Alert archive / South Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Columbia, SC

August 19, 2011Fairfield County, South Carolina

NWS Columbia, SC issued this special weather statement at Aug 19, 2011, 9:30 PM EDT for Fairfield County, South Carolina. It was in force for 60 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: Aug 19, 2011, 9:30 PM EDT (01:30 UTC)
Expired: Aug 19, 2011, 10:30 PM EDT
In force: 60 min
Issued by: NWS Columbia, SC

County Fairfield County, SC

The radar

The Columbia radar (KCAE), 33 km from the middle of the area, began a volume at 01:31 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.5 hours before the alert went out and 317 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: 242 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 2109 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Columbia, SC wrote its last area forecast discussion before this special weather statement went out at Aug 19, 8:28 PM EDT, 1 hour 2 minutes earlier.

Area forecast discussion, Aug 19, 8:28 PM EDT, 1 hour 2 minutes before

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Hazardous weather outlook, Aug 19, 4:26 AM EDT, 17 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
426 AM EDT FRI AUG 19 2011

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-200830-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
426 AM EDT FRI AUG 19 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 19, 3:43 PM EDT, 5 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
343 PM EDT FRI AUG 19 2011

SCZ036>038-192045-
CALHOUN-CLARENDON-ORANGEBURG-
343 PM EDT FRI AUG 19 2011

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CALHOUN...CLARENDON
AND ORANGEBURG COUNTIES THROUGH 500 PM EDT...

AT 332 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A CLUSTER OF THUNDERSTORMS OVER MUCH OF CALHOUN COUNTY...MOVING
SOUTHEASTWARD NEAR 15 MPH.

PARTS OF ORANGEBURG COUNTY AND SOUTHERN CLARENDON COUNTY ARE
IN THE PATH OF THESE STORMS. THIS INCLUDES THE LAKE MARION AREA.

SOME OF THESE THUNDERSTORMS WILL CONTAIN WIND GUSTS NEAR 45 MPH...
FREQUENT LIGHTNING...AND HEAVY DOWNPOURS.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BOWMAN...BRANCHVILLE...ORANGEBURG...AND THE LAKE MARION AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THUNDERSTORMS POSE A VARIETY OF THREATS TO BOATERS ON LAKE MARION.
YOUR BEST COURSE OF ACTION DURING A THUNDERSTORM IS TO SEEK SAFE
HARBOR. IF YOU ARE CAUGHT IN THE OPEN LAKE WATERS...STAY BELOW
DECK...AND IF POSSIBLE...AWAY FROM UNGROUNDED METAL OBJECTS.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

&&

LAT...LON 3351 8009 3348 8014 3344 8015 3344 8022
      3335 8023 3328 8030 3325 8043 3328 8049
      3333 8051 3318 8080 3366 8114 3374 8067
      3370 8059 3364 8053 3367 8050
TIME...MOT...LOC 1940Z 304DEG 11KT 3362 8062

Special weather statement, Aug 19, 9:30 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
930 PM EDT FRI AUG 19 2011

SCZ020-021-028-200230-
FAIRFIELD-NEWBERRY-RICHLAND-
930 PM EDT FRI AUG 19 2011

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF FAIRFIELD...NEWBERRY
AND RICHLAND COUNTIES THROUGH 1030 PM EDT...

AT 923 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...9 MILES NORTH OF PEAK...MOVING SOUTHEAST AT 10
TO 15 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
IRMO AND WINNSBORO...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
WINDS 30 TO 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THUNDERSTORMS POSE A VARIETY OF THREATS TO BOATERS ON LAKE
MONTICELLO AND PARR RESERVOIR. YOUR BEST COURSE OF ACTION DURING A
THUNDERSTORM IS TO SEEK SAFE HARBOR. IF YOU ARE CAUGHT IN THE OPEN
LAKE WATERS...STAY BELOW DECK...AND IF POSSIBLE...AWAY FROM
UNGROUNDED METAL OBJECTS.

REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.

&&

LAT...LON 3428 8083 3408 8116 3410 8121 3410 8125
      3415 8131 3416 8130 3420 8134 3419 8136
      3432 8150 3445 8140 3449 8127
TIME...MOT...LOC 0130Z 309DEG 20KT 3434 8126

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 11:00 PM EDT	Special Weather Statement	CAE	Lexington	60 min
Aug 20, 3:10 PM EDT	Special Weather Statement	CAE	Lexington	50 min
Aug 20, 3:44 PM EDT	Special Weather Statement	CAE	Bamberg	61 min
Aug 20, 3:50 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Lexington, Orangeburg	40 min
Aug 20, 4:03 PM EDT	Special Weather Statement	CAE	Clarendon	57 min
Aug 20, 4:06 PM EDT	Areal Flood Advisory	CAE	Clarendon	114 min
Aug 20, 4:50 PM EDT	Special Weather Statement	CAE	Calhoun	40 min
Aug 20, 5:08 PM EDT	Severe Thunderstorm Warning	CAE	Calhoun, Richland, Sumter	37 min
Aug 20, 6:56 PM EDT	Special Weather Statement	CAE	Newberry	34 min
Aug 20, 12:34 AM EDT	Special Weather Statement	CAE	McDuffie	41 min

Nearby

Special Weather Statements in South Carolina, 2011 Every special weather statement in 2011

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.