Alert archive / South Carolina / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 73, NWS Columbia, SC

May 24, 2017Lancaster County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at May 24, 2017, 3:48 PM EDT for Lancaster County, South Carolina. It was in force for 42 min. 6 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
May 24, 2017, 3:48 PM EDT (19:48 UTC)
Expired
May 24, 2017, 4:30 PM EDT
In force
42 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Lancaster County, SC

The radar

The Columbia radar (KCAE), 91 km from the middle of the area, began a volume at 19:51 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
May 24, 4:01 PM EDTFUNNEL CLOUDLancaster, SC3 TRAINED SPOTTERS REPORTED FUNNEL CLOUDS WITH ROTATION IN THE BUFORD, BROOKLYN AND ELGIN COMMUNITIES IN THE LANCASTER AREA.
May 24, 4:02 PM EDTFUNNEL CLOUD7 Ne Elgin, SC3 TRAINED SPOTTERS REPORTED FUNNEL CLOUDS WITH ROTATION IN THE BUFORD, BROOKLYN AND ELGIN COMMUNITIES IN THE LANCASTER AREA. THIS IS A CORRECTION FOR COORDINATES.
May 24, 4:02 PM EDTHAIL 0.251 Wnw Lancaster Mill, SCPEA SIZE HAIL REPORTED IN THE BUFORD COMMUNITY.
May 24, 4:13 PM EDTTSTM WND DMG6 Nne Lancaster, SCTREES IN ROADWAY MONROE HIGHWAY AND CAPRICORN ROAD.
May 24, 4:19 PM EDTTSTM WND DMG11 Ne Elgin, SCTREES IN ROADWAY CAMP CREEK AND GEORGE CARNES ROAD.
May 24, 4:19 PM EDTTORNADO10 Ne Lancaster, SCNWS STORM SURVEY TEAM FOUND EF-0 TORNADO DAMAGE IN EXTREME NORTHERN LANCASTER COUNTY FROM SHILOH UNITY ROAD NORTHEAST TO THE NORTH CAROLINA STATE LINE. THE DAMAGE WAS MOSTLY CONFINED TO A CROP FIELD AND TREES. THE PATH WAS 50 YARDS OR SHORTER IN WIDTH WITH A L

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
May 24, 10:04 AM EDTTornado WatchSPC11 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.8 hours before the alert went out and 170 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, Greensboro/Hi Pt, NC at 12:00Z on 2017-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 52 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, Greensboro/Hi Pt, NC at 12:00Z on 2017-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 square meters per square second.19395878Sfc1 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
52 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

825 
WUUS52 KCAE 241948
SVRCAE
SCC057-242030-
/O.NEW.KCAE.SV.W.0073.170524T1948Z-170524T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Columbia SC
348 PM EDT WED MAY 24 2017

The National Weather Service in Columbia has issued a

* Severe Thunderstorm Warning for...
  Lancaster County in central South Carolina...

* Until 430 PM EDT

* At 348 PM EDT, a severe thunderstorm was located near Fishing 
  Creek Reservoir, or 8 miles south-southwest of Lancaster, moving 
  northeast at 40 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

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

* Locations impacted include...
  Lancaster, Elgin, Heath Springs, Irwin and Lancaster Mill. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

A tornado watch remains in effect until 600 PM EDT for central South
Carolina. A tornado watch also remains in effect until 600 PM EDT for
central South Carolina.

LAT...LON 3489 8079 3482 8079 3482 8056 3479 8055
      3477 8052 3471 8049 3466 8044 3449 8087
      3452 8088 3457 8087 3460 8089 3467 8089
      3469 8086 3473 8087
TIME...MOT...LOC 1948Z 214DEG 36KT 3460 8083 

HAIL...1.00IN
WIND...60MPH
 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 2:28 AM EDTSpecial Weather StatementCAEBamberg47 min
May 24, 1:21 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick39 min
May 24, 1:57 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick48 min
May 24, 2:30 PM EDTSevere Thunderstorm WarningCAEEdgefield, Lexington, Newberry, Saluda45 min
May 24, 2:33 PM EDTTornado WarningCAEEdgefield, Saluda27 min
May 24, 2:57 PM EDTAreal Flood AdvisoryCAEEdgefield, McCormick, Saluda2 hr
May 24, 3:00 PM EDTTornado WarningCAEFairfield, Lexington, Newberry, Richland, Saluda30 min
May 24, 3:14 PM EDTSevere Thunderstorm WarningCAEFairfield, Lexington, Newberry, Richland, Saluda61 min
May 24, 3:28 PM EDTTornado WarningCAEFairfield, Newberry32 min
May 24, 3:54 PM EDTTornado WarningCAELancaster36 min
May 24, 4:12 PM EDTAreal Flood AdvisoryCAEFairfield, Lexington, Newberry, Richland, Saluda2 hr
May 24, 4:48 PM EDTSpecial Weather StatementCAEAiken27 min
May 24, 5:40 PM EDTRiver Flood AdvisoryCAELexington, Richland48 hr
May 24, 6:46 PM EDTRiver Flood WarningCAECalhoun, Lexington, Richland3 days

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.