Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 101, NWS Greenville-Spartanburg, SC

April 17, 2012Anderson County, Greenville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 17, 2012, 8:05 PM EDT for Anderson County, Greenville County, South Carolina. It was in force for 55 min. 5 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 17, 2012, 8:05 PM EDT (00:05 UTC)
Expired: Apr 17, 2012, 9:00 PM EDT
In force: 55 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Anderson County, SC, Greenville County, SC

The radar

The Greer radar (KGSP), 30 km from the middle of the area, began a volume at 00:05 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

Time	Report	Where	Remark
Apr 17, 8:35 PM EDT	HAIL 0.75	6 Sw Simpsonville, SC	PENNY SIZED HAIL AND ANOTHER PERIOD OF MARBLE SIZED HAIL.
Apr 17, 8:45 PM EDT	HAIL 0.75	3 Sw Simpsonville, SC	TWO BRIEF PERIODS OF DIME SIZED HAIL AND VERY LITTLE WIND.
Apr 17, 8:47 PM EDT	HAIL 1	4 Wsw Simpsonville, SC	HAIL UP TO QUARTER SIZED AT GREENVILLE STATION 6 AND NOT MUCH WIND.
Apr 17, 9:00 PM EDT	HAIL 1	Simpsonville, SC	QUARTER SIZED HAIL IN SIMPSONVILLE.
Apr 17, 9:05 PM EDT	TSTM WND DMG	2 N Simpsonville, SC	A TREE IN THE ROADWAY NEAR INTERSECTION OF ADAMS MILL ROAD AND HIGHWAY 14.

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 2 storm reports to this severe thunderstorm warning; the first came 42 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 nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.1 hours before the alert went out and 243 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: 648 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 983 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 29 m²/s²
0-3 km storm-relative helicity: 91 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

787 
WUUS52 KGSP 180005
SVRGSP
SCC007-045-180100-
/O.NEW.KGSP.SV.W.0101.120418T0005Z-120418T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
805 PM EDT TUE APR 17 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL ANDERSON COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTHEASTERN GREENVILLE COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 900 PM EDT

* AT 801 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 NEAR
  BELTON...OR 13 MILES EAST OF ANDERSON...AND MOVING NORTHEAST AT 20
  MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  DONALDSON CENTER.
  SIMPSONVILLE...FOUNTAIN INN AND MAULDIN.
  SHOPS AT GREENRIDGE.
  FIVE FORKS.

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 3456 8256 3492 8236 3477 8216 3469 8218
      3459 8224 3453 8224 3442 8242
TIME...MOT...LOC 0005Z 218DEG 18KT 3458 8240

$$

NED

2 follow-up statements

332 
WWUS52 KGSP 180015
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
815 PM EDT TUE APR 17 2012

SCC007-045-180100-
/O.CON.KGSP.SV.W.0101.000000T0000Z-120418T0100Z/
ANDERSON SC-GREENVILLE SC-
815 PM EDT TUE APR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
GREENVILLE AND EAST CENTRAL ANDERSON COUNTIES UNTIL 900 PM EDT...

AT 813 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
WILLIAMSTON...OR 14 MILES EAST OF ANDERSON...MOVING NORTHEAST AT 20
MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  DONALDSON CENTER.
  SIMPSONVILLE.
  MAULDIN AND FOUNTAIN INN.
  FIVE FORKS AND SHOPS AT GREENRIDGE.

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 3458 8254 3492 8236 3477 8216 3472 8217
      3459 8224 3453 8224 3444 8239
TIME...MOT...LOC 0015Z 218DEG 18KT 3459 8241

$$

NED

702 
WWUS52 KGSP 180042
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
842 PM EDT TUE APR 17 2012

SCC007-045-180100-
/O.CON.KGSP.SV.W.0101.000000T0000Z-120418T0100Z/
ANDERSON SC-GREENVILLE SC-
842 PM EDT TUE APR 17 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
GREENVILLE AND EAST CENTRAL ANDERSON COUNTIES UNTIL 900 PM EDT...

AT 837 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 5 MILES
SOUTHWEST OF SIMPSONVILLE...OR 13 MILES SOUTH OF DOWNTOWN
GREENVILLE...MOVING NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  SIMPSONVILLE.
  MAULDIN AND FOUNTAIN INN.
  FIVE FORKS AND SHOPS AT GREENRIDGE.

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 3458 8254 3492 8236 3477 8216 3470 8218
      3459 8224 3453 8224 3448 8233
TIME...MOT...LOC 0042Z 218DEG 18KT 3470 8231

$$

NED

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 17, 7:57 PM EDT, 8 minutes earlier.

Area forecast discussion, Apr 17, 7:57 PM EDT, 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
757 PM EDT TUE APR 17 2012

.SYNOPSIS...
MOISTURE WILL SPREAD NORTHEAST AS A FRONT DRIFTS INTO THE WESTERN
CAROLINAS AND NORTHEAST GEORGIA. THIS FRONT WILL LINGER IN THE AREA
BRINGING MUCH NEEDED RAIN THROUGH WEDNESDAY. THE FRONT WILL
DEPART...AND WEAK HIGH PRESSURE WILL MOVE ACROSS THE AREA ON
THURSDAY AND FRIDAY. ANOTHER FRONT WILL ARRIVE ON SATURDAY. LOW
PRESSURE DEVELOPING ON THE FRONT WILL PASS NEAR THE AREA ON SUNDAY.
DRYING WILL OCCUR BEHIND THE DEPARTING LOW ON MONDAY.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
AS OF 750 PM...NUMEROUS TS/SHRA CONTINUE OVER THE MTNS WITH
CONVECTION DEVELOPING OVER NE GA...THE WRN UPSTATE AND THE YADKIN
RIVER VALLEY. EXPECT CONVECTION TO FILL IN THIS EVENING AS BOUNDARY
SAGS SOUTH ACROSS THE AREA PROVIDING A TRIGGER FOR THE INSTABILITY
IN PLACE OVER THE AREA. CONVECTION ENDS LATER THIS EVENING...BUT
SHRA INCREASE FROM WEST TO EAST AS LIFT AND DEEP MOISTURE RETURN
AHEAD OF THE STRONG UPPER LEVEL SYSTEM. ISOLATED SVR STORMS STILL
EXPECTED THIS EVENING WITH THE GOOD INSTABILITY AND DECENT EFFECTIVE
SHEAR. MADE MANY ADJUSTMENTS FOR CURRENT CONDITIONS THIS EVENING
WITH ONLY MINOR CHANGES AFTER MIDNIGHT BASED ON LATEST GUIDANCE.

AS OF 425 PM...MOST CONVECTION REMAINS LIMITED TO THE NC AND NE GA
MTNS. A FEW CELLS HAVE DEVELOPED OVER THE SAV RIVER...AND CELLS MAY
FILL IN EARLY ACROSS NE GA AND THE WRN UPSTATE WHERE INSTABILITY IS
HIGHEST. CONVECTION SHUD THEN SPREAD/DEVELOP EASTWARD INTO THE ERN
UPSTATE AND NC FOOTHILLS/PIEDMONT. HAVE MODIFIED POPS TO SHOW THIS
TREND. ADJUSTED REST OF THE FIELDS FOR CURRENT CONDITIONS AS WELL.
EFFECTIVE SHEAR IS AROUND 35 KTS OVER THE MTNS AND WRN UPSTATE...
WHERE HIGHEST CAPES ARE AS WELL. EXPECT BEST CHC FOR ANY ADDITIONAL
SVR STORMS TO BE IN THESE LOCATIONS.

AS OF 200 PM...AS EXPECTED...THE COLD FRONT HAS STALLED ACRS ROUGHLY
THE I-85 CORRIDOR THIS AFTN...WITH CONVECTIVE CU DEVELOPING. THE
HIGH RES MODELS ARE IN DECENT AGREEMENT ON CONVECTION FIRING ALONG
THE HIGH TERRAIN (WHICH STARTED IN THE LAST HOUR)...THEN NEW
DEVELOPMENT INVOF THE FRONT AND ALSO ALONG OUTFLOW OFF THE BLUE
RIDGE LATER THIS AFTN THRU THIS EVENING. STILL A MARGINAL SEVERE
THREAT MAINLY ACRS THE UPSTATE AND NE GA WHERE INSTBY IS GREATEST.
FREEZING LEVELS WERE OBSERVED AROUND 12 KFT ON 12Z SNDGS WITH VERY
DRY MID-UPR LEVELS. SO FIRST GUESS CORE HEIGHTS OF 22.5 TO 23 KFT
FOR 55DBZ SEEMS GOOD FOR LARGE HAIL AND DAMAGING WINDS. EFFECTIVE
SHEAR ON THE SPC MESOANALYSIS PAGE BARELY 30 KTS...SO LIMITED
ORGANIZATIONAL POTENTIAL. WITH THAT SAID...SLIGHT RISK AREA STILL
LOOKS GOOD.

TONIGHT AND WEDNESDAY...AN AREA OF STRONG QG FORCING AND JET
DIVERGENCE WILL OVERSPREAD THE CWFA FROM THE WEST...MAXING OUT
AROUND 12Z WED. A LLVL WAVE IS PROGGED TO DEVELOP INVOF CENTRAL GULF
STATES...INCREASING A SELY LLVL FLOW ATOP A STRENGTHENING COLD AIR
DAMMING (CAD) WEDGE. THINGS LOOK LINED UP WELL FOR CATEGORICAL POPS
AND DECENT QPF LATE TONIGHT INTO WEDNESDAY MORNING. TAKING A BLEND
OF MODEL QPF AND HPC RESULTS IN GENERALLY 1.0 TO 1.5" OF RAIN THRU
WEDNESDAY AFTN. RAIN SHUD REALLY BEGIN TO TAPER OFF TOWARD END OF
AFTN AS FORCING SHIFTS EAST OF THE AREA. TEMPS ARE TRICKY WITH
CLOUDS AND PRECIP AND CAD. I TRIED BLENDING STRAIGHT NAM WITH BC MOS
GRIDS...WHICH MAY STILL BE TOO WARM ALONG AND SOUTH OF I-85. TEMPS
DROP INTO THE 50S OVERNIGHT AND ONLY RISE 5-8 DEGREES WEDNESDAY.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
AT 130 PM TUESDAY...DEEPER MOISTURE AND WARM CONVEYOR BELT FLOW WILL
BE SHIFTING EAST ACRS THE CWFA WEDNESDAY NIGHT STEADILY DWINDLING
SHOWER CHANCES. CLOUDINESS SHOULD REMAIN CONSIDERABLE INTO THURSDAY
MORNING WITH LINGERING SFC WEDGE BUT MODEL TIMEHEIGHTS DEPICT ENUF
MIXING TO ALLOW SUNSHINE TO RETURN WARMING TEMPERATURES TO A FEW
DEGREES ABOVE THE MID-APRIL CLIMO IN THE AFTERNOON. BROADENING
RETURN FLOW AND THE ONSET ON GULF TAP IS EXPECTED FOR FRIDAY AS MAX
TEMPERATURES ARE SLATED TO BE 6-8 DEG F ABOVE CLIMO. LACK OF
INHIBITION AND DESTABILIZING ATMOSPHERE SHOULD BE ABLE TO PROMOTE
DIURNAL TSTM ACTIVITY...ESPECIALLY ACRS THE MTNS.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AT 1105 AM TUESDAY...THE POTENTIAL REMAINS FOR A PERIOD OF ACTIVE WX
SATURDAY INTO SUNDAY FEATURING PROGRESSIVE UPPER HEIGHT FALLS ATOP
THE SE CONUS AND AN INCREASE IN DEEP LAYERED FORCING DOWNSTREAM OF
L/WV TROUGH AXIS AND GULF COAST CLOSED UPPER LOW. ATTENDANT SFC BNDRY
WILL ALSO BE SAGGING SE INTO THE CWFA. IN CONCERT WITH MODERATE
MOISTURE TRANSPORT FROM THE GULF...DEEP CONVECTIVE ACTIVITY SHOULD
BE NUMEROUS AND THERE IS THE POTENTIAL FOR AREAS OF HEAVY RAIN TO
FALL.

THE LATEST MEDIUM RANGE MODELS ABSORB CLOSED UPPER LOW INTO THE MEAN
FLOW BY MONDAY AND PATTERN PROGRESSION SHOULD TRANSLATE SFC FRONT TO
THE COAST. IF THE 17/00 UTC RUN OF THE ECMWF IS IN THE BALLPARK...A
PERIOD OF BLUSTERY AND COOLER CONDITIONS WITH WRAP-AROUND SHOWER
CHANCES SHOULD EXIST ON MONDAY. IT REMAINS TO BE SEEN HOW QUICKLY
EASTERN CONUS L/WV TROUGH LIFTS OUT BY THE END OF THE PERIOD...BUT
AT THIS POINT...AN EFFECTIVELY DRY FCST AND BELOW NORMAL
TEMPERATURES ARE ON TAP.

&&

.AVIATION /00Z WEDNESDAY THROUGH SUNDAY/...
AT KCLT...CONVECTION HAS BEEN HELD AT BAY TO THE NORTH AND EAST OF
THE AIR FIELD. OUTFLOW BOUNDARY/COLD FRONT MOVING ACROSS THE SITE
ATTM SHIFTING WIND TO THE ENE. STILL EXPECT SOME CONVECTION TO MOVE
NEAR THE SITE AS THE BOUNDARY MOVES SOUTH AND PROVIDES A TRIGGER TO
ACT ON THE INSTABILITY IN PLACE. TSRA CHC WILL END LATE THIS EVENING
BUT SHRA CHC INCREASES AS LIFT AND DEEP MOISTURE MOVE IN AHEAD OF A
STRONG UPPER SYSTEM. THIS SHUD LEAD TO MVFR RESTRICTIONS BY
DAYBREAK. NELY WINDS WILL CONTINUE OVERNIGHT. MVFR EXPECTED THRU THE
DAY WITH SHRA CONTINUING...WITH SOME IMPROVEMENT POSSIBLE TOWARD THE
END OF THE PERIOD AS SHRA DIMINISH. NELY WIND CONTINUES THRU THE DAY
WITH GUSTS POSSIBLE WITH MIXING IN THE MORNING.

ELSEWHERE...TSRA CHC CONTINUES/INCREASES THRU THE EVENING BEFORE
DIMINISHING AFTER MIDNIGHT. RESTRICTIONS THIS EVENING WILL BE FROM
ANY CELLS MOVING OVER AIR FIELDS. WIDESPREAD SHRA WILL DEVELOP
OVERNIGHT AS LIFT AND DEEP MOISTURE MOVE IN AHEAD OF A STRONG UPPER
SYSTEM. THIS SHUD LEAD TO MVFR THEN IFR RESTRICTIONS BY DAYBREAK.
CONDITIONS IMPROVE TO MVFR BY MID-MORNING WITH GUSTY WINDS OUTSIDE
OF THE MTNS. HIGHER MVFR EXPECTED BY LATE AFTERNOON AS SHRA DIMINISH
FROM WEST TO EAST AND GUSTS COME TO AN END.

OUTLOOK...A LINGERING MOIST BOUNDARY LAYER WILL LIKELY CREATE A
RETURN TO IFR RESTRICTIONS WED NIGHT BEFORE DRYING BEGINS IN EARNEST
THU. EXPECT MAINLY VFR CONDITIONS THROUGH FRI...EXCEPT FOR POSSIBLE
EARLY MORNING FOG. ANOTHER COLD FRONT WILL LIKELY BRING
PRECIPITATION AND RESTRICTIONS BACK INTO THE AREA OVER 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...PAT
NEAR TERM...ARK/RWH
SHORT TERM...CSH
LONG TERM...CSH
AVIATION...RWH

Hazardous weather outlook, Apr 17, 3:22 PM EDT, 4 hours 43 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
322 PM EDT TUE APR 17 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-181930-
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-
322 PM EDT TUE APR 17 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.

THUNDERSTORM COVERAGE WILL EXPAND FROM THE MOUNTAINS AND INTO
THE FOOTHILLS AND PIEDMONT THROUGH THIS EVENING. ANY THUNDERSTORM
WILL HAVE THE POTENTIAL TO PRODUCE FREQUENT CLOUD TO GROUND
LIGHTNING...BRIEFLY GUSTY WINDS...AND VERY HEAVY RAINFALL. A FEW
THUNDERSTORMS WILL BECOME SEVERE...PRODUCING DAMAGING WIND GUSTS
IN EXCESS OF 60 MPH AND HAIL AS LARGE AS QUARTERS.

WIDESPREAD SHOWERS...WITH ISOLATED TO SCATTERED THUNDERSTORMS...WILL
LIKELY CONTINUE THROUGH THE OVERNIGHT HOURS. LOCALLY HEAVY
RAINFALL WILL BE POSSIBLE...ESPECIALLY ALONG THE EASTERN SLOPES OF
THE MOUNTAINS...AND THE ADJACENT FOOTHILLS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

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, Apr 17, 6:48 PM EDT, 1 hour 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
648 PM EDT TUE APR 17 2012

GAZ018-SCZ001-004-172315-
GREATER OCONEE-OCONEE MOUNTAINS-STEPHENS-
648 PM EDT TUE APR 17 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN STEPHENS AND SOUTHERN
OCONEE COUNTIES THROUGH 715 PM EDT...

AT 646 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTH OF LAKE HARTWELL...OR 12 MILES EAST
OF TOCCOA...MOVING NORTHEAST AT 20 MPH.

THIS STORM WILL BE NEAR...
  WESTMINSTER...

PEOPLE IN EASTERN STEPHENS AND SOUTHERN OCONEE COUNTIES...INCLUDING
THE FOLLOWING LOCATIONS...

LAKE HARTWELL AND WESTMINSTER...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3455 8325 3476 8318 3465 8294 3452 8301
      3454 8310 3450 8315

NED

Special weather statement, Apr 17, 7:07 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
707 PM EDT TUE APR 17 2012

GAZ017-018-172330-
HABERSHAM-STEPHENS-
707 PM EDT TUE APR 17 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN STEPHENS AND
SOUTHERN HABERSHAM COUNTIES THROUGH 730 PM EDT...

AT 703 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR ALTO...OR 9 MILES NORTHWEST OF HOMER...
MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL BE NEAR...
  BALDWIN...
  CORNELIA...
  DEMOREST...

PEOPLE IN NORTHWESTERN STEPHENS AND SOUTHERN HABERSHAM COUNTIES...
INCLUDING THE FOLLOWING LOCATIONS...

BALDWIN...CORNELIA...DEMOREST AND CLARKESVILLE...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3454 8362 3458 8364 3460 8365 3472 8359
      3462 8334 3447 8344 3449 8354 3443 8361
      3444 8363 3451 8367

NED

Local storm report, Apr 17, 7:11 PM EDT, 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
711 PM EDT TUE APR 17 2012

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

0452 PM     HAIL             2 NNW PATTERSON         36.02N 81.57W
04/17/2012  E0.50 INCH       CALDWELL           NC   PUBLIC

            PEA TO MARBLE SIZED HAIL FELL AND COVERED THE GROUND NEAR
            THE INTERSECTION OF KIRBY MOUNTAIN ROAD AND HIGHWAY 321.
            NOT MUCH WIND.

&&

OUTLAW

Special weather statement, Apr 17, 7:18 PM EDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
718 PM EDT TUE APR 17 2012

NCZ049-053-505-172345-
BUNCOMBE-MCDOWELL MOUNTAINS-YANCEY-
718 PM EDT TUE APR 17 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN BUNCOMBE...SOUTHERN
YANCEY AND WESTERN MCDOWELL COUNTIES THROUGH 745 PM EDT...

AT 717 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHWEST OF MONTREAT...OR 12 MILES
NORTHEAST OF DOWNTOWN ASHEVILLE...MOVING EAST AT 25 MPH.

PEOPLE IN NORTHEASTERN BUNCOMBE...SOUTHERN YANCEY AND WESTERN
MCDOWELL COUNTIES...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3586 8226 3566 8219 3558 8245 3575 8253

NED

Special weather statement, Apr 17, 7:32 PM EDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
732 PM EDT TUE APR 17 2012

GAZ010-NCZ062-063-SCZ001-180000-
MACON-OCONEE MOUNTAINS-RABUN-SOUTHERN JACKSON-
732 PM EDT TUE APR 17 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN RABUN...NORTHWESTERN
OCONEE...SOUTHEASTERN MACON AND SOUTHERN JACKSON COUNTIES THROUGH 800
PM EDT...

AT 730 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES EAST OF PINE MOUNTAIN...OR 13 MILES NORTH
OF WALHALLA...MOVING NORTH AT 20 MPH.

THIS STORM WILL BE NEAR...
  HIGHLANDS...

PEOPLE IN EASTERN RABUN...NORTHWESTERN OCONEE...SOUTHEASTERN MACON
AND SOUTHERN JACKSON COUNTIES...INCLUDING THE FOLLOWING LOCATION...

PINE MOUNTAIN...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3511 8322 3510 8302 3505 8305 3505 8304
      3471 8317 3483 8340

NED

Special weather statement, Apr 17, 7:36 PM EDT, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
736 PM EDT TUE APR 17 2012

GAZ010-017-018-SCZ001-004-180000-
GREATER OCONEE-HABERSHAM-OCONEE MOUNTAINS-RABUN-STEPHENS-
736 PM EDT TUE APR 17 2012

...STRONG THUNDERSTORMS WILL AFFECT HABERSHAM...SOUTHERN RABUN...
SOUTHWESTERN OCONEE AND STEPHENS COUNTIES THROUGH 800 PM EDT...

AT 734 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES SOUTHEAST OF
NACOOHE LAKE TO BOYDVILLE...MOVING EAST AT 25 MPH.

THESE STORMS WILL BE NEAR...
  TURNERVILLE...
  LAKE RABUN...
  TALLULAH FALLS...
  EASTANOLEE...
  LONG CREEK...

PEOPLE IN HABERSHAM...SOUTHERN RABUN...SOUTHWESTERN OCONEE AND
STEPHENS COUNTIES...INCLUDING THE FOLLOWING LOCATIONS...

NACOOHE LAKE...TURNERVILLE...LAKE RABUN...TOCCOA...LAKEMONT...
TALLULAH FALLS...EASTANOLEE AND LONG CREEK...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

PEA SIZE HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH
THESE STORMS.

LAT...LON 3480 8363 3488 8319 3453 8303 3452 8308
      3453 8311 3451 8314 3446 8341 3448 8346
      3448 8348

NED

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 8:38 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	82 min
Apr 17, 8:57 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	14 min
Apr 17, 8:59 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Spartanburg	76 min
Apr 17, 9:29 PM EDT	Special Weather Statement	GSP	York	31 min
Apr 17, 9:41 PM EDT	Severe Thunderstorm Warning	GSP	Cherokee, York	64 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every 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.