Alert archive / South Carolina / Tornado Warnings in 2017

Tornado Warning 21, NWS Greenville-Spartanburg, SC

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

NWS Greenville-Spartanburg, SC issued this tornado warning at Oct 8, 2017, 4:15 PM EDT for Greenwood County, Laurens County, South Carolina. It was in force for 30 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, 4:15 PM EDT (20:15 UTC)
Expired: Oct 8, 2017, 4:45 PM EDT
In force: 30 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

Counties Greenwood County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 20:14 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, 8.3 hours before the alert went out and 231 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

838 
WFUS52 KGSP 082015
TORGSP
SCC047-059-082045-
/O.NEW.KGSP.TO.W.0021.171008T2015Z-171008T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
415 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...
  East central Greenwood County in Upstate South Carolina...

* Until 445 PM EDT
    
* At 414 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 11 miles east of Greenwood, or near Greenwood State
  Park, 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...
  Cross Hill around 430 PM EDT. 

Other locations impacted by this dangerous thunderstorm include
Kinards, Mountville and Dyson.

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 3414 8201 3446 8200 3440 8176 3436 8179
      3435 8183 3432 8186 3430 8190 3424 8191
      3421 8194 3420 8194 3419 8192 3418 8192
      3418 8191 3416 8191 3414 8189 3411 8191
TIME...MOT...LOC 2014Z 195DEG 24KT 3418 8194 

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

$$

08

1 follow-up statement

122 
WWUS52 KGSP 082028
SVSGSP

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

SCC047-082038-
/O.CAN.KGSP.TO.W.0021.000000T0000Z-171008T2045Z/
Greenwood SC-
428 PM EDT SUN OCT 8 2017

...THE TORNADO WARNING FOR EAST CENTRAL GREENWOOD COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the county. Therefore, the warning has been cancelled there.

LAT...LON 3423 8192 3425 8199 3444 8193 3440 8176
      3436 8179 3435 8183 3432 8186 3430 8190
      3424 8191
TIME...MOT...LOC 2028Z 195DEG 24KT 3427 8191 

$$

SCC059-082045-
/O.CON.KGSP.TO.W.0021.000000T0000Z-171008T2045Z/
Laurens SC-
428 PM EDT SUN OCT 8 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM EDT FOR
SOUTHEASTERN LAURENS COUNTY...
    
At 428 PM EDT, a severe thunderstorm capable of producing a tornado
was located 14 miles east of Greenwood, or 4 miles southeast 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...
  Cross Hill around 430 PM EDT. 
  Joanna around 440 PM EDT. 

Other locations impacted by this dangerous storm include Kinards.

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 3423 8192 3425 8199 3444 8193 3440 8176
      3436 8179 3435 8183 3432 8186 3430 8190
      3424 8191
TIME...MOT...LOC 2028Z 195DEG 24KT 3427 8191 

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

$$

08

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 8, 12:55 PM EDT	Special Weather Statement	GSP	Greenville	65 min
Oct 8, 3:05 PM EDT	Special Weather Statement	GSP	Spartanburg	40 min
Oct 8, 3:17 PM EDT	Special Weather Statement	GSP	Pickens	43 min
Oct 8, 3:39 PM EDT	Areal Flood Advisory	GSP	Oconee	2 hr
Oct 8, 3:46 PM EDT	Special Weather Statement	GSP	Cherokee	44 min
Oct 8, 4:01 PM EDT	Special Weather Statement	GSP	Laurens	44 min
Oct 8, 4:08 PM EDT	Tornado Warning	GSP	Laurens	37 min
Oct 8, 4:33 PM EDT	Tornado Warning	GSP	Greenville, Pickens	42 min
Oct 8, 4:35 PM EDT	Tornado Warning Tornado observed	GSP	Laurens, Spartanburg	40 min
Oct 8, 4:38 PM EDT	Tornado Warning	GSP	Laurens, Union	37 min
Oct 8, 5:04 PM EDT	Tornado Warning Tornado observed	GSP	Cherokee, Spartanburg, Union	41 min
Oct 8, 5:14 PM EDT	Tornado Warning Tornado observed	GSP	Spartanburg, Union	46 min
Oct 8, 6:00 PM EDT	Tornado Warning	GSP	Cherokee, Union	45 min
Oct 8, 6:12 PM EDT	Areal Flood Advisory	GSP	Greenville, Spartanburg	2 hr
Oct 8, 6:24 PM EDT	Tornado Warning	GSP	Cherokee	36 min
Oct 8, 6:42 PM EDT	Special Weather Statement	GSP	Cherokee, Union	48 min
Oct 8, 6:53 PM EDT	Special Weather Statement	GSP	Union	37 min

Nearby

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