Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

October 18, 2012Oconee County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Oct 18, 2012, 10:44 PM EDT for Oconee County, South Carolina. It was in force for 31 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
Oct 18, 2012, 10:44 PM EDT (02:44 UTC)
Expired
Oct 18, 2012, 11:15 PM EDT
In force
31 min
Issued by
NWS Greenville-Spartanburg, SC

County Oconee County, SC

The radar

The Greer radar (KGSP), 74 km from the middle of the area, began a volume at 02:45 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 00:00Z, 2.7 hours before the alert went out and 306 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-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 00:00Z on 2012-10-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 744 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 00:00Z on 2012-10-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 121 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
744 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
810 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
121 m²/s²
0-3 km storm-relative helicity
166 m²/s²
Significant tornado parameter
0.5
Supercell composite
2.5

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 Oct 18, 10:03 PM EDT, 41 minutes earlier.

Area forecast discussion, Oct 18, 10:03 PM EDT, 41 minutes before
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Hazardous weather outlook, Oct 18, 5:24 PM EDT, 5 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
524 PM EDT THU OCT 18 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-192130-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
524 PM EDT THU OCT 18 2012

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

.DAY ONE...TONIGHT.

A COLD FRONT WILL MOVE THROUGH THE REGION THIS EVENING. AS THE
COLD FRONT MOVES ACROSS THE FOOTHILLS AND PIEDMONT A FEW
THUNDERSTORMS MAY REDEVELOP BY LATE AFTERNOON AND THEN MOVE TO THE
INTERSTATE 77 CORRIDOR DURING THE LATE EVENING HOURS. SOME OF THE
STORMS COULD PRODUCE GUSTY GUSTS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Oct 18, 8:17 PM EDT, 2 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
817 PM EDT THU OCT 18 2012

NCZ037-057-190045-
DAVIE-ROWAN-
817 PM EDT THU OCT 18 2012

...A STRONG THUNDERSTORM WILL AFFECT DAVIE AND NORTHWESTERN ROWAN
COUNTIES THROUGH 845 PM EDT...

AT 815 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF CLEVELAND...OR 11 MILES
SOUTHEAST OF STATESVILLE...MOVING NORTHEAST AT 45 MPH.

PEOPLE IN DAVIE AND NORTHWESTERN ROWAN COUNTIES...INCLUDING THE
FOLLOWING LOCATIONS...

CLEVELAND AND COOLEEMEE...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

DIME SIZE HAIL IS EXPECTED WITH THIS STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3584 8039 3584 8041 3582 8047 3579 8047
      3577 8045 3574 8045 3572 8041 3560 8075
      3569 8077 3586 8070 3600 8070 3597 8040
      3589 8039 3588 8041 3587 8039

NED
Special weather statement, Oct 18, 8:47 PM EDT, 1 hour 57 minutes before
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Local storm report, Oct 18, 8:59 PM EDT, 1 hour 45 minutes before
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Special weather statement, Oct 18, 9:23 PM EDT, 1 hour 21 minutes before
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Special weather statement, Oct 18, 10:04 PM EDT, 40 minutes before
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Special weather statement, Oct 18, 10:44 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 8:17 PM EDTSpecial Weather StatementGSPDavie28 min
Oct 18, 8:26 PM EDTSevere Thunderstorm WarningGSPDavie, Rowan18 min
Oct 18, 9:23 PM EDTSpecial Weather StatementGSPMecklenburg37 min
Oct 18, 8:47 PM EDTSpecial Weather StatementGSPYork28 min
Oct 18, 10:04 PM EDTSpecial Weather StatementGSPRabun26 min

Nearby

Special Weather Statements in South Carolina, 2012Every 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.