Alert archive / South Carolina / Tornado Warnings in 2021

Tornado Warning 12, NWS Greenville-Spartanburg, SC

April 10, 2021Spartanburg County, South Carolina

NWS Greenville-Spartanburg, SC issued this tornado warning at Apr 10, 2021, 6:37 PM EDT for Spartanburg County, South Carolina. It was in force for 23 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 10, 2021, 6:37 PM EDT (22:37 UTC)
Expired: Apr 10, 2021, 7:00 PM EDT
In force: 23 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Spartanburg County, SC

The radar

The Greer radar (KGSP), 18 km from the middle of the area, began a volume at 22:35 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.

What was reported inside it

Time	Report	Where	Remark
Apr 10, 6:40 PM EDT	TORNADO	4 Ene Reidville, SC	NWS STORM SURVEY REPORTED AN EF-0 TORNADO IN THE REIDVILLE/MOORE AREA.
Apr 10, 6:41 PM EDT	TSTM WND DMG	4 Ene Reidville, SC	THREE HARDWOOD TREES DOWN NEAR RESIDENCE ON BROOKHAVEN DR. POSSIBLE TORNADO.
Apr 10, 6:45 PM EDT	TSTM WND DMG	4 Ene Reidville, SC	PUBLIC REPORTED UPROOTED TREES ON HWY 417 BETWEEN HWY 290 & REIDVILLE RD.
Apr 10, 7:00 PM EDT	TSTM WND DMG	3 Sw Boiling Springs Sc, SC	BROADCAST MEDIA REPORTED TREES SNAPPED ON THE INTERSECTION OF ASHEVILLE HWY AND PISGAH CHURCH RD
Apr 10, 7:05 PM EDT	TSTM WND DMG	3 E Boiling Springs Sc, SC	911 CALL CENTER REPORTED POWER LINES DOWN ON OLD FURNACE RD NEAR BRYANT RD.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.6 hours before the alert went out and 233 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 706 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 69 m²/s²
0-3 km storm-relative helicity: 34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

723 
WFUS52 KGSP 102237
TORGSP
SCC083-102300-
/O.NEW.KGSP.TO.W.0012.210410T2237Z-210410T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Greenville-Spartanburg SC
637 PM EDT Sat Apr 10 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Tornado Warning for...
  Central Spartanburg County in Upstate South Carolina...

* Until 700 PM EDT.
    
* At 636 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southwest of Spartanburg, or 4 miles west of
  Roebuck, moving northeast at 35 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Expect damage to mobile homes, roofs, and vehicles.

* This dangerous storm will be near...
  Wellford around 640 PM EDT.
  Spartanburg and USC Upstate around 650 PM EDT.
  Boiling Springs SC around 700 PM EDT.

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.

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.

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 3477 8205 3480 8215 3510 8204 3503 8185
TIME...MOT...LOC 2236Z 205DEG 31KT 3489 8204 

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

$$

8

1 follow-up statement

081 
WWUS52 KGSP 102246
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
646 PM EDT Sat Apr 10 2021

SCC083-102300-
/O.CON.KGSP.TO.W.0012.000000T0000Z-210410T2300Z/
Spartanburg SC-
646 PM EDT Sat Apr 10 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR CENTRAL
SPARTANBURG COUNTY...
    
At 646 PM EDT, a severe thunderstorm capable of producing a tornado
was located 5 miles west of Spartanburg, or near Wellford, moving
north at 30 mph.

HAZARD...TORNADO.

SOURCE...Radar indicated rotation.

IMPACT...Expect damage to mobile homes, roofs, and vehicles.

This dangerous storm will be near...
  Boiling Springs SC and USC Upstate around 700 PM EDT.

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.

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.

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 3486 8198 3488 8212 3510 8204 3503 8185
TIME...MOT...LOC 2246Z 194DEG 27KT 3495 8203 

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

$$

8

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 6:58 PM EDT	Tornado Warning	GSP	Spartanburg	32 min

Nearby

Tornado Warnings in South Carolina, 2021 Every tornado warning in 2021 Tornadoes in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.