Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

January 21, 2012Laurens County, Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jan 21, 2012, 12:08 PM EST for Laurens County, Union County, South Carolina. It was in force for 37 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
Jan 21, 2012, 12:08 PM EST (17:08 UTC)
Expired
Jan 21, 2012, 12:45 PM EST
In force
37 min
Issued by
NWS Greenville-Spartanburg, SC

Counties Laurens County, SC, Union County, SC

The radar

The Greer radar (KGSP), 50 km from the middle of the area, began a volume at 17:09 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, 5.1 hours before the alert went out and 237 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 12:00Z on 2012-01-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2012-01-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 398 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
467 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
398 m²/s²
0-3 km storm-relative helicity
389 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.

723 
WWUS82 KGSP 211708
SPSGSP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1208 PM EST SAT JAN 21 2012

SCZ007>009-012>014-211745-
CHEROKEE-CHESTER-LAURENS-SPARTANBURG-UNION-YORK-
1208 PM EST SAT JAN 21 2012

...STRONG THUNDERSTORMS WILL AFFECT NORTHERN LAURENS...NORTHWESTERN
CHESTER...SOUTHEASTERN SPARTANBURG...SOUTHERN CHEROKEE...SOUTHWESTERN
YORK AND UNION COUNTIES THROUGH 1245 PM EST...

AT 1205 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTHWEST OF
COWPENS TO HICKORY TAVERN...MOVING SOUTHEAST AT 45 MPH.

THESE STORMS WILL BE NEAR...
  GRAY COURT...
  PACOLET...
  LAURENS...
  JONESVILLE...
  CROSS KEYS...
  UNION...

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH
THESE STORMS.

LAT...LON 3452 8225 3502 8189 3489 8130 3449 8157
      3452 8162 3450 8167 3438 8177

$$
RB

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 21, 7:44 AM ESTSevere Thunderstorm WarningGSPGraham, Haywood, Madison, Swain61 min
Jan 21, 8:15 AM ESTSevere Thunderstorm WarningGSPBuncombe, Haywood, Madison, Yancey40 min
Jan 21, 8:42 AM ESTSpecial Weather StatementGSPJackson, Macon48 min
Jan 21, 9:00 AM ESTSpecial Weather StatementGSPBurke, Caldwell, McDowell45 min
Jan 21, 9:08 AM ESTSpecial Weather StatementGSPBuncombe, Haywood, Henderson, Jackson, Macon, Transylvania37 min
Jan 21, 9:42 AM ESTSpecial Weather StatementGSPHenderson, Polk, Rutherford, Transylvania63 min
Jan 21, 9:57 AM ESTAreal Flood AdvisoryGSPMadison4 hr
Jan 21, 10:25 AM ESTSpecial Weather StatementGSPOconee50 min
Jan 21, 10:34 AM ESTSevere Thunderstorm WarningGSPOconee36 min
Jan 21, 11:14 AM ESTSpecial Weather StatementGSPGreenville, Pickens31 min
Jan 21, 11:16 AM ESTSpecial Weather StatementGSPAnderson44 min
Jan 21, 12:05 PM ESTSpecial Weather StatementGSPAbbeville25 min
Jan 21, 12:25 PM ESTSpecial Weather StatementGSPAbbeville, Greenwood, Laurens35 min
Jan 21, 12:36 PM ESTSpecial Weather StatementGSPChester, Union, York24 min
Jan 21, 12:53 PM ESTSpecial Weather StatementGSPGreenwood37 min
Jan 21, 12:29 PM ESTSpecial Weather StatementGSPElbert31 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.