Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 279, NWS Greenville-Spartanburg, SC

October 23, 20174 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Oct 23, 2017, 2:53 PM EDT for 4 counties in South Carolina. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 23, 2017, 2:53 PM EDT (18:53 UTC)
Expired
Oct 23, 2017, 3:24 PM EDT
In force
31 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Cherokee County, SC, Laurens County, SC, Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 39 km from the middle of the area, began a volume at 18:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 23, 2:00 PM EDTTornado WatchSPC8 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.9 hours before the alert went out and 225 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 2017-10-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2017-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 202 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
597 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
202 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Oct 23, 1:39 PM EDT, 1 hour 14 minutes earlier.

Area forecast discussion, Oct 23, 1:39 PM EDT, 1 hour 14 minutes before
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Hazardous weather outlook, Oct 23, 2:12 PM EDT, 41 minutes before
Hazardous Weather Outlook
National Weather Service Greenville-Spartanburg SC
212 PM EDT Mon Oct 23 2017

NCZ035>037-056-057-068>072-082-SCZ002-003-005>014-019-241815-
Alexander-Iredell-Davie-Catawba-Rowan-Cleveland-Lincoln-Gaston-
Mecklenburg-Cabarrus-Union-Pickens Mountains-Greenville Mountains-
Greater Pickens-Greater Greenville-Spartanburg-Cherokee-York-
Anderson-Abbeville-Laurens-Chester-Greenwood-
212 PM EDT Mon Oct 23 2017

...TORNADO WATCH 508 IN EFFECT UNTIL 9 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for piedmont North Carolina and
upstate South Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...Frost/freeze possible.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of large hail,
damaging winds, tornadoes, or flash flooding to our office.

GAZ017-018-026-028-029-SCZ001-004-241815-
Habersham-Stephens-Franklin-Hart-Elbert-Oconee Mountains-
Greater Oconee-
212 PM EDT Mon Oct 23 2017

This Hazardous Weather Outlook is for northeast Georgia and upstate
South Carolina.

.DAY ONE...This Afternoon and Tonight.

Strong thunderstorms with gusty winds and heavy rainfall will move
east of the area this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

..Tuesday...No hazardous weather is expected at this time.
..Wednesday...No hazardous weather is expected at this time.
..Thursday...Frost/freeze possible.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of large hail,
damaging winds, tornadoes, or flash flooding to our office.

GAZ010-NCZ048>053-058-059-062>065-241815-
Rabun-Madison-Yancey-Mitchell-Swain-Haywood-Buncombe-Graham-
Northern Jackson-Macon-Southern Jackson-Transylvania-Henderson-
212 PM EDT Mon Oct 23 2017

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

.DAY ONE...This Afternoon and Tonight.

Strong thunderstorms with gusty winds and heavy rainfall will move
east of the area by late afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

..Tuesday...No hazardous weather is expected at this time.
..Wednesday...Frost/freeze possible.
..Thursday...Frost/freeze possible.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of large hail,
damaging winds, tornadoes, or flash flooding to our office.

NCZ033-501>510-241815-
Avery-Caldwell Mountains-Greater Caldwell-Burke Mountains-
Greater Burke-McDowell Mountains-Eastern McDowell-
Rutherford Mountains-Greater Rutherford-Polk Mountains-Eastern Polk-
212 PM EDT Mon Oct 23 2017

...TORNADO WATCH 508 IN EFFECT UNTIL 9 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for western North Carolina.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

..Tuesday...No hazardous weather is expected at this time.
..Wednesday...Frost/freeze possible.
..Thursday...Frost/freeze possible.
..Friday...No hazardous weather is expected at this time.
..Saturday...No hazardous weather is expected at this time.
..Sunday...No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Skywarn spotters are requested to forward any reports of large hail,
damaging winds, tornadoes, or flash flooding to our office.

In the hours before

Special weather statement, Oct 23, 1:38 PM EDT, 1 hour 15 minutes before
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Special weather statement, Oct 23, 1:53 PM EDT, 1 hour before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
153 PM EDT MON OCT 23 2017

NCZ033-049-050-053-505-507-231830-
Buncombe NC-McDowell Mountains NC-Yancey NC-Rutherford Mountains NC-
Avery NC-Mitchell NC-
153 PM EDT MON OCT 23 2017

...A STRONG THUNDERSTORM WILL IMPACT WESTERN MCDOWELL...SOUTHERN
MITCHELL...SOUTHWESTERN AVERY...NORTHEASTERN BUNCOMBE AND EASTERN
YANCEY COUNTIES UNTIL 230 PM EDT...

At 153 PM EDT, Doppler radar was tracking a strong thunderstorm 13
miles southwest of Marion, or near Old Fort, moving north at 45 mph.

Locations to be impacted include...
Spruce Pine, Burnsville, Old Fort, Bakersville, B.R. Parkway-Little
Switzerland To Linville, Mount Mitchell State Park, B.R.
Parkway-Craggy To Little Switzerland, Black Mountain, Montreat and
Bandana.

Wind gusts up to 45 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

LAT...LON 3551 8211 3553 8233 3603 8233 3601 8199
TIME...MOT...LOC 1753Z 185DEG 40KT 3560 8222

KRENTZ
Special weather statement, Oct 23, 2:02 PM EDT, 51 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
202 PM EDT MON OCT 23 2017

NCZ053-064-065-SCZ002-003-005-231830-
Buncombe NC-Transylvania NC-Henderson NC-Pickens Mountains SC-
Greater Pickens SC-Greenville Mountains SC-
202 PM EDT MON OCT 23 2017

...STRONG THUNDERSTORMS WILL IMPACT EASTERN TRANSYLVANIA...
HENDERSON...SOUTH CENTRAL BUNCOMBE...NORTHWESTERN GREENVILLE AND
NORTHEASTERN PICKENS COUNTIES UNTIL 230 PM EDT...

At 201 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 10 miles north of Brevard to 5 miles southwest of
Pickens, and moving northeast at 35 mph.

Locations to be impacted include...
Downtown Asheville, Hendersonville, Brevard, Pickens, East Asheville,
Arden, West Asheville, Mills River, Fletcher and Flat Rock.

Wind gusts up to 45 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

A tornado watch remains in effect until 900 PM EDT for Upstate South
Carolina.

LAT...LON 3568 8249 3509 8240 3478 8280 3546 8274
TIME...MOT...LOC 1801Z 236DEG 32KT 3538 8274 3482 8277

KRENTZ
Special weather statement, Oct 23, 2:07 PM EDT, 46 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
207 PM EDT MON OCT 23 2017

SCZ006-010>012-019-231830-
Laurens SC-Anderson SC-Abbeville SC-Greenwood SC-
Greater Greenville SC-
207 PM EDT MON OCT 23 2017

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN LAURENS...
SOUTHEASTERN GREENVILLE...SOUTHEASTERN ANDERSON...NORTHEASTERN
ABBEVILLE AND NORTHWESTERN GREENWOOD COUNTIES UNTIL 230 PM EDT...

At 206 PM EDT, Doppler radar was tracking a strong thunderstorm 12
miles northwest of Abbeville, or 4 miles west of Due West, moving
northeast at 35 mph.

Locations to be impacted include...
Honea Path, Ware Shoals, Due West, Donalds, Cokesbury, Hodges, Shoals
Junction, Lake Secession, Antreville and Fork Shoals.

Wind gusts up to 50 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

A tornado watch remains in effect until 900 PM EDT for Upstate South
Carolina.

LAT...LON 3416 8253 3436 8260 3471 8226 3433 8206
TIME...MOT...LOC 1806Z 236DEG 32KT 3434 8247

KRENTZ
Special weather statement, Oct 23, 2:25 PM EDT, 28 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
225 PM EDT MON OCT 23 2017

NCZ033-049-050-501-503>508-510-SCZ006>008-231900-
Caldwell Mountains NC-Greater Burke NC-Rutherford Mountains NC-
Eastern McDowell NC-Avery NC-Eastern Polk NC-Greater Rutherford NC-
McDowell Mountains NC-Yancey NC-Burke Mountains NC-Mitchell NC-
Cherokee SC-Spartanburg SC-Greater Greenville SC-
225 PM EDT MON OCT 23 2017

...A CLUSTER OF THUNDERSTORMS WILL IMPACT MCDOWELL...RUTHERFORD...
POLK...EASTERN MITCHELL...NORTHWESTERN CALDWELL...AVERY...EAST
CENTRAL YANCEY...WESTERN BURKE...EAST CENTRAL GREENVILLE...NORTHERN
SPARTANBURG AND NORTHWESTERN CHEROKEE COUNTIES UNTIL 300 PM EDT...

At 225 PM EDT, Doppler radar indicated the leading edge of a cluster
of thunderstorms along a line extending from 6 miles west of Newland
to 13 miles east of Greenville Downtown, and moving northeast at 50
mph.

Locations to be impacted include...
Spartanburg, Morganton, Forest City, Marion, Rutherfordton, Spruce
Pine, Columbus, Newland, Greer and Simpsonville.

Wind gusts up to 50 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

A tornado watch remains in effect until 900 PM EDT for western and
the Piedmont of North Carolina...and Upstate South Carolina.

LAT...LON 3621 8191 3616 8183 3611 8181 3612 8166
      3592 8168 3589 8173 3586 8168 3531 8172
      3519 8177 3518 8173 3508 8174 3468 8227
      3506 8224 3507 8222 3552 8220 3553 8217
      3554 8220 3611 8215 3612 8203 3628 8190
TIME...MOT...LOC 1825Z 227DEG 42KT 3608 8204 3478 8216

KRENTZ
Special weather statement, Oct 23, 2:41 PM EDT, 12 minutes before
Special Weather Statement
National Weather Service Greenville-Spartanburg SC
241 PM EDT MON OCT 23 2017

SCZ006>008-012-013-231930-
Cherokee SC-Laurens SC-Union SC-Spartanburg SC-Greater Greenville SC-
241 PM EDT MON OCT 23 2017

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN LAURENS...EAST CENTRAL
GREENVILLE...SOUTHERN SPARTANBURG...SOUTHWESTERN CHEROKEE AND UNION
COUNTIES UNTIL 330 PM EDT...

At 241 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles northwest of Laurens, or over Gray Court, moving northeast at
55 mph.

Locations to be impacted include...
Laurens, Union, Spartanburg, Fountain Inn, Woodruff, Pacolet,
Cowpens, Monarch Mill, Roebuck and Buffalo.

Wind gusts up to 50 mph and very heavy rainfall rates up to 2 inches
per hour will be possible in these areas.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Gusty winds can blow down trees that are dead, or that have weakened
root systems. Outdoor furniture and similar items can be tossed
around if not anchored. Seek shelter indoors.

The combination of gusty winds and saturated soil conditions will
cause scattered trees and power lines to fall. Seek shelter inside an
interior room.

&&

A tornado watch remains in effect until 900 PM EDT for Upstate South
Carolina.

LAT...LON 3445 8202 3469 8227 3508 8174 3469 8146
TIME...MOT...LOC 1841Z 236DEG 49KT 3461 8212

KRENTZ

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 23, 3:01 AM EDTWind AdvisoryGSPGraham, Haywood, Jackson, Macon, Swain, Transylvania11 hr
Oct 23, 11:44 AM EDTAreal Flood AdvisoryGSPTransylvania6 hr
Oct 23, 11:58 AM EDTAreal Flood AdvisoryGSPJackson, Macon9 hr
Oct 23, 12:08 PM EDTAreal Flood AdvisoryGSPHenderson, Transylvania6 hr
Oct 23, 12:16 PM EDTSpecial Weather StatementGSPMacon59 min
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, 1:09 PM EDTSpecial Weather StatementGSPJackson51 min
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
Oct 23, 11:43 AM EDTSpecial Weather StatementGSPGreenville47 min
Oct 23, 1:38 PM EDTSpecial Weather StatementGSPAnderson52 min
Oct 23, 2:07 PM EDTSpecial Weather StatementGSPAbbeville23 min
Oct 23, 2:16 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Laurens44 min
Oct 23, 2:23 PM EDTAreal Flood AdvisoryGSPPickens5 hr
Oct 23, 2:41 PM EDTSpecial Weather StatementGSPLaurens, Union49 min
Oct 23, 2:54 PM EDTTornado WarningGSPCherokee, Spartanburg36 min
Oct 23, 2:55 PM EDTAreal Flood AdvisoryGSPAnderson, Greenville, Pickens4 hr
Oct 23, 3:27 PM EDTAreal Flood AdvisoryGSPSpartanburg6 hr
Oct 23, 3:30 PM EDTSpecial Weather StatementGSPCherokee30 min
Oct 23, 1:10 PM EDTSpecial Weather StatementGSPElbert50 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2017Every severe thunderstorm warning 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.