Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Columbia, SC

March 21, 2017Fairfield County, Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Mar 21, 2017, 9:36 PM EDT for Fairfield County, Lexington County, Richland County, South Carolina. It was in force for 39 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: Mar 21, 2017, 9:36 PM EDT (01:36 UTC)
Expired: Mar 21, 2017, 10:15 PM EDT
In force: 39 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Fairfield County, SC, Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 36 km from the middle of the area, began a volume at 01:36 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 21, 9:50 PM EDT	TSTM WND DMG	7 Wnw Lexington, SC	SC HIGHWAY PATROL REPORTED TREES DOWN AT ROCKY COVE ROAD AT ROCKY COVE COURT .
Mar 21, 9:55 PM EDT	TSTM WND DMG	3 N Lexington, SC	SC HIGHWAY PATROL REPORTED TREES DOWN ON CORLEY MILL ROAD AT SC HIGHWAY 6 .
Mar 21, 10:00 PM EDT	TSTM WND DMG	5 Wnw Lexington, SC	SC HIGHWAY PATROL REPORTED TREES DOWN AT THE INTERSECTION OF BEECHCREEK ROAD AND WISE FERRY ROAD. MULTIPLE TREES DOWN THROUGHOUT LEXINGTON COUNTY.
Mar 21, 10:05 PM EDT	TSTM WND DMG	2 Ssw Seven Oaks, SC	SC HIGHWAY PATROL REPORTED TREE DOWN ON CORLEY MILL ROAD AT RIVER BLUFF HIGH SCHOOL.
Mar 21, 10:10 PM EDT	TSTM WND GST 60	4 N Lexington, SC	RICHLAND COUNTY MESONET SITE AT THE LAKE MURRAY DAM REPORTED A WIND GUST TO 60 MPH. .

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 21, 8:35 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 1.6 hours before the alert went out and 186 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: 130 J/kg
Mixed-layer CIN: -258 J/kg
Mixed-layer LCL: 2122 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

237 
WUUS52 KCAE 220136
SVRCAE
SCC039-063-079-220215-
/O.NEW.KCAE.SV.W.0013.170322T0136Z-170322T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
936 PM EDT TUE MAR 21 2017

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Fairfield County in central South Carolina...
  Northwestern Lexington County in central South Carolina...
  Northwestern Richland County in central South Carolina...

* Until 1015 PM EDT

* At 936 PM EDT, severe thunderstorms were located along a line
  extending from near Blackstock to 11 miles southwest of Winnsboro
  to 8 miles north of Batesburg, moving east at 50 mph.

  HAZARD...70 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect considerable tree damage. Damage is likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Lexington, Irmo, Winnsboro, St. Andrews, Blackstock, Blythewood,
  Chapin, Ridgeway, Winnsboro Mills, Seven Oaks and Lake Murray Of
  Richland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

If on or near Lake Murray, get away from the water and move indoors 
or inside a vehicle. Remember, lightning can strike out to 15 miles 
from the parent thunderstorm. If you can hear thunder, you are close 
enough to be struck by lightning. Move to safe shelter now!  Do not 
be caught on the water in a thunderstorm.

&&

LAT...LON 3454 8088 3448 8089 3441 8083 3441 8079
      3436 8078 3421 8085 3398 8120 3397 8152
      3409 8146 3407 8139 3412 8143 3417 8141
      3420 8134 3422 8134 3424 8130 3457 8127
TIME...MOT...LOC 0136Z 258DEG 42KT 3458 8119 3426 8122 3402 8160 

HAIL...<.75IN
WIND...70MPH
 
$$

fwa

1 follow-up statement

355 
WWUS52 KCAE 220158
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
958 PM EDT TUE MAR 21 2017

SCC039-063-079-220215-
/O.CON.KCAE.SV.W.0013.000000T0000Z-170322T0215Z/
Fairfield SC-Lexington SC-Richland SC-
958 PM EDT TUE MAR 21 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR FAIRFIELD...NORTH CENTRAL LEXINGTON AND NORTHWESTERN RICHLAND
COUNTIES...

At 956 PM EDT, severe thunderstorms were located along a line
extending from near Great Falls to 7 miles southeast of Winnsboro to
near Lexington, moving east at 45 mph.

HAZARD...70 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings. 

Locations impacted include...
Lexington, Irmo, Winnsboro, St. Andrews, Blythewood, Chapin,
Ridgeway, Winnsboro Mills, Seven Oaks and Lake Murray Of Richland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm has produced several reports of trees blown down in 
Saluda county with this line of thunderstorms.

Prepare immediately for damaging winds. People outside should move 
to a shelter, inside a strong building and away from windows.


&&

LAT...LON 3454 8088 3448 8089 3441 8083 3441 8079
      3436 8078 3421 8085 3398 8120 3398 8141
      3407 8139 3408 8139 3415 8138 3420 8134
      3424 8130 3456 8113
TIME...MOT...LOC 0156Z 257DEG 38KT 3454 8100 3430 8100 3400 8131 

HAIL...<.75IN
WIND...70MPH
 
$$

fwa

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 21, 8:14 PM EDT	Special Weather Statement	CAE	McCormick	31 min
Mar 21, 8:58 PM EDT	Special Weather Statement	CAE	Edgefield, Fairfield, McCormick, Newberry, Saluda	47 min
Mar 21, 9:01 PM EDT	Severe Thunderstorm Warning	CAE	Fairfield, Newberry, Saluda	44 min
Mar 21, 9:30 PM EDT	Special Weather Statement	CAE	Aiken	45 min
Mar 21, 10:04 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lexington, Richland	41 min
Mar 21, 10:05 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	40 min
Mar 21, 10:08 PM EDT	Severe Thunderstorm Warning	CAE	Edgefield, McCormick	37 min
Mar 21, 10:31 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Calhoun, Edgefield, Lexington, Orangeburg	59 min
Mar 21, 10:34 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Clarendon, Richland, Sumter	41 min
Mar 21, 10:45 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Edgefield, McCormick	45 min
Mar 21, 10:51 PM EDT	Severe Thunderstorm Warning	CAE	Chesterfield, Kershaw, Lee, Sumter	39 min
Mar 21, 10:58 PM EDT	Severe Thunderstorm Warning	CAE	Clarendon, Lee, Orangeburg, Sumter	47 min
Mar 21, 11:15 PM EDT	Severe Thunderstorm Warning	CAE	Barnwell	45 min
Mar 21, 11:22 PM EDT	Special Weather Statement	CAE	Bamberg, Calhoun, Orangeburg	23 min
Mar 21, 11:28 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Lexington, Orangeburg	32 min
Mar 22, 12:11 AM EDT	Special Weather Statement	CAE	Bamberg, Clarendon, Orangeburg	49 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2017 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.