Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

September 18, 2012Anderson County, South Carolina; Hart County, Georgia

NWS Greenville-Spartanburg, SC issued this special weather statement at Sep 18, 2012, 2:15 PM EDT for Anderson County, South Carolina; Hart County, Georgia. It was in force for 30 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: Sep 18, 2012, 2:15 PM EDT (18:15 UTC)
Expired: Sep 18, 2012, 2:45 PM EDT
In force: 30 min
Issued by: NWS Greenville-Spartanburg, SC

Counties Hart County, GA, Anderson County, SC

The radar

The Greer radar (KGSP), 83 km from the middle of the area, began a volume at 18:15 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 12:00Z, 6.3 hours before the alert went out and 186 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: 491 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 272 m²/s²
0-3 km storm-relative helicity: 292 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 4.3

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 Greenville-Spartanburg, SC wrote its last area forecast discussion before this special weather statement went out at Sep 18, 2:03 PM EDT, 12 minutes earlier.

Area forecast discussion, Sep 18, 2:03 PM EDT, 12 minutes before

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Hazardous weather outlook, Sep 18, 3:08 AM EDT, 11 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
308 AM EDT TUE SEP 18 2012

GAZ010-017-NCZ033-048>053-058-059-062>065-501-503-505-507-509-
SCZ001>003-190715-
RABUN-HABERSHAM-AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-
GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CALDWELL MOUNTAINS-BURKE MOUNTAINS-MCDOWELL MOUNTAINS-
RUTHERFORD MOUNTAINS-POLK MOUNTAINS-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
308 AM EDT TUE SEP 18 2012

...FLOOD WATCH IN EFFECT UNTIL NOON EDT TODAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...WESTERN
NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

THE THREAT FOR LOCALLY HEAVY SHOWERS AND EMBEDDED THUNDERSTORMS WILL
CONTINUE TODAY. THERE IS ALSO THE POSSIBILITY THAT THUNDERSTORMS WILL
BE STRONG ENOUGH TO PRODUCING LOCALIZED DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF DAMAGING
WINDS OR FLASH FLOODING TO OUR OFFICE.

GAZ018-026-028-029-NCZ035>037-056-057-068>072-082-502-504-506-508-
510-SCZ004>014-019-190715-
STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
GREATER CALDWELL-GREATER BURKE-EASTERN MCDOWELL-GREATER RUTHERFORD-
EASTERN POLK-GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-
SPARTANBURG-CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-
CHESTER-GREENWOOD-
308 AM EDT TUE SEP 18 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

THE THREAT OF LOCALLY HEAVY RAIN WILL CONTINUE TODAY AND THUNDERSTORMS
ARE ALSO EXPECTED TO REDEVELOP. LOCALLY STRONG TO SEVERE STORMS
MAY BE SEEN AS WELL...PRODUCING HAIL OR DAMAGING WIND GUSTS...AND
PERHAPS EVEN A BRIEF TORNADO.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF HAIL...DAMAGING
WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

In the hours before

Local storm report, Sep 18, 12:01 PM EDT, 2 hours 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1201 PM EDT TUE SEP 18 2012

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

1140 AM     FLASH FLOOD      JONAS RIDGE             35.97N 81.89W
09/18/2012                   BURKE              NC   BROADCAST MEDIA

            FLOODING OF HIGHWAY NC 183. ROADWAY COVERED FROM FLOODED
            CREEK.

&&

HG

Special weather statement, Sep 18, 12:40 PM EDT, 1 hour 35 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1240 PM EDT TUE SEP 18 2012

NCZ071-082-SCZ009-181730-
MECKLENBURG-UNION-YORK-
1240 PM EDT TUE SEP 18 2012

...STRONG THUNDERSTORMS WILL AFFECT EASTERN YORK...MECKLENBURG AND
UNION COUNTIES THROUGH 130 PM EDT...

AT 1240 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES NORTHWEST OF
LAKE WYLIE TO FORT MILL TO CATAWBA...MOVING NORTHEAST AT 45 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  PAW CREEK...
  I-77 AT I-85...
  MINT HILL...
  UNC CHARLOTTE...
  UNIONVILLE...
  MARSHVILLE...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3483 8031 3481 8043 3481 8079 3494 8079
      3505 8089 3484 8086 3482 8089 3482 8097
      3515 8118 3515 8101 3530 8101 3540 8076
      3535 8069 3527 8066 3517 8046 3495 8030

HG

Special weather statement, Sep 18, 12:41 PM EDT, 1 hour 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1241 PM EDT TUE SEP 18 2012

NCZ036-037-056-057-181745-
CATAWBA-DAVIE-IREDELL-ROWAN-
1241 PM EDT TUE SEP 18 2012

...STRONG THUNDERSTORMS WILL AFFECT DAVIE...EASTERN CATAWBA...IREDELL
AND NORTHERN ROWAN COUNTIES THROUGH 145 PM EDT...

AT 1239 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM COURTNEY TO
CATAWBA...MOVING EAST AT 35 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  STATESVILLE...
  FARMINGTON...
  TROUTMAN...
  BERMUDA RUN...
  ADVANCE...
  COOLEEMEE...

WIND GUSTS OF 40 TO 50 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH
THESE STORMS.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3561 8130 3606 8069 3605 8049 3607 8046
      3601 8041 3599 8041 3596 8037 3589 8036
      3588 8041 3585 8038 3582 8046 3579 8047
      3574 8045 3571 8032 3568 8033 3563 8029

JOH

Special weather statement, Sep 18, 12:45 PM EDT, 1 hour 30 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1245 PM EDT TUE SEP 18 2012

NCZ036-056-057-068>072-508-181745-
CABARRUS-CATAWBA-CLEVELAND-GASTON-GREATER
RUTHERFORD-IREDELL-LINCOLN-MECKLENBURG-ROWAN-
1245 PM EDT TUE SEP 18 2012

...STRONG THUNDERSTORMS WILL AFFECT CLEVELAND...GASTON...LINCOLN...
NORTHWESTERN CABARRUS...NORTHWESTERN MECKLENBURG...SOUTHEASTERN
IREDELL...SOUTHEASTERN RUTHERFORD...SOUTHERN CATAWBA AND SOUTHERN
ROWAN COUNTIES THROUGH 145 PM EDT...

AT 1244 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF
VALE TO CLIFFSIDE...MOVING EAST AT 35 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MAIDEN...
  SHELBY...
  LINCOLNTON...
  TERRELL...
  IRON STATION...
  LAKE NORMAN...

WIND GUSTS OF 40 TO 50 MPH...AND TORRENTIAL RAIN ARE EXPECTED WITH
THESE STORMS.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3564 8036 3516 8103 3519 8194 3561 8135

JOH

Special weather statement, Sep 18, 1:47 PM EDT, 28 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
147 PM EDT TUE SEP 18 2012

GAZ018-026-028-SCZ001-004-010-181815-
ANDERSON-FRANKLIN-GREATER OCONEE-HART-OCONEE MOUNTAINS-STEPHENS-
147 PM EDT TUE SEP 18 2012

...STRONG THUNDERSTORMS WILL AFFECT FRANKLIN...HART...SOUTHERN
OCONEE...STEPHENS AND WESTERN ANDERSON COUNTIES THROUGH 215 PM EDT...

AT 147 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM OAKWAY TO 5 MILES
SOUTH OF EASTANOLEE TO COMMERCE...MOVING NORTHEAST AT 40 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MARTIN...
  SENECA...
  LAKE HARTWELL...
  LAKE KEOWEE...
  ROYSTON...
  LAVONIA...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS. LOW LYING AND POOR DRAINAGE AREAS MAY
EXPERIENCE FLOODING.

LAT...LON 3426 8334 3432 8340 3442 8339 3446 8340
      3448 8346 3466 8336 3486 8291 3479 8288
      3474 8290 3473 8286 3467 8285 3464 8281
      3444 8272 3430 8294 3425 8311 3426 8313
      3423 8317 3426 8331 3422 8335

HG

Special weather statement, Sep 18, 2:15 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
215 PM EDT TUE SEP 18 2012

GAZ028-SCZ004-005-010-181845-
ANDERSON-GREATER OCONEE-GREATER PICKENS-HART-
215 PM EDT TUE SEP 18 2012

...STRONG THUNDERSTORMS WILL AFFECT HART...SOUTHEASTERN OCONEE...
SOUTHWESTERN PICKENS AND WESTERN ANDERSON COUNTIES THROUGH 245 PM
EDT...

AT 215 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM OAKWAY TO 3 MILES
EAST OF WHITWORTH TO ROYSTON...MOVING EAST AT 40 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  SENECA...
  CLEMSON...
  CENTRAL...
  ANDERSON...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH...AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS. THE HEAVY RAINFALL MAY FLOOD LOW LYING
AND POOR DRAINAGE AREAS. IN ADDITION...THE GUSTY WINDS COULD TOPPLE
A FEW TREES IN AREAS WITH VERY WET SOIL.

LAT...LON 3427 8312 3428 8310 3441 8310 3450 8305
      3451 8308 3453 8308 3456 8313 3462 8314
      3471 8303 3487 8266 3464 8256 3437 8264
      3423 8309

HG

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 18, 2:21 AM EDT	Areal Flood Advisory	GSP	Mitchell	2 hr
Sep 18, 2:46 AM EDT	Areal Flood Advisory	GSP	Avery	4 hr
Sep 18, 9:20 AM EDT	Areal Flood Advisory	GSP	Avery, Mitchell	5 hr
Sep 18, 10:06 AM EDT	Flash Flood Warning	GSP	Avery, Mitchell	4 hr
Sep 18, 10:32 AM EDT	Special Weather Statement	GSP	Alexander, Burke, Caldwell, Rutherford	43 min
Sep 18, 10:48 AM EDT	Areal Flood Advisory	GSP	Buncombe, Burke, Henderson, McDowell, Rutherford	4 hr
Sep 18, 11:29 AM EDT	Special Weather Statement	GSP	Cabarrus	46 min
Sep 18, 11:48 AM EDT	Special Weather Statement	GSP	Alexander, Catawba, Davie, Iredell	42 min
Sep 18, 12:40 PM EDT	Special Weather Statement	GSP	Mecklenburg, Union	50 min
Sep 18, 12:41 PM EDT	Special Weather Statement	GSP	Catawba, Davie, Iredell, Rowan	64 min
Sep 18, 12:45 PM EDT	Special Weather Statement	GSP	Cleveland, Gaston, Lincoln	60 min
Sep 18, 12:59 PM EDT	Areal Flood Warning	GSP	Henderson, Transylvania	94 min
Sep 18, 1:08 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Iredell, Mecklenburg, Rowan	42 min
Sep 18, 4:39 PM EDT	Special Weather Statement	GSP	Cleveland	36 min
Sep 18, 10:42 AM EDT	Special Weather Statement	GSP	Greenwood, Laurens	48 min
Sep 18, 11:23 AM EDT	Special Weather Statement	GSP	Union	37 min
Sep 18, 11:39 AM EDT	Special Weather Statement	GSP	Union	36 min
Sep 18, 11:53 AM EDT	Special Weather Statement	GSP	Cherokee	37 min
Sep 18, 1:47 PM EDT	Special Weather Statement	GSP	Oconee	28 min
Sep 18, 2:42 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenville, Oconee, Pickens	63 min

Nearby

Special Weather Statements in South Carolina, 2012 Special Weather Statements in Georgia, 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.