAINLY
OVER THE MTNS AND NE GEORGIA BEFORE SUNRISE...AND THEN THE REST OF
THE FCST AREA BY NOON TUESDAY. AS THESE DEVELOPMENTS HAPPEN...A
RELATIVELY COOL BUT RELATIVELY WEAK UPPER HIGH WILL BE MOVING OFF TO
THE EAST. THAT WILL PROVIDE THE OPPORTUNITY FOR AN IN-SITU WEDGE TO
DEVELOP WITH LOW LEVEL THICKNESS LOW ENOUGH TO RESULT IN THE THREAT
OF LIGHT FREEZING RAIN. THE MOST LIKELY SCENARIO FOR NOW...BASED ON
THE GUIDANCE...IS FOR A SHORT PERIOD OF SLEET/SNOW AND THEN A SHORT
PERIOD OF FREEZING RAIN AS THE PRECIP DEVELOPS. WILL STAY CONSISTENT
WITH THE GUIDANCE AND INCLUDE THE WINTRY MIX. HOWEVER...UNCERTAINTY
IN THE TIMING SMEARS THIS OUT IN THE FCST PROCESS...SO THE FCST
MIGHT LOOK MORE DIRE THAN IT ACTUALLY WILL BE. FREEZING RAIN EVENTS
BECOME MORE RARE AS WE GET INTO MID/LATE FEBRUARY...SO THE MOST
LIKELY TREND WILL BE FOR WARM ADVECTION TO WIN OUT AND LIMIT THE
AMOUNT OF ANY WINTRY MIX. THE TREND IN THE GFS IS TO MOVE THE
PRIMARY LOW W OF THE MTNS...WHICH SHOULD HAVE NO PROBLEM CHANGING
ALL PRECIP OVER TO RAIN ON TUESDAY. HAVE KEPT THE PRECIP PROBABILITY
LIMITED TO THE LIKELY CATEGORY. THINGS GET COMPLICATED AGAIN TUESDAY
NIGHT AS THE FRONT MOVES IN. LOW LEVEL THICKNESS DROPS BEHIND THE
FRONT OVER THE MTNS BEFORE THE MID LEVEL COOL AIR ARRIVES...WHICH
GIVES THE MTNS ANOTHER CHANCE FOR FREEZING RAIN. THE MID LEVEL COLD
AIR ARRIVES IN SHORT ORDER SO PRECIP SHOULD CHANGE TO SNOW FROM THE
WEST OVERNIGHT. MEANWHILE...IF THE GFS IS CORRECT...WE WILL HAVE THE
OPPORTUNITY TO DESTABILIZE OVER THE EASTERN FRINGE OF THE FCST AREA
EARLY WEDNESDAY MORNING AHEAD OF THE FRONT...WHILE WE HAVE SOME
STRONG SHEAR. THAT COULD SPELL SOME CONCERN FOR SEVERE WEATHER. THE
FRONT BLASTS THROUGH WEDNESDAY MORNING AND THE COLD AIR FOLLOWS
ACROSS THE REST OF THE FCST AREA. ONCE AGAIN...CONFIDENCE IS NOT
GREAT...SO DO NOT PUT TOO MUCH STOCK IN THE WINTER PRECIP POTENTIAL
JUST YET.

&&

.AVIATION /20Z WEDNESDAY THROUGH MONDAY/...
AT KCLT...NO RESTRICTIONS AND GENERALLY SKC EVEN THOUGH A COLD FRONT
WILL MOVE THROUGH THURSDAY MORNING. WILL BEGIN TO SEE SOME SCT
CLOUDS 030-040 BY LATE THURSDAY MORNING WITH WINDS GUSTING UPWARD TO
20KT OR SO FROM THE NW. UNTIL THEN JUST LIGHT SW WINDS AS LEE TROUGH
DEVLOPS THIS AFTERNOON.

ELSEWHERE...SIMILAR TO THE CLT WITH VFR CONDITIONS THRU THE TAF
PERIOD. THE EXCEPTION WILL BE AT KAVL WHERE MVFR CLOUDS WILL SPILL
DOWN THE FRENCH BROAD VALLEY IN THE WAKE OF THE SHARP COLD FRONT
EARLY THU. SOME SCT CLOUDS WILL THEN SPILL OUT OF THE MOUNTAINS BY
EARLY AFTERNOON WITH NW WINDS GUSTING ABOVE 20KT BY 18Z THU.

OUTLOOK.. DRY BUT COLD HIGH PRESSURE WILL BUILD OVER THE AREA THU
NIGHT AND MOVE EAST OF THE REGION ON SAT. HENCE...NO RESTRICTIONS.
ANOTHER ARCTIC COLD FRONT WILL CROSS THE AREA BY SAT NIGHT...WITH
WINDY CONDITIONS AND MUCH COLDER TEMPERATURES ARRIVING.

CONFIDENCE TABLE...

            13-19Z        19-01Z        01-07Z        07-12Z
KCLT       HIGH  95%     HIGH 100%     HIGH 100%     HIGH 100%
KGSP       HIGH 100%     HIGH 100%     HIGH 100%     HIGH 100%
KAVL       MED   74%     HIGH 100%     HIGH 100%     HIGH 100%
KHKY       MED   77%     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 AND ENSEMBLE FORECASTS
ARE AVAILABLE AT THE FOLLOWING LINK: (MUST BE LOWER CASE)

WWW.WEATHER.GOV/GSP/AVIATION_TABLES

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...WIND ADVISORY FROM 7 AM TO 7 PM EST THURSDAY FOR NCZ049-053-
     058-059-062>065-501-503-505-507-509.
     WINTER WEATHER ADVISORY FROM 7 AM TO 7 PM EST THURSDAY FOR
     NCZ033-048>052.
SC...NONE.

&&

SYNOPSIS...JPT
NEAR TERM...LG
SHORT TERM...HG
LONG TERM...PM
AVIATION...LG
Hazardous weather outlook, Feb 11, 4:50 AM EST, 10 hours 7 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
450 AM EST WED FEB 11 2015

NCZ033-048>053-058-059-062>065-501-503-505-507-509-121000-
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-
450 AM EST WED FEB 11 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

..THURSDAY...LIGHT SNOW POSSIBLE. SNOW SHOWERS WILL DEVELOP ACROSS
THE TENNESSEE BORDER COUNTIES. ACCUMULATIONS UP TO 2 INCHES ARE
POSSIBLE BY THE TIME THE SNOW ENDS.
..FRIDAY...COLD WAVE POSSIBLE. IN THE WAKE OF AN ARCTIC COLD
FRONT...AN EXCEPTIONALLY COLD AIRMASS WILL SETTLE OVER THE
REGION. THE COMBINATION OF VERY WINDY CONDITIONS AND VERY COLD
TEMPERATURES MAY RESULT IN MORNING WIND CHILL VALUES OF 5 DEGREES
BELOW ZERO OR COLDER. WINDS GUSTS OVER 45 MPH ARE ALSO POSSIBLE.
THE ARCTIC AIR WILL REMAIN IN PLACE THROUGH EARLY NEXT WEEK...
BRINGING A PROLONGED PERIOD OF BELOW NORMAL TEMPERATURES.
..SATURDAY...COLD WAVE POSSIBLE.
..SUNDAY...WIND CHILL POSSIBLE. ANOTHER...STRONGER ARCTIC COLD
FRONT WILL PUSH THROUGH THE REGION BRINGING EVEN COLDER
TEMPERATURES AND VERY WINDY CONDITIONS. THE COMBINATION OF VERY
WINDY CONDITIONS AND VERY COLD TEMPERATURES MAY RESULT IN
WIDESPREAD MORNING WIND CHILL VALUES AS LOW AS 10 BELOW ZERO...
AND AS LOW AS 25 BELOW ZERO ACROSS THE NORTHERN MOUNTAINS. WINDS
GUSTS OVER 45 MPH ARE ALSO POSSIBLE.
..MONDAY...COLD WAVE POSSIBLE.
..TUESDAY...WINTRY MIX POSSIBLE. A LOW PRESSURE SYSTEM WILL MOVE
INTO THE AREA. WITH COLD AIR IN PLACE ACROSS THE REGION...THE
PRECIPITATION MAY START AS A WINTRY MIX BEFORE CHANGING TO RAIN.

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ010-017-018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-
506-508-510-SCZ001>014-019-121000-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-
DAVIE-CATAWBA-ROWAN-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-
UNION-GREATER CALDWELL-GREATER BURKE-EASTERN MCDOWELL-
GREATER RUTHERFORD-EASTERN POLK-OCONEE MOUNTAINS-PICKENS MOUNTAINS-
GREENVILLE MOUNTAINS-GREATER OCONEE-GREATER PICKENS-
GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-ANDERSON-ABBEVILLE-
LAURENS-CHESTER-GREENWOOD-
450 AM EST WED FEB 11 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..FRIDAY...COLD WAVE POSSIBLE. IN THE WAKE OF AN ARCTIC COLD
FRONT...AN EXCEPTIONALLY COLD AIRMASS WILL SETTLE OVER THE
REGION. WITH GUSTY WINDS DEVELOPING...MORNING WIND CHILL VALUES
COULD FALL BELOW ZERO. THE ARCTIC AIR WILL REMAIN IN PLACE THROUGH
EARLY NEXT WEEK...BRINGING A PROLONGED PERIOD OF BELOW NORMAL
TEMPERATURES.
..SATURDAY...COLD WAVE POSSIBLE.
..SUNDAY...COLD WAVE POSSIBLE.
..MONDAY...COLD WAVE POSSIBLE.
..TUESDAY...WINTRY MIX POSSIBLE. A LOW PRESSURE SYSTEM WILL MOVE
INTO THE AREA. WITH COLD AIR IN PLACE ACROSS THE REGION...THE
PRECIPITATION MAY START AS A WINTRY MIX BEFORE CHANGING TO RAIN.

.SPOTTER INFORMATION STATEMENT...

NONE.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 11, 2:54 PM ESTWinter Weather AdvisoryGSPAvery, Haywood, Madison, Mitchell, Swain, Yancey33 hr

Nearby

Wind Advisories in North Carolina, 2015Every wind advisory in 2015

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.