Alert archive / North Carolina / Flash Flood Warnings in 2013

Flash Flood Warning 86, NWS Greenville-Spartanburg, SC

August 21, 2013Cleveland County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Aug 21, 2013, 2:28 PM EDT for Cleveland County, North Carolina. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 21, 2013, 2:28 PM EDT (18:28 UTC)
Expired
Aug 21, 2013, 5:30 PM EDT
In force
3 hr
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

County Cleveland County, NC

The radar

The Greer radar (KGSP), 81 km from the middle of the area, began a volume at 18:30 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 12:00Z, 6.5 hours before the alert went out and 168 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 2013-08-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1074 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 12:00Z on 2013-08-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 28 square meters per square second.193958Sfc1 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
1074 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
28 m²/s²
0-3 km storm-relative helicity
36 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.

071 
WGUS52 KGSP 211828
FFWGSP
NCC045-212130-
/O.NEW.KGSP.FF.W.0086.130821T1828Z-130821T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
228 PM EDT WED AUG 21 2013

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CLEVELAND COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 530 PM EDT

* AT 226 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. DOPPLER RADAR ESTIMATED NEARLY THREE INCHES OF RAIN
  HAD FALLEN JUST EAST OF SHELBY IN THE BUFFALO CREEK DRAINAGE.

* ADDITIONAL HEAVY RAIN IS LIKELY TO DEVELOP ACROSS THE WARNED
  AREA...INCLUDING WITHIN THE CITY OF SHELBY. RUNOFF FROM
  EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.
  SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...            
  SHELBY...BOILING SPRINGS AND EARL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN
AROUND... DONT DROWN.

PLEASE REPORT HIGH WATER...FLOODING...LANDSLIDES OR OTHER SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG BY
CALLING TOLL FREE...1...800...2 6 7...8 1 0 1...OR BY POSTING ON OUR
FACEBOOK PAGE...OR TWEET IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD
DESCRIBE THE EVENT AND THE SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3544 8146 3541 8145 3536 8141 3533 8136
      3531 8137 3518 8153 3518 8176 3518 8177
      3533 8168 3546 8148

$$

CSH
2 follow-up statements
376 
WGUS72 KGSP 211856
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
256 PM EDT WED AUG 21 2013

NCC045-212130-
/O.CON.KGSP.FF.W.0086.000000T0000Z-130821T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLEVELAND NC-
256 PM EDT WED AUG 21 2013

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR CLEVELAND COUNTY UNTIL
530 PM EDT...

AT 253 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
DOPPLER RADAR ESTIMATED TWO TO FOUR INCHES OF RAIN HAD FALLEN
ACROSS THE EAST SIDE OF SHELBY. 

ON THE EAST SIDE OF SHELBY...LOW LYING AREAS NEAR BUFFALO AND MUDDY 
FORK CREEKS MAY FLOOD...ESPECIALLY ON OAKGROVE ROAD AND OTHER 
SECONDARY ROADS. IN ADDITION...DEKALB...NORTH POST...AND KINGS ROADS
MAY FLOOD. 

ELSEWHERE IN THE CITY OF SHELBY...LOW LYING AREAS ALONG HICKORY CREEK 
COULD FLOOD ESPECIALLY ON WYKE ROAD AND EAST DIXION BLVD. LOW LYING 
AREAS NEAR TRIBUTARY 2 OF THE FIRST BROAD MAY FLOOD ESPECIALLY ON 
KINGSBURY STREET. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

PLEASE REPORT HIGH WATER...FLOODING...LANDSLIDES OR OTHER SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG BY
CALLING TOLL FREE...1...800...2 6 7...8 1 0 1...OR BY POSTING ON OUR
FACEBOOK PAGE...OR TWEET IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD
DESCRIBE THE EVENT AND THE SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3546 8148 3536 8141 3533 8136 3531 8137
      3518 8153 3518 8170 3524 8174 3533 8168

$$

CSH
210 
WGUS72 KGSP 212007
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
407 PM EDT WED AUG 21 2013

NCC045-212021-
/O.CAN.KGSP.FF.W.0086.000000T0000Z-130821T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CLEVELAND NC-
407 PM EDT WED AUG 21 2013

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CLEVELAND COUNTY IS
CANCELLED...

DESPITE RADAR RAINFALL ESTIMATES OF AROUND 4.5 INCHES ACROSS THE FAR 
EAST SIDE OF SHELBY AND NEAR MOSS LAKE...NO REPORTS OF FLOODING HAVE 
BEEN RECEIVED. RAINFALL HAS ENDED ACROSS THE WARNED AREA AND ANY 
LINGERING AREAS OF HIGH WATER WILL RECEDE THROUGH LATE AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PLEASE REPORT HIGH WATER...FLOODING...LANDSLIDES OR OTHER SEVERE
WEATHER TO THE NATIONAL WEATHER SERVICE GREENVILLE SPARTANBURG BY
CALLING TOLL FREE...1...800...2 6 7...8 1 0 1...OR BY POSTING ON OUR
FACEBOOK PAGE...OR TWEET IT USING HASHTAG NWSGSP. YOUR MESSAGE SHOULD
DESCRIBE THE EVENT AND THE SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3546 8148 3536 8141 3533 8136 3531 8137
      3518 8153 3518 8170 3524 8174 3533 8168

$$

CSH

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 21, 2:02 PM EDT, 26 minutes earlier.

Area forecast discussion, Aug 21, 2:02 PM EDT, 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
202 PM EDT WED AUG 21 2013

.SYNOPSIS...
A STATIONARY FRONT WILL LINGER ALONG THE COAST INTO THURSDAY THEN
DISSIPATE.  A COLD FRONT WILL CROSS THE REGION FROM THE NORTH FRIDAY
NIGHT AND SATURDAY...USHERING IN DRIER WEATHER FOR THE WEEKEND.

&&

.NEAR TERM /THROUGH TONIGHT/...
AS OF 155 PM...NUMEROUS COVERAGE OF CONVECTION IS OCCURRING ALONG
WHAT APPEARS TO BE A DIFFERENTIAL HEATING BOUNDARY THAT ROUGHLY
PARALLELS I-85 FROM THE GREENVILLE/SPARTANBURG AREA TO THE WESTERN
NC PIEDMONT. A FEW OF THESE CELLS HAVE BECOME SURPRISINGLY TALL...
BUT NO SEVERE STORMS HAVE APPARENTLY OCCURRED YET...AND IT APPEARS A
55 DBZ CORE TO AT LEAST 26 KFT WILL BE NECESSARY FOR SEVERE WEATHER.
THEREFORE...THIS THREAT REMAINS LOW. THE PRIMARY CONCERN WILL
CONTINUE TO BE HEAVY RAIN...AS CELL MERGERS AND GENERALLY SLOW
MOVING CELLS COULD LEAD TO SOME FLASH FLOODING...MAINLY OVER URBAN
AREAS ALONG THE I-85 CORRIDOR. POPS HAVE BEEN INCREASED TO 60-70
PERCENT ACROSS THE MAJORITY OF THE FORECAST AREA THROUGH THE
REMAINDER OF THE AFTERNOON.

AS OF 1035 AM...AN AREA OF SHOWERS WITH A FEW EMBEDDED THUNDERSTORMS
HAS BEEN BLOSSOMING OVER NORTHEAST GEORGIA AND EXTREME SOUTHWEST NC
OVER THE PAST COUPLE OF HOURS. THIS IS LIKELY THE RESULT OF AN AREA
OF UPPER DIVERGENCE DOWNSTREAM OF THE OHIO VALLEY UPPER LOW...
ASSISTED BY S/SW LOW LEVEL UPSLOPE FLOW. IT APPEARS THAT THESE
FACTORS WILL CONTINUE TO BE THE PRIMARY SOURCE OF LIFT THROUGH THE
DAY...AND 60-70 POPS WILL BE FOCUSED IN THESE AND SURROUNDING
AREAS...ALLOWING FOR SOME EASTWARD MOVEMENT. WIDESPREAD LOW CLOUDS
COVER THE AREA THIS MORNING...TOPPED BY A PERSISTENT CIRRUS SHIELD
THAT COVERS ALL BUT THE SOUTHERN/SOUTHEAST TIER OF ZONES. WITH THAT
IN MIND...IT DOES NOT APPEAR THAT WE/RE GOING TO SEE MUCH IN THE WAY
OF INSTABILITY THIS AFTERNOON. THE ONLY EXCEPTION MAY BE IN THE
AFOREMENTIONED AREAS WHERE THE CIRRUS IS NOT AS DENSE. IF THE LOW
CLOUDS CAN BURN OFF QUICKLY ENOUGH...A LITTLE SUN/HEATING MAY RESULT
IN MODERATE INSTABILITY...WHICH WOULD LIKELY SUPPORT SOLID COVERAGE
OF CONVECTION IN LIGHT OF THE EXTREMELY MOIST ENVIRONMENT. THUS
FAR...RAINFALL RATES HAVE NOT BEEN ESPECIALLY HIGH...AND WITHOUT
SIGNIFICANT ADDITIONAL DESTABILIZATION...THIS MAY NOT CHANGE MUCH.
HOWEVER...UPSLOPE FLOW MAY SUPPORT AN EXTENDED PERIOD OF RELATIVELY
HEAVY RAINFALL...AND POSSIBLY SOME HYDRO CONCERNS ACROSS NORTHEAST
GA/SOUTHWEST NC.

AS OF DAYBREAK...AN AREA OF LIGHT TO MODERATE RAIN WITH EMBEDDED
THUNDERSTORMS CONTINUES TO LIFT SLOWLY N ALONG THE BLUE RIDGE...WITH
A FEW MORE SHOWERS DEVELOPING IN THE UPSLOPE FLOW OVER UPSTATE SC.
IF ALL GOES ACCORDING TO PLAN...THE SHOWERS WILL GENERALLY REMAIN
NEAR THE BLUE RIDGE THROUGH MID MORNING. IT WOULD APPEAR AS IF THE
ATMOSPHERE FINALLY GOT THE MEMO SENT BY THE MODEL GUIDANCE IN THAT
UPPER FORCING ACTING ON DEEP MOISTURE SHOULD RESULT IN PRECIP
DEVELOPMENT...UNLIKE THE LAST TWO DAYS THAT WERE LARGELY PRECIP-FREE
IN SPITE OF MODEL GUIDANCE THAT SUGGESTED OTHERWISE. THE OPERATIONAL
MODELS SHOW THAT UPPER DIVERGENCE WILL REMAIN IN PLACE THROUGH THE
DAY. LOW LEVEL SE TO S UPSLOPE FLOW WILL PROVIDE LOW LEVEL FORCING
BUT SHOULD VEER MORE SW LATE IN THE DAY. THAT SHOULD IN THEORY KEEP
DECENT SHOWER COVERAGE OVER AT LEAST THE MTNS AND FOOTHILLS...SO THE
HIGHEST POP WILL BE CONCENTRATED THERE...WITH A CHANCE ELSEWHERE
OVER THE PIEDMONT. PW REMAINS HIGH AND STORM MOTION SHOULD BE
SLOW...WHICH SUGGESTS A CONTINUED FLASH FLOOD THREAT...BUT
CONFIDENCE IN THE LOCATION OF THE MOST RAIN IS WAY TOO LOW TO
CONTEMPLATE A WATCH. TEMPS SHOULD REMAIN BELOW NORMAL OWING TO
PRECIP COVERAGE AND EXTENSIVE CLOUDINESS. THE SHOWERS AND STORMS
SHOULD LINGER INTO THE EVENING BEFORE TAPERING OFF DURING THE EARLY
MORNING HOURS ON THURSDAY. AN 850MB TROF WILL CROSS THE REGION AFTER
MIDNIGHT AND VEER THE FLOW AROUND TO A LESS FAVORABLE W DIRECTION.
TEMPS WILL REMAIN MILD.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
AS OF 245 AM WEDNESDAY...MODELS HAVE TRENDED A BIT FASTER WITH THE
PASSAGE OF THE POSITIVELY-TILTED UPR TROF ON THURSDAY...PLACING THE
CWFA ON THE NVA SIDE OF THE SYSTEM BY PEAK HEATING. IN ADDITION TO
THAT...LLVL FLOW WILL BACK TO MORE OF A WLY DIRECTION...WITH PWATS
FALLING TO LESS THAN 100% OF NORMAL ACRS THE ENTIRE CWFA...EXCEPT
FOR ALONG THE BLUE RIDGE WHERE SOME CONVERGENCE WILL OCCUR. STILL
SHUD SEE AT LEAST SCT CONVECTION HOWEVER...AS SBCAPE OF 1000-2000
J/KG ARE EXPECTED. THE 0-6 KM BULK SHEAR WILL REMAIN WEAK (20-25 KTS
AT MOST ACRS NC ZONES)...BUT SOME MID LVL DRY AIR WITH DECENT INSTBY
WILL PRODUCE A SMALL SEVERE TSTM THREAT. TEMPS WILL BE ABLE TO PUSH
INTO THE MID 80S EAST OF THE MTNS THANKS TO SOME DOWNSLOPE AND MORE
SUNSHINE THAN WE HAVE SEEN IN MANY DAYS.

THURSDAY NIGHT THRU FRIDAY NIGHT...ANOTHER SHORTWAVE TROF WILL DIVE
INTO THE GREAT LAKES TO THE MID ATLANTIC STATES...PUSHING A COLD
FRONT THRU THE OH VLY AND CENTRAL APPALACHIANS. GUIDANCE KEEPS THE
BETTER INSTBY TO OUR NORTH ON FRIDAY...BUT STILL EXPECT AT LEAST
ISOLD TO WIDELY SCATTERED SHWRS/TSTMS. TEMPS WILL BE THE WARMEST WE
HAVE HAD IN OVER A WEEK...NEAR LATE AUGUST NORMALS. MIN TEMPS WILL
BE NEAR OR SLIGHTLY ABOVE NORMAL.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
AS OF 315 AM WEDNESDAY...MODELS STILL IN GOOD AGREEMENT ON A
BACKDOOR COLD FRONT PUSHING THRU THE AREA FRIDAY NIGHT INTO
SATURDAY...USHERING IN DRY CONTINENTAL AIR MASS...AS SFC HIGH PRES
BUILDS INTO THE GREAT LAKES. SOME POPS LINGER ON SATURDAY...BEFORE A
BETTER PUSH OF LLVL DRY AIR WORKS IN ON SUNDAY. TEMPS WILL BE BELOW
NORMAL UNDER THE HIGH...BUT MODERATE TO NEAR NORMAL EARLY NEXT
WEEK...AS THE HIGH SETTLES OVER THE SOUTHEAST STATES.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
AT KCLT/KGMU/KGSP...CONVECTION HAS BEEN ALL AROUND THE TERMINALS SO
FAR THIS AFTERNOON...BUT NO DIRECT HIT AS OF YET. NEVERTHELESS...
CONVECTION WILL REMAIN IN THE VICINITY FOR THE NEXT 2-4 HOURS...AND
ADDITIONAL DEVELOPMENT IN THE UNSTABLE AIR SOUTHWEST OF THE TERMINAL
WILL IS  LIKELY. THEREFORE...WILL CONTINUE A TEMPO FOR 2SM/TSRA
THROUGH 21Z OR 22Z...WITH SHOWERS THEREAFTER. CONVECTION SHOULD
BEGIN TO WIND DOWN THIS EVENING...BUT CAN/T RULE OUT AN ADDITIONAL
TS OR TWO THROUGH MID-EVENING...ESP NEAR KCLT. DEVELOPING W/SW FLOW
LATE TONIGHT IS EXPECTED TO RESULT IN LOWER CHANCES OF LOW CIGS THAN
WE/VE SEEN RECENTLY. HOWEVER... WITH RAIN FALLING THIS PM NEAR THE
TERMINALS...CANNOT AT ALL RULE OUT FOG/LOW STRATUS BY DAYBREAK.

ELSEWHERE...CONVECTION WAS MOVING AWAY FROM KAND AND KAVL AS OF
1745Z. CONSIDERING THE STABLE AIR NEAR KAVL...I/M QUITE CONFIDENT
THAT TS WILL STAY AWAY FROM THE TERMINAL FOR THE REMAINDER OF THE
AFTERNOON...AND HAVE OMITTED ANYTHING OTHER THAN SHRA FROM THE TAF.
AT KAND...I/M NOT AS CONFIDENT...AS THE AIR MASS TO THE SW IS STILL
FAIRLY UNSTABLE...SO A TEMPO FOR TSRA WILL BE CARRIED BTW 19 AND
21Z. MEANWHILE...CONVECTION NEAR THE NC/SC BORDER WILL CONTINUE TO
LIFT NORTHEAST TOWARD KHKY OVER THE NEXT SEVERAL HOURS. INSTABILITY
SHOULD BE SUFFICIENT TO ALLOW THIS ACTIVITY TO HOLD TOGETHER...AND A
TEMPO FOR TSRA WILL BE CARRIED AFTER 20Z. DEVELOPING W/SW FLOW LATE
TONIGHT IS EXPECTED TO RESULT IN LOWER CHANCES OF LOW CIGS THAN
WE/VE SEEN RECENTLY. THE ONLY EXCEPTION WILL BE THE EXPECTATION OF
FOG/LOW STRATUS IN THE MTN VALLEYS. HOWEVER...WITH RAIN FALLING THIS
PM NEAR THE TERMINALS...CANNOT AT ALL RULE OUT FOG/LOW STRATUS BY
DAYBREAK AT THE OTHER TERMINALS.

OUTLOOK...A DRIER PATTERN IS EXPECTED FOR LATE WEEK...AS HIGH
PRESSURE GRADUALLY BUILDS IN FROM THE NORTH. LINGERING MOISTURE MAY
RESULT IN MORNING RESTRICTIONS IN LOW CLOUDS AND FOG...MAINLY IN THE
MTN VALLEYS...AND WIDELY SCATTERED THUNDERSTORMS THURSDAY AND FRIDAY
AFTERNOON. CHANCES FOR CONVECTION AND AM RESTRICTIONS MAY DIMINISH
OVER THE WEEKEND.

CONFIDENCE TABLE...

            18-24Z        00-06Z        06-12Z        12-18Z
KCLT       HIGH  85%     HIGH 100%     HIGH 100%     HIGH  95%
KGSP       HIGH  89%     HIGH 100%     HIGH  98%     HIGH 100%
KAVL       HIGH  88%     HIGH  95%     MED   78%     MED   67%
KHKY       MED   71%     HIGH  95%     HIGH  87%     HIGH  95%
KGMU       HIGH  88%     HIGH 100%     HIGH  98%     HIGH  95%
KAND       HIGH  99%     HIGH 100%     HIGH  94%     MED   75%

THE PERCENTAGE REFLECTS THE NUMBER OF GUIDANCE MEMBERS AGREEING
WITH THE SCHEDULED TAF ISSUANCE FLIGHT RULE CATEGORY. COMPLETE
HOURLY EXPERIMENTAL AVIATION FORECAST CONSISTENCY TABLES AND ENSEMBLE
FORECASTS ARE AVAILABLE AT THE FOLLOWING LINK: (MUST BE LOWER CASE)

WWW.WEATHER.GOV/GSP/AVIATION_TABLES

&&

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

&&

SYNOPSIS...DEO
NEAR TERM...JDL/PM
SHORT TERM...ARK
LONG TERM...ARK
AVIATION...JDL
Hazardous weather outlook, Aug 21, 5:44 AM EDT, 8 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
544 AM EDT WED AUG 21 2013

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-220945-
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-
544 AM EDT WED AUG 21 2013

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED TO NUMEROUS SHOWERS AND A FEW THUNDERSTORMS ARE EXPECTED
TO DEVELOP ACROSS THE REGION THIS AFTERNOON INTO THIS EVENING. THE
MAIN THREATS WILL BE CLOUD TO GROUND LIGHTNING AND HEAVY RAIN WITH
LOCALIZED FLOODING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

ARK

In the hours before

Special weather statement, Aug 21, 12:23 PM EDT, 2 hours 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1223 PM EDT WED AUG 21 2013

SCZ010-211645-
ANDERSON-
1223 PM EDT WED AUG 21 2013

...A STRONG THUNDERSTORM WILL AFFECT ANDERSON COUNTY THROUGH 1245 PM
EDT...

AT 1218 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR ANDERSON...MOVING NORTHEAST AT 5 MPH.

PEOPLE IN ANDERSON COUNTY...INCLUDING THE FOLLOWING LOCATION...

ANDERSON...

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 UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3448 8281 3478 8246 3475 8245 3466 8246
      3464 8245 3462 8245 3460 8243 3456 8242
      3453 8240 3435 8266

NED
Special weather statement, Aug 21, 12:49 PM EDT, 1 hour 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1249 PM EDT WED AUG 21 2013

SCZ010-211715-
ANDERSON-
1249 PM EDT WED AUG 21 2013

...A ROUND OF TORRENTIAL RAINFALL WILL AFFECT EASTERN ANDERSON
COUNTY THROUGH 115 PM EDT...

AT 1242 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF HEAVY THUNDERSTORMS FROM JUST WEST OF POWDERSVILLE TO
THE EAST SIDE OF ANDERSON MOVING EAST AT 25 MPH.

* LOCATIONS TO BE AFFECTED INCLUDE BUT ARE NOT LIMITED TO
WILLIAMSTON...POWDERSVILLE...PIEDMONT...PELZER...BELTON AND
ANDERSON.

TORRENTIAL RAIN IS EXPECTED WITH THESE STORMS.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3474 8263 3482 8248 3477 8245 3475 8246
      3468 8245 3467 8247 3458 8242 3456 8242
      3454 8239 3453 8239 3445 8266

CSH
Special weather statement, Aug 21, 2:15 PM EDT, 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
215 PM EDT WED AUG 21 2013

SCZ008-211900-
CHEROKEE-
215 PM EDT WED AUG 21 2013

...A ROUND OF TORRENTIAL RAIN WILL AFFECT CHEROKEE COUNTY THROUGH
300 PM EDT...

AT 213 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF THUNDERSTORMS WITH TORRENTIAL RAINFALL POISED TO OVERSPREAD
GREATER GAFFNEY AND THE I-85 CORRIDOR.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  THICKETTY...SARATT...GAFFNEY AND BLACKSBURG.

TORRENTIAL RAIN IS EXPECTED WITH THESE STORMS.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3487 8149 3489 8158 3487 8162 3490 8165
      3492 8173 3504 8181 3518 8175 3517 8155
      3509 8141 3505 8142 3505 8145 3503 8149
      3498 8148 3494 8149 3484 8146

CSH

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 21, 2:12 PM EDTAreal Flood AdvisoryGSPCleveland78 min
Aug 21, 4:57 PM EDTSpecial Weather StatementGSPUnion48 min

Nearby

Flash Flood Warnings in North Carolina, 2013Every flash flood warning in 2013

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.