Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 1, NWS Columbia, SC

March 18, 2021Newberry County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Mar 18, 2021, 3:34 PM EDT for Newberry County, South Carolina. It was in force for 41 min. 1 report 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: Mar 18, 2021, 3:34 PM EDT (19:34 UTC)
Expired: Mar 18, 2021, 4:15 PM EDT
In force: 41 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Newberry County, SC

The radar

The Greer radar (KGSP), 74 km from the middle of the area, began a volume at 19:36 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
Mar 18, 3:40 PM EDT	TSTM WND DMG	2 Nw Chappells, SC	CHAPPELLS FIRE DEPARTMENT REPORTED NUMEROUS TREES DOWN ALONG HWY 39 AND 56 NORTH OF CHAPPELLS.

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

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 18, 2:08 PM EDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.6 hours before the alert went out and 229 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: 219 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 679 m above ground
0-6 km bulk shear: 65 kt
0-1 km storm-relative helicity: 170 m²/s²
0-3 km storm-relative helicity: 244 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

As transmitted.

049 
WUUS52 KCAE 181934
SVRCAE
SCC071-182015-
/O.NEW.KCAE.SV.W.0001.210318T1934Z-210318T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
334 PM EDT Thu Mar 18 2021

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Northwestern Newberry County in central South Carolina...

* Until 415 PM EDT.

* At 334 PM EDT, a severe thunderstorm was located near Lake
  Greenwood State Park, or 14 miles east of Greenwood, moving
  northeast at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Newberry, Newberry College, Newberry County Airport, Silverstreet,
  Chappells, Chappells Fire Station, Newberry County Detention
  Center, US-176 and SC-
  34 Crossroads, Bush River Fire Station, Vaughnville, Belfast
  Wildlife Management Area and Enoree Ranger District Office.

This includes Interstate 26 between mile markers 62 and 75.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for central South
Carolina.

Remain alert for a possible tornado! Conditions are favorable for
tornadoes to form, sometimes with little or no advance warning. Move
to an interior room or closet on the lowest floor of a sturdy
building.

&&

LAT...LON 3453 8164 3433 8149 3417 8185 3418 8186
      3415 8190 3418 8190 3420 8194 3430 8190
      3432 8185 3435 8183 3435 8181 3436 8179
      3444 8173 3446 8169
TIME...MOT...LOC 1934Z 232DEG 26KT 3421 8189 

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

fwa

2 follow-up statements

839 
WWUS52 KCAE 181951
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
351 PM EDT Thu Mar 18 2021

SCC071-182015-
/O.CON.KCAE.SV.W.0001.000000T0000Z-210318T2015Z/
Newberry SC-
351 PM EDT Thu Mar 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR CENTRAL NEWBERRY COUNTY...

At 350 PM EDT, a severe thunderstorm was located 8 miles west of
Newberry County Airport, or 9 miles west of Newberry, moving
northeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Newberry, Newberry College, Newberry County Airport, Newberry County
Detention Center, US-176 and SC-
34 Crossroads, Bush River Fire Station and Enoree Ranger District
Office.

This includes Interstate 26 between mile markers 62 and 75.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Tornado Watch remains in effect until 600 PM EDT for central South
Carolina.

Remain alert for a possible tornado! Conditions are favorable for
tornadoes to form, sometimes with little or no advance warning. Move
to an interior room or closet on the lowest floor of a sturdy
building.

&&

LAT...LON 3453 8164 3433 8149 3421 8177 3432 8185
      3435 8183 3435 8181 3436 8179 3444 8173
      3446 8169
TIME...MOT...LOC 1950Z 232DEG 26KT 3428 8178 

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

fwa

704 
WWUS52 KCAE 182013
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
413 PM EDT Thu Mar 18 2021

SCC071-182022-
/O.EXP.KCAE.SV.W.0001.000000T0000Z-210318T2015Z/
Newberry SC-
413 PM EDT Thu Mar 18 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL NEWBERRY COUNTY WILL
EXPIRE AT 415 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

A Tornado Watch remains in effect until 600 PM EDT for central South
Carolina.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Columbia.

LAT...LON 3453 8164 3433 8149 3421 8177 3432 8185
      3435 8183 3435 8181 3436 8179 3444 8173
      3446 8169
TIME...MOT...LOC 2012Z 232DEG 26KT 3438 8163 

$$

fwa

The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 18, 2:34 PM EDT	Special Weather Statement	CAE	McCormick	26 min
Mar 18, 3:19 PM EDT	Special Weather Statement	CAE	Newberry	26 min
Mar 18, 4:24 PM EDT	Special Weather Statement	CAE	Fairfield	51 min
Mar 18, 5:01 PM EDT	Special Weather Statement	CAE	Lancaster	29 min
Mar 18, 5:24 PM EDT	Severe Thunderstorm Warning	CAE	Lancaster	36 min
Mar 18, 5:48 PM EDT	Special Weather Statement	CAE	Fairfield	42 min
Mar 18, 5:51 PM EDT	Special Weather Statement	CAE	Chesterfield	24 min
Mar 18, 7:48 PM EDT	Special Weather Statement	CAE	Chesterfield	42 min
Mar 18, 7:58 PM EDT	Special Weather Statement	CAE	Lancaster	32 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.