Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 46, NWS Columbia, SC

April 5, 2017Calhoun County, Lexington County, Richland County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 5, 2017, 2:17 PM EDT for Calhoun County, Lexington County, Richland County, South Carolina. It was in force for 58 min. 9 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 5, 2017, 2:17 PM EDT (18:17 UTC)
Expired
Apr 5, 2017, 3:15 PM EDT
In force
58 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Tornado
Possible
Hail
1.25 in
Wind
60.0 mph

Counties Calhoun County, SC, Lexington County, SC, Richland County, SC

The radar

The Columbia radar (KCAE), 30 km from the middle of the area, began a volume at 18:15 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

TimeReportWhereRemark
Apr 5, 2:18 PM EDTHAIL 1.752 Se Lexington, SC
Apr 5, 2:20 PM EDTHAIL 1.751 Wsw Springdale, SCPUBLIC REPORTED GOLF BALL SIZE HAIL AT THE ENTERPRISE CAR LOT NEAR THE COLUMBIA METROPOLITAN AIRPORT.
Apr 5, 2:21 PM EDTTSTM WND DMG3 Ene Lexington, SCTREE DOWN BLOCKING ROADWAY DOGWOOD TRAIL AT WOODSIDE ROAD.
Apr 5, 2:22 PM EDTTSTM WND DMG1 Wsw Springdale, SCREPORTED A COUPLE SMALL TREES DOWN NEAR THE PLATT SPRINGS ROAD ENTRANCE TO THE COLUMBIA METRO AIRPORT.
Apr 5, 2:23 PM EDTTSTM WND GST 681 Ssw Springdale, SC68 MPH WIND GUST RECORDED AT THE COLUMBIA METROPOLITAN AIRPORT (KCAE) ASOS.
Apr 5, 2:30 PM EDTHAIL 0.881 Wnw Columbia, SCDIME-TO-NICKEL SIZE HAIL REPORTED IN DOWNTOWN COLUMBIA.
Apr 5, 2:35 PM EDTHAIL 1.759 Wsw Rembert, SC
Apr 5, 2:45 PM EDTTSTM WND DMG10 S Fort Jackson, SCA SOCIAL MEDIA REPORT THROUGH LOCAL BROADCAST MEDIA OF A TREE UPROOTED AND LANDED ON A SMALL SHED. ALONG WITH A NEARBY LARGE HARDWOOD TREE SNAPPED.
Apr 5, 2:46 PM EDTTSTM WND DMG7 S Fort Jackson, SCCOUNTY REPORTED POWER LINES DOWN AT GARNER'S FERRY AND TROTTER ROAD.

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.

IssuedProductOfficeLasted
Apr 5, 12:54 PM EDTTornado Watch PDSSPC10 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.3 hours before the alert went out and 135 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, Charleston AFB, SC at 12:00Z on 2017-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 626 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, Charleston AFB, SC at 12:00Z on 2017-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
626 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

520 
WUUS52 KCAE 051817
SVRCAE
SCC017-063-079-051915-
/O.NEW.KCAE.SV.W.0046.170405T1817Z-170405T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
217 PM EDT WED APR 5 2017

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Calhoun County in central South Carolina...
  Southeastern Lexington County in central South Carolina...
  Richland County in central South Carolina...

* Until 315 PM EDT

* At 216 PM EDT, severe thunderstorms were located along a line
  extending from near Dentsville to 14 miles southwest of Red Bank,
  moving northeast at 50 mph.

  HAZARD...60 mph wind gusts and half dollar size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Columbia, Lexington, West Columbia, Cayce, Forest Acres,
  Springdale, Dentsville, Oak Grove, St. Andrews, Red Bank,
  Woodfields, South Congaree, Pine Ridge, St. Matthews, Gaston,
  Arcadia Lakes, Eastover, Woodfield, Fort Jackson and Five Points.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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

&&

A tornado watch remains in effect until 800 PM EDT for central South
Carolina.

LAT...LON 3374 8063 3371 8061 3364 8063 3365 8099
      3371 8104 3365 8120 3375 8143 3424 8101
      3426 8083 3419 8087 3418 8086 3407 8072
      3410 8062 3408 8064 3403 8060 3400 8065
      3397 8062 3385 8063 3379 8060
TIME...MOT...LOC 1816Z 244DEG 43KT 3412 8092 3375 8136 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...60MPH
 
$$

JAQ
1 follow-up statement
677 
WWUS52 KCAE 051853
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
253 PM EDT WED APR 5 2017

SCC017-063-079-051915-
/O.CON.KCAE.SV.W.0046.000000T0000Z-170405T1915Z/
Calhoun SC-Lexington SC-Richland SC-
253 PM EDT WED APR 5 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM EDT
FOR CALHOUN...SOUTHEASTERN LEXINGTON AND RICHLAND COUNTIES...

At 253 PM EDT, severe thunderstorms were located along a line
extending from 8 miles east of Camden to 7 miles south of Fort
Jackson, moving northeast at 50 mph.

HAZARD...70 mph wind gusts and half dollar size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings. 

Locations impacted include...
Columbia, Lexington, West Columbia, Cayce, Forest Acres, Springdale,
Dentsville, Oak Grove, St. Andrews, Red Bank, Woodfields, South
Congaree, Pine Ridge, St. Matthews, Gaston, Arcadia Lakes, Eastover,
Woodfield, Fort Jackson and Five Points.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

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

Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

A tornado watch remains in effect until 800 PM EDT for central South
Carolina.

LAT...LON 3374 8063 3371 8061 3364 8063 3365 8099
      3371 8104 3365 8120 3375 8143 3406 8116
      3418 8086 3407 8072 3410 8062 3408 8064
      3403 8060 3400 8065 3397 8062 3385 8063
      3379 8060
TIME...MOT...LOC 1853Z 244DEG 43KT 3430 8047 3393 8091 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...70MPH
 
$$

JAQ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 4:12 AM EDTFlash Flood WatchCAEAiken, Edgefield, Lexington, McCormick, Richland, Saluda and 1 more16 hr
Apr 5, 8:57 AM EDTSpecial Weather StatementCAELexington63 min
Apr 5, 12:03 PM EDTSevere Thunderstorm WarningCAEMcCormick57 min
Apr 5, 12:48 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry, Saluda42 min
Apr 5, 12:58 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick, Saluda47 min
Apr 5, 1:17 PM EDTTornado WarningCAEEdgefield, Lexington, Saluda43 min
Apr 5, 1:36 PM EDTSevere Thunderstorm WarningCAEAiken, Edgefield, Lexington, Saluda39 min
Apr 5, 1:41 PM EDTSevere Thunderstorm WarningCAELexington, Newberry, Saluda49 min
Apr 5, 1:56 PM EDTTornado WarningCAELexington34 min
Apr 5, 2:01 PM EDTSevere Thunderstorm WarningCAELexington29 min
Apr 5, 2:05 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick40 min
Apr 5, 2:32 PM EDTFlash Flood WarningCAELexington, Richland118 min
Apr 5, 2:32 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell, Orangeburg58 min
Apr 5, 2:37 PM EDTAreal Flood AdvisoryCAEAiken, Edgefield, Lexington, Newberry, Richland, Saluda113 min
Apr 5, 2:39 PM EDTSevere Thunderstorm WarningCAEAiken, Edgefield, McCormick, Saluda48 min
Apr 5, 2:43 PM EDTWind AdvisoryCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more30 hr
Apr 5, 2:47 PM EDTSevere Thunderstorm WarningCAEBamberg43 min
Apr 5, 2:48 PM EDTTornado WarningCAERichland25 min
Apr 5, 3:12 PM EDTSevere Thunderstorm WarningCAELee, Richland, Sumter63 min
Apr 5, 3:16 PM EDTSevere Thunderstorm WarningCAELexington29 min
Apr 5, 3:25 PM EDTSevere Thunderstorm WarningCAECalhoun, Lexington, Orangeburg65 min
Apr 5, 3:33 PM EDTAreal Flood AdvisoryCAEAiken, Calhoun, Kershaw, Lexington, Richland, Sumter117 min
Apr 5, 3:43 PM EDTSevere Thunderstorm WarningCAEAiken, Bamberg, Barnwell, Orangeburg62 min
Apr 5, 3:47 PM EDTSevere Thunderstorm WarningCAEOrangeburg28 min
Apr 5, 3:49 PM EDTRiver Flood WarningCAEEdgefield, McCormick67 hr
Apr 5, 3:55 PM EDTTornado WarningCAEOrangeburg38 min
Apr 5, 4:04 PM EDTSevere Thunderstorm WarningCAECalhoun, Clarendon, Orangeburg, Sumter41 min
Apr 5, 4:17 PM EDTSevere Thunderstorm WarningCAEClarendon, Kershaw, Lee, Richland, Sumter43 min
Apr 5, 4:50 PM EDTAreal Flood AdvisoryCAEOrangeburg55 min
Apr 5, 5:10 PM EDTRiver Flood WarningCAEOrangeburg24 hr
Apr 5, 5:37 PM EDTSpecial Weather StatementCAEClarendon23 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2017Every 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.