Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 35, NWS Columbia, SC

April 3, 20174 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Apr 3, 2017, 4:57 PM EDT for 4 counties in South Carolina. It was in force for 48 min. 2 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 3, 2017, 4:57 PM EDT (20:57 UTC)
Expired
Apr 3, 2017, 5:45 PM EDT
In force
48 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Bamberg County, SC, Calhoun County, SC, Clarendon County, SC, Orangeburg County, SC

The radar

The Columbia radar (KCAE), 78 km from the middle of the area, began a volume at 21:01 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 3, 5:18 PM EDTTSTM WND DMG4 Nnw Cameron, SCDEPUTY FIRE CHIEF REPORTS TREES AND POWER POLES DOWN ALONG SIKES, RD AND MOORER RD NEAR BELLEVILLE, RD. TWO COMMERCIAL STRUCTURES IN THE AREA SUSTAINED MAJOR DAMAGE WITH MINOR ROOF DAMAGE TO SEVERAL HOMES.
Apr 3, 5:18 PM EDTTORNADO4 Nnw Cameron, SCIMAGES FROM CERTIFIED STORM SPOTTER SHOWS MULTIPLE TREES SNAPPED OR UPROOTED, SNAPPED AND KNOCKED OVER POWER POLES AND DAMAGE TO A BARN. STORM SURVEY WILL BE CONDUCTED.

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 3, 2:07 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 9.0 hours before the alert went out and 81 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 2017-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2017-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1059 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

898 
WUUS52 KCAE 032057
SVRCAE
SCC009-017-027-075-032145-
/O.NEW.KCAE.SV.W.0035.170403T2057Z-170403T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
457 PM EDT MON APR 3 2017

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Calhoun County in central South Carolina...
  Clarendon County in central South Carolina...
  Bamberg County in central South Carolina...
  Orangeburg County in central South Carolina...

* Until 545 PM EDT

* At 456 PM EDT, severe thunderstorms were located along a line
  extending from near St. Matthews to near Ulmer, moving east at 65
  mph.

  HAZARD...70 mph wind gusts and quarter 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...
  Orangeburg, Manning, Bamberg, Brookdale, St. Matthews, Holly Hill,
  Branchville, Summerton, Bowman, Elloree, Santee, Turbeville,
  Ehrhardt, Pinewood, Cameron, Eutawville, Rowesville, Paxville,
  Vance and Cordova.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage across the CSRA and the midlands. SEEK SHELTER NOW 
inside a sturdy structure and stay away from windows! &&

A tornado watch remains in effect until 900 PM EDT for central South
Carolina.

LAT...LON 3377 7999 3350 8010 3345 8022 3327 8030
      3326 8043 3333 8051 3313 8089 3306 8090
      3310 8094 3303 8108 3309 8116 3378 8081
      3377 8066 3365 8053 3374 8045 3372 8039
      3377 8040 3394 7998 3388 7994 3389 7988
TIME...MOT...LOC 2056Z 251DEG 58KT 3373 8079 3307 8112 

HAIL...1.00IN
WIND...70MPH
 
$$
fwa
1 follow-up statement
459 
WWUS52 KCAE 032131
SVSCAE

Severe Weather Statement
National Weather Service Columbia SC
531 PM EDT MON APR 3 2017

SCC009-032139-
/O.CAN.KCAE.SV.W.0035.000000T0000Z-170403T2145Z/
Bamberg SC-
531 PM EDT MON APR 3 2017

...THE SEVERE THUNDERSTORM WARNING FOR BAMBERG COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore the warning has been cancelled.

A tornado watch remains in effect until 900 PM EDT for central South
Carolina.

LAT...LON 3377 7999 3350 8010 3345 8022 3327 8030
      3326 8043 3333 8051 3318 8080 3377 8071
      3377 8066 3365 8053 3374 8045 3372 8039
      3377 8040 3394 7998 3388 7994 3389 7988
TIME...MOT...LOC 2129Z 251DEG 58KT 3389 8021 3324 8054 

$$

SCC017-027-075-032145-
/O.CON.KCAE.SV.W.0035.000000T0000Z-170403T2145Z/
Calhoun SC-Clarendon SC-Orangeburg SC-
531 PM EDT MON APR 3 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHEASTERN CALHOUN...CLARENDON AND SOUTHEASTERN ORANGEBURG
COUNTIES...

At 529 PM EDT, severe thunderstorms were located along a line
extending from 7 miles east of South Sumter to Indian Field, moving
east at 65 mph.

HAZARD...70 mph wind gusts and quarter 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...
Manning, Holly Hill, Summerton, Bowman, Elloree, Santee, Turbeville,
Pinewood, Cameron, Eutawville, Paxville and Vance.

A Tornado Warning remains in effect for a portion of Calhoun County.

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.

This is a DANGEROUS SITUATION. These storms are producing widespread 
wind damage. SEEK SHELTER NOW inside a sturdy structure and stay 
away from windows.
 
&&

A tornado watch remains in effect until 900 PM EDT for central South
Carolina.

LAT...LON 3377 7999 3350 8010 3345 8022 3327 8030
      3326 8043 3333 8051 3318 8080 3377 8071
      3377 8066 3365 8053 3374 8045 3372 8039
      3377 8040 3394 7998 3388 7994 3389 7988
TIME...MOT...LOC 2129Z 251DEG 58KT 3389 8021 3324 8054 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH
 
$$

JAQ

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 3:52 AM EDTLake Wind AdvisoryCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more20 hr
Apr 3, 12:06 PM EDTSpecial Weather StatementCAEEdgefield, McCormick24 min
Apr 3, 1:42 PM EDTSpecial Weather StatementCAEAiken33 min
Apr 3, 2:20 PM EDTAreal Flood AdvisoryCAELexington, Richland48 hr
Apr 3, 2:27 PM EDTAreal Flood AdvisoryCAELexington, Richland2 hr
Apr 3, 2:47 PM EDTSevere Thunderstorm WarningCAEMcCormick58 min
Apr 3, 3:07 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell53 min
Apr 3, 3:17 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry, Saluda58 min
Apr 3, 3:28 PM EDTSevere Thunderstorm WarningCAEEdgefield62 min
Apr 3, 3:31 PM EDTTornado WarningCAEEdgefield, McCormick29 min
Apr 3, 3:42 PM EDTSpecial Weather StatementCAEKershaw33 min
Apr 3, 3:42 PM EDTTornado WarningCAEBarnwell48 min
Apr 3, 3:57 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell, Lexington33 min
Apr 3, 4:10 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster65 min
Apr 3, 4:12 PM EDTAreal Flood AdvisoryCAELexington, Richland3 hr
Apr 3, 4:15 PM EDTSevere Thunderstorm WarningCAECalhoun, Lexington, Newberry, Richland, Saluda45 min
Apr 3, 4:18 PM EDTSevere Thunderstorm WarningCAEBamberg, Calhoun, Orangeburg42 min
Apr 3, 4:32 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell28 min
Apr 3, 4:33 PM EDTTornado WarningCAELexington26 min
Apr 3, 4:51 PM EDTFlash Flood WarningCAERichland114 min
Apr 3, 4:51 PM EDTSevere Thunderstorm WarningCAEChesterfield, Kershaw, Lee, Sumter54 min
Apr 3, 4:55 PM EDTSevere Thunderstorm WarningCAEKershaw, Lee, Richland, Sumter50 min
Apr 3, 5:01 PM EDTSevere Thunderstorm WarningCAECalhoun, Kershaw, Richland33 min
Apr 3, 5:11 PM EDTTornado WarningCAECalhoun, Sumter34 min
Apr 3, 5:45 PM EDTSevere Thunderstorm WarningCAEChesterfield15 min
Apr 3, 5:46 PM EDTSevere Thunderstorm WarningCAEClarendon, Lee, Orangeburg, Sumter29 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.