Alert archive / North Carolina / Wind Advisories in 2011
Wind Advisory 12, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this wind advisory at Nov 23, 2011, 2:52 PM EST for 10 counties in North Carolina. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Nov 23, 2011, 2:52 PM EST (19:52 UTC)
- Expired
- Nov 23, 2011, 9:35 PM EST
- In force
- 7 hr
- Issued by
- NWS Greenville-Spartanburg, SC
Counties Avery County, NC, Buncombe County, NC, Burke County, NC, Caldwell County, NC, Henderson County, NC, McDowell County, NC, Mitchell County, NC, Polk County, NC, Rutherford County, NC, Yancey County, NC
The radar
The Greer radar (KGSP), 92 km from the middle of the area, began a volume at 19:50 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, 7.9 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 288 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 694 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
156 WWUS72 KGSP 231952 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 252 PM EST WED NOV 23 2011 ...DIMINISHING WINDS OVER THE MOUNTAINS AND FOOTHILLS THIS EVENING... .AS HIGH PRESSURE BUILDS IN BEHIND A DEPARTING COLD FRONT... NORTHWEST WINDS WILL DIMINISH THROUGH THE EVENING. BEFORE THAT TIME...THE POTENTIAL EXISTS FOR STRONG WIND GUSTS TO AFFECT PARTS OF THE UPPER FRENCH BROAD VALLEY...THE NORTHERN MOUNTAINS...AND THE EAST SLOPES OF THE BLUE RIDGE THROUGH LATE THIS EVENING. AWAY FROM THIS AREA WINDS WILL BE GUSTY BUT WEAKER. NCZ033-049-050-053-065-501-503-505-507-509-240400- /O.CAN.KGSP.HW.W.0002.000000T0000Z-111124T0500Z/ /O.NEW.KGSP.WI.Y.0012.111123T1952Z-111124T0500Z/ AVERY-YANCEY-MITCHELL-BUNCOMBE-HENDERSON-CALDWELL MOUNTAINS- BURKE MOUNTAINS-MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS- POLK MOUNTAINS- INCLUDING THE CITIES OF...NEWLAND...SPRUCE PINE...ASHEVILLE... HENDERSONVILLE 252 PM EST WED NOV 23 2011 ...WIND ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT... ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL MIDNIGHT EST TONIGHT. THE HIGH WIND WARNING HAS BEEN CANCELLED. * LOCATIONS...THE UPPER FRENCH BROAD VALLEY...THE NORTHERN MOUNTAINS...AND THE EASTERN SLOPES OF THE BLUE RIDGE. * HAZARDS...STRONG WINDS. * TIMING...NORTHWEST WINDS WILL CONTINUE THROUGH LATE EVENING. * WINDS...NORTHWEST 20 TO 30 MPH WITH GUSTS UP TO 50 MPH. * IMPACTS...ISOLATED DOWNED TREES AND POWER LINES. DANGEROUS DRIVING CONDITIONS FOR HIGH PROFILE VEHICLES. 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. && $$ GAZ010-017-NCZ048-051-052-058-059-062>064-502-504-506-508-510- SCZ001>003-240400- /O.CON.KGSP.LW.Y.0031.000000T0000Z-111124T0500Z/ RABUN-HABERSHAM-MADISON-SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON- MACON-SOUTHERN JACKSON-TRANSYLVANIA-GREATER CALDWELL- GREATER BURKE-EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK- OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS- INCLUDING THE CITIES OF...CLAYTON...CLARKESVILLE...BRYSON CITY... WAYNESVILLE...SYLVA...FRANKLIN...BREVARD 252 PM EST WED NOV 23 2011 ...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EST TONIGHT... * LOCATIONS...THE CENTRAL AND SOUTHERN NORTH CAROLINA MOUNTAINS... THE LOWER ELEVATIONS OF NORTH CAROLINA FOOTHILLS...AND THE MOUNTAINS OF UPSTATE SOUTH CAROLINA AND EXTREME NORTHEAST GEORGIA. * HAZARDS...WINDY CONDITIONS. * TIMING...WINDS CONTINUING INTO THE EVENING HOURS. * WINDS...NORTH 15 TO 25 MPH WITH GUSTS UP TO 40 MPH. * IMPACTS...HAZARDOUS CONDITIONS FOR BOATERS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A LAKE WIND ADVISORY INDICATES THAT WINDS WILL CAUSE ROUGH CHOP ON AREA LAKES. SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING. && $$
1 follow-up statement
817 WWUS72 KGSP 240235 NPWGSP URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 935 PM EST WED NOV 23 2011 NCZ033-049-050-053-065-501-503-505-507-509-240345- /O.CAN.KGSP.WI.Y.0012.000000T0000Z-111124T0500Z/ AVERY-YANCEY-MITCHELL-BUNCOMBE-HENDERSON-CALDWELL MOUNTAINS- BURKE MOUNTAINS-MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS- POLK MOUNTAINS- INCLUDING THE CITIES OF...NEWLAND...SPRUCE PINE...ASHEVILLE... HENDERSONVILLE 935 PM EST WED NOV 23 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS CANCELLED THE WIND ADVISORY. BREEZY NORTHWEST WINDS LATE THIS EVENING WILL STEADILY DIMINISH OVERNIGHT ACROSS THE NORTH CAROLINA MOUNTAINS. $$ GAZ010-017-NCZ048-051-052-058-059-062>064-502-504-506-508-510- SCZ001>003-240345- /O.CAN.KGSP.LW.Y.0031.000000T0000Z-111124T0500Z/ RABUN-HABERSHAM-MADISON-SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON- MACON-SOUTHERN JACKSON-TRANSYLVANIA-GREATER CALDWELL- GREATER BURKE-EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK- OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS- INCLUDING THE CITIES OF...CLAYTON...CLARKESVILLE...BRYSON CITY... WAYNESVILLE...SYLVA...FRANKLIN...BREVARD 935 PM EST WED NOV 23 2011 ...LAKE WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS CANCELLED THE LAKE WIND ADVISORY. NORTHWEST WINDS HAVE DIMINISHED LATE THIS EVENING AND SHOULD BECOME LIGHT OVERNIGHT. $$ HG
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 Nov 23, 2:44 PM EST, 8 minutes earlier.
Area forecast discussion, Nov 23, 2:44 PM EST, 8 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
244 PM EST WED NOV 23 2011
.SYNOPSIS...
HIGH PRESSURE WILL BUILD ACROSS THE SOUTHEAST REGION TONIGHT AND
REMAIN THROUGH SATURDAY. ANOTHER COLD FRONT IS EXPECTED TO APPROACH
THE AREA SATURDAY NIGHT AND SUNDAY...AND MOVE OVER THE ATLANTIC COAST BY
MONDAY.
&&
.NEAR TERM /THROUGH THURSDAY/...
RIDGING SFC AND ALOFT MOVES INTO THE AREA TONIGHT AS UPPER TROF AND
COLD FRONT MOVE INTO THE ATLANTIC. THIS WILL BRING CLEARING SKIES
AND DIMINISHING WINDS TO THE MTNS OVERNIGHT. THAT SAID...GUSTY WINDS
WILL CONTINUE ACROSS THE AREA INTO THE EVENING. STILL...WINDS ACROSS
THE MTNS HAVE NOT REACHED HIGH WIND WARNING LEVELS. THEREFORE...WILL
DROP THE WARNING AND PUT AN ADV IN PLACE AND LEAVE LAKE WIND ADV AS
IS. WINDS SHOULD DROP OFF SIGNIFICANTLY AFTER MIDNIGHT AS PRESSURE
GRADIENT RELAXES AS THE CENTER OF HIGH PRESSURE APPROACHES. WITH THE
COOLER AIR MASS MOVING IN...LOWS WILL FALL TO AROUND NORMAL.
HEIGHTS RISE THURSDAY AS RIDGE MOVES OVERHEAD. LIGHT NLY FLOW
BECOMES SLY BY AFTERNOON AS THE CENTER OF SFC HIGH PRESSURE MOVES
INTO THE AREA. EXPECT DRY CONDITIONS AND ABOVE NORMAL HIGHS AS
THICKNESSES RISE. IN FACT...HIGHS WILL LIKELY BE WARMER THAN
WEDNESDAY ACROSS THE MTNS AND NC FOOTHILLS.
&&
.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
AS OF 130 PM WEDNESDAY...THE POST-THANKSGIVING PERIOD SHOULD BE
RELATIVELY TRANQUIL. THE UPPER RIDGE WILL BUILD IN THURSDAY NIGHT
AND THE RIDGE AXIS WILL CROSS THE REGION ON FRIDAY. THIS SHOULD
DRIVE A SURFACE HIGH ACROSS THE CAROLINAS DURING THE FIRST PART OF
THE PERIOD. THE RIDGE AXIS WILL SHIFT OFF THE SOUTHEAST COAST FRIDAY
NIGHT AND SATURDAY...TAKING THE SURFACE HIGH OFFSHORE WITH IT.
MOISTURE WILL BEGIN TO RETURN FROM THE SOUTH ON SATURDAY AFTERNOON.
THINK ANY LIGHT PRECIP DEVELOPMENT OVER THE SRN MTNS AND NE GEORGIA
SATURDAY AFTERNOON SHOWN BY THE MODELS IS PREMATURE...SO THE SLIGHT
CHANCE POP WAS IGNORED. TEMPS WERE NUDGED TOWARD A GUIDANCE BLEND.
&&
.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
AS OF 230 PM WEDNESDAY...MEDIUM RANGE MODEL DIFFERENCES MAKE FOR
DIFFICULT DECISIONS IN DETAILS OF FORECAST FOR SUNDAY THROUGH
WEDNESDAY. HAVE BASICALLY FOLLOWED HPC GUIDANCE. GFS AND ECMWF BOTH
SHOW SIGNIFICANT 500 MB TROUGH AFFECTING THE AREA. GFS BEGINS
SUNDAY WITH A DEEP CUTOFF OVER THE WESTERN GREAT LAKES WITH TROUGH
SOUTHWEST TO SOUTHERN PLAINS. ECMWF DEPICTS A SHARP OPEN WAVE FROM
WESTERN GREAT LAKES TO SOUTHERN PLAINS. EASTERN PROGRESSION OF
EITHER SYSTEM INCREASES QG FORCING ACROSS THE FORECAST AREA AS
NARROW BUT RATHER DEEP MOISTURE STREAMS NORTHWARD IN SOUTHERLY LOW
LEVEL FLOW. THUS POPS WILL BE INCREASED ON SUNDAY. ECMWF DROPS
CUTOFF INTO SOUTHEASTERN STATES ON MONDAY WHILE NORTHERN STREAM
PORTION OF 500 MB TROUGH SHEARS OFF TO THE EAST. GFS MAINTAINS DEEP
TROUGH ALL THE WAY FROM EASTERN GREAT LAKES TO GEORGIA. EITHER
WAY... THE CWA IS IN SOUTH AND SOUTHWEST FLOW WITH HEIGHTS AND
THICKNESSES LOWERING OVER THE AREA. ECMWF WRAPS SIGNIFICANT MOISTURE
BACK INTO THE CWA FROM THE SOUTHEAST WHILE GFS SIGNALS MOSTLY A
NORTHWEST FLOW SNOW EVENT DURING MONDAY INTO TUESDAY AS ITS CUTOFF
DRIFTS EAST. WITH SO MUCH UNCERTAINTY IN MOISTURE DISTRIBUTION AND
POSITION OF PRIMARY SYNOPTIC FEATURES... CHANCE POPS WILL BE
CONTINUED INTO TUESDAY TAPERING OFF BY WEDNESDAY WHEN BOTH MODELS
SHOW DRIER NORTHWEST FLOW FOLLOWING EVENTUAL EASTWARD PROGRESSION OF
TROUGH. LOWER THICKNESSES OVER MOUNTAINS WILL PRODUCE MIXED RAIN AND
SNOW OR MOSTLY SNOW AT HIGHER ELEVATIONS FROM LATE SUNDAY INTO
MONDAY. HIGHS IN THE 50S AND 60S ON SUNDAY WILL LOWER TO THE 40S AND
50S TUESDAY AND WEDNESDAY. LOWS IN THE 40S AND LOWER 50S ON SUNDAY
WILL COOL TO THE 30S DURING THE FIRST OF THE WEEK.
&&
.AVIATION /20Z WEDNESDAY THROUGH MONDAY/...
AT KCLT AND ELSEWHERE...GUSTY NW WINDS WILL CONTINUE THRU THE
AFTERNOON THEN DIMINISH BY EVENING WITH LINGERING GUSTS AT KAVL INTO
THE EVENING. FEW TO SCT LOW VFR OUTSIDE OF THE MTNS DISSIPATE WITH
SUNSET. LINGERING MVFR CIGS OVER THE MTNS WILL DISSIPATE THRU THE
EVENING...WITH KAVL BECOMING LOW VFR DURING THE AFTERNOON THEN
SCATTERING OUT. OTHERWISE...VFR CONDITIONS OVERNIGHT WITH LIGHT NLY
WIND. WIND BECOMES LIGHT AND VARIABLE BY MID MORNING THU WITH CLEAR
SKIES.
OUTLOOK...EXPECT WINDS TO TAKE ON A SLY COMPONENT THU AFTERNOON AS
CENTER OF HIGH PRESSURE MOVES EAST. OTHERWISE...MUCH DRIER AIR WILL
CONTINUE TO PUSH INTO THE REGION WITH NO CIG OR VSBY RESTRICTIONS
EXPECTED FOR THE REST OF THE WEEK. RETURNING LOW LEVEL MOISTURE WILL
RESULT IN INCREASING PROBABILITY OF LOW CIGS/FOG BY THE END OF THE
WEEKEND.
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
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...LAKE WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR GAZ010-017.
NC...LAKE WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR NCZ048-051-
052-058-059-062>064-502-504-506-508-510.
WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR NCZ033-049-050-
053-065-501-503-505-507-509.
SC...LAKE WIND ADVISORY UNTIL MIDNIGHT EST TONIGHT FOR SCZ001>003.
&&
SYNOPSIS...TJB
NEAR TERM...RWH
SHORT TERM...PM
LONG TERM...LGL
AVIATION...RWHHazardous weather outlook, Nov 23, 3:35 AM EST, 11 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 335 AM EST WED NOV 23 2011 GAZ010-017-018-026-028-029-NCZ035>037-051-056>059-062-063-068>072- 082-SCZ001-002-004>014-019-240845- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL- DAVIE-SWAIN-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-MACON- SOUTHERN JACKSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS- UNION NC-OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK- ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 335 AM EST WED NOV 23 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND 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. NCZ048-052-064-502-504-506-508-510-SCZ003-240845- MADISON-HAYWOOD-TRANSYLVANIA-GREATER CALDWELL-GREATER BURKE- EASTERN MCDOWELL-GREATER RUTHERFORD-EASTERN POLK- GREENVILLE MOUNTAINS- 335 AM EST WED NOV 23 2011 ...LAKE WIND ADVISORY IN EFFECT UNTIL MIDNIGHT EST TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. LAKE WIND ADVISORY. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. NCZ033-049-050-053-065-501-503-505-507-509-240845- AVERY-YANCEY-MITCHELL-BUNCOMBE-HENDERSON-CALDWELL MOUNTAINS- BURKE MOUNTAINS-MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS- POLK MOUNTAINS- 335 AM EST WED NOV 23 2011 ...HIGH WIND WARNING IN EFFECT UNTIL MIDNIGHT EST TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS. HIGH WIND WARNING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE.
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 10:25 PM EST | Special Weather Statement | GSP | Burke | 35 min |
| Nov 22, 10:31 PM EST | Special Weather Statement | GSP | Rutherford | 29 min |
| Nov 22, 10:54 PM EST | Tornado Warning | GSP | Catawba, Cleveland, Lincoln, Rutherford | 23 min |
| Nov 23, 3:33 AM EST | High Wind Warning | GSP | Avery, Buncombe, Burke, Caldwell, Henderson, McDowell and 4 more | 11 hr |
| Nov 23, 3:33 AM EST | Lake Wind Advisory | GSP | Burke, Caldwell, Graham, Haywood, Jackson, McDowell and 6 more | 18 hr |
Nearby
Wind Advisories in North Carolina, 2011Every wind advisory in 2011
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.