Alert archive / South Carolina / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 262, NWS Greenville-Spartanburg, SC

June 18, 2009Spartanburg County, Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 18, 2009, 5:57 PM EDT for Spartanburg County, Union 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 counties it named.

The facts

Issued: Jun 18, 2009, 5:57 PM EDT (21:57 UTC)
Expired: Jun 18, 2009, 6:29 PM EDT
In force: 32 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 39 km from the middle of the area, began a volume at 21:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 18, 3:13 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.0 hours before the alert went out and 223 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: 931 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 1.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 18, 5:31 PM EDT, 26 minutes earlier.

Area forecast discussion, Jun 18, 5:31 PM EDT, 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
531 PM EDT THU JUN 18 2009

.SYNOPSIS...
HIGH PRESSURE WILL BUILDS OVER THE AREA FROM THE SOUTH ON
FRIDAY...THEN A WEAK COLD FRONT WILL MOVE ACROSS OUR AREA ON
SATURDAY. WEAK HIGH PRESSURE WILL BUILD OVER THE REGION NEXT WEEK.

&&

.NEAR TERM /THROUGH FRIDAY/...
THE FORECAST HAS BEEN UPDATED TO REMOVE THE NC MTNS FROM THE SEVERE
TSTM WATCHES THIS EVENING. WW 461 IS SET TO EXPIRE AT 6 PM ACROSS
THE WRN UPSTATE AND NE GA. IT APPEARS THAT ONGOING SEVERE
CONVECTION WILL BE CLEARING THE SRN TIER AROUND THAT TIME. SOME
ADDITIONAL CLEARING OF WW 466 ACROSS WRN NC IS LIKELY NEAR THE TOP
OF THE HOUR. NO ADDITIONAL MCS ACTIVITY IS INDICATED
UPSTREAM...AND TSTMS SHOULD RAPIDLY END AFTER THE MCS
PASSES...WITH JUST A LINGERING RAIN AREA THROUGH THE EVENING
BEFORE ENDING.

STRONG UPPER RIDGE BUILDS INTO THE AREA FRIDAY. THIS PUSHES THE
STORM TRACK TO OUR NORTH. THE MODELS STILL SHOW QUITE A BIT OF CAPE
OVER THE AREA WITH VERY WARM TEMPS AND ONLY SLIGHTLY LOWER DEW
POINTS. ONE WOULD THINK THAT INSTABILITY SHOULD BE MUCH LOWER DUE TO
THE BUILDING RIDGE. HOWEVER...MDL SOUNDINGS DO NOT SHOW AN EXPECTED
MID LEVEL SUBSIDENCE INVERSION. THAT SAID...DO NOT THINK THERE WILL
BE MUCH OF A TRIGGER WITH THE STORM TRACK MOVING NORTH. WILL LIMIT
POP TO SLIGHT CHC FOR THE NRN MTNS AND I-40 CORRIDOR. GUIDANCE HIGHS
ARE VERY WARM AS EXPECTED WITH THE INCREASING HEIGHTS AND
THICKNESSES. HOWEVER...MDLS HAVE BEEN TOO WARM RECENTLY.
ALSO...GROUND IS QUITE MOIST WITH THE RECENT RAINFALL. WITH SOME OF
THE HEATING GOING TO EVAPORATING THE MOISTURE...WILL UNDERCUT MOS
SLIGHTLY AND KEEP TEMPS IN THE LOW TO MID 90S.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
AS OF 205 PM EDT THU...THE MAIN SHORT TERM CONCERN WILL BE THE
HEAT...AS THE UPPER RIDGE MAINTAINS CONTROL OVER THE SOUTHEAST.
BROAD-SCALE SUBSIDENCE COMBINED WITH DOWNSLOPE FLOW WILL ALLOW TEMPS
TO SOAR TO NEAR THE CENTURY MARK ACROSS PORTIONS OF THE PIEDMONT SAT
AFTERNOON. DESPITE THE WARMING MID-LEVEL TEMPS...CONVECTION CANNOT
BE RULED OUT...PARTICULARLY ACROSS THE NORTHERN ZONES LATE SAT
AFTERNOON INTO THE EVENING. THIS AREA WILL REMAIN CLOSE TO THE BAND
OF STRONGER WESTERLIES...AND NEAR THE TRACK OF ANY MCS ORIGINATING
FROM THE OHIO VALLEY. CHANCE POPS WILL BE CARRIED TO ACCOUNT FOR
THIS.

ALTHOUGH THE RIDGE BEGINS A RETREAT ON SUNDAY...MODEL GUIDANCE
MAINTAINS ANY SIGNIFICANT MID-LEVEL SW TROUGH ACTIVITY WELL TO THE
NORTH OF THE AREA. MEANWHILE...FORECAST SOUNDINGS ARE RATHER
UNIMPRESSIVE. THEREFORE...OTHER THAN A SLIVER OF SLIGHT/LOW CHANCE
POPS ALONG THE TENN BORDER (ACCOUNTING FOR LOW LEVEL NORTHWEST
FLOW)...SUNDAY IS EXPECTED TO BE DRY.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
AS OF 220 PM EDT THU...THE MEDIUM RANGE MODELS AGREE THAT AN UPPER
LOW WILL FORM EAST OF THE MID-ATLANTIC COAST EARLY NEXT WEEK...WITH
THE RIDGE RETROGRADING TO THE LOWER MISS VALLEY. THIS LEAVES THE
CAROLINAS AND NORTH GEORGIA IN RELATIVELY DEEP/DRY NORTHERLY FLOW.
ALTHOUGH ISOLATED/WIDELY SCT DIURNAL CONVECTION CANNOT BE COMPLETELY
RULED OUT...ESP OVER THE MTNS...IT APPEARS THAT THIS WILL RESULT IN
A DRIER AND SLIGHTLY COOLER PATTERN.

&&

.AVIATION /22Z THURSDAY THROUGH TUESDAY/...
MCS DROPPING TOWARD THE AREA SHOULD REMAIN IN TACT AND BRING A LINE
OF TSRA...SOME SEVERE...ACROSS THE CWFA LATE THIS AFTERNOON AND
EVENING. MADE SOME MINOR CHANGES TO VCTS WORDING TO TAKE INTO
ACCOUNT CURRENT EXPECTED TIMING. WEST TO SOUTHWEST...NNW AT KAVL...
WINDS WILL CONTINUE AHEAD OF THIS SYSTEM. WILL LIKELY BE AN INCREASE
IN WINDS AND WIND SHIFT WITH THE CONVECTION...BUT WILL HAVE TO AMD
AS IT MOVES IN TO MAKE SURE TIMING IS ACCURATE.

EXPECT RAPIDLY IMPROVING CONDITIONS BEHIND THE SYSTEM THIS EVENING.
WINDS SHOULD BECOME LIGHT AND VARIABLE. GUIDANCE ALL SHOWS VFR CIGS
WITH ONLY POSSIBLE MVFR FOG OVERNIGHT. THEREFORE...HAVE KEPT ALL
AREAS VFR FOR NOW...BUT LOWER CONDITIONS ARE POSSIBLE.

UPPER RIDGE BUILDS IN FRIDAY...MOVING STORM TRACK TO OUR NORTH. KHKY
HAS THE BEST CHC OF SEEING ANY CONVECTION...BUT CHC LOW FOR NOW. ANY
CU DEVELOPMENT WILL ALSO BE LATE IN THE DAY. LIGHT WEST TO NORTHWEST
WINDS DEVELOP WITH MIXING.

OUTLOOK...DRIER HIGH PRESSURE BUILDS INTO THE REGION THU NIGHT
THROUGH FRIDAY. A COLD FRONT WILL BRING A CHANCE OF TSTMS SATURDAY
WITH DRY CONDITIONS TO FOLLOW AGAIN SUNDAY AND MONDAY.

&&

.CLIMATE...
RECORD HIGHS FOR FRIDAY JUNE 19TH:

ASHEVILLE (KAVL): 92 SET IN 1933
GREENVILLE-SPARTANBURG AREA (KGSP): 98 SET IN 1944
CHARLOTTE METRO AREA (KCLT): 102 SET IN 1944

&&

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

&&

SYNOPSIS...JDL
NEAR TERM...HG/RWH
SHORT TERM...JDL
LONG TERM...JDL
AVIATION...RWH
CLIMATE...ARK

Hazardous weather outlook, Jun 18, 5:34 PM EDT, 23 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
534 PM EDT THU JUN 18 2009

GAZ010-017-018-026-028-029-SCZ001-002-004-005-010-011-192145-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREATER OCONEE-GREATER PICKENS-ANDERSON-ABBEVILLE-
534 PM EDT THU JUN 18 2009

...SEVERE THUNDERSTORM WATCH 461 IN EFFECT UNTIL 6 PM EDT THIS
EVENING...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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.

NCZ035>037-056-057-068>072-082-501>510-SCZ003-006>009-012>014-019-
192145-
ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-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-
GREENVILLE MOUNTAINS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
LAURENS-UNION SC-CHESTER-GREENWOOD-
534 PM EDT THU JUN 18 2009

...SEVERE THUNDERSTORM WATCH 466 IN EFFECT UNTIL 11 PM EDT THIS
EVENING...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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.

NCZ033-048>053-058-059-062>065-192145-
AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
534 PM EDT THU JUN 18 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

HG

In the hours before

Local storm report, Jun 18, 5:22 PM EDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
522 PM EDT THU JUN 18 2009

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

0355 PM     TSTM WND DMG     MARSHALL                35.80N 82.68W
06/18/2009                   MADISON            NC   COUNTY OFFICIAL

            MULTIPLE TREES DOWN IN MARSHALL.

&&

JPT

Local storm report, Jun 18, 5:31 PM EDT, 26 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
531 PM EDT THU JUN 18 2009

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

0515 PM     HAIL             7 S FOREST CITY         35.23N 81.87W
06/18/2009  E1.75 INCH       RUTHERFORD         NC   TRAINED SPOTTER

            GOLF BALL HAIL 7 MILES SOUTH OF FOREST CITY.

&&

JPT

Local storm report, Jun 18, 5:36 PM EDT, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
536 PM EDT THU JUN 18 2009

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

0442 PM     TSTM WND DMG     PELZER                  34.64N 82.46W
06/18/2009                   ANDERSON           SC   UNKNOWN

            LARGE BRANCHES BROKEN.

&&

JPT

Local storm report, Jun 18, 5:38 PM EDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
538 PM EDT THU JUN 18 2009

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

0449 PM     HAIL             PELZER                  34.64N 82.46W
06/18/2009  E0.75 INCH       ANDERSON           SC   PUBLIC

            PENNY HAIL IN PELZER.

&&

JPT

Local storm report, Jun 18, 5:41 PM EDT, 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
541 PM EDT THU JUN 18 2009

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

0530 PM     TSTM WND DMG     UNION                   34.72N 81.62W
06/18/2009                   UNION              SC   TRAINED SPOTTER

            MULTIPLE TREES DOWN IN UNION CITY.

&&

JPT

Local storm report, Jun 18, 5:43 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
543 PM EDT THU JUN 18 2009

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

0453 PM     HAIL             GREENVILLE              34.84N 82.37W
06/18/2009  E0.50 INCH       GREENVILLE         SC   PUBLIC

            0.5 INCH HAIL IN GREENVILLE.

&&

JPT

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 8:55 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Swain	65 min
Jun 18, 3:16 PM EDT	Severe Thunderstorm Warning	GSP	Graham, Swain	74 min
Jun 18, 3:27 PM EDT	Severe Thunderstorm Warning	GSP	Madison	53 min
Jun 18, 3:38 PM EDT	Severe Thunderstorm Warning	GSP	Avery, Mitchell, Yancey	51 min
Jun 18, 3:40 PM EDT	Severe Thunderstorm Warning	GSP	Haywood	52 min
Jun 18, 3:52 PM EDT	Severe Thunderstorm Warning	GSP	Jackson, Macon	51 min
Jun 18, 3:54 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Haywood	47 min
Jun 18, 4:02 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Caldwell, McDowell	58 min
Jun 18, 4:17 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe, Henderson, McDowell	58 min
Jun 18, 4:36 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Polk, Rutherford	33 min
Jun 18, 4:56 PM EDT	Severe Thunderstorm Warning	GSP	Cleveland, Polk, Rutherford	64 min
Jun 18, 5:03 PM EDT	Severe Thunderstorm Warning	GSP	Gaston, Mecklenburg	57 min
Jun 18, 5:29 PM EDT	Severe Thunderstorm Warning	GSP	Union	63 min
Jun 17, 9:06 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	39 min
Jun 17, 9:17 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	58 min
Jun 17, 9:54 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	66 min
Jun 17, 9:58 PM EDT	Severe Thunderstorm Warning	GSP	Pickens	62 min
Jun 17, 10:50 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	70 min
Jun 17, 10:57 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	78 min
Jun 18, 12:27 AM EDT	Areal Flood Advisory	GSP	Abbeville	63 min
Jun 18, 3:14 AM EDT	Flash Flood Warning	GSP	Chester	3 hr
Jun 18, 3:17 AM EDT	Severe Thunderstorm Warning	GSP	Chester	58 min
Jun 18, 3:49 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville, Pickens	56 min
Jun 18, 4:08 PM EDT	Severe Thunderstorm Warning	GSP	Pickens	52 min
Jun 18, 4:30 PM EDT	Severe Thunderstorm Warning	GSP	Anderson	60 min
Jun 18, 4:46 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	39 min
Jun 18, 5:05 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenwood, Laurens	70 min
Jun 18, 5:26 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, Chester, Spartanburg, Union, York	64 min
Jun 18, 5:44 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Greenwood, Laurens	46 min
Jun 18, 6:01 PM EDT	Tornado Warning	GSP	Cherokee, Chester, Union, York	18 min
Jun 17, 10:41 PM EDT	Severe Thunderstorm Warning	GSP	Rabun	49 min
Jun 17, 10:44 PM EDT	Severe Thunderstorm Warning	GSP	Hart	46 min
Jun 17, 11:06 PM EDT	Severe Thunderstorm Warning	GSP	Franklin	54 min
Jun 17, 11:29 PM EDT	Severe Thunderstorm Warning	GSP	Elbert, Hart	76 min
Jun 17, 11:58 PM EDT	Severe Thunderstorm Warning	GSP	Franklin, Habersham, Stephens	47 min
Jun 18, 4:34 PM EDT	Severe Thunderstorm Warning	GSP	Franklin, Hart, Stephens	44 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2009 Every severe thunderstorm warning in 2009

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.