Alert archive / North Carolina / Wind Advisories in 2017

Wind Advisory 13, NWS Greenville-Spartanburg, SC

October 23, 2017Rabun County, Georgia; 6 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this wind advisory at Oct 23, 2017, 3:01 AM EDT for Rabun County, Georgia; 6 counties in North Carolina. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued
Oct 23, 2017, 3:01 AM EDT (07:01 UTC)
Expired
Oct 23, 2017, 2:00 PM EDT
In force
11 hr
Issued by
NWS Greenville-Spartanburg, SC

Counties Rabun County, GA, Graham County, NC, Haywood County, NC, Jackson County, NC, Macon County, NC, Swain County, NC, Transylvania County, NC

The radar

The Knoxville radar (KMRX), 100 km from the middle of the area, began a volume at 07:04 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 7.0 hours before the alert went out and 239 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, Peachtre/Fal Fld, GA at 00:00Z on 2017-10-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 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, Peachtre/Fal Fld, GA at 00:00Z on 2017-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 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
13 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
887 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
131 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

527 
WWUS72 KGSP 230701
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
301 AM EDT Mon Oct 23 2017

...VERY GUSTY WINDS EXPECTED TODAY OVER THE EXTREME SOUTHERN 
APPALACHIANS...

.A vigorous low pressure system will lift northeast across the
Appalachians today and bring very windy conditions to the high
terrain, mainly this morning and early this afternoon. Although
the ridge tops will see the highest gusts, heavy rain showers
could channel the gusty winds down into the lower mountain
valleys as well.

GAZ010-NCZ051-052-058-059-062>064-231800-
/O.NEW.KGSP.WI.Y.0013.171023T0701Z-171023T1800Z/
Rabun-Swain-Haywood-Graham-Northern Jackson-Macon-
Southern Jackson-Transylvania-
Including the cities of Clayton, Pine Mountain, Mountain City, 
Alarka, Almond, Bryson City, Luada, Wesser, Waynesville, 
Waterville, Canton, Cruso, Cove Creek, Robbinsville, Stecoah, 
Cullowhee, Tuckasegee, Sylva, Franklin, Rainbow Springs, Kyle, 
Highlands, Wolf Mountain, Cashiers, Brevard, Cedar Mountain, 
and Little River
301 AM EDT Mon Oct 23 2017

...WIND ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...

The National Weather Service in Greenville-Spartanburg has issued
a Wind Advisory, which is in effect until 2 PM EDT this
afternoon.

* LOCATIONS...The southwest mountains of western North Carolina,
  and Rabun County in northeast Georgia, especially along the
  higher elevations.

* HAZARDS...Very windy conditions. 

* TIMING...The strongest wind gusts will occur this morning
  through early this afternoon. 

* WINDS...Southeast 15 to 25 mph with gusts of 40 to 50 mph at
  times. The strongest gusts will likely occur along the higher
  ridges, but heavy rain showers could bring strong wind gusts 
  down into the lower mountain valleys as well.

* IMPACTS...The very gusty winds may blow down limbs and weak
  trees. Scattered power outages are possible. Unsecured objects
  may be blown about by the wind.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph or greater are 
expected. Winds this strong can make driving difficult, 
especially for high profile vehicles. Use extra caution.

Stay tuned to NOAA Weather Radio or your favorite source of
weather information for the latest updates. Additional details
can be found at www.weather.gov/gsp.

&&

$$

Gerapetritis
1 follow-up statement
160 
WWUS72 KGSP 231440
NPWGSP

URGENT - WEATHER MESSAGE
National Weather Service Greenville-Spartanburg SC
1040 AM EDT Mon Oct 23 2017

...VERY GUSTY WINDS EXPECTED TODAY OVER THE EXTREME SOUTHERN
APPALACHIANS...

.A vigorous low pressure system will lift northeast across the
Appalachians today and bring very windy conditions to the high
terrain, mainly through early afternoon. Although the ridge tops 
will see the highest gusts, heavy rain showers could channel the 
gusty winds down into the lower mountain valleys as well.

GAZ010-NCZ051-052-058-059-062>064-231800-
/O.CON.KGSP.WI.Y.0013.000000T0000Z-171023T1800Z/
Rabun-Swain-Haywood-Graham-Northern Jackson-Macon-
Southern Jackson-Transylvania-
Including the cities of Clayton, Pine Mountain, Mountain City, 
Alarka, Almond, Bryson City, Luada, Wesser, Waynesville, 
Waterville, Canton, Cruso, Cove Creek, Robbinsville, Stecoah, 
Cullowhee, Tuckasegee, Sylva, Franklin, Rainbow Springs, Kyle, 
Highlands, Wolf Mountain, Cashiers, Brevard, Cedar Mountain, 
and Little River
1040 AM EDT Mon Oct 23 2017

...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM EDT THIS
AFTERNOON...

* LOCATIONS...The southwest mountains of western North Carolina, 
  and Rabun County in northeast Georgia, especially along the 
  higher elevations.

* HAZARDS...Very windy conditions.

* TIMING...The strongest wind gusts will occur this morning 
  through early this afternoon.

* WINDS...South 15 to 25 mph with gusts of 40 to 50 mph at times.
  The strongest gusts will likely occur along the higher ridges, 
  but heavy rain showers could bring strong wind gusts down into 
  the lower mountain valleys as well.

* IMPACTS...Strong winds may blow down limbs, trees, and power 
  lines. Scattered power outages are expected. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Wind Advisory means that winds of 35 mph or greater are
expected. Winds this strong can make driving difficult,
especially for high profile vehicles. Use extra caution.

Stay tuned to NOAA Weather Radio or your favorite source of
weather information for the latest updates. Additional details
can be found at www.weather.gov/gsp.

&&

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 11:58 AM EDTAreal Flood AdvisoryGSPRabun9 hr
Oct 23, 12:16 PM EDTSpecial Weather StatementGSPFranklin, Habersham, Rabun, Stephens59 min
Oct 23, 1:09 PM EDTSpecial Weather StatementGSPHart51 min
Oct 23, 1:10 PM EDTSpecial Weather StatementGSPElbert50 min
Oct 23, 11:44 AM EDTAreal Flood AdvisoryGSPTransylvania6 hr
Oct 23, 12:08 PM EDTAreal Flood AdvisoryGSPHenderson, Transylvania6 hr
Oct 23, 12:21 PM EDTAreal Flood AdvisoryGSPHaywood6 hr
Oct 23, 12:27 PM EDTSpecial Weather StatementGSPHenderson, Polk33 min
Oct 23, 12:43 PM EDTAreal Flood AdvisoryGSPBuncombe, Henderson6 hr
Oct 23, 12:46 PM EDTSpecial Weather StatementGSPAvery29 min
Oct 23, 1:00 PM EDTSpecial Weather StatementGSPHenderson, Polk45 min
Oct 23, 1:04 PM EDTAreal Flood WarningGSPTransylvania6 hr
Oct 23, 1:47 PM EDTAreal Flood AdvisoryGSPBuncombe, Henderson, Transylvania6 hr
Oct 23, 1:53 PM EDTSpecial Weather StatementGSPMitchell, Yancey37 min
Oct 23, 2:02 PM EDTAreal Flood WarningGSPHenderson6 hr
Oct 23, 2:02 PM EDTSpecial Weather StatementGSPBuncombe, Henderson28 min
Oct 23, 2:07 PM EDTRiver Flood WarningGSPHenderson, Transylvania66 hr
Oct 23, 2:25 PM EDTSpecial Weather StatementGSPAvery, Burke, McDowell, Polk, Rutherford35 min
Oct 23, 2:26 PM EDTAreal Flood WarningGSPBuncombe, Henderson, McDowell, Rutherford, Yancey6 hr
Oct 23, 2:44 PM EDTAreal Flood WarningGSPBuncombe, Haywood, Henderson, Madison, Transylvania6 hr
Oct 23, 3:04 PM EDTAreal Flood AdvisoryGSPAvery, Burke, McDowell, Mitchell, Polk, Rutherford6 hr
Oct 23, 3:09 PM EDTAreal Flood AdvisoryGSPAvery, Mitchell, Yancey6 hr
Oct 23, 3:32 PM EDTFlash Flood WarningGSPAvery, Mitchell6 hr
Oct 23, 3:32 PM EDTTornado WarningGSPCleveland28 min
Oct 23, 3:41 PM EDTFlash Flood WarningGSPYancey6 hr
Oct 23, 3:45 PM EDTFlash Flood WarningGSPBurke, McDowell6 hr
Oct 23, 3:48 PM EDTRiver Flood WarningGSPBuncombe, Henderson30 hr
Oct 23, 3:57 PM EDTRiver Flood WarningGSPBuncombe16 hr
Oct 23, 3:59 PM EDTTornado WarningGSPBurke, Catawba, Cleveland, Lincoln, Rutherford31 min
Oct 23, 4:16 PM EDTRiver Flood AdvisoryGSPHaywood12 hr
Oct 23, 4:25 PM EDTTornado Warning Tornado observedGSPAlexander, Burke, Caldwell, Catawba35 min
Oct 23, 4:30 PM EDTFlash Flood WarningGSPBurke, Caldwell6 hr
Oct 23, 4:30 PM EDTSpecial Weather StatementGSPDavie, Gaston, Lincoln, Mecklenburg60 min
Oct 23, 4:41 PM EDTRiver Flood AdvisoryGSPBuncombe12 hr
Oct 23, 4:50 PM EDTTornado Warning Tornado observedGSPAlexander, Caldwell14 min
Oct 23, 4:58 PM EDTAreal Flood AdvisoryGSPGaston, Lincoln, Mecklenburg6 hr
Oct 23, 5:14 PM EDTSevere Thunderstorm WarningGSPDavie, Iredell, Rowan46 min
Oct 23, 5:18 PM EDTAreal Flood AdvisoryGSPBurke, Caldwell6 hr
Oct 23, 5:18 PM EDTSevere Thunderstorm WarningGSPIredell11 min
Oct 23, 5:26 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg, Rowan, Union49 min
Oct 23, 5:36 PM EDTSevere Thunderstorm WarningGSPDavie24 min
Oct 23, 5:44 PM EDTAreal Flood AdvisoryGSPCabarrus, Iredell, Mecklenburg, Rowan6 hr
Oct 23, 5:48 PM EDTSevere Thunderstorm WarningGSPCabarrus, Iredell, Rowan42 min
Oct 23, 6:18 PM EDTSpecial Weather StatementGSPUnion42 min
Oct 23, 7:03 PM EDTAreal Flood WarningGSPBuncombe, Haywood, Henderson, Madison, Rutherford, Transylvania6 hr
Oct 23, 7:20 PM EDTAreal Flood AdvisoryGSPPolk, Rutherford3 hr
Oct 23, 7:33 PM EDTAreal Flood WarningGSPAvery, Burke, Caldwell, McDowell, Mitchell, Yancey6 hr

Nearby

Wind Advisories in North Carolina, 2017Wind Advisories in Georgia, 2017Every wind advisory in 2017

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.