Alert archive / South Carolina / Flash Flood Warnings in 2014
Flash Flood Warning 41, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this flash flood warning at Sep 19, 2014, 2:00 AM EDT for Chester County, South 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 counties it named.
The facts
- Issued
- Sep 19, 2014, 2:00 AM EDT (06:00 UTC)
- Expired
- Sep 19, 2014, 5:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Flood severity
- None
County Chester County, SC
The radar
The Columbia radar (KCAE), 83 km from the middle of the area, began a volume at 06:00 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.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 6.0 hours before the alert went out and 192 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.
- Mixed-layer CAPE
- 162 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1186 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Sep 19, 1:14 AM EDT, 46 minutes earlier.
Area forecast discussion, Sep 19, 1:14 AM EDT, 46 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
114 AM EDT FRI SEP 19 2014
.SYNOPSIS...
A WEAK RIDGE OF HIGH PRESSURE WILL LINGER ATOP THE REGION INTO
SATURDAY. COOL TEMPERATURES WILL RETURN TO NORMAL READINGS ON SUNDAY
AHEAD OF A COLD FRONT WHICH IS FORECAST TO PASS THROUGH ON MONDAY.
&&
.NEAR TERM /THROUGH TODAY/...
0515 UTC UPDATE...POPS AND QPF WERE RAISED TO ACCOUNT FOR
PRECIPIATION EAST OF CHARLOTTE...AND NEAR THE GA/SC/NC BORDER. SKY
COVER WAS UPDATED FROM SATELLITE IMAGERY...YIELDING SOME BREAKS IN
IN THE NORTH AND SOUTH.
AS OF 930 PM...KGSP RADAR CONTINUES TO SHOW SOME SHOWER ACTIVITY
ACROSS THE FCST AREA...WITH THE BEST COVERAGE ALONG THE EASTERN
FRINGE OF THE CLT METRO AREA. WILL BUMP THE PRECIP PROBABILITY UP TO
THE CHANCE RANGE TO ACCOUNT FOR THE TREND. TEMPS ARE IN GOOD SHAPE.
REMAINDER OF PREVIOUS DISCUSSION...
HIGH PRESSURE CONTINUES TO BUILD INTO THE AREA FROM THE NORTH
OVERNIGHT. THIS WILL LEAD TO AN INCREASE LOW LEVEL ELY TO SELY FLOW.
COPIOUS LOW LEVEL MOISTURE WILL REMAIN ACROSS THE AREA AS WELL.
THEREFORE...EXPECT A RETURN OF LOW CLOUDS ACROSS THE AREA. ALTHOUGH
OVERALL PRECIP COVERAGE WILL DECREASE AFTER MIDNIGHT...THE INCREASED
UPSLOPE FLOW AND WEAK ISENTROPIC LIFT...WILL KEEP AT LEAST ISOLATED
SHRA ALONG THE BLUE RIDGE...ALONG WITH PATCHY DRIZZLE ACROSS MUCH OF
THE AREA. PATCHY FOG...WITH ISOLATED DENSE FOG...WILL DEVELOP AGAIN
AS WELL. LOWS WILL BE A LITTLE ABOVE NORMAL.
EXPECT THE LOW CLOUDS TO ONLY SLOWLY LIFT AND/OR SCATTER OUT FRIDAY
GIVEN THE CONTINUED E TO SE LOW LEVEL FLOW. THE ISOLATED SHRA AND
PATCHY DRIZZLE SHUD END BE MID MORNING...BEFORE PRECIP CHC INCREASES
FOR THE AFTERNOON. THERE WILL BE QUITE A BIT OF ELEVATED INSTABILITY
AS MID LEVELS COOL WITH THE DEVELOPING TROF OVER THE SE. HOWEVER...
ANY FORCING WILL BE WEAKER AS WILL THE INSTABILITY. THEREFORE...
EXPECT PRECIP COVERAGE TO BE ISOLATED OUTSIDE OF THE MTNS AND SCT
OVER THE MTNS WHERE DIFFERENTIAL HEATING AND SE FLOW WILL BE
STRONGER. HIGHS WILL BE A FEW DEGREES BELOW NORMAL...UNLESS CLOUDS
SCATTER OUT SOONER...WHICH WILL MAKE HIGHS CLOSER TO NORMAL.
&&
.SHORT TERM /TONIGHT THROUGH SUNDAY/...
AS OF 230 PM EDT THURSDAY...THE SHORT TERM FORECAST PERIOD
INITIALIZES FRIDAY EVENING WITH THE MEAN UPPER PATTERN FEATURING A
TROF EJECTING OUT TO SEA OVER NOVA SCOTIA WHILE NEARLY ZONAL FLOW
PREVAILS WESTWARD INTO THE GREAT LAKES REGION. A SECOND UPPER TROF
WILL BE AMPLIFYING AS IT EJECTS OUT OF SOUTH CENTRAL CANADA WITH A
COLD FRONT EXTENDING SOUTHWARD INTO THE NORTHERN PLAINS STATES.
CLOSER TO HOME...SURFACE RIDGING CENTERED OVER NEW ENGLAND WILL HAVE
WEDGED SOUTHWARD INTO NORTHEAST GA AND THE WESTERN CAROLINAS IN AN
EARLY FALL CAD REGIME. EASTERLY UPSLOPE FLOW ALONG THE BLUE RIDGE
COMBINED WITH RATHER UNIMPRESSIVE ISENTROPIC UPGLIDE WILL WARRANT
MENTIONABLE POPS AT FORECAST INITIALIZATION. THUS FOR FRIDAY
EVENING THE FORECAST FEATURES CHANCE LEVEL POPS ACROSS THE BLUE
RIDGE WITH ONLY SLIGHT CHANCE LEVELS RESIDING JUST EAST OF THE
FOOTHILLS.
POPS TAPER THROUGH THE OVERNIGHT LEADING TO A MOSTLY DRY FORECAST
FOR SATURDAY AS ABOVE MENTIONED CAD WEDGE BEGINS TO RETREAT YIELDING
ONLY SLIGHT CHANCE POPS ACROSS THE SOUTHERN TIER OF THE FORECAST
AREA WHERE BEST MOISTURE WILL RESIDE. EXPECTING FORECAST TO REMAIN
DRY THROUGH THE OVERNIGHT INTO SUNDAY BEFORE POPS RAMP UP AHEAD OF
APPROACHING ABOVE MENTIONED UPPER TROF AND ASSOCIATED COLD FRONT.
SOUTHERLY MOISTURE ADVECTION WILL GRADUALLY RESUME ON SUNDAY HOWEVER
SHOULD NOT BE SUFFICIENT ENOUGH TO WARRANT EVEN ISOLATED/SCATTERED
PREFRONTAL CONVECTION. THERE REMAINS SOME MODEL DISCONTINUITY
REGARDING THE TIMING OF THE INITIAL FRONTAL INTRUSION ON SUNDAY
EVENING WITH THE SLOWER NAM BEING THE OUTLIER. THE GLOBAL GFS/ECMWF
ARE APPROX 6 HOURS FASTER WITH THE FRONTAL CONVECTION SLIDING INTO
THE NC MOUNTAINS BY THE END OF THE FORECAST CYCLE. THEREFORE CHANCE
LEVEL POPS ARE FEATURED ALONG THE TN LINE WITH ONLY SLIGHT CHANCE
POPS RESIDING ACROSS THE REMAINDER OF THE WESTERN NC MOUNTAINS. AS
FOR THE PIEDMONT REGIONS OF NC/SC...EXPECTING A DRY AND FAIRLY NICE
SUNDAY. TEMPERATURES THROUGH THE SHORT TERM PERIOD WILL GRADUALLY
MODERATE TO AT OR JUST ABOVE NORMAL LEVELS AS THE LOW LEVEL FLOW
VEERS SOUTHERLY BY SUNDAY.
&&
.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
AS OF 1240 PM THU...LESS WARM AIR WILL ADVECT INTO THE REGION ON
MONDAY COINCIDENT WITH THE PASSAGE OF A MOISTURE LACKING COLD FRONT.
THERE REMAINS THE POSSIBILITY OF A ROUND OF MAINLY NC MTN SHOWERS
SUNDAY NIGHT AND MAYBE A FEW SHOWERS EAST OF THE BLUE SOMETIME ON
MONDAY. THE INFLUX OF POST FRONTAL DRIER AIR AND ENCROACHING SFC
RIDGE WILL RESULT IN DRY AND COOLER WX MONDAY NIGHT AND TUE AM MINS
ARE PROGGED TO BE ABT 5 DEG F BELOW CLIMO.
THE CWFA LOOKS TO BE WITHIN THE COOL CYCLONIC FLOW CLOSE TO THE
PERIPHERY OF THE EASTERN CONUS L/WV TROUGH ON TUESDAY WITH MODERATELY
STRONG SFC RIDGING BUILDING DOWN THE EASTERN SLOPES WEDNESDAY INTO
THURSDAY. WITHIN THIS DRY AND COOL PATTERN...TEMPERATURES SHOULD
AVERAGE 5 TO 8 DEG F BELOW CLIMO EACH DAY.
&&
.AVIATION /05Z FRIDAY THROUGH TUESDAY/...
AT KCLT...CONVECTION TO THE SOUTHEAST WILL BE MONITORED FOR ANY
DEVELOPMENT TO THE NW AND CLOSER TO THE FIELD. GUIDANCE FAVORS MVFR
VSBY BEFORE DAWN...AND A BRIEF MVFR CIG. IF CONVECTION TO THE
SOUTHEAST AND SPREAD TO THE FIELD...MORE DIRE RESTRICTIONS WOULD BE
POSSIBLE. LIGHT ENE WINDS ARE EXPECTED TO PERSIST. LIGHT ENE WINDS
ARE EXPECTED TO PERSIST. CONVECTIVE CHANCES THIS AFTERNOON ARE TOO
SMALL TO MENTION.
ELSEWHERE...GUIDANCE FAVORS CIGS AND MVFR VSBY BY DAYBREAK...EXCEPT
AT KAVL IFR TO LIFR IS EXPECTED. CONVECTION SW OF KAVL AT THIS TIME
IS NOT MOVING VERY MUCH...AND IS NOT EXPECTED TO REACH THE FIELD.
CONVECTION THIS AFTERNOON IS EXPECTED TO BE AT AT MAXIMUMS BETWEEN
KAVL AND THE FOOTHILL SITES...BUT CHANCES ARE TOO LOW TO MENTION AT
TAF SITES. NE WINDS AT FOOTHILLS SITES WILL VEER SE TODAY...WHILE
KAVL WINDS VEER FROM N TO S.
OUTLOOK...THE POTENTIAL FOR LATE NIGHT/MORNING FOG/STRATUS WILL
PERSIST INTO THE EARLY PART OF THE WEEKEND...ESPECIALLY IN THE MTN
VALLEYS. CONDITIONS MAY FINALLY DRY OUT FOR THE LATTER PART OF THE
WEEKEND. A COLD FRONT MAY BRING INCREASING CHANCES FOR SHOWERS/TSTMS
EARLY NEXT WEEK.
CONFIDENCE TABLE...
05-11Z 11-17Z 17-23Z 23-05Z
KCLT HIGH 92% HIGH 94% HIGH 100% HIGH 100%
KGSP HIGH 83% HIGH 83% HIGH 100% HIGH 100%
KAVL HIGH 82% MED 78% HIGH 98% HIGH 93%
KHKY HIGH 89% HIGH 80% HIGH 98% HIGH 100%
KGMU HIGH 83% HIGH 86% HIGH 100% HIGH 100%
KAND HIGH 98% HIGH 83% HIGH 100% HIGH 100%
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...CSH
NEAR TERM...JAT/PM
SHORT TERM...CDG/PM
LONG TERM...CSH
AVIATION...JATHazardous weather outlook, Sep 18, 11:46 PM EDT, 2 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 1146 PM EDT THU SEP 18 2014 GAZ010-017-018-026-028-029-NCZ062>065-068-507>510-SCZ001>008-010>013- 019-200400- RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-MACON-SOUTHERN JACKSON- TRANSYLVANIA-HENDERSON-CLEVELAND-RUTHERFORD MOUNTAINS- GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS- PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE- GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-ANDERSON- ABBEVILLE-LAURENS-UNION SC-GREENWOOD- 1146 PM EDT THU SEP 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORMS WILL CONTINUE OVERNIGHT. THE PRIMARY THREATS WITH ANY OF THESE THUNDERSTORMS WILL BE BRIEF HEAVY RAINFALL AND CLOUD TO GROUND LIGHTNING. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. NCZ033-035>037-048>053-056-058-059-069-501>506-200400- AVERY-ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD- BUNCOMBE-CATAWBA-GRAHAM-NORTHERN JACKSON-LINCOLN-CALDWELL MOUNTAINS- GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS- EASTERN MCDOWELL- 1146 PM EDT THU SEP 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND WESTERN NORTH CAROLINA. .DAY ONE...TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. NCZ057-070>072-082-SCZ009-014-200400- ROWAN-GASTON-MECKLENBURG-CABARRUS-UNION NC-YORK-CHESTER- 1146 PM EDT THU SEP 18 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TONIGHT. THUNDERSTORMS WILL CONTINUE OVERNIGHT. THE MAIN HAZARDS WILL BE CLOUD TO GROUND LIGHTING AND VERY HEAVY RAINFALL. SOME OF THE THUNDERSTORMS WILL PRODUCE HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ..FRIDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SATURDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..SUNDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..MONDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..TUESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ..WEDNESDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... NONE. 07
In the hours before
Special weather statement, Sep 18, 11:41 PM EDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1141 PM EDT THU SEP 18 2014
NCZ082-190430-
UNION-
1141 PM EDT THU SEP 18 2014
...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN UNION COUNTY IN THE
PIEDMONT OF NORTH CAROLINA THROUGH 1230 AM EDT...
AT 1138 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR MARSHVILLE...OR 10 MILES EAST OF MONROE...
MOVING WEST AT 5 MPH.
THIS STORM WILL IMPACT LOCATIONS NEAR...
WINGATE...
UNIONVILLE...
SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAINFALL ARE
EXPECTED WITH THIS STORM.
THE COMBINATION OF GUSTY WINDS AND WET SOIL CONDITIONS WILL CAUSE
SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDE AN
INTERIOR ROOM.
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.
PLEASE REPORT DAMAGING WINDS...HAIL...OR FLOODING 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
SPECIFIC LOCATION WHERE IT OCCURRED.
LAT...LON 3503 8029 3497 8029 3491 8031 3498 8063
3519 8053 3519 8049 3517 8046 3518 8043
3512 8028
JOHLocal storm report, Sep 19, 1:26 AM EDT, 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
126 AM EDT FRI SEP 19 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1250 AM FLASH FLOOD WINGATE 34.98N 80.45W
09/19/2014 UNION NC 911 CALL CENTER
HWY 74 IS CLOSED NEAR LOVE STREET DUE TO FLOODING.
&&
JOHLocal storm report, Sep 19, 1:28 AM EDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
128 AM EDT FRI SEP 19 2014
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0100 AM FLASH FLOOD WINGATE 34.98N 80.45W
09/19/2014 UNION NC 911 CALL CENTER
WILSON STREET IN WINGATE IS CLOSED DUE TO FLOODING.
&&
JOHThe office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 18, 11:27 PM EDT | Areal Flood Advisory | GSP | Union | 2 hr |
| Sep 18, 11:41 PM EDT | Special Weather Statement | GSP | Union | 49 min |
| Sep 18, 11:53 PM EDT | Severe Thunderstorm Warning | GSP | Union | 67 min |
| Sep 19, 12:19 AM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Sep 19, 1:19 AM EDT | Areal Flood Advisory | GSP | Union | 2 hr |
| Sep 19, 1:44 AM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Sep 19, 2:18 AM EDT | Areal Flood Advisory | GSP | Mecklenburg | 102 min |
| Sep 19, 3:23 AM EDT | Areal Flood Advisory | GSP | Union | 2 hr |
| Sep 19, 4:36 AM EDT | Areal Flood Advisory | GSP | Union | 114 min |
| Sep 19, 12:33 AM EDT | Areal Flood Advisory | GSP | Chester | 117 min |
| Sep 19, 3:16 AM EDT | Areal Flood Advisory | GSP | Chester | 2 hr |
| Sep 19, 3:34 AM EDT | Flash Flood Warning | GSP | Chester | 3 hr |
| Sep 19, 4:49 AM EDT | Areal Flood Advisory | GSP | Chester | 2 hr |
Nearby
Flash Flood Warnings in South Carolina, 2014Every flash flood warning in 2014
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.