Alert archive / North Carolina / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 263, NWS Greenville-Spartanburg, SC

December 30, 2015Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Dec 30, 2015, 1:05 PM EST for Union County, North Carolina. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Dec 30, 2015, 1:05 PM EST (18:05 UTC)
Expired
Dec 30, 2015, 1:45 PM EST
In force
40 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

County Union County, NC

The radar

The Columbia radar (KCAE), 136 km from the middle of the area, began a volume at 18:05 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm 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, 6.1 hours before the alert went out and 126 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 2015-12-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 2015-12-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.1939587897Sfc1 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
1236 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

657 
WUUS52 KGSP 301805
SVRGSP
NCC179-301845-
/O.NEW.KGSP.SV.W.0263.151230T1805Z-151230T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
105 PM EST WED DEC 30 2015

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 145 PM EST

* AT 104 PM EST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
  WAS LOCATED 10 MILES EAST OF LANCASTER...OR 8 MILES NORTHEAST OF
  ELGIN...AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  MONROE...UNIONVILLE...WINGATE...MARSHVILLE...STURDIVANTS...NEW
  SALEM AND TRINITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS CAPABLE OF BLOWING DOWN SCATTERED TREES AND POWER
LINES. BRIEF LARGE HAIL MAY ALSO OCCUR. A TORNADO COULD DEVELOP VERY
QUICKLY AND A TORNADO WARNING COULD BE NEEDED. SEEK SHELTER INSIDE
AN INTERIOR ROOM.

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
THE SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3481 8032 3482 8072 3483 8073 3516 8047
      3517 8042 3517 8039 3518 8037 3517 8036
      3520 8028
TIME...MOT...LOC 1804Z 240DEG 56KT 3475 8060 

$$

HG
2 follow-up statements
387 
WWUS52 KGSP 301828
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
128 PM EST WED DEC 30 2015

NCC179-301845-
/O.CON.KGSP.SV.W.0263.000000T0000Z-151230T1845Z/
UNION NC-
128 PM EST WED DEC 30 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 PM EST
FOR SOUTHEASTERN UNION COUNTY...
 
AT 127 PM EST...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 10 MILES
EAST OF MONROE TO 20 MILES SOUTHWEST OF WADESBORO TO 17 MILES EAST OF
LANCASTER...MOVING EAST AT 35 MPH.

THE THUNDERSTORM WINDS WILL COMBINE WITH SATURATED SOILS TO KNOCK
DOWN TREES ACROSS SOUTHEAST UNION COUNTY.

LOCATIONS IMPACTED INCLUDE...
WINGATE...MARSHVILLE...STURDIVANTS...TRINITY AND NEW SALEM. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS ARE CAPABLE OF BLOWING DOWN SCATTERED TREES AND POWER
LINES. SEEK SHELTER INSIDE AN INTERIOR ROOM.

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
THE SPECIFIC LOCATION WHERE IT OCCURRED.

&&

LAT...LON 3482 8054 3507 8045 3519 8028 3481 8032
TIME...MOT...LOC 1827Z 249DEG 28KT 3502 8037 3483 8040 3466 8048 

$$

HG
634 
WWUS52 KGSP 301843
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
143 PM EST WED DEC 30 2015

NCC179-301851-
/O.EXP.KGSP.SV.W.0263.000000T0000Z-151230T1845Z/
UNION NC-
143 PM EST WED DEC 30 2015

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN UNION COUNTY WILL
EXPIRE AT 145 PM EST...
    
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST OF THE
AREA. THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE ON SCHEDULE
AT 145 PM EST. HOWEVER...GUSTY WINDS ARE STILL POSSIBLE BEHIND THE
THUNDERSTORMS ACROSS SOUTHEAST UNION COUNTY THROUGH 2 PM EST.

LAT...LON 3482 8054 3507 8045 3519 8028 3481 8032
TIME...MOT...LOC 1839Z 240DEG 56KT 3502 8037 3483 8040 3466 8048 

$$

HG

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 Dec 30, 12:18 PM EST, 47 minutes earlier.

Area forecast discussion, Dec 30, 12:18 PM EST, 47 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1218 PM EST WED DEC 30 2015

.SYNOPSIS...
MOISTURE WILL PERSIST THROUGH THURSDAY AS A FRONT REMAINS STALLED IN
THE AREA. A DRYING TREND WILL BEGIN ON NEW YEARS...LASTING AT LEAST
INTO EARLY NEXT WEEK...AS HIGH PRESSURE PUSHES IN FROM THE WEST.

&&

.NEAR TERM /THROUGH TONIGHT/...
1715 UTC UPDATE...WINDS WERE UPDATED WITH A BLEND OF THE LATEST NAM
AND ADJMAV. POPS AND QPF WERE ADJUSTED PER RADAR TRENDS. ONLY MINOR
ADJUSTMENTS WERE MADE TO TEMPERATURES AND DEW POINTS.

1300 UTC UPDATE...QPF HAS BEEN RAISED OVER NE GA AND UPSTATE SC PER
TRENDS UPSTREAM IN N GA.

AS OF 630 AM EST WEDNESDAY...AS UPPER SUPPORT RAMPS UP AHEAD OF
AN APPROACHING JETMAX...STARTING TO SEE INCREASING SHRA COVERAGE
ACROSS THE AREA.  THE FRONTAL AXIS TO THE SOUTH IN SLOWLY ON THE
MOVE AS EXPECTED WITH NEARLY ALL SITES SOUTH OF I85 REPORTING IN
WITH SOUTHERLY FLOW AND IMPROVING DEWPOINTS.  OTHERWISE...TWEAKED
POPS A BIT TO ALIGN WITH CURRENT RADAR COVERAGE...ALONG WITH MINOR
ADJUSTMENTS TO TEMPERATURES/DEWPOINTS TO REFLECT OBS.  NO OTHER
CHANGES NEEDED/MADE WITH THIS UPDATE.

PREVIOUS DISCUSSION...THE COMBINATION OF H5 RIDGING OVER THE
WESTERN ATLANTIC AND BROAD TROFING OVER THE CENTRAL CONUS CONTINUES
TO YIELD DEEP SOUTHWEST FLOW ALOFT ACROSS THE SOUTHEAST STATES.
AT THE SURFACE...THE OLD STATIONARY COLD FRONTAL AXIS IS STARTING
ITS PROGGED NORTHWARD MIGRATION AS A WARM FRONT THIS MORNING.
ADDITIONALLY...AN APPROACHING UPPER LEVEL JET MAX EJECTING
THROUGH THE SOUTHERN PLAINS AROUND THE BASE OF THE PARENT TROF
WILL AID UPPER DIVERGENCE WHILE A SERIES OF H5 VORT LOBES SLIDE
ALONG THE MEAN FLOW IN PROXIMITY TO THE SFC WARM FRONT. GIVEN THE
A FORE MENTIONED FEATURES... ALONG WITH THE MEANDERING FRONTAL
AXIS...AND AMPLE MOISTURE BY WAY OF PWAT VALUES IN EXCESS OF 3-4
STD DEVS ABOVE NORMS...MODERATE TO HEAVY RAINFALL LOOKS PROBABLE.
THE FCST CHALLENGE IS DETERMINING THE PLACEMENT OF SUCH. MOST RECENT
GUIDANCE HAS TRENDED A QPF MAXIMA OUTSIDE OF THE NC MTNS AND ACROSS
NE GA...UPSTATE SC...AND THE ENTIRE NC PIEDMONT...WHICH ALL SEEMS
LOGICAL GIVEN THE QUASISTATIONARY NATURE OF THE FRONT. FOCUSING IN
A LITTLE MORE...THE FCST WILL FAVOR THE I85/I77 CORRIDORS WITH THE
HEAVIEST QPF TOTALS AS SOUNDINGS ARE FAVORABLE FOR MODEST SBCAPE
FOR THIS TIME OF YEAR...UPWARDS OF 500-700 JOULES AS LAPSE RATES
REMAIN RELATIVELY STEEP THROUGH A DEEP LAYER. THUS...THINK DEEPER
CONVECTION COULD YIELD PRECIP RATES IN EXCESS OF A HALF TO ONE
INCH PER HOUR AT TIMES...WITH SOME CELL TRAINING POSSIBLE ALONG
THE FRONT GIVEN FAIRLY UNIDIRECTIONAL FLOW ALOFT. NEW STORM TOTAL
QPF AMOUNTS OF 1-2 INCHES ARE FCST WITH LOCALLY HIGHER AMOUNTS
CERTAINLY BEING A POSSIBILITY.  ALL SAID...WILL OPT TO EXPAND
CURRENT FLOOD WATCH NORTHWEST ACROSS THE I40 CORRIDOR TO CONSUME
THE ENTIRETY OF THE NC PIEDMONT.  LIKEWISE...WILL DROP THE WATCH
FURTHER WEST ACROSS MUCH OF THE NC MTNS.

ADDITIONALLY...AS NOTED ABOVE THERMAL PROFILES THIS AFTERNOON
WILL EXHIBIT MODEST LAPSE RATES WITH GUIDANCE FAVORING A TIGHT
INSTABILITY GRADIENT ADJACENT/SOUTH OF THE WARM FRONT.  DEPENDING OF
THE LOCATION OF THE FRONT...LOCALES IN ITS VICINITY AND SOUTH WILL
SEE INCREASED THUNDER POTENTIAL.  AS FOR SEVERE...DEFINITELY NOT
GOING TO RULE ANYTHING OUT AS THE FRONT WILL PROVIDE ADDED FOCUS
FOR LOCALIZED SHEAR MAXIMAS WITH PROFILES SUPPORTING BULK SHEAR IS
IN THE 40-50KT RANGE ON A BROADER SCALE.  THUS THE HWO WILL INCLUDE
SEVERE WORDING WITH DAMAGING WINDS...FREQUENT LIGHTNING...AND FLASH
FLOODING BEING THE PRIMARY THREATS.  ISOLATED TORNADOES CANNOT BE
RULED OUT GIVEN THE ABUNDANT SHEARING...HOWEVER SLIGHTLY VEERED
SURFACE FLOW WILL LIMIT THE CHANCES SOMEWHAT.  THAT SAID...ANYTIME
THERE COULD BE ENHANCEMENT GIVEN BOUNDARY INTERACTION...ANYTHING
IS POSSIBLE WITH EVEN MODEST INSTABILITY THIS TIME OF YEAR.

AS FOR THE FCST...POPS WILL RAMP UP THIS MORNING FROM THE SOUTH
WITH CAT POPS FAVORED BY MIDDAY ACROSS THE ENTIRE FCST DOMAIN.
POPS WILL REMAIN ELEVATED THROUGH THE AFTERNOON BEFORE GRADUALLY
FALLING OFF FROM THE WEST AFTER SUNSET...INTO THE OVERNIGHT AS
DRIER AIR ADVECTS IN WITH AN INTRUDING COLD FRONT.  TEMPERATURES
WILL BE A TOUCH COOLER THAN DAYS PAST AS ABUNDANT CLOUDINESS
INHIBITS INSOLATION...HOWEVER MAX VALUES NEAR 15 DEGREES ABOVE
CLIMO ARE FCST.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
AS OF 230 AM WEDNESDAY...SOUTHWEST FLOW ALOFT WILL CONTINUE OVER
THE SOUTHEAST AND SOUTHERN APPALACHIANS AT THE START OF THE SHORT
TERM...WITH THE COLD FRONT STALLED ACROSS SOUTHEASTERN PORTIONS OF
THE FORECAST AREA. STRONG SHORTWAVE DIGGING OUT OF SOUTH CENTRAL
CANADA INTO THE NORTHERN PLAINS WILL USHER IN THE PATTERN CHANGE
FOR THE WEEKEND. 00Z GUIDANCE IS SLOW TO MOVE THE PRECIP OUT OF OUR
SOUTHEAST ZONES THURSDAY...SO HAVE HUNG ONTO SLIGHT CHANCE SHOWERS
ACCORDINGLY. SURFACE HIGH PRESSURE BUILDS IN FROM THE WEST AND
FINALLY PUSHES ALL THE PRECIP OUT LATE ON FRIDAY. THE AFOREMENTIONED
SHORTWAVE CONTINUES TO DIG SOUTHEAST...WITH THE TROUGH AXIS CROSSING
THE SPINE OF THE APPALACHIANS TOWARD THE END OF THE PERIOD. GFS IS
A LITTLE FASTER WITH THIS...WITH THE TROUGH AXIS PUSHING THROUGH
BY 06Z SATURDAY...BUT THE ECMWF IS A TAD SLOWER AND HAS THE TROUGH
AXIS RIGHT ON THE TN/NC LINE AT THE END OF THE SHORT TERM.

THE BIG STORY WILL BE THE CHANGE IN TEMPERATURES IN THE WAKE
OF THE COLD FRONT...WITH A SECONDARY COOL-DOWN BEHIND THE
LATE-PERIOD TROUGH AXIS WHICH WILL BE REALIZED AS WE BEGIN THE
EXTENDED. SHOULD STILL SEE HIGHS WELL ABOVE SEASONAL NORMALS FOR
THE FOOTHILLS AND PIEDMONT ON THURSDAY /DEPENDING ON EXACTLY WHERE
THE FRONT IS LOCATED AT MAX HEATING/...BUT THE MOUNTAINS WILL
ALREADY BE EXPERIENCING SOME RELIEF FROM THE SPRING-LIKE TEMPS BY
THURSDAY. HIGHS THURSDAY SHOULD BE 5 OR SO DEGREES COOLER THAN
THOSE TODAY. FOR NEW YEARS DAY HOWEVER...WITH THE CAA PUSHING
IN...SHOULD SEE ANOTHER 10 DEGREE DROP IN HIGHS TO JUST SLIGHTLY
ABOVE SEASONAL AVERAGES. THE AREA HASN'T SEEN TEMPERATURES BELOW
FREEZING SINCE DECEMBER 20 AND BY NEW YEARS NIGHT...THE MOUNTAINS
AND FOOTHILLS WILL BE BACK INTO THE SWING OF NORMAL WINTER.

OTHER THAN THE TEMPERATURES...CANNOT TOTALLY RULE OUT SOME
ISOLATED SNOW SHOWERS AT THE HIGHEST ELEVATIONS LATE THURSDAY/EARLY
FRIDAY...BUT SYNOPTIC SETUP NOT PARTICULARLY SUPPORTIVE SINCE IT
IS MORE WEST TO SOUTHWEST FLOW ALOFT. TEMPS WILL BE JUST ABOVE
FREEZING FOR THE MOST PART THURSDAY NIGHT SO CONFIDENCE JUST NOT
ENOUGH TO INCLUDE ANY FLURRIES/SNOW SHOWERS AT THIS TIME.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
AS OF 245 AM WEDNESDAY...WE START THE EXTENDED EITHER RIGHT AFTER
THE SECONDARY UPPER TROUGH AXIS AND DRY COLD FRONT /ON THE GFS/
OR WITH IT RIGHT ON OUR DOORSTEP /ECMWF/...BUT THE RESULTING
SENSIBLE WEATHER IS THE SAME. CAA BEHIND THE SYSTEM WILL RESULT
IN HIGHS SATURDAY ACTUALLY BELOW...YES BELOW...SEASONAL NORMALS
FOR THE AREA. THIS IS SHORT-LIVED AS WE WARM UP AGAIN SUNDAY WITH
WEAK CONFLUENT FLOW ALOFT...AND RIDGING BUILDING INTO THE CENTER OF
THE COUNTRY. DRY HIGH PRESSURE WILL DOMINATE OUR WEATHER...THOUGH
UNSETTLED WEATHER IS JUST A STATE AWAY IN SOUTH GEORGIA AND ALONG
THE FLORIDA PANHANDLE AS THE FRONT REMAINS STALLED IN THOSE AREAS.

MODELS DIVERGE PRETTY SIGNIFICANTLY EARLY NEXT WEEK WITH THE GFS
BRINGING ANOTHER SHORTWAVE THROUGH EARLY MONDAY BUT WITH WEAK
RIDGING BUILDING IN FOR THE ECWMF. HOWEVER...DRY WEATHER SHOULD
CONTINUE TO DOMINATE...ALLOWING THE FORECAST AREA TO CONTINUE
TO DRY OUT...THOUGH THERE MAY BE SOME QUESTION AS TO ACTUAL
TEMPERATURES. FOR NOW HAVE KEPT A BLEND WITH TEMPERATURES PRETTY
CLOSE TO SEASONAL NORMALS. MIGHT START SEEING SOME PRECIPITATION
CREEP BACK INTO THE AREA AT THE VERY END OF THE PERIOD BUT NOT
ENOUGH CONFIDENCE TO INCLUDE AT THIS TIME.

&&

.AVIATION /17Z WEDNESDAY THROUGH SUNDAY/...
AT KCLT...ALTHOUGH THE HEAVIEST PRECIPITAITON IS GRAUDAULLY SHIFINT
TO THE EAST...ANDTHE CHACNE OF CONVECTION WILL DECREASE THIS
AFTEROOON...GUIDANCE AND MODEL TIEM HEIGHTS SUGGEST VSBY AND CIG
RESTICIONS WILL PERSIST THROGH TONIGHT AND INTO THURSDAY
MORNING...AS DRY AIR BEHIND THE FRONT WUILL BE SLOW TO MOVE INTO THE
AREA. WINDS ARE EXPECTED TO VEER FROM SW TO NE ON THURSDAY MORNING.

ELSEWHERE...THE GREATEST PRECIPITAITON IS ALREADY SHIFTING EAST OF
THE FOOTHILLS...BUT FROTNAL PASSAGE AND THE ARRIVAL OF DRIER AIR IS
NOT EXPECTED UNTIL EARLY THURSDAY. AS A RESULT...MODEL GUIDANCE
SUPORTS PERSISINT VSCY AND CIG RESTIRCIONS INTO EARLY THURSDAY.
WIDNS ARE EXPECTED TO VEER FROM SW TO NW AHEAD OF THE FRONT AT KAVL
BY THIS EVENING...IF NOT SOONER. AT FOOTHILLS SITES...WINDS VEER
FROM SW TO NW EARLY THURSDAY MORNING.

OUTLOOK...DEEP LAYER MOISTURE WILL DECREASE ON THURSDAY AS A COLD
FRONT SWEEPS THROUGH THE AREA ALLOWING FOR THE RETURN OF COOL/DRY
HIGH PRESSURE AND THUS LOW CHANCES FOR RESTRICTIONS THROUGH THE
WEEKEND.

CONFIDENCE TABLE...

            17-23Z        23-05Z        05-11Z        11-12Z
KCLT       MED   71%     HIGH  83%     MED   72%     MED   75%
KGSP       MED   78%     MED   78%     HIGH  83%     HIGH  83%
KAVL       MED   64%     MED   66%     MED   66%     MED   75%
KHKY       MED   71%     HIGH  83%     MED   72%     LOW   58%
KGMU       MED   71%     HIGH  83%     HIGH  83%     HIGH  83%
KAND       MED   78%     HIGH  83%     HIGH  89%     HIGH  83%

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

&&

.HYDROLOGY...
SOME CHANGES TO FLOOD WATCH PLACEMENT WITH THIS FCST.  LOCALES
ACROSS NE GA AND UPSTATE SC REMAIN UNCHANGED WHILE THE WATCH WAS
EXPANDED NW TO INCLUDE THE ENTIRE NC PIEDMONT AS LATEST GUIDANCE
FAVORS A SHIFTED QPF MAXIMA ALONG THE QUASISTATIONARY FRONTAL AXIS.
FURTHERMORE...MUCH OF THE WESTERN EXTENT OF THE PREVIOUS WATCH
WAS REMOVED AS SAID MAXIMA REMAINS OUTSIDE OF THE MTNS.

STREAM LEVELS AROUND THE REGION ARE RUNNING QUITE HIGH GIVEN THE
RECENT RAINFALL. ALTHOUGH ADDITIONAL QPF GOING FORWARD MAY BE
LIMITED TO 1 TO 2 INCHES IN MANY AREAS...WET ANTECEDENT CONDITIONS
ALONG WITH POSSIBLY HIGHER RATES IN CONVECTION THIS AFTERNOON WILL
YIELD A RENEWED FLOODING THREAT.

DEEP MOISTURE WILL RETURN OVER THE STALLED FRONTAL BOUNDARY
TONIGHT...BRINGING PRECIPITABLE WATER ANOMALIES OF 2 TO 3+ STANDARD
DEVIATIONS ABOVE NORMAL TO THE REGION. THIS WILL INTERACT WITH MANY
AREAS WHERE 3 HOUR FLOOD GUIDANCE IS GENERALLY LESS THAN 2 INCHES.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...FLOOD WATCH THROUGH THURSDAY MORNING FOR GAZ010-017-018-026-
     028-029.
NC...FLOOD WATCH THROUGH THURSDAY MORNING FOR NCZ036-037-056-057-
     062>065-068>072-082-507>510.
SC...FLOOD WATCH THROUGH THURSDAY MORNING FOR SCZ001>014-019.

&&

SYNOPSIS...TDP
NEAR TERM...CDG/JAT
SHORT TERM...TDP
LONG TERM...TDP
AVIATION...JAT
HYDROLOGY...
Hazardous weather outlook, Dec 30, 4:23 AM EST, 8 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
423 AM EST WED DEC 30 2015

GAZ010-017-018-026-028-029-NCZ036-037-056-057-062>065-068>072-082-
507>510-SCZ001>014-019-310930-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-IREDELL-DAVIE-CATAWBA-
ROWAN-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-CLEVELAND-
LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION-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-CHESTER-GREENWOOD-
423 AM EST WED DEC 30 2015

...FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...

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

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   FLOOD WATCH.

ADDITIONALLY...SCATTERED TO NUMEROUS THUNDERSTORMS ARE POSSIBLE
THIS AFTERNOON AND EVENING. IN ADDITION TO HEAVY RAINFALL...
FREQUENT LIGHTNING AND GUSTY WINDS CAN BE EXPECTED. ISOLATED
SEVERE THUNDERSTORMS ARE POSSIBLE...WITH DAMAGING WINDS THE
PRIMARY THREAT...BUT AN ISOLATED TORNADO CANNOT BE RULED OUT.

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

..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..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.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF FLOODING
OR SEVERE WEATHER TO OUR OFFICE.

NCZ033-035-048>053-058-059-501>506-310930-
AVERY-ALEXANDER-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-
GRAHAM-NORTHERN JACKSON-CALDWELL MOUNTAINS-GREATER CALDWELL-
BURKE MOUNTAINS-GREATER BURKE-MCDOWELL MOUNTAINS-EASTERN MCDOWELL-
423 AM EST WED DEC 30 2015

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

.DAY ONE...TODAY AND TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON
AND EVENING. THE MAIN THREATS IN ANY THUNDERSTORM THAT DEVELOPS
WILL BE BRIEF HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY WINDS.

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

..THURSDAY...NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
..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.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Local storm report, Dec 30, 12:10 PM EST, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1210 PM EST WED DEC 30 2015

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

1145 AM     FLASH FLOOD      2 W HUNTERSVILLE        35.42N 80.88W
12/30/2015                   MECKLENBURG        NC   PUBLIC

            MAJOR ROAD FLOODING ACROSS GILEAD RD WEST OF
            HUNTERSVILLE, NC.

&&

JPT
Special weather statement, Dec 30, 12:15 PM EST, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1215 PM EST WED DEC 30 2015

NCZ082-SCZ014-301745-
UNION NC-CHESTER SC-
1215 PM EST WED DEC 30 2015

...STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHWESTERN UNION
NC AND EASTERN CHESTER COUNTIES UNTIL 1245 PM EST...

AT 1214 PM EST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 10
MILES SOUTHEAST OF CHESTER...OR 6 MILES SOUTHWEST OF RICHBURG...
MOVING NORTHEAST AT 50 MPH.

WIND GUSTS UP TO 40 MPH AND VERY HEAVY RAINFALL RATES UP TO 2 INCHES
PER HOUR WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
MINERAL SPRINGS...FORT LAWN...RICHBURG...FISHING CREEK RESERVOIR...
WAXHAW...GREAT FALLS...JAARS AND TRINITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3482 8079 3479 8087 3475 8088 3470 8086
      3467 8089 3464 8090 3459 8089 3455 8099
      3456 8111 3467 8119 3482 8092 3482 8090
      3480 8087 3483 8080 3489 8079 3499 8061
      3482 8049
TIME...MOT...LOC 1714Z 240DEG 49KT 3463 8106

HG
Local storm report, Dec 30, 12:46 PM EST, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1246 PM EST WED DEC 30 2015

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

1240 PM     FLASH FLOOD      2 NE FORTSONIA          34.03N 82.76W
12/30/2015                   ELBERT             GA   911 CALL CENTER

            BACK WATER FROM WAHACHEE CREEK WAS APPROACHING A HOME ON
            MORGAN LANE. MORGAN LANE IS FLOODED...FIRE DEPARTMENT EN
            ROUTE TO ASSIST FAMILY IN THE HOME.

&&

NED
Local storm report, Dec 30, 12:49 PM EST, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1249 PM EST WED DEC 30 2015

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

1245 PM     FLASH FLOOD      HUNTERSVILLE            35.42N 80.85W
12/30/2015                   MECKLENBURG        NC   AMATEUR RADIO

            HIGHWAY 115 AND MOUNT HOLLY ROAD IMPASSABLE DUE TO
            FLOODING.

&&

NED
Local storm report, Dec 30, 12:55 PM EST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1255 PM EST WED DEC 30 2015

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

1235 PM     FLASH FLOOD      3 WNW HARRISBURG        35.33N 80.72W
12/30/2015                   MECKLENBURG        NC   OFFICIAL NWS OBS

            MALLARD CREEK AT HARRISBURG REACHED 13 FEET...WHICH IS
            FLOOD STAGE. AT THIS STAGE...ROADS AND A PORTION OF THE
            AMPI-THEATHER PARKING LOT WILL BE FLOODED.

&&

NED
Special weather statement, Dec 30, 12:57 PM EST, 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1257 PM EST WED DEC 30 2015

SCZ011-012-019-301830-
ABBEVILLE SC-LAURENS SC-GREENWOOD SC-
1257 PM EST WED DEC 30 2015

...STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTH CENTRAL
LAURENS...GREENWOOD AND EAST CENTRAL ABBEVILLE COUNTIES UNTIL 130 PM
EST...

AT 1256 PM EST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6
MILES SOUTHWEST OF GREENWOOD...MOVING NORTHEAST AT 75 MPH.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
GREENWOOD...NINETY SIX...CROSS HILL...LAKE GREENWOOD...NINETY SIX
HISTORIC SITE...GREENWOOD STATE PARK...WATERLOO...PROMISED LAND...
BRADLEY AND CORONACA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GUSTY WINDS CAN BLOW DOWN TREES THAT ARE DEAD...OR THAT HAVE WEAKENED
ROOT SYSTEMS. OUTDOOR FURNITURE AND SIMILAR ITEMS CAN BE TOSSED
AROUND IF NOT ANCHORED. SEEK SHELTER INDOORS.

&&

LAT...LON 3399 8221 3402 8224 3400 8227 3417 8235
      3440 8198 3430 8190 3424 8191 3420 8194
      3420 8193 3418 8192 3418 8191 3416 8191
      3413 8187 3408 8193 3397 8217
TIME...MOT...LOC 1756Z 242DEG 64KT 3412 8223

HG

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 30, 8:34 AM ESTAreal Flood AdvisoryGSPMacon6 hr
Dec 30, 8:59 AM ESTAreal Flood AdvisoryGSPMacon6 hr
Dec 30, 9:36 AM ESTAreal Flood WarningGSPPolk, Rutherford6 hr
Dec 30, 9:40 AM ESTSpecial Weather StatementGSPGaston35 min
Dec 30, 9:42 AM ESTFlash Flood WarningGSPCleveland, Gaston6 hr
Dec 30, 10:03 AM ESTSpecial Weather StatementGSPCabarrus, Mecklenburg, Rowan27 min
Dec 30, 10:07 AM ESTFlash Flood WarningGSPCabarrus, Mecklenburg6 hr
Dec 30, 11:18 AM ESTFlash Flood WarningGSPMecklenburg6 hr
Dec 30, 11:38 AM ESTFlash Flood WarningGSPCabarrus, Union6 hr
Dec 30, 12:31 PM ESTFlash Flood WarningGSPCatawba, Davie, Iredell, Lincoln, Rowan6 hr
Dec 30, 12:31 PM ESTRiver Flood WarningGSPGaston28 hr
Dec 30, 3:45 PM ESTAreal Flood WarningGSPCleveland, Gaston6 hr
Dec 30, 4:05 PM ESTAreal Flood WarningGSPCabarrus, Mecklenburg6 hr
Dec 30, 5:03 PM ESTAreal Flood WarningGSPMecklenburg6 hr
Dec 30, 5:29 PM ESTAreal Flood WarningGSPCabarrus, Union6 hr
Dec 30, 5:37 PM ESTAreal Flood AdvisoryGSPIredell, Lincoln, Rowan3 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2015Every severe thunderstorm warning in 2015

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.