Alert archive / North Carolina / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 34, NWS Greenville-Spartanburg, SC

May 10, 2014Cabarrus County, Mecklenburg County, Union County, North Carolina; York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 10, 2014, 3:41 PM EDT for Cabarrus County, Mecklenburg County, Union County, North Carolina; York County, South Carolina. It was in force for 64 min. 2 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
May 10, 2014, 3:41 PM EDT (19:41 UTC)
Expired
May 10, 2014, 4:45 PM EDT
In force
64 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Cabarrus County, NC, Mecklenburg County, NC, Union County, NC, York County, SC

The radar

The Greer radar (KGSP), 132 km from the middle of the area, began a volume at 19:44 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
May 10, 3:46 PM EDTTSTM WND DMGConcord, NCSEVERAL POWERLINES DOWN.
May 10, 4:00 PM EDTTSTM WND DMG3 Ese Pineville, NCHIGHWAY SIGNAGE BLOWN DOWN BY WIND AT 485 OVERPASS.

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 2 storm reports to this severe thunderstorm warning; the first came 5 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 12:00Z, 7.7 hours before the alert went out and 135 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 2014-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 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 2014-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 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
133 J/kg
Mixed-layer CIN
-134 J/kg
Mixed-layer LCL
1417 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-54 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.

034 
WUUS52 KGSP 101941
SVRGSP
NCC025-119-179-SCC091-102045-
/O.NEW.KGSP.SV.W.0034.140510T1941Z-140510T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
341 PM EDT SAT MAY 10 2014

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CABARRUS COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  NORTHWESTERN UNION COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  EAST CENTRAL YORK COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 445 PM EDT

* AT 340 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
  PINEVILLE...OR 11 MILES NORTHEAST OF ROCK HILL...AND MOVING
  NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  STARMOUNT.
  SOUTHPARK MALL...FREEDOM PARK AND THE ARBORETUM.
  MCALPINE CREEK PARK...CENTER CITY CHARLOTTE AND MATTHEWS.
  EASTLAND MALL...THE PLAZA AND I-77 AT I-85.
  HIDDEN VALLEY AND MINT HILL.
  UNC CHARLOTTE.
  HARRISBURG AND CHARLOTTE MOTOR SPEEDWAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL
AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER
INSIDE AN INTERIOR ROOM.

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING EXTREMELY HEAVY RAINFALL.
FLOODING OF DRAINAGE DITCHES AND LOW LYING AREAS MAY OCCUR. DO NOT
DRIVE THROUGH AREAS WHERE WATER IS FLOWING OVER THE ROAD.

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 3519 8050 3518 8049 3498 8082 3500 8085
      3504 8088 3505 8089 3501 8090 3496 8087
      3494 8088 3507 8109 3515 8103 3516 8101
      3518 8100 3551 8074 3530 8042
TIME...MOT...LOC 1942Z 223DEG 28KT 3508 8090

$$
JOH
3 follow-up statements
740 
WWUS52 KGSP 102007
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
407 PM EDT SAT MAY 10 2014

NCC025-119-179-SCC091-102045-
/O.CON.KGSP.SV.W.0034.000000T0000Z-140510T2045Z/
CABARRUS NC-MECKLENBURG NC-UNION NC-YORK SC-
407 PM EDT SAT MAY 10 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
UNION...MECKLENBURG AND CABARRUS COUNTIES IN THE PIEDMONT OF NORTH
CAROLINA...AND EAST CENTRAL YORK COUNTY IN UPSTATE SOUTH CAROLINA
UNTIL 445 PM EDT...

AT 404 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
HARRISBURG...OR 6 MILES SOUTH OF CONCORD...MOVING NORTHEAST AT 30
MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF CABARRUS...
EAST CENTRAL YORK...MECKLENBURG AND NORTHWESTERN UNION COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL
AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER
INSIDE AN INTERIOR ROOM.

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING EXTREMELY HEAVY RAINFALL.
FLOODING OF DRAINAGE DITCHES AND LOW LYING AREAS MAY OCCUR. DO NOT
DRIVE THROUGH AREAS WHERE WATER IS FLOWING OVER THE ROAD.

&&

LAT...LON 3519 8050 3518 8049 3498 8082 3500 8085
      3504 8088 3505 8089 3501 8090 3496 8087
      3494 8088 3507 8109 3515 8103 3516 8101
      3518 8100 3551 8074 3530 8042
TIME...MOT...LOC 2008Z 231DEG 28KT 3533 8057

$$

RWH
107 
WWUS52 KGSP 102035
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
435 PM EDT SAT MAY 10 2014

SCC091-102045-
/O.CAN.KGSP.SV.W.0034.000000T0000Z-140510T2045Z/
YORK SC-
435 PM EDT SAT MAY 10 2014

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL YORK COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THIS AREA.

LAT...LON 3519 8050 3518 8049 3498 8082 3500 8085
      3511 8094 3505 8103 3506 8106 3509 8106
      3511 8104 3513 8105 3516 8101 3551 8074
      3530 8042
TIME...MOT...LOC 2035Z 218DEG 37KT 3513 8072

$$

NCC025-119-179-102045-
/O.CON.KGSP.SV.W.0034.000000T0000Z-140510T2045Z/
CABARRUS NC-MECKLENBURG NC-UNION NC-
435 PM EDT SAT MAY 10 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
UNION...MECKLENBURG AND CABARRUS COUNTIES IN THE PIEDMONT OF NORTH
CAROLINA UNTIL 445 PM EDT...

AT 433 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
MATTHEWS...OR 10 MILES SOUTHEAST OF CENTER CITY CHARLOTTE...MOVING
NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  CENTER CITY CHARLOTTE...UNC CHARLOTTE...CONCORD...HEMBY BRIDGE...
  THE PLAZA...EASTLAND MALL...I-77 AT I-85...MINT HILL...HIDDEN
  VALLEY...MIDLAND...HARRISBURG...CHARLOTTE MOTOR SPEEDWAY...
  NORTHLAKE MALL...I-85 AT HIGHWAY 73...CROFT AND CODDLE CREEK
  RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BRIEF DAMAGING WINDS WILL BLOW DOWN TREES AND POWER LINES OVER SMALL
AREAS. A BRIEF PERIOD OF LARGE HAIL IS ALSO POSSIBLE. SEEK SHELTER
INSIDE AN INTERIOR ROOM.

THIS SEVERE THUNDERSTORM IS ALSO PRODUCING EXTREMELY HEAVY RAINFALL.
FLOODING OF DRAINAGE DITCHES AND LOW LYING AREAS MAY OCCUR. DO NOT
DRIVE THROUGH AREAS WHERE WATER IS FLOWING OVER THE ROAD.

&&

LAT...LON 3519 8050 3518 8049 3498 8082 3500 8085
      3511 8094 3505 8103 3506 8106 3509 8106
      3511 8104 3513 8105 3516 8101 3551 8074
      3530 8042
TIME...MOT...LOC 2035Z 218DEG 37KT 3513 8072

$$

RWH
060 
WWUS52 KGSP 102043
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
443 PM EDT SAT MAY 10 2014

NCC025-119-179-102053-
/O.EXP.KGSP.SV.W.0034.000000T0000Z-140510T2045Z/
CABARRUS NC-MECKLENBURG NC-UNION NC-
443 PM EDT SAT MAY 10 2014

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN UNION...
MECKLENBURG AND CABARRUS COUNTIES IN THE PIEDMONT OF NORTH CAROLINA
WILL EXPIRE AT 445 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LEVELS.

LAT...LON 3519 8050 3518 8049 3498 8082 3500 8085
      3511 8094 3505 8103 3506 8106 3509 8106
      3511 8104 3513 8105 3516 8101 3551 8074
      3530 8042
TIME...MOT...LOC 2043Z 218DEG 37KT 3519 8066

$$

RWH

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 May 10, 3:18 PM EDT, 23 minutes earlier.

Area forecast discussion, May 10, 3:18 PM EDT, 23 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
318 PM EDT SAT MAY 10 2014

.SYNOPSIS...
BERMUDA HIGH PRESSURE WILL STRENGTHEN OVER THE SOUTHEAST SUNDAY
THROUGH TUESDAY. A STRONG LOW PRESSURE SYSTEM MOVING EAST FROM THE
PLAINS WILL BRING A COLD FRONT TO THE AREA BY THURSDAY...WITH A
SIGNIFICANT COOLDOWN EXPECTED LATE WEEK INTO THE WEEKEND.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
AS OF 230 PM...AS EXPECTED...CONVECTION HAS EXPLODED ACRS THE
PIEDMONT FROM NE GA INTO THE SW NC PIEDMONT...WHERE CAPE VALUES OF
1500-2000 J/KG WERE ANALYZED BY THE LAPS. STORMS ARE REACHING
MARGINAL CORE HEIGHTS (55 DBZ NEAR 22 KFT) WHICH MAY BE ENUF TO
PRODUCE 1" HAIL AND DAMAGING WIND GUSTS. OVERALL...STILL EXPECT
MAINLY SUB-SEVERE STORMS AND SHOWERS WITH BRIEF TORRENTIAL DOWNPOURS
AND GUSTY WINDS. THE CELLS SEEM TO HAVE ENUF MOVEMENT TO LIMIT HEAVY
RAIN/FLOODING THREAT. CONVECTION SHUD WANE FAIRLY QUICKLY WITH LOSS
OF HEATING...AS ATMOSPHERE WILL BE WORKED OVER AND AN UPPER
SHORTWAVE WILL EXIT TO THE EAST.

OVERNIGHT...THE NAM AND GFS FCST SNDGS SHOW PLENTY OF MID LVL AND
UPR LVL DRYING BEHIND A PASSING SHORTWAVE...WHILE THE LLVLS REMAIN
MOIST. A COLD FRONT APPEARS TO WASH OUT TO THE NORTH OF THE
CWFA...SO WINDS WILL REMAIN LIGHT OR CALM AS WELL. GUIDANCE MAY BE
UNDERDONE ON FOG POTENTIAL. CERTAINLY IF SKIES CAN CLEAR EARLY
ENUF...THERE MAY BE AREAS OF FOG...POSSIBLY DENSE. TEMPS ARE FCST TO
FALL INTO THE 50S MTNS AND LWR 60S...WHICH IS WELL BELOW THE CURRENT
DWPTS.

SUNDAY...THE 500 MB HIGH BEGINS TO REASSERT ITSELF ACRS THE
SOUTHEAST STATES...WITH A BERMUDA HIGH TO THE EAST. OUR AREA SEEMS
TO BE IN BETWEEN THE BETTER MOISTURE TO SOUTH AND STRONGER
SUBSIDENCE AND DRIER AIR TO THE NORTH. THE NAM HAS PLENTY OF BL
MOISTURE ACRS THE AREA WITH A LIGHT SE FLOW. WHILE THE GFS IS ON
AVERAGE ABOUT 5 DEG LOWER OF DWPTS AND HAS A WEAK SW/W FLOW. THIS
RESULTS IN MORE CAPE ON THE NAM...ESP ACRS THE PIEDMONT.
HOWEVER...EVEN WITH THE INCREASED CAPE...THE NAM DOES NOT LOOK TOO
EXCITED ABOUT CONVECTION. I OPTED TO ONLY MAKE MINOR TWEAKS TO THE
POPS INHERITED FROM LAST NIGHT. STILL EXPECT AT LEAST ISOLD SHWRS
AND TSTMS...PERHAPS A LITTLE BETTER COVERAGE IN THE MTNS WHERE
DIFFERENTIAL MTN HEATING SHUD PROVIDE BEST TRIGGERING. TEMPS ARE
EXPECTED TO REBOUND INTO THE UPR 70S TO LWR 80S...AND MID 80S ACRS
THE PIEDMONT.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH TUESDAY/...
AS OF 300 PM EDT SATURDAY...A PROMINENT 588 DM H5 RIDGE WILL BE IN
PLACE ACROSS THE SOUTHEAST ON MONDAY...WITH A HIGH AMPLITUDE PATTERN
FIRMLY IN PLACE BETWEEN A DEEP CENTRAL CONUS TROUGH AND EAST COAST
RIDGE BY TUE. DESPITE THE RIDGING AND RESULTANT MID LEVEL
INVERSION...PERSISTENT LOW LEVEL SRLY UPSLOPE FLOW SHOULD PROVIDE
TRIGGERING ACROSS THE MTNS. WILL THUS FEATURE MAINLY SCATTERED
DIURNAL CONVECTION MON AND TUE AFTN...WITH A FOCUS IN THE MTNS.
EXPECT WARM TEMPS THROUGH THE PERIOD.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF 300 PM EDT SATURDAY...UPPER DIVERGENCE AND IMPROVING SRLY FLOW
WILL AID CONVECTIVE COVERAGE STARTING WED...AND A MORE NON DIURNAL
NATURE IS EXPECTED GIVEN THE APPROACHING HIGH AMPLITUDE TROUGH AND
ASSOCIATED SURFACE FRONT. THE DEEPEST FORCING AND MOISTURE SHOULD
ARRIVE THU AS A BROAD AREA OF STRONG Q VECTOR CONVERGENCE CROSSES
THE REGION...ESPECIALLY DURING THE AFTN/EVENING HOURS. THIS COULD
LEAD TO STRONG TO SEVERE CONVECTION...BUT THE TIMING REMAINS
SOMEWHAT UNCERTAIN. IN ADDITION...MOST OF THE MODELS STILL DEPICT A
TROPICAL FEATURE MOVING NWD FROM THE FL COASTAL WATERS TO THE
CAROLINA COASTAL WATERS THU. THIS SHOULD REMAIN EAST OF THE AREA.

THE DEEP ERN TROUGH WILL PERSIST FRI THROUGH SAT...BUT WITH DRIER
AIR AND COOLER TEMPERATURES ARRIVING. ADDITIONAL ENERGY ROUNDING THE
TROUGH WILL BE HARD TO TIME...BUT THE BEST CONSENSUS FOR THE NEXT
VORT LOBE AND ASSOC MOISTURE APPEARS ON SAT...AND THERE MAY BE SOME
LOW LEVEL WAVE FORMATION ALONG A BAROCLINIC ZONE. WILL FEATURE LOW
END CHC GIVEN THE STEEP LAPSE RATES UNDER THE TROUGH.

&&

.AVIATION /19Z SATURDAY THROUGH THURSDAY/...
AT KCLT...AS WITH THE 15Z AMD...EXPECT SHRA AND TSRA TO START
DEVELOPING AND/OR MOVING INTO THE CLT AREA WITHIN THE NEXT COUPLE
HOURS...WITH MAX COVERAGE EXPECTED TO BE IN THE 19-22Z TIME FRAME.
LIKE YESTERDAY...EXPECT BRIEF TORRENTIAL DOWNPOURS...LIGHTNING...AND
GUSTY WINDS WITH ANY STORMS THAT IMPACT THE TERMINAL DIRECTLY. FROM
THERE...COVERAGE SHUD WANE FAIRLY QUICKLY UPON SUNSET...AS INSTBY
WANES. GUIDANCE SHOWS PLENTY OF DRYING OF THE MID AND UPR LVLS
OVERNIGHT...BUT LINGERING LLVL MOISTURE. SO THERE MAY BE SOME PATCHY
FOG DEVELOPMENT. GUIDANCE IS NOT IN GOOD AGREEMENT ON VSBY
RESTRICTIONS AT KCLT. FOR NOW...WILL GO WITH A COUPLE HOURS OF MVFR
VSBY AROUND DAYBREAK. HIGH PRES BUILDS IN ON SUNDAY...SO EXPECTING
ONLY ISOLD CONVECTION ACRS THE PIEDMONT SUNDAY AFTN. WINDS WILL
FAVOR SW THRU THIS EVENING...EXCEPT VRB NEAR TS. THEN GOING CALM OR
LGT/VRB THIS EVENING THRU SUNDAY MORNING.

ELSEWHERE...AS EXPECTED...CONVECTION HAS REALLY STARTED TO TAKE OFF
ACRS THE UPSTATE. GIVEN THE CURRENT COVERAGE...WILL HAVE VCTS AND
TEMPO TSRA AT ALL THREE UPSTATE TAF SITES. CONVECTION SHUD START TO
DIMINISH AND HEAD EAST OF THE TERMINALS BY LATE AFTN/EARLY EVENING
GUSTY WINDS AND BRIEF MVFR OR EVEN IFR RESTRICTIONS CAN BE EXPECTED
WITH ANY DIRECT IMPACTS. THERE IS LESS INSTBY AT KAVL AND KHKY...SO
EXPECTING MAINLY SHRA THRU THE REST OF THE AFTN. THE MID AND UPR
LVLS WILL BEGIN TO DRY OUT THIS EVENING...BUT LLVL MOISTURE WILL
LINGER THRU THE OVERNIGHT. WINDS SHUD GO CALM OR LGT/VRB AT PRETTY
MUCH ALL TAF SITES. WITH THE MOIST BOUNDARY LAYER...THERE MAY BE
PATCHY FOG DEVELOPMENT. SO SOME VSBY RESTRICTIONS WERE ADDED TO ALL
TAF SITES LATE TONIGHT THRU DAYBREAK SUNDAY. THE BEST CHANCES FOR
FOG WILL BE IN THE WEST (KAVL AND KAND)...AS THEY WILL CLEAR
EARLIEST. VFR CONDITIONS ARE EXPECTED NOT LONG AFTER SUNRISE...WITH
MOSTLY CLEAR SKIES. HIGH PRES BUILDING IN SHUD LIMIT CONVECTION TO
MAINLY ISOLD IN THE PIEDMONT AND WIDELY SCATTERED IN THE MTNS SUNDAY
AFTN.

OUTLOOK...HIGH PRESSURE RETURNS SUNDAY AND MONDAY...BUT AFTERNOON
AND EVENING CONVECTION WILL BE POSSIBLE BOTH DAYS. WEDNESDAY AND
THURSDAY FEATURE A SLOW MOVING COLD FRONT...YIELDING A BETTER CHANCE
OF RESTRICTIONS IN PROLONGED PRECIPITATION.

CONFIDENCE TABLE...

            19-01Z        01-07Z        07-13Z        13-19Z
KCLT       HIGH 100%     HIGH 100%     HIGH  91%     HIGH 100%
KGSP       HIGH 100%     HIGH 100%     HIGH 100%     HIGH  96%
KAVL       HIGH 100%     HIGH  94%     HIGH  83%     HIGH  96%
KHKY       HIGH 100%     HIGH  94%     HIGH  80%     HIGH 100%
KGMU       HIGH 100%     HIGH 100%     HIGH 100%     HIGH  96%
KAND       HIGH 100%     HIGH 100%     HIGH  90%     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...HG
NEAR TERM...ARK
SHORT TERM...HG
LONG TERM...HG
AVIATION...ARK
Hazardous weather outlook, May 10, 3:40 PM EDT, 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
340 PM EDT SAT MAY 10 2014

GAZ010-017-NCZ033-048>053-058-059-062>065-501>510-SCZ001>003-111945-
RABUN-HABERSHAM-AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-
GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-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-
340 PM EDT SAT MAY 10 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MOUNTAINS OF NORTHEAST
GEORGIA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED TO SCATTERED THUNDERSTORMS WILL AFFECT THE MOUNTAINS
THROUGH THE LATE AFTERNOON AND EVENING HOURS. A FEW CLOUD TO
GROUND LIGHTNING STRIKES WILL BE POSSIBLE.

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

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

.SPOTTER INFORMATION STATEMENT...

NONE.

GAZ018-026-028-029-NCZ035>037-056-057-068>072-082-SCZ004>014-019-
111945-
STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-
CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
340 PM EDT SAT MAY 10 2014

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED TO NUMEROUS THUNDERSTORMS WILL DEVELOP ACROSS THE
FOOTHILLS AND PIEDMONT OF THE WESTERN CAROLINAS AND NORTHEAST
GEORGIA LATE THIS AFTERNOON INTO THIS EVENING. SEVERAL OF THESE
THUNDERSTORMS MAY PRODUCE LARGE HAIL AND BRIEFLY DAMAGING WIND
GUSTS. LOCALLY VERY HEAVY RAINFALL MAY LEAD TO MINOR FLOODING OF
POOR DRAINAGE AREAS...AND FREQUENT CLOUD TO GROUND LIGHTNING
STRIKES CAN BE EXPECTED.

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

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

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE ASKED TO RELAY HAIL...WIND DAMAGE...OR FLOODING
REPORTS TO THE NATIONAL WEATHER SERVICE.

HG

In the hours before

Local storm report, May 10, 2:16 PM EDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
216 PM EDT SAT MAY 10 2014

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

0215 PM     HAIL             SIMPSONVILLE            34.73N  82.26W
05/10/2014  E0.75 INCH       GREENVILLE         SC   PUBLIC

            PUBLIC REPORT OF DIME SIZE HAIL.

&&

HG
Local storm report, May 10, 2:22 PM EDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
222 PM EDT SAT MAY 10 2014

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

0218 PM     HAIL             SIMPSONVILLE            34.73N  82.26W
05/10/2014  E0.75 INCH       GREENVILLE         SC   TRAINED SPOTTER

            SPOTTER REPORT OF DIME SIZE HAIL ON SOUTH MAIN STREET.

&&

HG
Special weather statement, May 10, 2:22 PM EDT, 1 hour 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
222 PM EDT SAT MAY 10 2014

NCZ071-072-082-101900-
CABARRUS-MECKLENBURG-UNION-
222 PM EDT SAT MAY 10 2014

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN UNION...MECKLENBURG
AND SOUTH CENTRAL CABARRUS COUNTIES IN THE PIEDMONT OF NORTH CAROLINA
THROUGH 300 PM EDT...

AT 219 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR PINEVILLE...OR 9 MILES SOUTH OF CENTER CITY
CHARLOTTE...MOVING NORTHEAST AT 25 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  SOUTHPARK MALL...
  FREEDOM PARK...
  MCALPINE CREEK PARK...
  EASTLAND MALL...
  MINT HILL...
  HIDDEN VALLEY...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAINFALL ARE
EXPECTED WITH THIS STORM.

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.

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 3498 8078 3504 8088 3511 8094 3509 8096
      3509 8097 3539 8081 3526 8048

JOH
Local storm report, May 10, 2:47 PM EDT, 54 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
247 PM EDT SAT MAY 10 2014

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

0225 PM     HAIL             SIMPSONVILLE            34.73N  82.26W
05/10/2014  E0.75 INCH       GREENVILLE         SC   PUBLIC

            REPORT OF DIME TO PENNY HAIL ROCKY CREEK AND GEORGIA
            ROADS.

&&

HG
Local storm report, May 10, 3:27 PM EDT, 14 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
327 PM EDT SAT MAY 10 2014

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

0325 PM     HAIL             MINT HILL               35.18N  80.66W
05/10/2014  E1.00 INCH       MECKLENBURG        NC   PUBLIC

&&

HG
Local storm report, May 10, 3:30 PM EDT, 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
330 PM EDT SAT MAY 10 2014

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

0310 PM     HAIL             CHARLOTTE               35.20N  80.83W
05/10/2014  E1.00 INCH       MECKLENBURG        NC   PUBLIC

            QUARTER SIZE HAIL ON PRUITT STREET.

&&

HG

The office that day

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

IssuedProductOfficeCountiesLasted
May 10, 9:40 AM EDTSpecial Weather StatementGSPPolk50 min
May 10, 10:03 AM EDTSpecial Weather StatementGSPPolk, Rutherford42 min
May 10, 10:47 AM EDTSpecial Weather StatementGSPAlexander, Catawba, Lincoln43 min
May 10, 11:38 AM EDTSpecial Weather StatementGSPPolk, Rutherford52 min
May 10, 12:31 PM EDTSpecial Weather StatementGSPBuncombe44 min
May 10, 1:06 PM EDTSpecial Weather StatementGSPMcDowell39 min
May 10, 1:28 PM EDTSevere Thunderstorm WarningGSPCleveland, Rutherford62 min
May 10, 2:19 PM EDTSevere Thunderstorm WarningGSPCatawba, Cleveland, Gaston, Lincoln56 min
May 10, 2:22 PM EDTSpecial Weather StatementGSPMecklenburg38 min
May 10, 2:23 PM EDTSevere Thunderstorm WarningGSPCleveland, Gaston67 min
May 10, 2:26 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg64 min
May 10, 2:50 PM EDTSevere Thunderstorm WarningGSPCabarrus, Gaston, Iredell, Lincoln, Mecklenburg55 min
May 10, 3:05 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan55 min
May 10, 3:25 PM EDTSevere Thunderstorm WarningGSPCabarrus, Rowan, Union65 min
May 10, 3:30 PM EDTSevere Thunderstorm WarningGSPDavie, Rowan60 min
May 10, 3:36 PM EDTSevere Thunderstorm WarningGSPCabarrus, Davie, Iredell, Rowan54 min
May 10, 3:49 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg56 min
May 10, 4:48 PM EDTSpecial Weather StatementGSPCabarrus, Rowan, Union42 min
May 10, 1:18 PM EDTSpecial Weather StatementGSPSpartanburg42 min
May 10, 1:35 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg55 min
May 10, 2:04 PM EDTSevere Thunderstorm WarningGSPGreenville, Laurens, Spartanburg56 min
May 10, 3:07 PM EDTSevere Thunderstorm WarningGSPChester, York53 min
May 10, 4:37 PM EDTSpecial Weather StatementGSPGreenville23 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2014Severe Thunderstorm Warnings in South Carolina, 2014Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.