Alert archive / South Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 18, NWS Greenville-Spartanburg, SC

August 7, 2012York County, South Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 7, 2012, 8:07 PM EDT for York County, South Carolina. It was in force for 3 hr. 4 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
Aug 7, 2012, 8:07 PM EDT (00:07 UTC)
Expired
Aug 7, 2012, 11:18 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

County York County, SC

The radar

The Greer radar (KGSP), 119 km from the middle of the area, began a volume at 00:09 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
Aug 7, 8:15 PM EDTFLASH FLOOD2 Nw Fort Mill, SCHIGHWAY PATROL REPORTS ROADWAY CLOSED DUE TO HIGH WATER AT THE INTERSECTION OF PLEASANT ROAD AND STEELE CREEK ROAD.
Aug 7, 8:15 PM EDTFLASH FLOOD3 Wnw Pineville, SCSPOTTER REPORTED A STREAM OF WATER SEVERAL INCHES DEEP CROSSING THE SOUTH BOUND LANES OF INTERSTATE 77 ADJACENT TO CAROWINDS.
Aug 7, 8:30 PM EDTFLASH FLOOD3 W Pineville, SCROAD CLOSED DUE TO HIGH WATER AT THE INTERSECTION OF HIGHWAY 21 AND REGENT PARKWAY.
Aug 7, 8:34 PM EDTFLASH FLOOD4 W Pineville, SCROAD CLOSED DUE TO HIGH WATER NEAR THE INTERSECTION OF ALTURA ROAD AND PLEASANT ROAD WHICH IS ABOUT A MILE SOUTHWEST OF CAROWINDS.

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 4 storm reports to this flash flood warning; the first came 8 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.1 hours before the alert went out and 151 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 00:00Z on 2012-08-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1653 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2012-08-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
1653 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
832 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

009 
WGUS52 KGSP 080007
FFWGSP
SCC091-080600-
/O.NEW.KGSP.FF.W.0018.120808T0007Z-120808T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
807 PM EDT TUE AUG 7 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL YORK COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 200 AM EDT

* AT 805 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. BETWEEN THREE AND FOUR INCHES OF RAIN ARE             
  ESTIMATED TO HAVE FALLEN NORTH OF FORT MILL.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CAROWINDS AND FORT MILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

TO REPORT HIGH WATER...FLOODING...MUDSLIDES...LANDSLIDES OR OTHER
SEVERE WEATHER THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL
FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3495 8092 3505 8103 3511 8094 3506 8089
      3501 8090 3497 8088

$$

07
3 follow-up statements
171 
WGUS72 KGSP 080058
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
858 PM EDT TUE AUG 7 2012

SCC091-080600-
/O.CON.KGSP.FF.W.0018.000000T0000Z-120808T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YORK SC-
858 PM EDT TUE AUG 7 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL YORK COUNTY
UNTIL 200 AM EDT...

AT 854 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.  
THREE TO FOUR INCHES OF RAIN ARE ESTIMATED TO HAVE FALLEN IN 
THIS AREA.

ALTHOUGH RAINFALL RATES HAVE DECREASED...RUNOFF FROM EXCESSIVE 
RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT 
WILL EXPERIENCE FLASH FLOODING INCLUDE...CAROWINDS AND FORT MILL.

FLOODING WAS REPORTED AT THE INTERSECTION OF PLEASANT ROAD AND 
STEELE CREEK DRIVE. STREAM AND CREEK LEVELS WERE RISING IN THE AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3495 8092 3505 8103 3511 8094 3506 8089
      3501 8090 3497 8088

$$

07
816 
WGUS72 KGSP 080221
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1021 PM EDT TUE AUG 7 2012

SCC091-080600-
/O.CON.KGSP.FF.W.0018.000000T0000Z-120808T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YORK SC-
1021 PM EDT TUE AUG 7 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL YORK COUNTY
UNTIL 200 AM EDT...

AT 1018 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THUNDERSTORMS WITH VERY HEAVY RAINFALL HAD MOVED OUT OF THE 
WARNED AREA. EARLIER THIS EVENING...THUNDERSTORMS PRODUCED OVER 
THREE INCHES OF RAINFALL IN NEAR CAROWINDS.

ALTHOUGH STREAM LEVELS UPSTREAM FROM CAROWINDS HAVE STARTED TO 
SUBSIDE...WATER LEVELS WILL REMAIN ELEVATED LATE THIS EVENING. SOME 
LOCATIONS THAT WILL EXPERIENCE FLASH FLOODING INCLUDE...STEELE 
CREEK...CAROWINDS AND FORT MILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.

&&

LAT...LON 3495 8092 3505 8103 3511 8094 3506 8089
      3501 8090 3497 8088

$$

07
899 
WGUS72 KGSP 080318
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1118 PM EDT TUE AUG 7 2012

SCC091-080331-
/O.CAN.KGSP.FF.W.0018.000000T0000Z-120808T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
YORK SC-
1118 PM EDT TUE AUG 7 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL YORK
COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. MOST 
STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING 
TO RECEDE...ENDING THE FLOOD THREAT. THE FEW STREAMS AND CREEKS THAT 
WERE STILL RISING ARE NOT EXPECTED TO REACH FLOOD STAGE. IF FLOODING 
HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT 
AGENCY.

LAT...LON 3495 8092 3505 8103 3511 8094 3506 8089
      3501 8090 3497 8088

$$

07

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 7, 5:03 PM EDT, 3 hours 4 minutes earlier.

Area forecast discussion, Aug 7, 5:03 PM EDT, 3 hours 4 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
503 PM EDT TUE AUG 7 2012

.SYNOPSIS...
A STATIONARY FRONT WILL CONTINUE TO WEAKEN ACROSS THE AREA TONIGHT.
A COLD FRONT WILL PUSH ACROSS THE AREA FROM THE WEST LATE FRIDAY.
DRY HIGH PRESSURE WILL THEN BUILD BEHIND THE FRONT OVER THE WEEKEND
WEEKEND.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
430 PM UPDATE...NO NEED TO MAKE ANY SIGNFT CHANGES TO THE FCST.
TEMPS AND TD/S ARE REMAINING STEADY STATE IN A MOIST...YET STABLE
ENVIRONMENT. HIGH CHANCE AND LIKELY POPS STILL LOOK GOOD WITH
ONGOING CONVECTION AND SHOWER ACTIVITY.

AS OF 230 PM EDT...THE GROUND IS BECOMING INCREASINGLY SATURATED
ACROSS PARTS OF THE AREA AS FAIRLY WIDESPREAD 1 TO 2 INCH RAINFALL
AMOUNTS HAVE BEEN OBSERVED IN THE PAST 24 HOURS AT LOCATIONS IN NE
GA...UPSTATE SC...THE SW NC MTNS...AND THE CLT METRO AREA.
FORTUNATELY...PRECIPITATION RATES HAVE NOT BEEN SPECTACULAR THIS
AFTN DUE TO LIMITED INSTABILITY FROM MORNING RAINFALL AND LOW
CLOUDS. CONVECTION IS ALREADY GOING ALONG THE MTN RIDGES...AND
COVERAGE SHOULD INCREASE THROUGHOUT AS DIVERGENCE FROM THE RIGHT
ENTRANCE REGION OF AN UPPER JETLET BUILDS OVER THIS VERY MOIST
AIRMASS. THE UPPER SUPPORT WILL GRADUALLY MIGRATE EAST ACROSS THE
PIEDMONT THROUGH THE EVENING HOURS BEFORE SHIFTING OFF TO THE
COASTAL PLAIN OVERNIGHT THROUGH WED.

THE ANTECEDENT CONDITIONS CONTINUE TO MAKE ISOLATED FLOODING FROM
RUNOFF LOOK MORE LIKELY...BUT WE ARE ONCE AGAIN LEFT WITHOUT A
PRIMARY FOCUS AREA. THE 850 MB CIRCULATION CENTER OVER SRN AL TODAY
SHOULD STAY SUPPRESSED TO OUR S AND CONTRIBUTE LITTLE IN THE WAY OF
MOISTURE INFLUX OR LOW LEVEL UPSLOPE. SINCE THE AREAS OF BEST
FORCING STILL DO NOT LINE UP WITH THE LOWEST FFG GUIDANCE
AREAS...WILL ONCE AGAIN FOREGO A FLASH FLOOD WATCH BUT KEEP THE
MENTION IN THE HWO.

SOME GRADUAL DRYING WILL ARRIVE ALOFT FROM THE WEST OVERNIGHT. THIS
COULD PRODUCE SOME LOW CLOUDS AND FOG...ESPECIALLY ACROSS THE MTN
VALLEYS. THE FOG MAY BECOME DENSE AT TIMES. ONCE THE MORNING LOW
CLOUDS/FOG BURN OFF...INSTABILITY SHOULD RAMP UP QUICKLY AS THE
BOUNDARY LAYER REMAINS MOIST AND 850 TO 500 MB LAPSE RATES STEEPEN
QUICKLY FROM THE NW. LESS IN THE WAY OF TRIGGERS WILL BE FOUND ON
WED...BUT WEAK LOW LEVEL CONVERGENCE WILL EXIST AND DELTA THETA E
VALUES AROUND 30 K WED AFTN WILL MAKE FOR A DECENT WET MICROBURST
THREAT WITH ANY CONVECTION. MAX TEMPS WILL REBOUND TO NEAR NORMAL.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
AS OF 120 PM TUESDAY...DIURNAL CONVECTION SHOULD GRADUALLY DIMINISH
WED EVENING...GIVING WAY TO CLEARING SKIES AND NEAR-NORMAL MIN
TEMPS. BY THURSDAY AFTERNOON...THE ATMOSPHERE SHOULD ONCE AGAIN
BECOME MODERATELY...IF NOT STRONGLY UNSTABLE...ESPECIALLY ACROSS THE
SOUTHEAST ZONES. CONVECTION SHOULD FIRE BY MID-AFTERNOON IN THE
USUAL DIFFERENTIAL HEATING AREAS ALONG THE ESCARPMENT...AND NEAR
REMNANT BOUNDARY/SURFACE TROUGH W/IN INSTABILITY AXIS JUST
EAST/SOUTH OF THE AREA. WEAK SHEAR/FLOW IS EXPECTED TO RESULT IN
LIMITED COVERAGE...SO WE WILL JUST FEATURE A SHOTGUN LOW CHANCE POP
FOR NOW. OWING TO VERY DRY MID-LEVELS/FORECAST DCAPE APPROACHING
1000 J/KG THERE WILL BE A THREAT FOR ISOLATED PULSE SEVERE STORMS.

THURSDAY NIGHT INTO FRIDAY...HEIGHTS BEGIN TO FALL STRONGLY ACROSS
THE OHIO/MID MISS VALLEY...AS AN UNSEASONABLY STRONG AREA OF
VORTICITY DIGS INTO THE MIDWEST. A MOIST WAA REGIME DEVELOPS IN
RESPONSE...SO ISOLATED/WIDELY SCATTERED CONVECTION IS EXPECTED TO
PERSIST THROUGH THURSDAY NIGHT/EARLY FRIDAY. A STRONGLY FORCED COLD
FRONT WILL APPROACH AND BEGIN TO MOVE ACROSS THE AREA BY LATE IN THE
DAY FRIDAY. SPC HAS OUTLOOKED MUCH OF THE CWFA FOR DAY 4...WHICH
SEEMS REASONABLE IN LIGHT OF THE STRONG FORCING AND FORECAST
SOUNDING DEPICTION OF MODERATE CAPE VALUES. HOWEVER...THERE ARE SOME
ARGUMENTS AGAINST ORGANIZED SEVERE WEATHER FOR FRIDAY. ALTHOUGH THE
FLOW ALOFT IS SOMEWHAT STRONG FOR THIS TIME OF YEAR...THE
UNIDIRECTIONAL NATURE OF SHEAR PROFILES IS RESULTING IN A MAGNITUDE
OF ONLY 25 KT (AT BEST). ALSO...THERE MAY BE QUITE A BIT OF
CLOUDINESS AND SHOWER ACTIVITY IN THE MORNING...WHICH MAY MAKE IT
DIFFICULT TO ACHIEVE THE LEVEL OF INSTABILITY DEPICTED IN THE
SOUNDINGS. NEVERTHELESS...IT/S HARD TO BELIEVE THAT WE WON/T ESCAPE
SUCH AN UNSEASONABLY STRONG SYSTEM WITHOUT SEEING AT LEAST SOME
SEVERE WEATHER...SO THE THREAT WILL CONTINUE TO BE MENTIONED IN THE
HWO.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AS OF 145 PM TUESDAY...TROUGH AXIS AND COLD FRONT WILL PUSH ACROSS
THE AREA FRIDAY NIGHT INTO EARLY SATURDAY...WITH SOLID CHANCE/LIKELY
POPS LINGERING INTO FRIDAY EVENING. THE GLOBAL MODELS ARE IN DECENT
AGREEMENT IN STALLING THE FRONT SOUTH OF THE CWFA OVER THE
WEEKEND...WITH MUCH DRIER AIR ADVECTING INTO THE AREA. AFTER A
STORMY FRIDAY/FRI NIGHT...THE WEEKEND MAY TURN OUT TO BE QUITE
PLEASANT...WITH TEMPS AVERAGING A LITTLE BELOW NORMAL...AND POPS/
POSSIBLY RH AVERAGING MUCH BELOW NORMAL.

THE MODELS SUGGEST AIR MASS MODIFICATION WILL OCCUR QUICKLY IN THE
WAKE OF THE DEPARTING TROUGH...AS BERMUDA HIGH ALLOWS LOW LEVEL
MOISTURE/INSTABILITY TO RETURN. A MORE TYPICAL SUMMERTIME PATTERN
SHOULD YIELD MORE TYPICAL SUMMERTIME CONDITIONS...WITH ISOLATED TO
WIDELY SCATTERED DIURNAL CONVECTION EXPECTED ON DAYS 6/7. TEMPS WILL
ALSO LIKELY TO CLIMB TO NEAR NORMAL LEVELS BY THIS TIME.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
AT KCLT...COOL TEMPERATURES FROM MORNING CLOUDS AND RAINFALL HAVE
INHIBITED CONVECTION IN THE CLT VICINITY THUS FAR THIS AFTN.
HOWEVER...VISIBLE SATELLITE IMAGERY SHOWS SOME THINNING OF THE
CLOUDS SE OF THE TERMINAL...AND LAPS SFC CAPES ARE PICKING UP
RAPIDLY. THERE SHOULD BE ENOUGH FORCING IN THE VERY MOIST AIRMASS
FOR SOLID SHOWER COVERAGE THROUGH THE AFTN AND EARLY EVENING...WITH
TSRA BEST TIMED FROM 21Z TO 01Z. EXPECT MAINLY VFR CIGS EXCEPT UNDER
SHRA/TSRA...BUT WITH A TRANSITION BACK TO RESTRICTIONS DURING THE
OVERNIGHT HOURS. THERE IS CONSIDERABLE CONCERN THAT IFR OR LIFR
FOG/CLOUDS COULD DEVELOP BY DAYBREAK WED...BUT THE MOS HAS LARGELY
BACKED OFF THIS. WILL FEATURE MVFR CONDITIONS AS A COMPROMISE. AFTER
MORNING RESTRICTIONS LIFT AND SCATTER...EXPECT MAINLY LOWER VFR CIGS
WITH CONTINUED LOW CCL HEIGHTS.

ELSEWHERE...SHRA/TSRA COVERAGE IS INCREASING OVER THE MTNS THIS
AFTERNOON AS UPPER JETLET SUPPORT LINES UP OVER THE SRN
APPALACHIANS. MORNING LOW CLOUDS AND RAIN SHOWERS HAVE CURTAILED
INSTABILITY QUITE A BIT OVER THE FOOTHILLS AND PIEDMONT...BUT THESE
AREAS ARE STARTING TO RECOVER AS WELL AS TEMPS RISE INTO THE LOWER
80S THERE. WILL FEATURE TEMPO TSRA FIRST AT KAVL STARTING AT
19Z...THEN AT THE FOOTHILL SITES BY 21Z. EXPECT MAINLY VFR
CIGS...BUT WITH TEMPO MVFR THROUGHOUT. RESTRICTIONS WILL INCREASE
THIS EVENING THROUGH THE OVERNIGHT HOURS AS SOME DRYING WORKS IN
ALOFT OVER A VERY MOIST BOUNDARY LAYER. EXPECT A TRANSITION THROUGH
MVFR TO IFR OR LOWER DURING THE EARLY MORNING HOURS WED. SLOW
RECOVERY IS EXPECTED WITH MIXING/SCATTERING THROUGH WED MORNING WITH
ALL LOCATIONS VFR BY 15Z TO 16Z WED.

OUTLOOK...A RETURN TO A MORE NORMAL SUMMERTIME DIURNAL TSTM PATTERN
IS EXPECTED ON WED AND THU. A COLD FRONT WILL APROACH FROM THE NW ON
FRI TO INCREASE THUNDERSTORM COVERAGE THROUGH FRI NIGHT. DRIER HIGH
PRES WILL RETURN 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...JDL
NEAR TERM...HG/SBK
SHORT TERM...JDL
LONG TERM...JDL
AVIATION...HG
Hazardous weather outlook, Aug 7, 3:32 PM EDT, 4 hours 35 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
332 PM EDT TUE AUG 7 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-081945-
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-
332 PM EDT TUE AUG 7 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.

NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER
THE AREA THROUGH THIS EVENING. THESE THUNDERSTORMS WILL PRODUCE
LOCALLY HEAVY RAINFALL. ISOLATED FLASH FLOODING COULD RESULT WHERE
THUNDERSTORMS REPEATEDLY AFFECT THE SAME LOCATION. IN ADDITION...
CLOUD TO GROUND LIGHTNING STRIKES AND BRIEF GUSTY WINDS MAY
ACCOMPANY SOME OF THE STORMS.

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

A COLD FRONT IS EXPECTED TO APPROACH THE REGION FRIDAY INTO FRIDAY
NIGHT. STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE ASSOCIATED
WITH THE FRONT...WITH THE MAIN THREAT BEING DAMAGING WIND GUSTS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF DAMAGING
WINDS OR FLASH FLOODING TO OUR OFFICE.

LANE

In the hours before

Special weather statement, Aug 7, 4:34 PM EDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
434 PM EDT TUE AUG 7 2012

SCZ011-019-072115-
ABBEVILLE-GREENWOOD-
434 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN ABBEVILLE AND
WESTERN GREENWOOD COUNTIES THROUGH 515 PM EDT...

AT 429 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES WEST OF VERDERY...OR 6 MILES SOUTHEAST OF
ABBEVILLE. THIS STORM WAS NEARLY STATIONARY.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO VERDERY...
  GREENWOOD AND ABBEVILLE.

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3403 8233 3406 8234 3405 8237 3408 8245
      3431 8235 3420 8209 3400 8225

07
Special weather statement, Aug 7, 6:12 PM EDT, 1 hour 55 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
612 PM EDT TUE AUG 7 2012

NCZ502-072300-
GREATER CALDWELL-
612 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CALDWELL COUNTY
THROUGH 700 PM EDT...

AT 608 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CAJAH'S MOUNTAIN...OR 5 MILES SOUTH OF
LENOIR. THIS STORM WAS NEARLY STATIONARY.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HUDSON...

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3588 8133 3582 8134 3577 8142 3579 8145
      3578 8156 3583 8160 3582 8162 3586 8166
      3602 8150

07
Special weather statement, Aug 7, 6:30 PM EDT, 1 hour 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
630 PM EDT TUE AUG 7 2012

NCZ071-072315-
MECKLENBURG-
630 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MECKLENBURG COUNTY
THROUGH 715 PM EDT...

AT 628 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHEAST OF SOUTHPARK MALL...OR 8 MILES
SOUTH OF CENTER CITY CHARLOTTE...MOVING NORTH AT 5 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO I-77 AT
  I-85...CENTER CITY CHARLOTTE...SOUTHPARK MALL...EASTLAND MALL...
  PINEVILLE...MINT HILL AND MATTHEWS.

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3514 8064 3503 8077 3503 8079 3506 8090
      3510 8092 3534 8087 3528 8067 3527 8066
      3522 8058

07
Special weather statement, Aug 7, 6:40 PM EDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
640 PM EDT TUE AUG 7 2012

SCZ014-072330-
CHESTER-
640 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN CHESTER COUNTY THROUGH
730 PM EDT...

AT 636 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHEAST OF CORNWELL...OR 7 MILES
SOUTHEAST OF CHESTER. THIS STORM WAS NEARLY STATIONARY.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  RICHBURG...

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

LAT...LON 3455 8111 3455 8115 3470 8124 3483 8103
      3482 8102 3461 8088

07
Special weather statement, Aug 7, 7:23 PM EDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
723 PM EDT TUE AUG 7 2012

NCZ071-080015-
MECKLENBURG-
723 PM EDT TUE AUG 7 2012

...A STRONG THUNDERSTORM WILL AFFECT MECKLENBURG COUNTY THROUGH 815
PM EDT...

AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES WEST OF CENTER CITY CHARLOTTE...MOVING
NORTHEAST AT 5 MPH. ANOTHER STRONG THUNDERSTORM EAS MOVING NORTHEAST
FORM LAKE WYLIE.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO I-77 AT
  I-85...CENTER CITY CHARLOTTE...SOUTHPARK MALL...EASTLAND MALL...UNC
  CHARLOTTE...PINEVILLE...PAW CREEK...HUNTERSVILLE AND CROFT.

SMALL HAIL...WIND GUSTS OF 40 TO 50 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THIS STORM.

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3502 8084 3502 8087 3511 8094 3506 8103
      3515 8103 3517 8100 3525 8101 3535 8096
      3536 8092 3537 8095 3546 8090 3539 8074
      3535 8069 3530 8067

07

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 8:21 PM EDTSpecial Weather StatementGSPYork39 min
Aug 7, 9:18 PM EDTAreal Flood AdvisoryGSPChester, York2 hr
Aug 8, 12:17 AM EDTSpecial Weather StatementGSPPickens88 min
Aug 8, 1:58 PM EDTSevere Thunderstorm WarningGSPOconee, Pickens62 min
Aug 8, 2:13 PM EDTSpecial Weather StatementGSPGreenville47 min
Aug 8, 3:04 PM EDTSevere Thunderstorm WarningGSPOconee41 min
Aug 8, 3:09 PM EDTSpecial Weather StatementGSPPickens36 min
Aug 8, 3:20 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Pickens55 min
Aug 8, 3:50 PM EDTSevere Thunderstorm WarningGSPCherokee, York55 min
Aug 8, 4:09 PM EDTSpecial Weather StatementGSPOconee36 min
Aug 8, 4:14 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Oconee, Pickens47 min
Aug 8, 4:38 PM EDTSevere Thunderstorm WarningGSPCherokee, York67 min
Aug 8, 6:04 PM EDTSpecial Weather StatementGSPChester26 min
Aug 8, 6:19 PM EDTSevere Thunderstorm WarningGSPChester, Union56 min
Aug 8, 6:32 PM EDTSevere Thunderstorm WarningGSPLaurens, Union58 min

Nearby

Flash Flood Warnings in South Carolina, 2012Every flash flood 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.