Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 95, NWS Greenville-Spartanburg, SC

April 5, 2012Chester County, Union County, York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 5, 2012, 4:44 PM EDT for Chester County, Union County, York County, South Carolina. It was in force for 76 min. 3 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
Apr 5, 2012, 4:44 PM EDT (20:44 UTC)
Expired
Apr 5, 2012, 6:00 PM EDT
In force
76 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Chester County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 70 km from the middle of the area, began a volume at 20:47 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
Apr 5, 4:44 PM EDTHAIL 1Union, SC
Apr 5, 5:00 PM EDTHAIL 1Lockhart, SC
Apr 5, 5:12 PM EDTHAIL 1.75Union, SC

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this severe thunderstorm warning; the first came 0 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

IssuedProductOfficeLasted
Apr 5, 1:47 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 8.7 hours before the alert went out and 214 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, Greensboro/Hi Pt, NC at 12:00Z on 2012-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2012-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
192 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.

849 
WUUS52 KGSP 052044
SVRGSP
SCC023-087-091-052200-
/O.NEW.KGSP.SV.W.0095.120405T2044Z-120405T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
444 PM EDT THU APR 5 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CHESTER COUNTY IN UPSTATE SOUTH CAROLINA...
  UNION COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTHWESTERN YORK COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 600 PM EDT

* AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
  UNION...AND MOVING EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  LOCKHART.
  LOWRYS.
  CHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3453 8165 3456 8168 3455 8170 3460 8179
      3488 8158 3487 8149 3484 8146 3490 8147
      3497 8108 3456 8109 3457 8142 3450 8142
      3448 8155
TIME...MOT...LOC 2044Z 277DEG 17KT 3475 8154

$$

NED
3 follow-up statements
332 
WWUS52 KGSP 052116
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
516 PM EDT THU APR 5 2012

SCC023-087-091-052200-
/O.CON.KGSP.SV.W.0095.000000T0000Z-120405T2200Z/
CHESTER SC-YORK SC-UNION SC-
516 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR UNION...
SOUTHWESTERN YORK AND WESTERN CHESTER COUNTIES IN UPSTATE SOUTH
CAROLINA UNTIL 600 PM EDT...

AT 515 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL...
AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
UNION...MOVING EAST AT 30 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  LOCKHART.
  LOWRYS AND CHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3453 8165 3456 8168 3455 8170 3460 8179
      3488 8158 3487 8149 3484 8146 3490 8147
      3497 8108 3456 8109 3457 8142 3450 8142
      3448 8155
TIME...MOT...LOC 2116Z 255DEG 25KT 3469 8157

$$

NED
106 
WWUS52 KGSP 052141
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
541 PM EDT THU APR 5 2012

SCC091-052149-
/O.CAN.KGSP.SV.W.0095.000000T0000Z-120405T2200Z/
YORK SC-
541 PM EDT THU APR 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN YORK COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THIS AREA.

LAT...LON 3453 8165 3456 8168 3456 8171 3460 8179
      3483 8154 3481 8109 3456 8109 3457 8142
      3450 8142 3448 8155
TIME...MOT...LOC 2139Z 260DEG 16KT 3471 8144

$$

SCC023-087-052200-
/O.CON.KGSP.SV.W.0095.000000T0000Z-120405T2200Z/
CHESTER SC-UNION SC-
541 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
UNION AND WESTERN CHESTER COUNTIES IN UPSTATE SOUTH CAROLINA UNTIL
600 PM EDT...

AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES
SOUTH OF LOCKHART...OR 9 MILES EAST OF UNION...MOVING EAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...  
   CHESTER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT DAMAGING WINDS...HAIL...OR FLOODING THROUGH OUR AUTOMATED
REPORTING SYSTEM...CALL TOLL FREE...1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3453 8165 3456 8168 3456 8171 3460 8179
      3483 8154 3481 8109 3456 8109 3457 8142
      3450 8142 3448 8155
TIME...MOT...LOC 2139Z 260DEG 16KT 3471 8144

$$

NED
202 
WWUS52 KGSP 052158
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
558 PM EDT THU APR 5 2012

SCC023-087-052208-
/O.EXP.KGSP.SV.W.0095.000000T0000Z-120405T2200Z/
CHESTER SC-UNION SC-
558 PM EDT THU APR 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN UNION AND WESTERN
CHESTER COUNTIES IN UPSTATE SOUTH CAROLINA WILL EXPIRE AT 600 PM
EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LEVELS.

LAT...LON 3453 8165 3456 8168 3456 8171 3460 8179
      3483 8154 3481 8109 3456 8109 3457 8142
      3450 8142 3448 8155
TIME...MOT...LOC 2158Z 260DEG 16KT 3472 8134

$$
07

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 Apr 5, 4:35 PM EDT, 9 minutes earlier.

Area forecast discussion, Apr 5, 4:35 PM EDT, 9 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
435 PM EDT THU APR 5 2012

.SYNOPSIS...
AN UPPER LOW WILL MERGE WITH THE DEPARTING TROUGH AS IT MOVES OFF
THE EAST COAST ON FRIDAY. COOL AND DRY HIGH PRESSURE WILL THEN BUILD
OVER OUR REGION INTO SATURDAY AND WEAKEN.  AN UPPER TROUGH IS
FORECAST TO SET UP OVER THE EAST NEXT WEEK WHICH COULD LEAD TO
COOLER THAN NORMAL TEMPERATURES.

&&

.NEAR TERM /THROUGH FRIDAY/...
AT 430 PM EDT... STRONGEST CONVECTIVE STORMS MOVING SLOWLY
NORTHEAST FROM SOUTHERN NC MOUNTAINS SOUTHEAST INTO SC PIEDMONT.
STORMS WILL CONTINUE THAT MOTION IN THE NEAR TERM... BUT MORE
STABLE AIR JUST TO THE EAST WILL LIKELY PREVENT EXPANSION OF
DAMAGING WIND AND HAIL INTO OUR EASTERN ZONES. RAIN WILL GRADUALLY
SPREAD INTO THAT AREA... HOWEVER. RAIN WILL PERSIST WESTERN
PORTION OF NC PIEDMONT... FOOTHILLS... AND ALONG BLUE RIDGE
ESCARPMENT. WILL MONITOR THAT AREA FOR POSSIBILITY OF EXCESSIVE
RAINFALL LATER AS PERSISTENT EAST/WEST AREA OF PRECIPITATION
DEVELOPS JUST NORTH OF SURFACE LOW. DRIER AIR MOVING INTO
SOUTHWESTERN ZONES WILL RESULT IN DIMINISHING SHOWER CHANCE FOR A
WHILE... BUT BAND OF CONVECTIVE RAINFALL ASSOCIATED WITH UPPER
LEVEL SYSTEM WILL SWING INTO AREA LATER THIS EVENING OR EARLY
TONIGHT.

PREVIOUS DISCUSSION...
CONVECTION DEVELOPED NEARLY ON SCHEDULE...BUT MAYBE A TAD EARLIER
THAN EXPECTED. WATCH ALREADY IN PLACE ACROSS MOST OF THE WRN CWFA
LOOKS WELL PLACED. STRONG INSOLATION OCCURRED IN THIS AREA WITH
POOLING DEW POINTS ALONG THE STALLED FRONT. THIS LEAD TO MODERATE
INSTABILITY ACROSS THIS AREA AS EXPECTED. VERY HIGH DCAPE VALUES AND
WET BULB ZERO LEVELS ARE IN PLACE AS WELL DUE TO THE VERY DRY MID
LEVELS SEEN ON THE 12Z FFC RAOB. THE WATCH INCLUDES MUCH OF THE CLT
METRO AREA EVEN THO THEY ARE NORTH OF THE FRONT. THE SFC BASED AND
MIXED LAYER CAPE IS LOW OVER THAT AREA...BUT MODERATE MUCAPE IS
ANALYZED DUE TO STEEP LAPSE RATES. THEY ARE ALSO ON THE EDGE OF THE
HIGHER DCAPE VALUES AS WELL. THE CONVECTION DEVELOPING OVER THE MTNS
AND FOOTHILLS SHUD SLIDE EAST ACROSS THE PIEDMONT EVEN WITH LESS
THAN IDEAL CONDITIONS. EXPECT WIDESPREAD TSRA TO DEVELOP AND TREK
EASTWARD OVER NE GA AND THE UPSTATE AS WELL THIS AFTERNOON AND EARLY
EVENING.

THE PRECIP SHUD BECOME LESS DEEPLY CONVECTIVE LATE THIS EVENING AND
OVERNIGHT AS INSTABILITY WEAKENS AHEAD OF THE APPROACHING UPPER LOW.
HAVE KEPT THE CHARACTER OF PRECIP AS SHRA FOR SIMPLICITY ALTHOUGH IT
MAY BE MORE STRATIFORM...ESPECIALLY ACROSS THE NORTHERN CWFA.
FORCING WILL BE QUITE STRONG AS QG COUPLET MOVES ACROSS THE AREA
AHEAD OF THE UPPER LOW. THIS WILL BE COMBINED WITH GOOD LOW LEVEL
CONVERGENCE AS A SFC LOW FORMS ALONG THE FRONT AND AN H85 LOW MOVES
IN AS WELL. UPPER DIVERGENCE INCREASES AHEAD OF A JET MAX MOVING IN
AHEAD OF THE UPPER LOW. ALL THIS SHOULD COMBINE WITH DEEP MOISTURE
FOR A PERIOD OF WIDESPREAD SHRA OR RA LATE THIS EVENING OR
OVERNIGHT. THE PRECIP BEGINS TO DIMINISH FROM NORTH TO SOUTH AND
WEST TO EAST AS THE FORCING MOVES OUT OF THE AREA. CANNOT RULE OUT
LOCALLY HEAVY RAINFALL...ESPECIALLY OVER AREAS WHERE TSRA MOVE THRU
THIS AFTERNOON AND RAINFALL LINGERS THRU THE EVENING.

ANY LINGERING PRECIP QUICKLY TAPERS OFF FRI MORNING AS THE SYSTEM
MOVES EAST OF THE AREA. CLOUDS WILL SCATTER OUT FOR MOST AREAS
DURING THE AFTERNOON....BUT COULD LINGER ACROSS THE BLUE RIDGE THRU
THE DAY IN WEAK UPSLOPE FLOW. HIGHS WILL BE QUITE A BIT COOLER AS
THICKNESSES FALL IN THE COOLER AND DRIER AIR MASS MOVING IN...ENDING
UP AS MUCH AS 5 DEGREES BELOW NORMAL.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
AS OF 2 PM EDT THURSDAY...THE SHORT TERM FCST PICKS UP AT 00Z ON
SATURDAY WITH THE STEEP UPPER RIDGE AXIS OVER THE CENTRAL CONUS AND
A BROAD UPPER TROF LINGERING OVER NEW ENGLAND. AS THE UPPER RIDGE
DRIFTS TOWARDS THE CAROLINAS IT WILL DEAMPLIFY SO THAT BY THE END OF
THE PERIOD LATE SUNDAY WE ARE UNDER NEARLY ZONAL NWLY H5 FLOW.

ON SATURDAY...DRY AND COOL HIGH PRESSURE CENTERED OVER THE GREAT
LAKES WILL BRING US THE COOLEST TEMPERATURES WE HAVE HAD IN A WHILE.
LOWS EARLY SATURDAY MORNING WILL LIKELY DROP DOWN INTO THE MID TO
UPPER 30S ACROSS MUCH OF WESTERN NC WITH LOWER 30S IN SOME OF THE
NORTHERN MOUNTAINS. WINDS WILL ALSO BE LIGHT...SO THERE IS GOOD
POTENTIAL FOR PATCHY FROST. RH VALUES DROP BELOW 30% FOR ABOUT 4 TO
6 HOURS DURING THE AFTERNOON/EARLY EVENING PERIOD...HOWEVER WEAKER
WINDS SHOULD SUPPRESS FIRE DANGER POTENTIAL. ON SUNDAY...SOME SORT OF
WEAK BNDY WILL MOVE THRU THE CWFA DURING THE AFTERNOON...BUT THIS
WILL HAVE LITTLE IMPACT ON THE SENSIBLE WX. TEMPS WILL WARM BACK
INTO THE LOW TO MID 70S AS THICKNESSES INCREASE.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
AS OF 2 PM THURSDAY...NO MAJOR CHANGES WERE MADE TO THE MEDIUM RANGE
FCST WITH THINGS STAYING IN LINE WITH HPC GUIDANCE. REFER TO
PREVIOUS DISCUSSION BELOW.

PREVIOUS DISCUSSION...
AS OF 130 AM THURSDAY...ON SUNDAY THE WEAK UPPER RIDGE WILL BE
BREAKING DOWN.  WITH PLENTY OF SUNSHINE AND THICKNESS VALUES ON THE
WARM SIDE...EXPECT HIGHS IN THE 70S ACROSS THE FORECAST AREA.
STARTING THE WEEK...EXPECT AN UPPER TROUGH TO DEVELOP OVER THE
EAST.  BOTH THE GFS AND ECMWF HAVE A CLOSED OFF LOW OVER THE GREAT
LAKES AT 12Z MONDAY AS IT SLIDES EAST OR SOUTHEAST.  THE ECMWF HAS A
DEEPER TROUGH AS WE PROGRESS INTO THE MID WEEK.  LOOKS LIKE THE BEST
CONSENSUS OF SHOWERS OVER THE NC MOUNTAINS WILL BE TUESDAY
AFTERNOON.  A GOOD PRESSURE GRADIENT DEVELOPS MONDAY AFTERNOON AND
GRADUALLY DECREASES ON TUESDAY AND I HAVE INCREASED THE WIND IN THIS
PERIOD AS THIS GRADIENT CERTAINLY SUPPORTS IT.  THE ECMWF HAS AN
UPPER CLOSED OFF LOW OVER THE CAROLINAS AND VIRGINIA WEDNESDAY NIGHT
AS THE GFS HAS THE TROUGH TRYING TO PULL OFF THE EAST COAST BY THAT
TIME.  TEMPERATURES SHOULD BE NEAR NORMAL ON MONDAY...BUT AS THE
TROFINESS SETS UP FOR DAYS 6 AND 7 THE TEMPERATURES WILL LIKELY BE A
FEW DEGREES BELOW NORMAL BY THAT TIME.  LOWS IN THE 30S FOR THE NC
MOUNTAINS IN MID WEEK.

&&

.AVIATION /21Z THURSDAY THROUGH TUESDAY/...
AT KCLT...NE WINDS...OCNL DUE E...WILL CONTINUE THRU THE PERIOD AS
THE AIR FIELD REMAINS NORTH OF THE SFC FNT. CONVECTION LOOKS MORE
LIKELY EVEN WITH THE COOLER DRIER AIR IN PLACE AS ELEVATED
INSTABILITY REMAINS QUITE HIGH. DID NOT INCLUDE IN THE TAF ATTM...
BUT WILL LIKELY NEED TO AMD AS CELLS DEVELOP AND MOVE TOWARD THE
SITE. BEST CHC WILL BE LATE AFTERNOON. AS THE SCENARIO TRANSITIONS
TO MORE OF A RAIN EVENT THIS EVENING...VSBY AND CIGS WILL BEGIN TO
LOWER...POSSIBLY TO IFR. VSBY IMPROVES TOWARD DAYBREAK AS RAIN MOVES
OUT...BUT AT LEAST MVFR CIGS WILL CONTINUE THRU NOON BEFORE CLOUDS
BEGIN TO SCATTER OUT AND LIFT. WINDS COULD BE GUSTY AT ANY TIME...
BUT MOST LIKELY FROM DAYBREAK THRU NOON WHEN BEST MIXING OCCURS.

ELSEWHERE...KHKY WILL BE SIMILAR TO KCLT THRU THE PERIOD. THE WRN
SITES HAVE CONVECTION NEARBY OR ONGOING...SO TS ALREADY IN TAFS.
THAT SAID...A SIMILAR TREND WILL DEVELOP AS THE FRONT SAGS SOUTHWARD
THIS EVENING AND SCENARIO TRANSITIONS TO MORE OF A RAIN EVENT. MVFR
VSBY AND CIGS...POSSIBLY IFR CIGS...EXPECTED OVERNIGHT AS WELL WITH
ONLY SLOWLY IMPROVING CONDITIONS FRI MORN. WINDS BECOME NE WITH TIME
AND DEVELOP GUSTS TOWARD MORNING.

OUTLOOK...A DRY HIGH PRESSURE SYSTEM WILL BUILD IN BY FRI AFTERNOON
AND DOMINATE THE WEATHER THROUGH THE WEEKEND.

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...JPT
NEAR TERM...LGL/RWH
SHORT TERM...JPT
LONG TERM...JPT
AVIATION...LGL/RWH
Hazardous weather outlook, Apr 5, 3:37 PM EDT, 1 hour 7 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
337 PM EDT THU APR 5 2012

GAZ010-017-018-026-028-029-NCZ048-051>053-058-059-062>065-068-070-
071-082-507>510-SCZ001>014-019-061945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-MADISON-SWAIN-HAYWOOD-
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-GASTON-MECKLENBURG-UNION NC-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-
337 PM EDT THU APR 5 2012

...SEVERE THUNDERSTORM WATCH 146 IN EFFECT UNTIL 9 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND 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.

A COLD FRONT WILL STALL OVER THE UPSTATE OF SOUTH CAROLINA AND THE
NORTH CAROLINA MOUNTAINS THIS AFTERNOON. WIDESPREAD SHOWER AND
THUNDERSTORM ACTIVITY WILL DEVELOP ALONG THE FRONT. SOME OF THESE
THUNDERSTORMS ARE EXPECTED TO BECOME SEVERE AND PRODUCE DAMAGING
WINDS AND LARGE HAIL. AN ISOLATED TORNADO IS POSSIBLE...ESPECIALLY
IN THE VICINITY OF THE FRONT. AREAS THAT STAND THE BEST CHANCE OF
SEEING SEVERE STORMS WILL GENERALLY BE ALONG AND SOUTH AND WEST OF
A LINE FROM ASHEVILLE TO SPARTANBURG AND CHESTER.

THUNDERSTORMS MAY REPEATEDLY AFFECT THE SAME LOCATIONS TODAY. IF
THIS OCCURS...LOCALIZED VERY HEAVY RAIN IS POSSIBLE WHICH COULD
CAUSE FLASH FLOODING. URBAN AREAS WILL BE PARTICULARLY
SUSCEPTIBLE TO FLASH FLOODING THROUGH THE EVENING.

.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.

NCZ033-035>037-049-050-056-057-069-072-501>506-061945-
AVERY-ALEXANDER-IREDELL-DAVIE-YANCEY-MITCHELL-CATAWBA-ROWAN-LINCOLN-
CABARRUS-CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-
GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
337 PM EDT THU APR 5 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A COLD FRONT WILL STALL JUST SOUTH OF THE REGION THIS AFTERNOON.
A FEW THUNDERSTORMS WILL FORM NORTH OF THE FRONT...PARTICULARLY
ACROSS THE MOUNTAINS AND FOOTHILLS. LOCALLY HEAVY RAIN AND CLOUD
TO GROUND LIGHTNING WILL BE THE MAIN THREAT FROM THUNDERSTORMS
THROUGH THE EVENING.

.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.

JPT

In the hours before

Local storm report, Apr 5, 3:49 PM EDT, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
349 PM EDT THU APR 05 2012

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

0325 PM     HAIL             5 SE TIGERVILLE         35.02N 82.32W
04/05/2012  E0.75 INCH       GREENVILLE         SC   911 CALL CENTER

            BROOKE ANN COURT...LAKE ROBINSON.

&&

CSH
Local storm report, Apr 5, 3:50 PM EDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
350 PM EDT THU APR 05 2012

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

0325 PM     HAIL             3 SSW GOWENSVILLE       35.07N 82.24W
04/05/2012  E1.00 INCH       GREENVILLE         SC   AMATEUR RADIO

            COCKRELL RD

&&

CSH
Special weather statement, Apr 5, 4:06 PM EDT, 38 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
406 PM EDT THU APR 5 2012

NCZ052-053-065-052045-
BUNCOMBE-HAYWOOD-HENDERSON-
406 PM EDT THU APR 5 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN HENDERSON...
SOUTHEASTERN HAYWOOD AND SOUTHWESTERN BUNCOMBE COUNTIES THROUGH 445
PM EDT...

AT 402 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHEAST OF SUNBURST...OR 6 MILES EAST
OF WAYNESVILLE...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO I-26 AT
  I-40...WAYNESVILLE...SUNBURST...LAKE JUNALUSKA...CRUSO...CLYDE...
  CANTON...CANDLER...BENT CREEK AND AVERY CREEK.

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

LAT...LON 3543 8251 3539 8271 3542 8275 3541 8274
      3538 8279 3535 8296 3552 8303 3566 8260

07
Local storm report, Apr 5, 4:08 PM EDT, 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
408 PM EDT THU APR 05 2012

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

0350 PM     HAIL             3 W INMAN               35.06N 82.15W
04/05/2012  E1.25 INCH       SPARTANBURG        SC   PUBLIC

&&

LG
Local storm report, Apr 5, 4:13 PM EDT, 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
413 PM EDT THU APR 05 2012

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

0409 PM     HAIL             2 W BOILING SPRINGS SC  35.05N 82.02W
04/05/2012  E0.75 INCH       SPARTANBURG        SC   AMATEUR RADIO

            BOILING SPRINGS INTERMEDIATE SCHOOL

&&

CSH
Local storm report, Apr 5, 4:42 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
442 PM EDT THU APR 05 2012

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

0433 PM     HAIL             2 N GREER               34.97N 82.23W
04/05/2012  E1.00 INCH       GREENVILLE         SC   TRAINED SPOTTER

            UP TO 1 INCH HAIL REPORTED RIGHT NEXT TO GREER HIGH
            SCHOOL.

&&

JPT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 2:13 PM EDTSevere Thunderstorm WarningGSPGreenville, Pickens62 min
Apr 5, 3:01 PM EDTSevere Thunderstorm WarningGSPLaurens, Spartanburg59 min
Apr 5, 3:06 PM EDTSevere Thunderstorm WarningGSPGreenville, Oconee, Pickens54 min
Apr 5, 3:12 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg63 min
Apr 5, 3:32 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg58 min
Apr 5, 3:55 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg, Union65 min
Apr 5, 4:15 PM EDTSevere Thunderstorm WarningGSPCherokee, Greenville, Spartanburg60 min
Apr 5, 4:26 PM EDTTornado WarningGSPCherokee, Spartanburg38 min
Apr 5, 4:45 PM EDTAreal Flood AdvisoryGSPSpartanburg105 min
Apr 5, 4:56 PM EDTSevere Thunderstorm WarningGSPSpartanburg49 min
Apr 5, 5:49 PM EDTSpecial Weather StatementGSPSpartanburg41 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012Every severe thunderstorm warning 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.