Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

July 21, 2012Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jul 21, 2012, 3:49 PM EDT for Anderson County, South Carolina. It was in force for 26 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: Jul 21, 2012, 3:49 PM EDT (19:49 UTC)
Expired: Jul 21, 2012, 4:15 PM EDT
In force: 26 min
Issued by: NWS Greenville-Spartanburg, SC

County Anderson County, SC

The radar

The Greer radar (KGSP), 28 km from the middle of the area, began a volume at 19:52 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, 7.8 hours before the alert went out and 241 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: 1759 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 513 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 17 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.

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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 Jul 21, 3:36 PM EDT, 13 minutes earlier.

Area forecast discussion, Jul 21, 3:36 PM EDT, 13 minutes before

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Hazardous weather outlook, Jul 21, 12:38 PM EDT, 3 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1238 PM EDT SAT JUL 21 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-221645-
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-
1238 PM EDT SAT JUL 21 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.

NUMEROUS THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE SLOWLY
ACROSS THE AREA THIS AFTERNOON AND EVENING. THE STRONGEST STORMS
HAVE THE POTENTIAL TO PRODUCE SMALL AREAS OF DAMAGING DOWNBURST
WINDS. LARGE HAIL IS POSSIBLE BUT LESS LIKELY. STRONG GUSTY WINDS
AND CLOUD TO GROUND LIGHTNING ARE POSSIBLE WITH ANY STORM. LOCALLY
HEAVY RAINFALL IS LIKELY...AND COULD LEAD TO FLOODING...ESPECIALLY
LOCATIONS WHERE STORMS REPEATEDLY MOVE OVER.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jul 21, 2:46 PM EDT, 1 hour 3 minutes before

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Special weather statement, Jul 21, 3:12 PM EDT, 37 minutes before

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Special weather statement, Jul 21, 3:38 PM EDT, 11 minutes before

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Special weather statement, Jul 21, 3:49 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.

Issued	Product	Office	Counties	Lasted
Jul 20, 11:42 PM EDT	Special Weather Statement	GSP	Avery, Madison, Mitchell, Yancey	93 min
Jul 21, 2:46 PM EDT	Special Weather Statement	GSP	McDowell	29 min
Jul 21, 3:12 PM EDT	Special Weather Statement	GSP	Swain	33 min
Jul 21, 3:38 PM EDT	Special Weather Statement	GSP	Davie	37 min
Jul 21, 4:12 PM EDT	Special Weather Statement	GSP	Haywood	33 min
Jul 21, 4:43 PM EDT	Special Weather Statement	GSP	Buncombe	32 min
Jul 21, 5:09 PM EDT	Special Weather Statement	GSP	Rutherford	36 min
Jul 21, 5:41 PM EDT	Special Weather Statement	GSP	Catawba	34 min
Jul 21, 5:43 PM EDT	Special Weather Statement	GSP	Union	47 min
Jul 21, 5:50 PM EDT	Severe Thunderstorm Warning	GSP	Union	21 min
Jul 21, 5:58 PM EDT	Special Weather Statement	GSP	Burke	32 min
Jul 21, 6:08 PM EDT	Special Weather Statement	GSP	Iredell	37 min
Jul 21, 6:14 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Catawba, Iredell	61 min
Jul 21, 6:19 PM EDT	Special Weather Statement	GSP	Catawba	26 min
Jul 21, 6:26 PM EDT	Areal Flood Advisory	GSP	Alexander, Burke, Caldwell, Catawba, Iredell	2 hr
Jul 21, 6:29 PM EDT	Special Weather Statement	GSP	Iredell	31 min
Jul 21, 6:36 PM EDT	Flash Flood Warning	GSP	Alexander, Burke, Caldwell, Catawba	105 min
Jul 21, 6:50 PM EDT	Special Weather Statement	GSP	Caldwell	25 min
Jul 21, 6:57 PM EDT	Areal Flood Advisory	GSP	Iredell	73 min
Jul 21, 7:11 PM EDT	Flash Flood Warning	GSP	Iredell	60 min
Jul 21, 7:16 PM EDT	Special Weather Statement	GSP	Davie	29 min
Jul 21, 7:19 PM EDT	Special Weather Statement	GSP	Davie	26 min
Jul 20, 8:30 PM EDT	Special Weather Statement	GSP	Pickens	30 min
Jul 20, 9:29 PM EDT	Special Weather Statement	GSP	Greenville	31 min
Jul 21, 10:25 AM EDT	Areal Flood Advisory	GSP	Elbert	2 hr
Jul 21, 5:40 PM EDT	Special Weather Statement	GSP	Elbert	35 min

Nearby

Special Weather Statements in South 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.