Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 6, NWS Greenville-Spartanburg, SC

March 26, 2021Oconee County, Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Mar 26, 2021, 1:55 AM EDT for Oconee County, Pickens County, South Carolina. It was in force for 35 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
Mar 26, 2021, 1:55 AM EDT (05:55 UTC)
Expired
Mar 26, 2021, 2:30 AM EDT
In force
35 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Tornado
Possible
Hail
0.75 in
Wind
60.0 mph

Counties Oconee County, SC, Pickens County, SC

The radar

The Greer radar (KGSP), 72 km from the middle of the area, began a volume at 05:57 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
Mar 26, 1:55 AM EDTTornado WatchSPC3 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 5.9 hours before the alert went out and 211 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 2021-03-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 344 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 2021-03-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 328 square meters per square second.1939587897Sfc1 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
344 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1291 m above ground
0-6 km bulk shear
76 kt
0-1 km storm-relative helicity
328 m²/s²
0-3 km storm-relative helicity
476 m²/s²
Significant tornado parameter
0.6
Supercell composite
6.8

Open this sounding in Storm Lab

The text

As transmitted.

547 
WUUS52 KGSP 260555
SVRGSP
SCC073-077-260630-
/O.NEW.KGSP.SV.W.0006.210326T0555Z-210326T0630Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
155 AM EDT Fri Mar 26 2021

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for...
  Western Pickens County in Upstate South Carolina...
  Central Oconee County in Upstate South Carolina...

* Until 230 AM EDT.

* At 155 AM EDT, a severe thunderstorm was located near Walhalla,
  moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Seneca, Walhalla, Pickens, Central, Liberty, Westminster, Norris,
  Six Mile, Salem and Lake Keowee.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storm is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

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.

&&

A Tornado Watch remains in effect until 700 AM EDT for Upstate South
Carolina.

LAT...LON 3493 8311 3507 8277 3479 8259 3463 8300
      3463 8323 3472 8325
TIME...MOT...LOC 0555Z 249DEG 44KT 3481 8303 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MOORE
1 follow-up statement
745 
WWUS52 KGSP 260610
SVSGSP

Severe Weather Statement
National Weather Service Greenville-Spartanburg SC
210 AM EDT Fri Mar 26 2021

SCC073-077-260630-
/O.CON.KGSP.SV.W.0006.000000T0000Z-210326T0630Z/
Pickens SC-Oconee SC-
210 AM EDT Fri Mar 26 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 AM EDT
FOR WESTERN PICKENS AND EAST CENTRAL OCONEE COUNTIES...

At 210 AM EDT, a severe thunderstorm was located 8 miles southwest of
Pickens, or near Six Mile, moving east at 45 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Seneca, Walhalla, Pickens, Central, Liberty, Norris, Six Mile, Salem,
Lake Keowee and Jocassee Gorges.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 700 AM EDT for Upstate South
Carolina.

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

Conditions are favorable for the development of brief, weak
tornadoes. Seek shelter inside an interior room.

This storms is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

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 3496 8292 3504 8275 3479 8259 3463 8300
      3470 8306 3478 8308
TIME...MOT...LOC 0610Z 256DEG 41KT 3481 8284 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

MOORE

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 25, 11:06 PM EDTSpecial Weather StatementGSPSpartanburg24 min
Mar 25, 11:42 PM EDTSpecial Weather StatementGSPCherokee48 min
Mar 25, 11:49 PM EDTAreal Flood AdvisoryGSPGreenville, Oconee, Pickens12 hr
Mar 25, 11:52 PM EDTSpecial Weather StatementGSPSpartanburg38 min
Mar 26, 12:20 AM EDTSpecial Weather StatementGSPChester, Union, York40 min
Mar 26, 1:29 AM EDTSevere Thunderstorm WarningGSPOconee31 min
Mar 26, 2:28 AM EDTSpecial Weather StatementGSPGreenville32 min
Mar 26, 2:50 AM EDTAreal Flood AdvisoryGSPSpartanburg14 hr
Mar 26, 3:15 AM EDTSpecial Weather StatementGSPAnderson30 min
Mar 26, 3:21 AM EDTRiver Flood WarningGSPCherokee, York30 hr
Mar 26, 3:23 AM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson24 min
Mar 26, 3:49 AM EDTSpecial Weather StatementGSPLaurens26 min
Mar 26, 4:01 AM EDTSpecial Weather StatementGSPAbbeville29 min
Mar 26, 4:14 AM EDTSpecial Weather StatementGSPLaurens, Union31 min
Mar 26, 4:25 AM EDTSpecial Weather StatementGSPChester35 min
Mar 26, 4:29 AM EDTSpecial Weather StatementGSPAbbeville, Greenwood31 min
Mar 26, 4:44 AM EDTSevere Thunderstorm WarningGSPChester31 min
Mar 26, 4:55 AM EDTSpecial Weather StatementGSPLaurens35 min
Mar 26, 5:20 AM EDTSpecial Weather StatementGSPChester40 min
Mar 26, 6:17 AM EDTRiver Flood AdvisoryGSPGreenville, Pickens7 hr
Mar 26, 6:58 AM EDTSpecial Weather StatementGSPGreenwood17 min
Mar 26, 6:59 AM EDTSpecial Weather StatementGSPLaurens31 min
Mar 26, 9:20 AM EDTSpecial Weather StatementGSPAbbeville25 min
Mar 26, 9:41 AM EDTSevere Thunderstorm WarningGSPAbbeville, Greenwood, Laurens49 min
Mar 26, 11:28 AM EDTAreal Flood AdvisoryGSPPickens14 hr
Mar 26, 1:32 PM EDTRiver Flood WarningGSPGreenville, Pickens31 hr
Mar 26, 4:37 PM EDTAreal Flood AdvisoryGSPSpartanburg10 hr

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.