Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

July 13, 2012Bamberg County, South Carolina

NWS Charleston, SC issued this special weather statement at Jul 13, 2012, 11:19 AM EDT for Bamberg County, South Carolina. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 13, 2012, 11:19 AM EDT (15:19 UTC)
Expired: Jul 13, 2012, 12:15 PM EDT
In force: 56 min
Issued by: NWS Charleston, SC

County Bamberg County, SC

The radar

The Charleston,SC radar (KCLX), 58 km from the middle of the area, began a volume at 15:19 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 nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 3.3 hours before the alert went out and 75 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: 2764 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 551 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -40 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

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

NWS Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Jul 13, 10:47 AM EDT, 32 minutes earlier.

Area forecast discussion, Jul 13, 10:47 AM EDT, 32 minutes before

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Hazardous weather outlook, Jul 13, 3:42 AM EDT, 7 hours 37 minutes before

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In the hours before

Special weather statement, Jul 13, 11:19 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
ISSUED BY NATIONAL WEATHER SERVICE WILMINGTON NC
1119 AM EDT FRI JUL 13 2012

SCZ043-044-131615-
DORCHESTER-INLAND COLLETON-
1119 AM EDT FRI JUL 13 2012

...A STRONG THUNDERSTORM WILL MOVE ACROSS COLLETON AND DORCHESTER
COUNTIES THROUGH 1215 PM EDT...

AT 1119 AM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
SMOAKS...OR ABOUT 14 MILES SOUTHWEST OF SAINT GEORGE...MOVING
NORTHWEST AT 15 MPH.

SOME LOCATIONS IMPACTED INCLUDE RUFFIN...SMOAKS...WILLIAMS...CAT
HOLE...SMYLY AND SPRINGTOWN.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

HEAVY RAINFALL AND MINOR FLOODING.

THUNDERSTORMS CAN POSE A VARIETY OF THREATS INCLUDING GUSTY WINDS...
SMALL HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALIZED FLOODING. IT
IS RECOMMENDED THAT YOU REMAIN INDOORS UNTIL THE STORMS PASS.

&&

LAT...LON 3308 8062 3298 8083 3312 8090 3313 8090
      3322 8073 3324 8068
TIME...MOT...LOC 1519Z 147DEG 11KT 3310 8080

15

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 12:38 PM EDT	Special Weather Statement	CHS	Screven	67 min
Jul 13, 2:55 PM EDT	Special Weather Statement	CHS	Allendale	50 min
Jul 13, 4:17 PM EDT	Special Weather Statement	CHS	Berkeley	43 min

Nearby

Special Weather Statements in South Carolina, 2012 Every special weather statement in 2012

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.