Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

August 22, 2012Gaston County, North Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Aug 22, 2012, 6:39 PM EDT for Gaston County, North 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 outline as issued.

The facts

Issued: Aug 22, 2012, 6:39 PM EDT (22:39 UTC)
Expired: Aug 22, 2012, 7:30 PM EDT
In force: 51 min
Issued by: NWS Greenville-Spartanburg, SC

County Gaston County, NC

The radar

The Greer radar (KGSP), 103 km from the middle of the area, began a volume at 22:40 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, 10.7 hours before the alert went out and 150 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: 827 J/kg
Mixed-layer CIN: -16 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 40 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 Aug 22, 6:22 PM EDT, 17 minutes earlier.

Area forecast discussion, Aug 22, 6:22 PM EDT, 17 minutes before

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Hazardous weather outlook, Aug 22, 3:23 PM EDT, 3 hours 16 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
323 PM EDT WED AUG 22 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-232000-
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-
323 PM EDT WED AUG 22 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED TO ISOLATED THUNDERSTORMS WILL DEVELOP ACROSS THE
WESTERN CAROLINAS AND NORTHEAST GEORGIA THIS AFTERNOON AND EVENING.
OCCASIONAL CLOUD TO GROUND LIGHTNING WILL BE THE PRIMARY THREAT
WITH THESE STORMS. SLOW MOVING STORMS OVER URBAN AREAS AND OTHER
POORLY DRAINED AREAS COULD RESULT IN EXCESSIVE RAINFALL.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

WIMBERLEY

In the hours before

Special weather statement, Aug 22, 6:39 PM EDT, 0 minutes before

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

NCZ070-222330-
GASTON-
639 PM EDT WED AUG 22 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL GASTON COUNTY THROUGH
730 PM EDT...

AT 637 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LOWELL...OR 3 MILES EAST OF GASTONIA...
MOVING WEST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  GASTONIA...

WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

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 3516 8113 3516 8123 3516 8124 3530 8129
      3530 8106 3522 8104

LANE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 9:18 PM EDT	Special Weather Statement	GSP	Catawba	27 min
Aug 21, 9:41 PM EDT	Special Weather Statement	GSP	Catawba	34 min
Aug 21, 10:17 PM EDT	Special Weather Statement	GSP	Catawba	28 min
Aug 22, 6:46 PM EDT	Areal Flood Advisory	GSP	Davie, Rowan	74 min
Aug 22, 7:18 PM EDT	Special Weather Statement	GSP	Cleveland	42 min

Nearby

Special Weather Statements in North Carolina, 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.