Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 22, 2012Henderson County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 22, 2012, 11:10 PM EDT for Henderson County, North Carolina. It was in force for 35 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 22, 2012, 11:10 PM EDT (03:10 UTC)
Expired
Aug 22, 2012, 11:45 PM EDT
In force
35 min
Issued by
NWS Greenville-Spartanburg, SC

County Henderson County, NC

The radar

The Greer radar (KGSP), 52 km from the middle of the area, began a volume at 03:10 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.

What was reported inside it

TimeReportWhereRemark
Aug 22, 11:15 PM EDTHAIL 0.755 E Hendersonville, NCPENNY SIZED HAIL FELL IN THE DANA...BLUE RIDGE AREA OF HENDERSON COUNTY.
Aug 22, 11:37 PM EDTTSTM WND DMG1 E Dana, NCA TREE WAS BLOWN ONTO A DOUBLEWIDE MOBILE HOME WITH A MAN INSIDE. THE MAN CAME OUT FROM UNDER THE TREE WITHOUT A SCRATCH.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.2 hours before the alert went out and 295 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, Peachtre/Fal Fld, GA at 00:00Z on 2012-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 302 joules per kilogram.LCLLFCEL10008507005003002001001 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, Peachtre/Fal Fld, GA at 00:00Z on 2012-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 square meters per square second.193958Sfc1 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
302 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
1500 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
-9 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.

376 
WWUS82 KGSP 230310
SPSGSP

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1110 PM EDT WED AUG 22 2012

NCZ065-509-230345-
HENDERSON-POLK MOUNTAINS-
1110 PM EDT WED AUG 22 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN HENDERSON AND
NORTHWESTERN POLK COUNTIES THROUGH 1145 PM EDT...

AT 1109 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR DANA...OR 6 MILES NORTHEAST OF
HENDERSONVILLE...MOVING SOUTHWEST AT 5 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HENDERSONVILLE...

DIME SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS 
STORM. HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS 
DITCHES AND UNDERPASSES. DO NOT DRIVE THROUGH FLOODED 
ROADWAYS...TURN AROUND AND FIND ANOTHER ROUTE. FREQUENT LIGHTNING IS 
ALSO OCCURRING WITH THIS STORM.

LAT...LON 3536 8223 3528 8229 3521 8240 3535 8257
      3548 8234

$$

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 10:40 PM EDTSpecial Weather StatementGSPPolk35 min
Aug 22, 11:29 PM EDTFlash Flood WarningGSPHenderson, Polk, Rutherford2 hr
Aug 23, 2:26 PM EDTSpecial Weather StatementGSPTransylvania49 min
Aug 23, 4:47 PM EDTSpecial Weather StatementGSPBuncombe28 min
Aug 23, 4:54 PM EDTSpecial Weather StatementGSPMadison36 min
Aug 23, 5:24 PM EDTSpecial Weather StatementGSPMadison36 min
Aug 23, 5:46 PM EDTSpecial Weather StatementGSPMadison29 min
Aug 23, 7:38 PM EDTSpecial Weather StatementGSPPolk37 min

Nearby

Special Weather Statements in North 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.