Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Columbia, SC

July 29, 2012Clarendon County, Richland County, Sumter County, South Carolina

NWS Columbia, SC issued this special weather statement at Jul 29, 2012, 7:57 PM EDT for Clarendon County, Richland County, Sumter 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 outline as issued.

The facts

Issued: Jul 29, 2012, 7:57 PM EDT (23:57 UTC)
Expired: Jul 29, 2012, 9:00 PM EDT
In force: 63 min
Issued by: NWS Columbia, SC

Counties Clarendon County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 64 km from the middle of the area, began a volume at 23:57 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, 12.0 hours before the alert went out and 131 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: 2597 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 738 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 38 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 Columbia, SC wrote its last area forecast discussion before this special weather statement went out at Jul 29, 5:53 PM EDT, 2 hours 4 minutes earlier.

Area forecast discussion, Jul 29, 5:53 PM EDT, 2 hours 4 minutes before

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Hazardous weather outlook, Jul 29, 4:42 AM EDT, 15 hours 15 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
442 AM EDT SUN JUL 29 2012

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-300845-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
442 AM EDT SUN JUL 29 2012

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED AFTERNOON AND EVENING THUNDERSTORMS WILL POSSIBLE. A
FEW OF THE THUNDERSTORMS MAY CONTAIN DAMAGING WINDS AND HEAVY
RAINFALL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

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, Jul 29, 3:25 PM EDT, 4 hours 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
325 PM EDT SUN JUL 29 2012

GAZ065-077-SCZ030-292000-
AIKEN-BURKE-RICHMOND-
325 PM EDT SUN JUL 29 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF RICHMOND...BURKE AND
AIKEN COUNTIES THROUGH 400 PM EDT...

AT 317 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 8 MILES NORTHEAST
OF HEPHZIBAH TO 14 MILES SOUTHWEST OF WAYNESBORO...MOVING EAST AT 10
MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
HEPHZIBAH AND WAYNESBORO...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 30 TO 40 MPH...
PEA SIZE HAIL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3326 8170 3292 8201 3302 8228 3340 8204
TIME...MOT...LOC 1925Z 275DEG 8KT 3334 8197 3301 8222

Special weather statement, Jul 29, 5:45 PM EDT, 2 hours 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
545 PM EDT SUN JUL 29 2012

SCZ027-036-037-292245-
CALHOUN-LEXINGTON-ORANGEBURG-
545 PM EDT SUN JUL 29 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LEXINGTON...CALHOUN
AND ORANGEBURG COUNTIES THROUGH 645 PM EDT...

AT 545 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 8 THROUGH SWANSEA
TO PELION...MOVING EAST AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ST. MATTHEWS...
WOODFORD...
NORTH...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

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 3353 8120 3361 8124 3366 8119 3370 8128
      3377 8131 3381 8087 3378 8082 3378 8081
      3376 8077 3357 8072
TIME...MOT...LOC 2144Z 281DEG 10KT 3373 8086 3370 8124

Special weather statement, Jul 29, 5:47 PM EDT, 2 hours 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
547 PM EDT SUN JUL 29 2012

SCZ027-036-037-292245-
CALHOUN-LEXINGTON-ORANGEBURG-
547 PM EDT SUN JUL 29 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LEXINGTON...CALHOUN
AND ORANGEBURG COUNTIES THROUGH 645 PM EDT...

AT 545 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM ST. MATTHEWS
THROUGH SWANSEA TO PELION...MOVING EAST AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ST. MATTHEWS...
WOODFORD...
NORTH...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

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 3353 8120 3361 8124 3366 8119 3370 8128
      3377 8131 3381 8087 3378 8082 3378 8081
      3376 8077 3357 8072
TIME...MOT...LOC 2144Z 281DEG 10KT 3373 8086 3370 8124

Special weather statement, Jul 29, 7:57 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 8:01 PM EDT	Special Weather Statement	CAE	Fairfield, Lancaster	59 min
Jul 28, 8:21 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lancaster	39 min
Jul 28, 9:04 PM EDT	Special Weather Statement	CAE	Lancaster	56 min
Jul 28, 9:08 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lancaster	52 min
Jul 28, 10:28 PM EDT	Special Weather Statement	CAE	Chesterfield	62 min
Jul 28, 10:35 PM EDT	Special Weather Statement	CAE	Fairfield	55 min
Jul 28, 10:37 PM EDT	Special Weather Statement	CAE	Lexington	53 min
Jul 28, 11:28 PM EDT	Special Weather Statement	CAE	Lancaster	47 min
Jul 28, 11:50 PM EDT	Special Weather Statement	CAE	Kershaw, Lee	55 min
Jul 29, 1:08 AM EDT	Special Weather Statement	CAE	Lee, Sumter	67 min
Jul 29, 3:14 PM EDT	Severe Thunderstorm Warning	CAE	Orangeburg	25 min
Jul 29, 3:51 PM EDT	Severe Thunderstorm Warning	CAE	Aiken, Barnwell	24 min
Jul 29, 5:45 PM EDT	Special Weather Statement	CAE	Calhoun	60 min
Jul 29, 5:47 PM EDT	Special Weather Statement	CAE	Calhoun	58 min
Jul 29, 6:28 PM EDT	Areal Flood Advisory	CAE	Bamberg, Calhoun, Lexington, Orangeburg	99 min
Jul 29, 7:42 PM EDT	Areal Flood Advisory	CAE	Richland	48 min
Jul 28, 8:33 PM EDT	Severe Thunderstorm Warning	CAE	Burke	57 min
Jul 29, 3:25 PM EDT	Special Weather Statement	CAE	Burke	35 min
Jul 29, 3:28 PM EDT	Severe Thunderstorm Warning	CAE	Burke	47 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.