Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 24, NWS Greenville-Spartanburg, SC

October 8, 2017Laurens County, Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Oct 8, 2017, 4:38 PM EDT for Laurens County, Union County, South Carolina. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 8, 2017, 4:38 PM EDT (20:38 UTC)
Expired
Oct 8, 2017, 5:15 PM EDT
In force
37 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Laurens County, SC, Union County, SC

The radar

The Greer radar (KGSP), 57 km from the middle of the area, began a volume at 20:41 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.6 hours before the alert went out and 245 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, Charleston AFB, SC at 12:00Z on 2017-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 591 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, Charleston AFB, SC at 12:00Z on 2017-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.1939Sfc1 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
591 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
656 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
53 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

Open this sounding in Storm Lab

The text

As transmitted.

930 
WFUS52 KGSP 082038
TORGSP
SCC059-087-082115-
/O.NEW.KGSP.TO.W.0024.171008T2038Z-171008T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
438 PM EDT SUN OCT 8 2017

The National Weather Service in Greenville-Spartanburg has issued a

* Tornado Warning for...
  Southeastern Laurens County in Upstate South Carolina...
  West central Union County in Upstate South Carolina...

* Until 515 PM EDT
    
* At 438 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 13 miles southeast of Laurens, or 5 miles northeast of
  Cross Hill, moving north at 30 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Joanna around 450 PM EDT. 
  Clinton around 500 PM EDT. 

Other locations impacted by this dangerous thunderstorm include Cross
Keys and Sedalia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A brief, weak tornado is likely. Mobile homes could be flipped.
Falling trees can cause death or serious injury, and major damage to
houses. Move to a basement or an interior room on the lowest floor of
a sturdy building.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

LAT...LON 3430 8194 3460 8189 3459 8189 3460 8188
      3458 8186 3467 8183 3464 8167 3434 8184
      3432 8186 3430 8190 3429 8190
TIME...MOT...LOC 2038Z 195DEG 26KT 3434 8189 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

08
1 follow-up statement
031 
WWUS52 KGSP 082053
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
453 PM EDT SUN OCT 8 2017

SCC059-087-082115-
/O.CON.KGSP.TO.W.0024.000000T0000Z-171008T2115Z/
Laurens SC-Union SC-
453 PM EDT SUN OCT 8 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR EAST
CENTRAL LAURENS AND WEST CENTRAL UNION COUNTIES...
    
At 453 PM EDT, a severe thunderstorm capable of producing a tornado
was located 10 miles east of Laurens, or near Clinton, moving north
at 30 mph.

HAZARD...Tornado. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will remain over mainly rural areas of east
central Laurens and west central Union Counties, including the
following locations: Cross Keys and Sedalia.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

LAT...LON 3439 8181 3441 8192 3460 8189 3459 8189
      3460 8188 3458 8186 3467 8183 3464 8167
TIME...MOT...LOC 2053Z 197DEG 27KT 3445 8185 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

08

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 12:55 PM EDTSpecial Weather StatementGSPGreenville65 min
Oct 8, 3:05 PM EDTSpecial Weather StatementGSPSpartanburg40 min
Oct 8, 3:17 PM EDTSpecial Weather StatementGSPPickens43 min
Oct 8, 3:39 PM EDTAreal Flood AdvisoryGSPOconee2 hr
Oct 8, 3:46 PM EDTSpecial Weather StatementGSPCherokee44 min
Oct 8, 4:01 PM EDTSpecial Weather StatementGSPLaurens44 min
Oct 8, 4:08 PM EDTTornado WarningGSPLaurens37 min
Oct 8, 4:15 PM EDTTornado WarningGSPGreenwood, Laurens30 min
Oct 8, 4:33 PM EDTTornado WarningGSPGreenville, Pickens42 min
Oct 8, 4:35 PM EDTTornado Warning Tornado observedGSPLaurens, Spartanburg40 min
Oct 8, 5:04 PM EDTTornado Warning Tornado observedGSPCherokee, Spartanburg, Union41 min
Oct 8, 5:14 PM EDTTornado Warning Tornado observedGSPSpartanburg, Union46 min
Oct 8, 6:00 PM EDTTornado WarningGSPCherokee, Union45 min
Oct 8, 6:12 PM EDTAreal Flood AdvisoryGSPGreenville, Spartanburg2 hr
Oct 8, 6:24 PM EDTTornado WarningGSPCherokee36 min
Oct 8, 6:42 PM EDTSpecial Weather StatementGSPCherokee, Union48 min
Oct 8, 6:53 PM EDTSpecial Weather StatementGSPUnion37 min

Nearby

Tornado Warnings in South Carolina, 2017Every tornado warning in 2017Tornadoes 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.