Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 209, NWS Columbia, SC

August 6, 2010Fairfield County, Newberry County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 6, 2010, 4:27 PM EDT for Fairfield County, Newberry County, South Carolina. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 6, 2010, 4:27 PM EDT (20:27 UTC)
Expired
Aug 6, 2010, 5:30 PM EDT
In force
63 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Fairfield County, SC, Newberry County, SC

The radar

The Columbia radar (KCAE), 49 km from the middle of the area, began a volume at 20:26 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Aug 6, 1:25 PM EDTSevere Thunderstorm WatchSPC10 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.5 hours before the alert went out and 204 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 2010-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2833 joules per kilogram.LCLLFCEL10008507005003002001001 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 2010-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 square meters per square second.1939Sfc1 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
2833 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
675 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 6, 1:15 PM EDT, 3 hours 12 minutes earlier.

Area forecast discussion, Aug 6, 1:15 PM EDT, 3 hours 12 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE COLUMBIA SC
115 PM EDT FRI AUG 6 2010

.SYNOPSIS...
AN APPROACHING COLD FRONT WILL MOVE INTO THE AREA TONIGHT AND STALL
THROUGH SUNDAY. HIGH PRESSURE AND HOT TEMPERATURES WILL RETURN
MONDAY.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
VERY UNSTABLE OVER THE AREA THIS AFTERNOON AND SPC IS LEANING
TOWARD A WATCH. EXPECT VERY HEAVY LOCAL RAINS WITH PW VALUES AROUND
2.2 OFF SPC MESOANALYSIS PAGE. BUFKIT ALSO FAVORS STRONG WET
MICROBURSTS WITH COLLAPSING STORMS SO EXPECT WIND DAMAGE AS WELL.
AFTERNOON TEMPS IN THE MID 90S WITH HEAT INDICIES IN THE 102 TO
108 RANGE.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH SUNDAY/...
SCATTERED SEVERE THUNDERSTORMS WILL CONTINUE UNTIL AROUND 10PM.
TEMPS LOWERING INTO THE LOWER 80S IN PRECIP WITH VERY HUMID
CONDITIONS OVERNIGHT. UPPER LEVEL TROUGH LINGERS OVER THE EASTERN
THIRD OF THE NATION. SO...CHANCE OF SHOWERS/TSTMS CONTINUE IN A
MOIST AND UNSTABLE AIR MASS. CLOUDS AND PRECIP SHOULD KEEP DAYTIME
HIGHS IN THE LOW/MID 90S WITH LOWS IN THE MID 70S.

&&

.LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/...
NOT MUCH CHANGE TO EXTENDED MODELS. THE EAST COAST TROUGH WEAKENS
AND UPPER RIDGE TO THE WEST BEGINS TO BUILD TOWARD THE REGION
MONDAY THROUGH WEDNESDAY. HIGHS IN THE UPPER 90S MONDAY THROUGH
WEDNESDAY. UPPER RIDGE WEAKENS A BIT THURSDAY AS SHORT WAVE IN THE
NORTHERN STREAM BEGINS TO MOVE EAST. BUT STILL HOT THURSDAY WITH
HIGHS IN THE UPPER 90S. DRIER IN THE EXTENDED PERIOD WITH FRONT
THAT MOVED SOUTH BUT WILL INCLUDE AT LEAST A SLIGHT CHANCE OF
AFTERNOON AND EVENING THUNDERSTORMS IN MAINLY THE SOUTHERN
LOCATIONS CLOSER TO WHERE OLD FRONT WOULD HAVE DIED OUT. DRIER
NORTHERN PART OF CWA MONDAY AND TUESDAY AS HEAT BUILDS ONCE AGAIN.
WITH MORE MOISTURE OVER REGION WEDNESDAY AND THURSDAY WILL GO
SLIGHT CHANCE AFTERNOON AND EVENING ACTIVITY EVERYWHERE. STILL
WARM AT NIGHTS WITH LOWS MAINLY IN THE LOWER TO MIDDLE 70S.

&&

.AVIATION /17Z FRIDAY THROUGH TUESDAY/...
CONVECTIVE DEBRIS CLOUDS LINGERING OVER MUCH OF THE FORECAST AREA
THIS MORNING. COLD FRONT NEAR THE OH VALLEY WILL SLOWLY MOVE TOWARDS
OUR AREA LATER TODAY. SCTD STRONG STORMS POSSIBLE DURING THE
AFTERNOON HOURS SO HAVE MENTIONED CB AT ALL TAF SITES FROM AROUND
18Z THIS AFTERNOON TO 03Z SATURDAY. MORE DEBRIS CLOUDS POSSIBLE
DURING THE OVERNIGHT HOURS WITH PATCHY MVFR FOG AT AGS AND OGB
DURING THE PREDAWN HOURS SATURDAY MORNING.

EXTENDED AVIATION OUTLOOK...SCATTERED THUNDERSTORMS EXPECTED
SATURDAY.

&&

.CAE WATCHES/WARNINGS/ADVISORIES...
SC...HEAT ADVISORY UNTIL 6 PM EDT THIS EVENING FOR SCZ030-035>037-
     041.
GA...HEAT ADVISORY UNTIL 6 PM EDT THIS EVENING FOR GAZ065-077.

&&

SYNOPSIS...02
NEAR TERM...02
SHORT TERM...02
LONG TERM...02
AVIATION...23
Hazardous weather outlook, Aug 6, 4:31 AM EDT, 11 hours 56 minutes before
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In the hours before

Local storm report, Aug 6, 3:28 PM EDT, 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
328 PM EDT FRI AUG 06 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0310 PM     TSTM WND DMG     PINEWOOD                33.74N 80.46W
08/06/2010                   SUMTER             SC   DEPT OF HIGHWAYS

            HWY DEPT REPORTS TREES DOWN BLOCKING SOUTH HAMPTON ROAD
            IN PINEWOOD

&&

SMITH
Local storm report, Aug 6, 4:13 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
413 PM EDT FRI AUG 06 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     TSTM WND DMG     MANNING                 33.69N 80.22W
08/06/2010                   CLARENDON          SC   LAW ENFORCEMENT

            SHERIFF REPORTED TREES AND POWER LINES DOWN ALONG WITH
            SIGNS ON HIGHWAY 261.

0350 PM     TSTM WND DMG     TURBEVILLE              33.89N 80.02W
08/06/2010                   CLARENDON          SC   LAW ENFORCEMENT

            SHERIFF REPORTED TREES DOWN IN TOWN.

&&

AWP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 6, 12:17 AM EDTAreal Flood AdvisoryCAEChesterfield, Kershaw, Lancaster, Lee, Sumter118 min
Aug 6, 2:25 PM EDTSevere Thunderstorm WarningCAECalhoun, Lee, Richland, Sumter50 min
Aug 6, 3:36 PM EDTSevere Thunderstorm WarningCAEClarendon, Lee, Sumter39 min
Aug 6, 3:45 PM EDTAreal Flood AdvisoryCAEFairfield, Kershaw, Richland3 hr
Aug 6, 5:33 PM EDTSevere Thunderstorm WarningCAEEdgefield, McCormick42 min
Aug 6, 6:00 PM EDTSevere Thunderstorm WarningCAECalhoun, Clarendon, Orangeburg, Sumter45 min
Aug 6, 6:47 PM EDTSevere Thunderstorm WarningCAEAiken, Bamberg, Barnwell, Calhoun, Orangeburg58 min
Aug 6, 7:13 PM EDTTornado WarningCAEOrangeburg26 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010Every severe thunderstorm warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.