Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Greenville-Spartanburg, SC

June 14, 2012Anderson County, South Carolina

NWS Greenville-Spartanburg, SC issued this special weather statement at Jun 14, 2012, 3:43 AM EDT for Anderson County, South Carolina. It was in force for 32 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: Jun 14, 2012, 3:43 AM EDT (07:43 UTC)
Expired: Jun 14, 2012, 4:15 AM EDT
In force: 32 min
Issued by: NWS Greenville-Spartanburg, SC

County Anderson County, SC

The radar

The Greer radar (KGSP), 34 km from the middle of the area, began a volume at 07:46 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 00:00Z, 7.7 hours before the alert went out and 236 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: 872 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1691 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -10 m²/s²
0-3 km storm-relative helicity: -55 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 Jun 14, 3:37 AM EDT, 6 minutes earlier.

Area forecast discussion, Jun 14, 3:37 AM EDT, 6 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
337 AM EDT THU JUN 14 2012

.SYNOPSIS...
A WEAK COLD FRONT WILL MOVE SOUTHWARD ACROSS THE REGION TODAY.
HIGH PRESSURE IS THEN EXPECTED TO REMAIN OVER THE WESTERN CAROLINAS
AND NORTHEAST GEORGIA INTO EARLY NEXT WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
A BACK DOOR COLD FRONT CONTINUES TO PUSH TO SOUTHWEST...ACROSS THE
FORECAST AREA EARLY THIS MORNING. SCT SHOWERS AND A FEW
THUNDERSTORMS ARE DEVELOPING ALONG THE FRONT...AS WELL AS IN THE
INCREASING UPSLOPE FLOW ACROSS BLUE RIDGE AHEAD OF THE FRONT.
CONSIDERABLY DRIER AIR IS FILTERING IN BEHIND THE FRONT...THOUGH IT
WILL BE SEVERAL MORE HOURS UNTIL THE DRY AIR PUSHES ALL THE WAY
ACROSS THE FA. UNTIL THE DRY AIR MOVES IN...THE SHOWERS WILL
CONTINUE. IN FACT...THEY SHOULD INCREASE IN COVERAGE OVER THE NEXT
FEW HOURS ALONG THE EASTERN ESCARPMENT OF THE BLUE RIDGE.

LATER TODAY...CONVECTION IS EXPECTED TO REDEVELOP OVER THE SOUTHWEST
NC MTNS. HOWEVER...THE BEST LLVL CONVERGENCE AND INSTABILITY SHIFTS
IN ERN TN. SO WHILE THUNDERSTORMS SHOULD INITIATE IN THE FORECAST
AREA...THEY SHOULD DRIFT OUT OF THE FORECAST AREA BEFORE TOO
LONG...AND I/D EXPECT ANY SEVERE THREAT TO BE WEST OF THE FORECAST
AREA THIS AFTERNOON. OTHERWISE IT WILL BE A NICE DAY WITH LOWER
DEWPOINTS AND MAX TEMPS RUNNING A FEW DEGREES BELOW NORMAL. THERE
WILL BE QUITE A BIT OF ALTO-CU UNDER AN INVERSION UP AROUND 7KFT
THIS MORNING. BY THE AFTERNOON I THINK THE PIEDMONT WILL LARGELY
CLEAR OUT...THOUGH THE BROKEN CLOUD COVER WILL LIKELY LAST THROUGH
THE DAY ACROSS THE FOOTHILLS AND MOUNTAINS.

UPSLOPE FLOW WILL STRENGTHEN LATE TONIGHT. A FEW SHRA WILL BE
POSSIBLE THROUGH THE NIGHT ACROSS THE BLUE RIDGE AND LOWER CLOUD
COVER MAY DEVELOP LATE AT NIGHT IN THIS AREA AS WELL.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY/...
AS OF 310 AM THURSDAY...BOTH THE GFS AND ECMWF INDICATE THAT THE
FORECAST AREA WILL REMAIN BETWEEN A 588 DM RIDGE OVER THE CENTRAL
CONUS AND AN AMPLIFIED TROUGH OVER THE WESTERN ATLANTIC THROUGH THE
SHORT TERM. AT THE SFC...AN ELONGATED RIDGE OF HIGH PRESSURE WILL
SUPPLY STEADY NORTHEAST WINDS EAST OF THE APPALACHIANS. FORECAST
SOUNDINGS DURING FRIDAY AND SATURDAY AFTERNOONS INDICATE THAT A
SIGNIFICANT H8 TO H75 INVERSION WILL REMAIN OVER THE REGION. THE
INVERSION COMBINED WITH DEEP DRY AIR SHOULD YIELD LITTLE TO NO CAPE
ACROSS THE PIEDMONT AND FOOTHILLS...POSSIBLY RANGING NEAR 100 J/KG
ACROSS THE MTNS. I WILL FORECAST DRY CONDITIONS EAST OF THE
MTNS...WITH SLIGHT CHC ACROSS THE MTNS AND RIDGE TOP CHC ACROSS
WESTERN NC BOTH AFTERNOONS. TEMPERATURES ARE FORECAST TO RANGE
BETWEEN 2 TO 4 DEGREES BELOW NORMAL.

&&

.LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/...
AS OF 330 AM THURSDAY...SUNDAY AND MONDAY...H5 RIDGE AXIS WILL PIVOT
EAST ACROSS THE MTNS THROUGH THE PERIOD. SFC RIDGING WILL CONTINUE
ACROSS THE CWA...WITH STEADY NE LLVL FLOW. GFS FORECAST SOUNDINGS
INDICATE WIDE DEWPOINT DEPRESSION VALUES WITHIN THE BL AND A LAYER
OF MID LEVEL DRYING. CAPE VALUES SHOULD REMAIN VERY LIMITED DUE TO
THE LLVL DRY CONDITIONS AND SHALLOW MID LEVEL LAPSE RATES. BASED ON
THE LIMITED INSTABILITY AND LACK OF FORCING...I WILL KEEP CONDITIONS
DRY EAST OF THE MTNS AND ONLY INDICATE SCHC ACROSS THE MTNS.
TEMPERATURES MAY RANGE AROUND 1 TO 2 DEGREE BELOW NORMAL.

TUESDAY AND WEDNESDAY...BOTH THE GFS AND ECMWF INDICATE THAT THE
CENTER OF A 591DM 500MB LEVEL HIGH WILL BUILD OVER THE REGION. SFC
RIDGING WILL LIKELY BROADEN AND WEAKEN DURING THE PERIOD. FORECAST
SOUNDINGS CONTINUE TO FEATURE DEEP DRY AIR AND LITTLE TO NO VALUES
OF CAPE. I WILL KEEP POPS LIMITED TO A SCHC ACROSS THE WESTERN NC
MTNS ON TUESDAY...NO COVERAGE EAST. ON WEDNESDAY...CONVECTION CHC
WILL DECREASE FROM TUESDAY WITH THE MID RIDGING PEAKING OVERHEAD.
NORMAL TEMPERATURES ON TUESDAY WITH A RISE 3 TO 4 DEGREES ABOVE
NORMAL ON WEDNESDAY.

&&

.AVIATION /08Z THURSDAY THROUGH MONDAY/...
AT KCLT...THE TDWR SHOWS THAT THE BACK DOOR COLD FRONT HAS CROSSED
THE AIRFIELD. THIS WILL KEEP ANY NOCTURNAL SHOWER ACTIVITY BACK
ACROSS THE FOOTHILLS AND THE NRN UPSTATE. SCT TO BKN CLOUDS BETWEEN
4 TO 6 KFT SHOULD PERSIST THROUGH THE NIGHT. WINDS WILL BE DUE EAST
FOR A FEW HOURS...BUT THEY WILL VEER TO NE WITH TIME.

ELSEWHERE...A WEAK BACK DOOR COLD FRONT WILL SLOWLY PUSH SOUTHWEST
ACROSS THE REGION EARLY THIS MORNING. IT/S ALREADY THROUGH
KHKY...BUT IT WILL TAKE UNTIL SUNRISE BEFORE CROSSING THE UPSTATE
SITES. SCATTERED SHOWERS AND A FEW TSTMS WILL FIRE ALONG AND AHEAD
OF THE BNDRY AND VCSH HAVE BEEN ADDED OVER THE UPSTATE AND AT KAVL.
SCT TO BKN CIGS IN THE 4 TO 6 KFT RANGE WILL CONTINUE OVER THE FA
THROUGH THE NIGHT. WINDS WILL BE OUT OF THE NE MOST OF THE PERIOD.

OUTLOOK...GENERALLY DRY CONDITIONS ARE EXPECTED THROUGH MONDAY.
HOWEVER...ISOLATED AFTERNOON TSTMS WILL DEVELOP OVER THE MTNS EACH
DAY...WHICH COULD HAVE SOME AFFECT ON OPERATIONS AT KAVL.

AN EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLE SHOWING THE
PERCENTAGE OF GUIDANCE MEMBERS AGREEING WITH THE SCHEDULED ISSUANCE
CATEGORY IS AVAILABLE AT FOLLOWING LINK (USE LOWER CASE)...

WWW.WEATHER.GOV/GSP/AVIATION/TABLES.HTM

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...NED
NEAR TERM...MCAVOY
SHORT TERM...NED
LONG TERM...NED
AVIATION...MCAVOY

Hazardous weather outlook, Jun 14, 2:06 AM EDT, 1 hour 37 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
206 AM EDT THU JUN 14 2012

GAZ010-017-018-026-028-029-NCZ048-051>053-058-059-062>065-068-
507>510-SCZ001>014-019-150615-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-MADISON-SWAIN-HAYWOOD-
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-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-
206 AM EDT THU JUN 14 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 PUSH SOUTHWEST ACROSS THE WESTERN CAROLINAS
TODAY. ISOLATED SHOWERS AND ONE OR TWO THUNDERSTORMS MAY DEVELOP
ALONG AND SOUTH OF THE FRONT. A FEW THUNDERSTORM CLUSTERS MAY
DEVELOP OVER THE HIGH TERRAIN OF WESTERN NORTH CAROLINA LATER
THIS AFTERNOON. HEAVY DOWNPOURS...GUSTY WINDS...AND OCCASIONAL
CLOUD TO GROUND LIGHTNING IS POSSIBLE WITH THE STRONGER STORMS
TODAY.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ033-035>037-049-050-056-057-069>072-082-501>506-150615-
AVERY-ALEXANDER-IREDELL-DAVIE-YANCEY-MITCHELL-CATAWBA-ROWAN-LINCOLN-
GASTON-MECKLENBURG-CABARRUS-UNION NC-CALDWELL MOUNTAINS-
GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-
EASTERN MCDOWELL-
206 AM EDT THU JUN 14 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND
WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NED

In the hours before

Local storm report, Jun 13, 9:59 PM EDT, 5 hours 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
959 PM EDT WED JUN 13 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0939 PM     HAIL             2 SE NEBO               35.69N 81.91W
06/13/2012  M1.00 INCH       MCDOWELL           NC   PUBLIC

            QUARTER SIZE HAIL REPORTED NEAR NEBO.

&&

JOH

Local storm report, Jun 13, 10:31 PM EDT, 5 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1031 PM EDT WED JUN 13 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 PM     TSTM WND DMG     3 S NEBO                35.67N 81.93W
06/13/2012                   MCDOWELL           NC   911 CALL CENTER

            MULTIPLE TREES AND POWER LINES DOWN.

0945 PM     TSTM WND DMG     3 S NEBO                35.67N 81.93W
06/13/2012                   MCDOWELL           NC   911 CALL CENTER

            MULTIPLE TREES AND POWER LINES DOWN.

&&

JOH

Special weather statement, Jun 13, 10:36 PM EDT, 5 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1036 PM EDT WED JUN 13 2012

NCZ071-082-140315-
MECKLENBURG-UNION-
1036 PM EDT WED JUN 13 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MECKLENBURG AND
WESTERN UNION COUNTIES THROUGH 1115 PM EDT...

AT 1035 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR INDIAN TRAIL...OR 8 MILES NORTHWEST OF
MONROE...MOVING SOUTH AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  MINERAL SPRINGS...

SMALL HAIL...WIND GUSTS OF 30 TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3511 8052 3481 8060 3481 8063 3485 8080
      3494 8079 3498 8083 3499 8083 3517 8073

JOH

Special weather statement, Jun 13, 10:53 PM EDT, 4 hours 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1053 PM EDT WED JUN 13 2012

SCZ013-140330-
UNION-
1053 PM EDT WED JUN 13 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN UNION COUNTY
THROUGH 1130 PM EDT...

AT 1051 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTH OF CARLISLE...OR 17 MILES SOUTHEAST
OF UNION...MOVING SOUTHWEST AT 10 MPH.

SMALL HAIL...WIND GUSTS OF 30 TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3446 8156 3448 8157 3460 8155 3460 8142
      3457 8143 3457 8141 3450 8141 3449 8144
      3448 8149 3444 8154

JOH

Special weather statement, Jun 14, 3:43 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
343 AM EDT THU JUN 14 2012

SCZ010-140815-
ANDERSON-
343 AM EDT THU JUN 14 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN ANDERSON COUNTY THROUGH
415 AM EDT...

AT 338 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES WEST OF PIEDMONT...OR 12 MILES SOUTHWEST
OF DOWNTOWN GREENVILLE. THIS STORM WAS NEARLY STATIONARY.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  POWDERSVILLE AND PIEDMONT.

PENNY SIZE HAIL...WIND GUSTS OF 30 TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE. SEEK HIGHER GROUND
IF THREATENED BY FLOOD WATERS.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 3472 8270 3481 8252 3481 8248 3476 8245
      3475 8246 3471 8246 3468 8247 3458 8258

MCAVOY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 9:27 PM EDT	Special Weather Statement	GSP	McDowell	33 min
Jun 13, 9:36 PM EDT	Severe Thunderstorm Warning	GSP	McDowell	54 min
Jun 13, 10:20 PM EDT	Areal Flood Advisory	GSP	McDowell	60 min
Jun 13, 10:36 PM EDT	Special Weather Statement	GSP	Union	39 min
Jun 14, 6:47 PM EDT	Special Weather Statement	GSP	Swain	43 min
Jun 14, 7:04 PM EDT	Special Weather Statement	GSP	Madison	26 min
Jun 14, 7:11 PM EDT	Special Weather Statement	GSP	Macon	34 min
Jun 14, 7:34 PM EDT	Special Weather Statement	GSP	Graham	26 min
Jun 14, 7:56 PM EDT	Special Weather Statement	GSP	Graham	34 min
Jun 13, 9:29 PM EDT	Special Weather Statement	GSP	Chester	31 min
Jun 13, 10:53 PM EDT	Special Weather Statement	GSP	Union	37 min
Jun 13, 10:58 PM EDT	Severe Thunderstorm Warning	GSP	Union	32 min
Jun 14, 4:16 AM EDT	Special Weather Statement	GSP	Greenville	29 min
Jun 14, 4:48 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville	57 min
Jun 14, 5:16 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville	74 min
Jun 14, 5:31 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Pickens	61 min
Jun 14, 5:41 AM EDT	Areal Flood Advisory	GSP	Greenville	79 min
Jun 14, 6:01 AM EDT	Severe Thunderstorm Warning	GSP	Anderson, Oconee	74 min
Jun 14, 6:29 AM EDT	Severe Thunderstorm Warning	GSP	Anderson	56 min
Jun 14, 6:58 AM EDT	Severe Thunderstorm Warning	GSP	Anderson	77 min
Jun 14, 8:00 AM EDT	Areal Flood Advisory	GSP	Greenville	2 hr
Jun 14, 7:33 AM EDT	Flash Flood Warning	GSP	Stephens	3 hr
Jun 14, 7:44 AM EDT	Special Weather Statement	GSP	Elbert	46 min
Jun 14, 8:36 AM EDT	Special Weather Statement	GSP	Elbert	24 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.