Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 87, NWS Greenville-Spartanburg, SC

April 5, 2012Laurens County, Spartanburg County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Apr 5, 2012, 3:01 PM EDT for Laurens County, Spartanburg County, South Carolina. It was in force for 59 min. 1 report 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, 3:01 PM EDT (19:01 UTC)
Expired
Apr 5, 2012, 4:00 PM EDT
In force
59 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Laurens County, SC, Spartanburg County, SC

The radar

The Greer radar (KGSP), 28 km from the middle of the area, began a volume at 19:01 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, 3:18 PM EDTHAIL 11 Se Woodruff, 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 one storm report to this severe thunderstorm warning; the first came 17 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, 7.0 hours before the alert went out and 237 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.

309 
WUUS52 KGSP 051901
SVRGSP
SCC059-083-052000-
/O.NEW.KGSP.SV.W.0087.120405T1901Z-120405T2000Z/

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

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL LAURENS COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTHEASTERN SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 400 PM EDT

* AT 257 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
  WOODRUFF...OR 13 MILES NORTH OF LAURENS...AND MOVING NORTHEAST AT
  10 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  WOODRUFF.
  ENOREE.

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 3472 8217 3496 8176 3480 8179 3472 8181
      3461 8203
TIME...MOT...LOC 1901Z 246DEG 9KT 3469 8207

$$

NED
2 follow-up statements
624 
WWUS52 KGSP 051924 RRA
SVSGSP

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

SCC059-051934-
/O.CAN.KGSP.SV.W.0087.000000T0000Z-120405T2000Z/
LAURENS SC-
324 PM EDT THU APR 5 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL LAURENS COUNTY
IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA.

LAT...LON 3466 8197 3466 8199 3469 8205 3474 8208
      3475 8211 3476 8211 3496 8176 3472 8182
      3465 8195 3465 8197
TIME...MOT...LOC 1924Z 246DEG 9KT 3471 8201

$$

SCC083-052000-
/O.CON.KGSP.SV.W.0087.000000T0000Z-120405T2000Z/
SPARTANBURG SC-
324 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
SPARTANBURG COUNTY UNTIL 400 PM EDT...

AT 322 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
WOODRUFF...OR 14 MILES NORTH OF LAURENS...MOVING NORTHEAST AT 10 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
SOUTHEASTERN SPARTANBURG COUNTY.

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 3466 8197 3466 8199 3469 8205 3474 8208
      3475 8211 3476 8211 3496 8176 3472 8182
      3465 8195 3465 8197
TIME...MOT...LOC 1924Z 246DEG 9KT 3471 8201

$$

NED
084 
WWUS52 KGSP 051945
SVSGSP

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

SCC083-052000-
/O.CON.KGSP.SV.W.0087.000000T0000Z-120405T2000Z/
SPARTANBURG SC-
345 PM EDT THU APR 5 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
SPARTANBURG COUNTY UNTIL 400 PM EDT...

AT 342 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
EAST OF WOODRUFF...OR 15 MILES SOUTH OF SPARTANBURG...MOVING 
NORTHEAST AT 10 MPH. AT 318 PM...QUARTER SIZED HAIL WAS REPORTED 
FROM THE WOODRUFF AREA.

LOCATIONS IMPACTED INCLUDE...
  PAULINE.

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 3478 8208 3496 8176 3472 8182 3467 8191
TIME...MOT...LOC 1945Z 246DEG 9KT 3474 8193

$$

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 5, 10:46 AM EDT, 4 hours 15 minutes earlier.

Area forecast discussion, Apr 5, 10:46 AM EDT, 4 hours 15 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1046 AM EDT THU APR 5 2012

.SYNOPSIS...
LOW PRESSURE WILL APPROACH FROM THE WEST TODAY ENHANCING SHOWER AND
THUNDERSTORM ACTIVITY INTO THE EVENING.  THE UPPER LOW WILL MERGE
WITH THE DEPARTING TROUGH AS IT MOVES OFF THE EAST COAST ON FRIDAY.
COOL AND DRY HIGH PRESSURE WILL BUILD OVER OUR REGION INTO SATURDAY
AND THEN 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 TONIGHT/...
AS OF 1045 AM...AREA OF SHRA ALONG THE I-40 CORRIDOR IS MOVING EAST
WITH WEAK SHORT WAVE. THIS ACTIVITY SHUD END/MOVE EAST BEFORE NOON.
OTHERWISE...GOING FCST IN PRETTY GOOD SHAPE. COLD FRONT IS DRAPED
ACROSS THE CWFA. HOWEVER...THE VERY DRY DEW POINTS HAVE NOT MADE IT
INTO THE CWFA. THIS COULD BE AN AFFECT OF THE SHRA. STILL EXPECT
LOWER DEW POINTS AND INSTABILITY ACROSS THE NORTH...BUT THE SLOWER
ONSET OF VERY DRY AIR COULD KEEP THINGS UNSTABLE FARTHER NORTH. SVR
CHANCES CLOSER TO THE FRONT ARE LOOKING EVEN BETTER THAN PREVIOUSLY
GIVEN THE VERY DRY MID LEVEL AIR SEEN ON THE 12Z KFFC RAOB. DCAPE
VALUES ARE CURRENTLY AS HIGH AS 1100 J/KG ACROSS THE UPSTATE/NE GA.
THIS COMBINED WITH A VERY LOW WET BULB ZERO SHUD ENHANCE THE CHANCE
OF DAMAGING DOWNBURSTS AND LARGE HAIL. AT LEAST MODERATE INSTABILITY
IS EXPECTED WITH CURRENT CAPE VALUES OF 1000 J/KG ACROSS THE SAME
AREA. GUIDANCE STILL SHOWING GOOD UPPER DIVERGENCE WITH APPROACHING
JET MAX AHEAD OF THE H5 LOW. GOOD LOW LEVEL CONVERGENCE LOOKS ON
TRACK WITH THE SFC FRONT IN PLACE. INCREASED HIGHS SLIGHTLY OVER THE
UPSTATE GIVEN CURRENT TEMPS. WINDS ADJUSTED TO CURRENT GUIDANCE
WHICH IS MORE IN LINE WITH ACTUAL FRONTAL PLACEMENT.

AS OF 555 AM EDT...SKIES HAVE LARGELY CLEARED BEHIND A SHORT WAVE
THAT/S MOVED INTO THE WESTERN PART OF THE FA. AHEAD OF THE WAVE
THERE IS A MID LEVEL OVERCAST AND SOME HIGH BASED SHRA. THE GRIDS
HAVE BEEN UPDATED TO REFLECT THESE TRENDS. THE CLEARING SKIES WILL
ALLOW FOR A RAPID WARMUP THIS MORNING AND MAY SIGNAL AN EARLY START
FOR THUNDERSTORMS OVER THE MOUNTAINS.

PREVIOUS DISCUSSION...
AN UPPER LOW CURRENTLY CENTERED OVER TULSA OK WILL MOVE QUICKLY EAST
SOUTHEASTWARD TODAY AND TONIGHT. BY 12 UTC FRI THE LOW SHOULD BE
LOCATED NEAR SAVANNAH. A BACK DOOR COLD FRONT WILL SLOWLY MOVE SOUTH
ACROSS THE FA THIS MORNING. THE NAM AND MOST OTHER MODELS STALL THE
FRONT FOR A WHILE OVER THE WRN UPSTATE AND THE CENTRAL NC
MTNS...WHILE THE GFS IS A LITTLE MORE PROGRESSIVE. THE SREF ALSO
STALLS THE FRONT OVER THE FA...AND THE NAM IS THE PREFERRED SOLUTION
FOR THE FIRST TWO PERIODS OF THE FORECAST.

THERE WILL BE GOOD LLVL CONVERGENCE AND MOISTURE POOLING...WITH
DEWPOINTS LIKELY TO BE IN THE L60S ALONG THE SFC FRONT. AT THE SAME
TIME...THE NAM SPREADS STRONG Q-VECTOR CONVERGENCE ACROSS THE FA
DURING THE AFTN HOURS. AS LAPSE RATES STEEPEN AHEAD OF THE UPPER
LOW...VIGOROUS CONVECTION SHOULD DEVELOP NEAR THE BOUNDARY. THERE IS
NOT MUCH LOW CLOUD COVER BEHIND THE FRONT YET...AND THE REGION WILL
BE UNDER WEAK NVA MOST OF THE MORNING WHICH WILL MEAN LIMITED CLOUD
COVER. THIS SHOULD ALSO HELP THE AIRMASS DESTABILIZE...ADDING IN THE
DEVELOPMENT OF CONVECTION. THERE EVEN LOOKS TO BE A MODEST AMOUNT OF
MID LEVEL DRYING...PARTICULARLY EARLY IN THE EVENT...AND SOME OF THE
STORMS ARE EXPECTED TO BECOME SEVERE. THE DEEP LAYER SHEAR WILL BE
RESPECTABLE...THOUGH THE LLVL WINDS WILL BE RATHER WEAK. THIS IS
LIKELY TO SUPPORT SOME PERSISTENT MULTI-CELL SEVERE STORMS.

THE NAM HAS A COUPLE INCHES OF RAIN ALONG THE BNDRY THIS AFTN AND
EVENING. THE NEW ECMWF/S AREA OF HEAVIER RAIN IS SITUATED IN ALMOST
THE SAME AREA...BUT IS MUCH LIGHTER. SO ARE THE SREF AND CANADIAN.
OF COURSE AN AREA OF SLOW MOVING...TRAINING THUNDERSTORMS COULD VERY
WELL PRODUCED SEVERAL INCHES OF LOCALIZED RAINFALL. HPC ONLY HAS
AROUND AN INCH OF QPF...ALSO ACROSS THE NC MTNS AND MUCH OF THE
UPSTATE. THIS ISN/T ENOUGH FOR ME TO HOIST A FLASH FLOOD WATCH YET.
HOWEVER...A SHORT FUSED WATCH ISN/T OUT OF THE QUESTION DEPENDING
HOW STORMS DEVELOP THIS AFTN.

MOST OF THE NC FOOTHILLS...PIEDMONT AND THE NRN MTNS SHOULD MISS OUT
ON THE ACTION TODAY AS THESE AREAS WILL BE IN THE STABLE AIR NORTH
OF THE BNDRY. HOWEVER...BY THIS EVENING...MOST OF THE FA SHOULD SEE
A PERIOD OF PERSISTENT RAIN OR SHRA AS THE DIV-Q BULLSEYE ROLLS
THROUGH...INITIATING SFC LOW CYCLOGENESIS ALONG THE SE GA COAST.
LOWS FORMING IN THIS AREA TYPICALLY BRING RAIN TO A GOOD BIT OF THE
FA. SOME MODELS HAVE A SECONDARY AREA OF HEAVIER RAIN /0.5 - 1.00
INCH/ ACROSS THE NC PIEDMONT AND NE UPSTATE OVERNIGHT...WHICH IS
WHAT I/VE FAVORED IN THE GRIDS. LATE TONIGHT PCPN SHOULD TAPER OFF
FROM WEST TO EAST AS A DIGGING NRN STREAM TROUGH PUSHES THE SRN
STREAM LOW OUT TO SEA.

&&

.SHORT TERM /FRIDAY THROUGH SATURDAY NIGHT/...
AS OF 230 AM EDT THURSDAY...THE START OF THE SHORT TERM IS 12Z
FRIDAY AT A POINT WHEN THE AXIS OF THE SHORTWAVE WILL BE PASSING
THROUGH OUR MOST EASTERN PIEDMONT COUNTIES...NEAR AND EAST OF CLT.
THIS IS DEPICTED ON ALL OPERATIONAL MODELS.  SHOWER ACTIVITY WILL BE
DECREASING DURING THE DAY AND BE ENDING BY EARLY AFTERNOON IN THE
MOUNTAINS AND OVER ALL PIEDMONT LOCATIONS BY LATE AFTERNOON.  WE MAY
GET SOME BREAKS IN THE CLOUD COVER LATE IN THE DAY WHICH COULD LEAD
TO SLIGHTLY WARMER TEMPERATURES THAN PREVIOUSLY FORECAST.  STILL
GOING FOR HIGHS SEVERAL DEGREES BELOW NORMAL FOR THIS TIME OF YEAR.

DRY AND COOL HIGH PRESSURE CENTERED NEAR THE GREAT LAKES AT 00Z
SATURDAY WILL BRING US THE COOLEST TEMPERATURES WE HAVE HAD IN A
WHILE.  GOING FOR LOWS EARLY SATURDAY IN THE 30S ACROSS MUCH OF
WESTERN NORTH CAROLINA WITH LOWER 30S IN SOME OF THE NORTHERN
MOUNTAINS.  A LOW AMPLITUDE RIDGE BUILDS OVER THE SOUTHERN
APPALACHIANS SATURDAY AND SATURDAY NIGHT.  RH VALUES SATURDAY
AFTERNOON AROUND 30 PERCENT.  HIGHS SATURDAY NEAR NORMAL.  LOWS
SATURDAY NIGHT A FEW DEGREES MILDER THAN FRIDAY NIGHT.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
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 /15Z THURSDAY THROUGH MONDAY/...
AT KCLT...NE WINDS SHOULD INCREASE TO AROUND 10 KTS BY MID MORNING
AND GENERALLY STAY FROM THAT DIRECTION AT THAT SPEED THROUGH THE
DAY. A MID LEVEL DECK OF CLOUDS WITH A FEW SPRINKLES SHOULD CLEAR
OUT BY 9 AM. VFR CIGS IN THE 4-5KFT RANGE WILL GRADUALLY BUILD INTO
THE REGION FROM THE NORTH DURING THE EARLY AFTN. BY LATE AFTN OR
EARLY EVENING SHRA WILL BREAK OUT. ONCE PCPN BEGINS...CIGS SHOULD
QUICKLY LOWER THROUGH THE MVFR AND INTO THE IFR RANGE DURING THE
EVENING. PERIODS OF RAIN WILL LAST MOST OF THE NIGHT. SOME MODELS
HAVE HEAVY RAIN BY LATE EVENING INTO THE EARLY MORNING HOURS. WHILE
NOT IN THE TAF YET...THIS IS A POSSIBILITY.

ELSEWHERE...A BACK DOOR COLD FRONT WILL CONTINUE TO SLOWLY DROP
SOUTH ACROSS THE REGION THIS MORNING. THE BNDRY IS EXPECTED TO
STALL BETWEEN KGSP AND KAND THIS AFTN. STRONG TSTMS SHOULD DEVELOP
ALONG AND A LITTLE NORTH OF THE SFC FRONT AND PREVAILING SHRA WITH
VCTS HAS BEEN RETAINED AT THE UPSTATE SITES AND KAVL. CIGS WILL BE
SLOW TO FALL TODAY...BUT THEY SHOULD FALL QUICKLY INTO THE IFR RANGE
THIS EVENING AS LOW LEVEL WINDS STRENGTHEN NORTH OF A DEVELOPING
AREA OF LOW PRESSURE DOWN OVER THE LOW COUNTRY. PERIODS OF SHOWERS
OR RAIN WILL LAST MOST OF THE NIGHT ALONG WITH IFR CIGS. CIGS MAY
LOWER INTO THE LIFR RANGE OVERNIGHT.

OUTLOOK...RAIN WILL END FRIDAY MORNING AND SKIES WILL CLEAR. 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...DEO
NEAR TERM...MCAVOY/RWH
SHORT TERM...DEO
LONG TERM...DEO
AVIATION...MCAVOY
Hazardous weather outlook, Apr 5, 9:18 AM EDT, 5 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
918 AM EDT THU APR 5 2012

GAZ010-017-018-026-028-029-NCZ048-051>053-058-059-062>065-507>510-
SCZ001>014-019-061330-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-MADISON-SWAIN-HAYWOOD-
BUNCOMBE-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-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-
918 AM EDT THU APR 5 2012

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

.DAY ONE...TODAY AND TONIGHT.

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>037-049-050-056-057-068>072-082-501>506-061330-
AVERY-ALEXANDER-IREDELL-DAVIE-YANCEY-MITCHELL-CATAWBA-ROWAN-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
918 AM EDT THU APR 5 2012

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

.DAY ONE...TODAY 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...

NONE.

MCAVOY/RWH

In the hours before

Local storm report, Apr 5, 2:01 PM EDT, 1 hour before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
201 PM EDT THU APR 05 2012

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

0156 PM     HAIL             4 NW SWANNANOA          35.64N 82.44W
04/05/2012  E1.00 INCH       BUNCOMBE           NC   PUBLIC

            PEA TO QUARTER SIZE HAIL REPORTED E OF ASHEVILLE NC

&&

PTANNER
Special weather statement, Apr 5, 2:10 PM EDT, 51 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
210 PM EDT THU APR 5 2012

SCZ003-051845-
GREENVILLE MOUNTAINS-
210 PM EDT THU APR 5 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN GREENVILLE COUNTY
THROUGH 245 PM EDT...

AT 209 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CAESARS HEAD...OR 12 MILES SOUTHEAST OF
BREVARD...MOVING EAST AT 10 MPH.

THIS STORM WILL BE NEAR...
  CAESARS HEAD...
  JONES GAP STATE PARK...
  MARIETTA...

PEOPLE IN NORTHWESTERN GREENVILLE COUNTY...INCLUDING THE FOLLOWING
LOCATIONS...

CAESARS HEAD AND JONES GAP STATE PARK...

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 3510 8272 3510 8269 3513 8268 3512 8263
      3516 8255 3516 8252 3518 8246 3516 8245
      3520 8242 3521 8238 3506 8232 3501 8255
      3502 8257 3507 8258 3507 8275

NED
Local storm report, Apr 5, 2:47 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
247 PM EDT THU APR 05 2012

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

0230 PM     HAIL             2 NE CAESARS HEAD       35.12N 82.59W
04/05/2012  E1.00 INCH       GREENVILLE         SC   PARK/FOREST SRVC

            QUARTER SIZED HAIL ALMOST COVERED THE GROUND

&&

LG
Local storm report, Apr 5, 2:55 PM EDT, 6 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
255 PM EDT THU APR 05 2012

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

0255 PM     HAIL             ASHEVILLE               35.57N 82.55W
04/05/2012  E1.00 INCH       BUNCOMBE           NC   PUBLIC

            DIME TO QUARTER SIZE HAIL COVERING GROUND REPORTED BY
            PUBLIC.

&&

PTANNER
Local storm report, Apr 5, 2:57 PM EDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
257 PM EDT THU APR 05 2012

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

0245 PM     HAIL             ASHEVILLE               35.57N 82.55W
04/05/2012  E0.50 INCH       BUNCOMBE           NC   NWS EMPLOYEE

&&

LG
Local storm report, Apr 5, 3:01 PM EDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
301 PM EDT THU APR 05 2012

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

0256 PM     HAIL             ASHEVILLE               35.57N 82.55W
04/05/2012  E0.75 INCH       BUNCOMBE           NC   TRAINED SPOTTER

&&

LG

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, 3:06 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, 4:44 PM EDTSevere Thunderstorm WarningGSPChester, Union, York76 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.