Alert archive / North Carolina / Flash Flood Warnings in 2011

Flash Flood Warning 16, NWS Greenville-Spartanburg, SC

July 31, 2011Mecklenburg County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Jul 31, 2011, 1:06 AM EDT for Mecklenburg County, North Carolina. It was in force for 107 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
Jul 31, 2011, 1:06 AM EDT (05:06 UTC)
Expired
Jul 31, 2011, 2:53 AM EDT
In force
107 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Flood severity
None

County Mecklenburg County, NC

The radar

The Greer radar (KGSP), 140 km from the middle of the area, began a volume at 05:07 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 00:00Z, 5.1 hours before the alert went out and 123 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 2011-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 635 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2011-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.1939Sfc1 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
635 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1928 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
-12 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.

380 
WGUS52 KGSP 310506
FFWGSP
NCC119-310800-
/O.NEW.KGSP.FF.W.0016.110731T0506Z-110731T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
106 AM EDT SUN JUL 31 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

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

* UNTIL 400 AM EDT

* AT 105 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE      
  WARNED AREA. THE AUTOMATED RAIN GAGE AT HIDDEN VALLEY ELEMENTARY
  HAS REPORTED NEARLY 2 INCHES OF RAIN AND THIS WILL LIKELY RESULT
  IN FLOODING ALONG LITTLE SUGAR CREEK. FLOODING MAY ALSO DEVELOP
  ALONG MCMULLEN CREEK AND THE EASTSIDE OF CHARLOTTE.

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
  OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  CENTER CITY CHARLOTTE...UNC CHARLOTTE...EASTLAND MALL...I-77 AT
  I-85...MATTHEWS...MINT HILL...PINEVILLE AND SOUTHPARK MALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3512 8066 3501 8084 3511 8093 3531 8087
      3535 8070 3533 8068 3527 8067 3523 8059

$$
2 follow-up statements
535 
WGUS72 KGSP 310605
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
205 AM EDT SUN JUL 31 2011

NCC119-310800-
/O.CON.KGSP.FF.W.0016.000000T0000Z-110731T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MECKLENBURG NC-
205 AM EDT SUN JUL 31 2011

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MECKLENBURG
COUNTY UNTIL 400 AM EDT...

AT 202 AM EDT...RAINFALL WAS CONTINUING TO WIND DOWN ACROSS THE 
WARNED AREA...BUT AFTER A LOCALIZED TWO TO TWO AND ONE HALF INCH 
RAINFALL ACROSS SOUTHEAST MECKLENBURG COUNTY...STREAM LEVELS 
CONTINUED TO RISE. AREAS OF FLOODING ARE EXPECTED TO DEVELOP ACROSS 
THE IRWIN...LITTLE SUGAR...BRIAR...MCMULLEN AND MCALPINE CREEK 
BASINS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 3512 8066 3501 8084 3511 8093 3531 8087
      3535 8070 3533 8068 3527 8067 3523 8059

$$

CSH
753 
WGUS72 KGSP 310653
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
253 AM EDT SUN JUL 31 2011

NCC119-310706-
/O.CAN.KGSP.FF.W.0016.000000T0000Z-110731T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MECKLENBURG NC-
253 AM EDT SUN JUL 31 2011

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

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE CRESTED AND WILL RECEDE DURING 
THE REMAINDER OF TONIGHT...ENDING THE FLOOD THREAT. IF FLOODING HAS 
BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT 
AGENCY.

LAT...LON 3512 8066 3501 8084 3511 8093 3531 8087
      3535 8070 3533 8068 3527 8067 3523 8059

$$

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 Jul 30, 10:22 PM EDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jul 30, 10:22 PM EDT, 2 hours 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1022 PM EDT SAT JUL 30 2011

.SYNOPSIS...
A WEAK COLD FRONT WILL MOVE INTO THE AREA FROM THE NORTH
SUNDAY...THEN GRADUALLY DISSIPATE ACROSS SOUTH GEORGIA AND THE
CAROLINA COAST ON MONDAY. HIGH PRESSURE WILL BUILD OVER THE REGION
ON TUESDAY AND WEDNESDAY. ANOTHER WEAK COLD FRONT WILL APPROACH THE
SOUTHERN APPALACHIAN REGION LATE NEXT WEEK.

&&

.NEAR TERM /THROUGH SUNDAY/...
AS OF 1025 PM SAT...OUTFLOW BNDRY MOVING INTO THE FA FROM THE NORTH
IS MERGING WITH OLD BNDRYS LAID DOWN BY EARLIER STORMS AND YIELDING
QUITE A FEW SHRA AND TSTMS OVER THE NRN NC FOOTHILLS AND WESTERN
PIEDMONT. THIS ACTIVITY SHOULD CONTINUE FOR A FEW MORE
HOURS...ESPECIALLY DOWN ACROSS THE I-77 CORRIDOR WHERE THE GREATEST
INSTABILITY IS LOCATED AND WHERE MOST OF THE OUTFLOW MERGERS WILL
BE. POPS HAVE BEEN RAISED INTO THE LIKELY RANGE ACROSS THIS AREA.
THE LATEST RUC IS ALSO INDICATING A WELL DEFINED H5 CONVECTIVELY
INDUCED VORT SLOWLY CROSSING THE REGION WHICH IS LIKELY HELPING
IMPART A LITTLE SYNOPTIC SCALE FORCING ON THE CONVECTION. AREAS THAT
SEE RAINFALL COULD FOG UP LATER TONIGHT...BUT A SOLID AC/CS DECK IS
ALSO ENVELOPING THE REGION...SO WIDESPREAD DENSE FOG STILL LOOKS
UNLIKELY.

AS OF 755 PM SAT...CONVECTION OVER THE WRN PART OF THE UPSTATE...NE
GA AND THE SW NC MTNS HAS DISSIPATED. POPS IN THESE AREAS HAVE BEEN
LOWERED TO 20 PERCENT OR LESS. HEALTHY CHANCE POPS CONTINUE OVER
MOST OF THE REST OF WRN NC AND THE NE PART OF THE UPSTATE. THE
AIRMASS IN THESE AREAS REMAINS RATHER UPSTATE. AS LAYER RH/S
GRADUALLY INCREASE AND AS OUTFLOW BNDRYS CONTINUE TO ENTER THE
REGION FROM THE SOUTH AND WEST...SCT SHRA/TSTMS WILL CONTINUE FOR A
FEW MORE HOURS. LOOKS LIKE QUITE A BIT OF MID AND HIGH LEVEL CLOUD
COVER OVERNIGHT AND SKY COVER HAS BEEN INCREASED TO ACCOUNT FOR
THIS. I/LL KEEP AN EYE ON DIURNAL TRENDS...BUT CLOUD COVER WILL HOLD
UP MIN TEMPS IN SPOTS AS WELL.

AS OF 515 PM SAT...AN OUTFLOW BNDRY HAS MOVED INTO NE GA AND THE SW
NC MTNS. THIS IS HELPING TO CONCENTRATE SHOWER AND THUNDERSTORM
ACTIVITY OVER THE SAVANNAH RIVER VALLEY. THE WEAK SHEAR AND WARM MID
LEVEL TEMPS AREN/T ALLOWING FOR MUCH UPSCALE DEVELOPMENT...BUT THIS
MORE CONCENTRATED AREA OF CONVECTION SHOULD CONTINUE TO DRIFT TO THE
EAST OVER THE NEXT 2 TO 4 HOURS. I/VE ADDED LIKELY POPS ALONG AND
AHEAD OF THE LINE. I/VE ALSO TRIMMED POPS FOR THE NEXT COUPLE HOURS
OVER THE NC FOOTHILLS AND PIEDMONT. STORMS MAY INCREASE IN THESE
AREAS LATER IN THE EVENING AS LLVL CONVERGENCE STRENGTHENS ACROSS
THE FOOTHILLS AS A LEE TROUGH ADVANCES TO THE EAST /SEE THE NAM12
925MB MASS FIELDS/. THEREFORE I HAVE THE POPS INCREASING OVER THE NE
ZONES LATER IN THE EVENING.

ALSO OF NOTE...CHARLOTTE BROKE A RECORD HIGH TODAY HITTING 101
DEGREES.

PREVIOUS DISCUSSION...
UPPER RIDGE WILL CONTINUE TO SLIDE E AND WEAKEN OVER THE REGION
TONIGHT AND SUN...ALLOWING A WEAK SURFACE BOUNDARY AND A SERIES OF
WEAK SHORTWAVES ALOFT TO PUSH THRU THE AREA. WITH TEMPS WARMING INTO
THE MID TO UPPER 90S E OF THE MTNS AND DEW POINTS STAYING IN THE
UPPER 60S TO AROUND 70...HEAT INDEX VALUES NEAR 105 WILL LIKELY BE
REACHED ALONG THE SE TIER OF COUNTIES AND A HEAT ADVSRY IS IN PLACE
FOR THAT AREA. DID EXPAND AREA SLIGHTLY TO COVER ROCK
HILL...CHARLOTTE AND STATESVILLE. SOUNDINGS SHOW AREA NOT AS CAPPED
AS IN PREV DAYS SO SHWRS AND TSTMS WILL CONTINUE TO DEVELOP OVER THE
MTNS AND PUSH SE...WITH SCT CONVECTION DEVELOPING AND SPREADING OVER
THE PIEDMONT THRU THE AFTN AND EARLY EVE. CONVECTION WILL TAPER OFF
WITH COOLING BUT WITH WEAK UPPER FORCING OVERNIGHT...WE HELD ON TO
LOW END CHC POPS THRU THE NIGHT. WITH THE SFC BOUNDARY CONTINUING TO
MOVE THRU THE CWA AND WEAK UPPER LEVEL DIVERGENCE OVER THE AREA
SUN...LIKELY POPS WERE CARRIED FOR SUN AFTN. WITH THE ATMOS FAIRLY
WELL SATURATED THRU THE COLUMN AND PWATS OF OVER 2 INCHES...WENT
WITH MODERATE SHWRS SUN AFTN. NOT SEEING ANY PARTICULAR THREAT AREA
BUT SCT DRAINAGE PROBLEMS COULD OCCUR IN AREAS WHERE CELLS TRAIN.
DUE TO CLOUD COVER AND PRECIP TEMPS SHOULD BE ABOUT 6-8 DEG COOLER
SUN AFTN.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
AS OF 155 PM SATURDAY...A GENERAL WEAKNESS IN THE RIDGE WILL
CONTINUE AND THE UPPER LEVEL FLOW REMAINS DIVERGENT MON AS AN ILL
DEFINED SFC TROF SLOWLY SHIFTS SOUTH ACROSS THE CWFA. THERE IS GOOD
AGREEMENT IN THE OP MODELS WITH TIMING AND DEEPNESS OF MOISTURE AND
SUBSIDENCE DEVELOPING DOWN TO H7 THROUGHOUT THE DAY. WEAK E/LY
SFC/H85 FLOW WILL GENERATE SOME MEASURE OF TOPO LIFT ACROSS THE ERN
FACING SLOPES WHILE THE SFC TROF FOCUSES CONVERGENCE PRECIP ACTIVITY
ACROSS THE PIEDMONT REGIONS. HIGH END CHANCE POPS WILL COVER THIS
SCENARIO THROUGH EARLY MORNING MON WITH DECREASING POPS TO
SLIGHT/CHANCE N/S BY THE AFTERNOON. KEPT POPS A LITTLE MORE ACTIVE
ACROSS THE NC SRN/CNT MTNS MON AFTERNOON TO ACCOUNT FOR INSTABILITY
DEVELOPING IN THE WAKE OF THE DEEPER MOISTURE.

THUNDERSTORMS SHOULDN/T BECOME TOO STRONG IN THE AFTERNOON...WITH
SKINNY SBCAPE AND A DECENT CI DECK ROUNDING THE RIDGE....BUT THERE
IS A POSSIBILITY OF DIFFERENTIAL HEATING CLOSE TO THE SFC CONV ZONE
SETTING OFF A FEW TALLER AND STRONGER STORMS. MAX TEMPS WERE KEPT
RIGHT AROUND NORMAL AND FOLLOWED THE MORE CONSISTENT METMOS
GUIDANCE. THE MAV IS ABOUT 10 DEGREES WARMER THAN THE MET AND NO
GOOD REASON COULD BE FOUND IN THE DYNAMIC MODELS TO SUPPORT IT/S
OUTPUT. ALSO...THE 09Z SREF SIDED CLOSELY WITH THE COOLER MET.

MOISTURE LEVELS WILL CONTINUE TO WANE FAIRLY QUICKLY MON NIGHT AS
DEEPER SUBSIDENCE MOVES IN AND THE MID/UPPER HEIGHT GRADIENT
TIGHTENS AND BECOMES DISTINCTLY N/LY. THIS ALONG WITH A 1015 MB HIGH
CENTERING OVER THE REGION...WILL ALLOW DEEP DRYING. SO...NO POPS ARE
WARRANTED AND MAX TEMPS WILL REBOUND TO ABOUT 10 DEGREES ABOVE
NORMAL. GOOD AFTERNOON MIXING WILL LOWER SFC TD/S AND OFFSET ANY
HEAT ADVISORY CONCERNS.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF NOON SATURDAY...THE GLOBAL MODELS REMAIN IN QUITE GOOD
AGREEMENT ON THE OVERALL PATTERN ACROSS THE CONUS THROUGH THE MEDIUM
RANGE. EXPECT THE PATTERN TO REMAIN HIGHLY AMPLIFIED...WITH A MAJOR
SUBTROPICAL HIGH DOMINATING THE CENTRAL PORTION OF THE COUNTRY. THE
PERIOD WILL START OFF RELATIVELY DRY...AS CONVECTION TUE EVENING
INTO WEDNESDAY SHOULD REMAIN ISOLATED AT BEST UNDER THE INFLUENCE OF
AN UNSEASONABLY DRY AIRMASS.

HOWEVER...AS A SIGNIFICANT STORM SYSTEM MOVES ACROSS THE NORTHEAST
CONUS AND THE CANADIAN MARITIMES WEDNESDAY...A FRONTAL BOUNDARY WILL
SAG INTO THE SOUTHEAST FOR THE LATTER PART OF THE WEEK. AT FIRST...
IT DOESNT APPEAR THERE WILL BE A GREAT DEAL OF MOISTURE FOR THIS
FEATURE TO WORK WITH. HOWEVER...THE ECMWF/GFS SUGGEST THAT THE
BERMUDA HIGH WILL MAKE A COMEBACK BY THURSDAY OR SO...ALLOWING
CHANCES FOR DIURNAL CONVECTION TO INCREASE.

MAX TEMPS EARLY IN THE PERIOD WILL REMAIN AS MUCH AS A COUPLE OF
CATEGORIES ABOVE NORMAL...WITH MIN TEMPS AVERAGING AROUND NORMAL IN
THE DRIER AIR. BY THE END OF THE WEEK...MAX TEMPS WILL DECREASE A
BIT AND MINS INCREASE A BIT AS MOISTURE/CONVECTIVE COVERAGE
INCREASES.

&&

.AVIATION /03Z SUNDAY THROUGH THURSDAY/...
AT KCLT AND ELSEWHERE...AN OUTFLOW BNDRY WILL HAVE PUSHED THROUGH
ALL THE UPSTATE TAF SITES BY 00 UTC. THIS SHOULD KEEP CONVECTION OUT
OF THESE AREAS FOR SEVERAL MORE HOURS...AND PROBABLY THE REST OF THE
NIGHT. ALL OF THE NC SITES WILL HAVE TO CONTEND WITH SCT SHRA/TSTMS
THE NEXT SEVERAL HOURS. THE STORMS ARE SCATTERED ENUF THAT ONLY CB/S
HAVE BEEN ADDED TO THE TAF. HOPEFULLY THE CONVECTION WILL END
BETWEEN 2 AND 4 UTC. MVFR FOG AND HAZE IS POSSIBLE LATE
TONIGHT...THOUGH HIGH CLOUDS SHOULD KEEP VSBYS FROM GETTING TOO LOW.
IN FACT...IFR FOG HAS BEEN REMOVED FROM KAVL FOR THIS REASON.

WINDS WILL GRADUALLY TURN OUT OF THE NORTH OVERNIGHT AS A LEE SIDE
TROUGH MOVES THROUGH THE REGION. WINDS WILL BE WEST TO SOUTHWEST FOR
A TIME OVER THE UPSTATE...AND LIGHT OUT OF THE SOUTH AT KCLT PRIOR
TO THE TROF PASSAGE.

OUTLOOK...SFC BOUNDARY WILL PUSH S OF THE AREA SUN NIGHT-MON WITH
DRIER CONDITIONS EXPECTED TUE AND WED.

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...MCAVOY/RB
SHORT TERM...SBK
LONG TERM...JDL
AVIATION...MCAVOY
Hazardous weather outlook, Jul 30, 4:35 PM EDT, 8 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
435 PM EDT SAT JUL 30 2011

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>070-501>510-SCZ001>008-010-312045-
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-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-ANDERSON-
435 PM EDT SAT JUL 30 2011

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

.DAY ONE...TONIGHT.

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP
ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. ALTHOUGH
CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL WILL BE THE
MAIN THREATS...ONE OR TWO OF THESE STORMS COULD PRODUCE A BRIEF
PERIOD OF DAMAGING STRAIGHT LINE WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ071-072-082-SCZ009-011>014-019-312045-
MECKLENBURG-CABARRUS-UNION NC-YORK-ABBEVILLE-LAURENS-UNION SC-
CHESTER-GREENWOOD-
435 PM EDT SAT JUL 30 2011

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

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

.DAY ONE...TONIGHT.

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

   HEAT ADVISORY.

ISOLATED TO WIDELY SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP
ACROSS THE REGION LATE THIS AFTERNOON AND THIS EVENING. ALTHOUGH
CLOUD TO GROUND LIGHTNING AND LOCALLY HEAVY RAINFALL WILL BE THE
MAIN THREATS...ONE OR TWO OF THESE STORMS COULD PRODUCE A BRIEF
PERIOD OF DAMAGING STRAIGHT LINE WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

LANE

In the hours before

Local storm report, Jul 30, 9:50 PM EDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
950 PM EDT SAT JUL 30 2011

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

0903 PM     TSTM WND DMG     4 SSE SHELBY            35.23N 81.53W
07/30/2011                   CLEVELAND          NC   911 CALL CENTER

            SEVERAL TREES BLOWN DOWN IN A SUBDIVISION BETWEEN SULPHOR
            SPRINGS RD AND SOUTH POST RD.

&&

MCAVOY
Special weather statement, Jul 30, 11:10 PM EDT, 1 hour 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1110 PM EDT SAT JUL 30 2011

NCZ071-310345-
MECKLENBURG-
1110 PM EDT SAT JUL 30 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN MECKLENBURG COUNTY
THROUGH 1145 PM EDT...

AT 1105 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CROFT...OR 7 MILES WEST OF UNC CHARLOTTE...
MOVING EAST AT 5 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO I-77 AT
  I-85...CENTER CITY CHARLOTTE...UNC CHARLOTTE...HUNTERSVILLE AND
  CROFT.

WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM.

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

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 3520 8086 3533 8098 3535 8096 3536 8092
      3536 8094 3551 8081 3543 8076 3540 8077
      3535 8070 3531 8068 3530 8068

CSH
Special weather statement, Jul 31, 12:02 AM EDT, 1 hour 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1202 AM EDT SUN JUL 31 2011

NCZ071-310430-
MECKLENBURG-
1202 AM EDT SUN JUL 31 2011

...STRONG THUNDERSTORMS WILL AFFECT MECKLENBURG COUNTY THROUGH 1230
AM EDT...

AT 1159 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ACROSS CENTRAL AND SOUTH CHARLOTTE...MOVING
SOUTHEAST AT 10 MPH.

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

WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THESE STORMS.

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

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 3521 8055 3503 8077 3500 8084 3511 8094
      3505 8104 3506 8106 3511 8104 3515 8105
      3515 8101 3517 8100 3526 8101 3535 8097
      3528 8067 3527 8066

CSH
Special weather statement, Jul 31, 12:31 AM EDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1231 AM EDT SUN JUL 31 2011

NCZ071-310500-
MECKLENBURG-
1231 AM EDT SUN JUL 31 2011

...STRONG THUNDERSTORMS CONTINUE TO AFFECT SOUTHERN MECKLENBURG
COUNTY THROUGH 100 AM EDT...

AT 1229 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG STORMS NEAR SOUTHPARK MALL...OR 5 MILES SOUTH OF CENTER
CITY CHARLOTTE...MOVING EAST AT 10 MPH.

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

WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THESE STORMS.

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

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY
AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY
ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.

LAT...LON 3503 8077 3503 8080 3500 8084 3509 8091
      3511 8095 3526 8090 3533 8070 3533 8069
      3527 8067 3521 8055

CSH

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 8:55 PM EDTAreal Flood AdvisoryGSPMadison95 min
Jul 30, 11:10 PM EDTSpecial Weather StatementGSPMecklenburg35 min
Jul 31, 12:02 AM EDTSpecial Weather StatementGSPMecklenburg28 min
Jul 31, 12:31 AM EDTSpecial Weather StatementGSPMecklenburg29 min
Jul 31, 12:59 AM EDTAreal Flood AdvisoryGSPMecklenburg2 hr
Jul 31, 1:53 AM EDTAreal Flood AdvisoryGSPCabarrus95 min
Jul 31, 2:52 PM EDTSpecial Weather StatementGSPMcDowell38 min
Jul 31, 3:24 PM EDTAreal Flood AdvisoryGSPHaywood2 hr
Jul 31, 3:38 PM EDTSpecial Weather StatementGSPCatawba37 min
Jul 31, 5:00 PM EDTSevere Thunderstorm WarningGSPDavie, Rowan60 min
Jul 31, 5:36 PM EDTSevere Thunderstorm WarningGSPRowan39 min
Jul 31, 6:36 PM EDTSpecial Weather StatementGSPMecklenburg24 min
Jul 31, 6:51 PM EDTSevere Thunderstorm WarningGSPBurke, Catawba54 min
Jul 31, 7:12 PM EDTSevere Thunderstorm WarningGSPCleveland, Gaston, Lincoln63 min
Jul 31, 7:35 PM EDTSpecial Weather StatementGSPUnion40 min
Jul 31, 7:45 PM EDTSpecial Weather StatementGSPRutherford45 min
Jul 31, 7:59 PM EDTSevere Thunderstorm WarningGSPPolk, Rutherford61 min

Nearby

Flash Flood Warnings in North Carolina, 2011Every flash flood warning in 2011

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.