Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 184, NWS Columbia, SC

July 16, 2012Lancaster County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jul 16, 2012, 5:24 PM EDT for Lancaster County, South Carolina. It was in force for 51 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: Jul 16, 2012, 5:24 PM EDT (21:24 UTC)
Expired: Jul 16, 2012, 6:15 PM EDT
In force: 51 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

County Lancaster County, SC

The radar

The Columbia radar (KCAE), 90 km from the middle of the area, began a volume at 21:25 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.4 hours before the alert went out and 171 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: 1492 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 920 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jul 16, 1:46 PM EDT, 3 hours 38 minutes earlier.

Area forecast discussion, Jul 16, 1:46 PM EDT, 3 hours 38 minutes before

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Hazardous weather outlook, Jul 16, 3:21 AM EDT, 14 hours 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
321 AM EDT MON JUL 16 2012

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-171000-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
321 AM EDT MON JUL 16 2012

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...TUESDAY THROUGH SUNDAY.

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 16, 2:37 PM EDT, 2 hours 47 minutes before

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Special weather statement, Jul 16, 4:14 PM EDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
414 PM EDT MON JUL 16 2012

SCZ022-162100-
KERSHAW-
414 PM EDT MON JUL 16 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF KERSHAW COUNTY
THROUGH 500 PM EDT...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 11 MILES EAST OF
CAMDEN...TO CAMDEN...TO 8 MILES SOUTHWEST OF LUGOFF. THE STORMS WERE
NEARLY STATIONARY.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
CAMDEN AND LUGOFF...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
DIME SIZE HAIL...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED STREET FLOODING...

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 3428 8044 3427 8043 3422 8043 3421 8045
      3419 8045 3411 8058 3411 8062 3408 8067
      3407 8072 3420 8086 3429 8069 3433 8041
      3430 8037
TIME...MOT...LOC 2014Z 303DEG 0KT 3426 8043 3424 8060
          3414 8077

Local storm report, Jul 16, 5:08 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE COLUMBIA SC
508 PM EDT MON JUL 16 2012

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

0440 PM     TSTM WND DMG     8 NE FORT JACKSON       34.12N 80.79W
07/16/2012                   RICHLAND           SC   PUBLIC

            TREES REPORTED DOWN ALONG I-20 NEAR THE
            RICHLAND AND KERSHAW COUNTY LINE

&&

HC

Special weather statement, Jul 16, 5:14 PM EDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
514 PM EDT MON JUL 16 2012

SCZ015-162145-
LANCASTER-
514 PM EDT MON JUL 16 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LANCASTER COUNTY
THROUGH 545 PM EDT...

AT 511 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM MECKLENBURG COUNTY
TO YORK COUNTY...MOVING SOUTH AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
INDIANLAND AND VAN WYCK...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...

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 3494 8078 3483 8079 3482 8065 3475 8066
      3475 8088 3479 8088 3480 8090 3483 8090
      3484 8087 3490 8088 3492 8087 3501 8091
      3507 8091 3507 8089
TIME...MOT...LOC 2114Z 338DEG 9KT 3517 8077 3497 8100

Special weather statement, Jul 16, 5:18 PM EDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
518 PM EDT MON JUL 16 2012

SCZ027-030-162145-
AIKEN-LEXINGTON-
518 PM EDT MON JUL 16 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF LEXINGTON AND AIKEN
COUNTIES THROUGH 545 PM EDT...

AT 516 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...OVER NORTHERN AIKEN COUNTY NEAR INTERSTATE 20
AND THE LEXINGTON COUNTY LINE...MOVING SOUTHEAST AT 5 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
DIME 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 3377 8126 3360 8143 3376 8163 3390 8149
TIME...MOT...LOC 2117Z 309DEG 3KT 3377 8148

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 2:37 PM EDT	Special Weather Statement	CAE	Chesterfield	23 min
Jul 16, 4:14 PM EDT	Special Weather Statement	CAE	Kershaw	46 min
Jul 16, 4:26 PM EDT	Severe Thunderstorm Warning	CAE	Kershaw, Lee, Richland, Sumter	49 min
Jul 16, 5:18 PM EDT	Special Weather Statement	CAE	Lexington	27 min
Jul 16, 6:00 PM EDT	Areal Flood Advisory	CAE	Richmond	60 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every severe thunderstorm warning 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.