Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 573, NWS Greenville-Spartanburg, SC

September 29, 20124 counties in North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 29, 2012, 2:57 PM EDT for 4 counties in North Carolina. It was in force for 63 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
Sep 29, 2012, 2:57 PM EDT (18:57 UTC)
Expired
Sep 29, 2012, 4:00 PM EDT
In force
63 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Cabarrus County, NC, Iredell County, NC, Mecklenburg County, NC, Rowan County, NC

The radar

The Roanoke radar (KFCX), 162 km from the middle of the area, began a volume at 18:58 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, 7.0 hours before the alert went out and 82 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 2012-09-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 365 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 2012-09-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
365 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
795 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
34 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.4

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KGSP 291857
SVRGSP
NCC025-097-119-159-292000-
/O.NEW.KGSP.SV.W.0573.120929T1857Z-120929T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
257 PM EDT SAT SEP 29 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CABARRUS COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  SOUTHEASTERN IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  NORTH CENTRAL MECKLENBURG COUNTY IN THE PIEDMONT OF NORTH
  CAROLINA...
  ROWAN COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 400 PM EDT

* AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM TROUTMAN TO MOORESVILLE TO LAKE
  NORMAN...AND MOVING EAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL IMPACT LOCATIONS NEAR...
  DAVIDSON AND CORNELIUS.
  CLEVELAND.
  ENOCHVILLE.
  LANDIS AND CHINA GROVE.
  KANNAPOLIS.
  CONCORD.
  SALISBURY.
  SPENCER AND GRANITE QUARRY.

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.

&&

LAT...LON 3550 8025 3550 8030 3537 8038 3544 8095
      3551 8096 3553 8094 3555 8096 3562 8093
      3564 8095 3582 8096 3577 8047 3573 8042
      3573 8034 3568 8033 3560 8023 3553 8022
TIME...MOT...LOC 1857Z 278DEG 22KT 3572 8084 3560 8083
          3551 8091

$$

HG
3 follow-up statements
809 
WWUS52 KGSP 291926
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
326 PM EDT SAT SEP 29 2012

NCC097-119-291936-
/O.CAN.KGSP.SV.W.0573.000000T0000Z-120929T2000Z/
IREDELL NC-MECKLENBURG NC-
326 PM EDT SAT SEP 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MECKLENBURG AND
SOUTHERN IREDELL COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST OF THIS 
AREA.

LAT...LON 3550 8024 3550 8030 3537 8038 3542 8076
      3550 8079 3551 8074 3566 8077 3576 8074
      3577 8047 3574 8045 3572 8034 3567 8031
      3560 8023 3553 8022
TIME...MOT...LOC 1926Z 278DEG 22KT 3565 8063 3550 8061
          3541 8071

$$

NCC025-159-292000-
/O.CON.KGSP.SV.W.0573.000000T0000Z-120929T2000Z/
CABARRUS NC-ROWAN NC-
326 PM EDT SAT SEP 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ROWAN AND
NORTHERN CABARRUS COUNTIES UNTIL 400 PM EDT...

AT 326 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 5 MILES SOUTH OF CLEVELAND TO
KANNAPOLIS TO CHARLOTTE MOTOR SPEEDWAY...MOVING EAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL IMPACT LOCATIONS NEAR...
  CONCORD.
  SALISBURY.
  SPENCER AND GRANITE QUARRY.
  ROCKWELL AND MOUNT PLEASANT.
  HIGH ROCK LAKE.

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.

&&

LAT...LON 3550 8024 3550 8030 3537 8038 3542 8076
      3550 8079 3551 8074 3566 8077 3576 8074
      3577 8047 3574 8045 3572 8034 3567 8031
      3560 8023 3553 8022
TIME...MOT...LOC 1926Z 278DEG 22KT 3565 8063 3550 8061
          3541 8071

$$

HG
328 
WWUS52 KGSP 291938
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
338 PM EDT SAT SEP 29 2012

NCC025-159-292000-
/O.CON.KGSP.SV.W.0573.000000T0000Z-120929T2000Z/
CABARRUS NC-ROWAN NC-
338 PM EDT SAT SEP 29 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN ROWAN
AND NORTHERN CABARRUS COUNTIES UNTIL 400 PM EDT...

AT 338 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM SALISBURY TO KANNAPOLIS TO
CONCORD...MOVING EAST AT 25 MPH.

SEVERE THUNDERSTORMS WILL IMPACT LOCATIONS NEAR...
  GRANITE QUARRY AND SPENCER.
  ROCKWELL.
  MOUNT PLEASANT AND HIGH ROCK LAKE.

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.

&&

LAT...LON 3550 8024 3550 8030 3537 8038 3542 8076
      3551 8064 3576 8049 3575 8045 3574 8045
      3573 8040 3571 8034 3567 8031 3560 8023
      3553 8022
TIME...MOT...LOC 1938Z 278DEG 22KT 3562 8050 3549 8051
          3540 8062

$$

HG
349 
WWUS52 KGSP 291951
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
351 PM EDT SAT SEP 29 2012

NCC025-159-292001-
/O.EXP.KGSP.SV.W.0573.000000T0000Z-120929T2000Z/
CABARRUS NC-ROWAN NC-
351 PM EDT SAT SEP 29 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ROWAN AND NORTHERN
CABARRUS COUNTIES WILL EXPIRE AT 400 PM EDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING IS WEAKENING BELOW 
SEVERE LEVELS. HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITH THESE 
THUNDERSTORMS...ESPECIALLY ACROSS EASTERN CABARRUS COUNTY.

LAT...LON 3550 8024 3550 8030 3537 8038 3542 8076
      3551 8064 3576 8049 3575 8045 3574 8045
      3573 8040 3571 8034 3567 8031 3560 8023
      3553 8022
TIME...MOT...LOC 1951Z 278DEG 22KT 3561 8040 3548 8041
          3539 8052

$$

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 Sep 29, 2:19 PM EDT, 38 minutes earlier.

Area forecast discussion, Sep 29, 2:19 PM EDT, 38 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
219 PM EDT SAT SEP 29 2012

.SYNOPSIS...
A COLD FRONT AND UPPER LEVEL TROUGH OF LOW PRESSURE WILL REMAIN
NEARLY STATIONARY ACROSS THE CAROLINAS INTO SUNDAY. A LOW PRESSURE
SYSTEM WILL THEN MOVE OUT OF THE GULF OF MEXICO LATE SUNDAY...
PROGRESSING NORTHWARD INTO MONDAY BRINGING UNSETTLED WEATHER FOR THE
EARLY PART OF THE WORK WEEK.

&&

.NEAR TERM /THROUGH SUNDAY/...
AS OF 200 PM...FOR THE 1730 UTC UPDATE...ADJUSTED POP TO TRY TO
REFLECT RADAR TRENDS. A LINE OF SHWRS AND TSTMS SLOWLY WORKING IN
ROUGHLY ALONG I-40 ATTM. DESPITE THICK MID CLOUDS AND -RA ACRS THE
SRN HALF OF THE CWFA...LAPS CAPE SHOWS SOME DESTABILIZATION. SO
CONVECTION SHUD BE ABLE TO CONTINUE TO WORK ACRS THE NC PIEDMONT.
STRONG DPVA IS CURRENTLY THE MAIN FORCING MECHANISM...AND FLOW IS
INCREASING ALOFT. SO A FEW STORMS HAVE BEEN ABLE TO GET STRONG ENUF
TO PRODUCE GUSTY WINDS AND SMALL HAIL. ONE OR TWO SEVERE STORMS
CANNOT BE RULED OUT. THE DPVA SHUD SHIFT EAST OF THE AREA BY EARLY
EVENING...AND LLVL FLOW WILL TURN N/NWLY...PUSHING IN SOME DRIER
AIR. SO POP SHUD TAPER OFF QUICKLY. A MOS BLEND FOR OVERNIGHT LOWS
LOOKS GOOD.

ON SUNDAY...MODELS IN GOOD AGREEMENT ON SIGNIFICANT DRYING OF
PROFILES ACRS THE CWFA IN DEEP NWLY FLOW. THE SFC FNT SHUD BE TO OUR
SOUTH WITH DRY NELY LLVL FLOW ACRS THE AREA. THIS WILL BE A VERY
SHORT BREAK IN THE UNSETTLED WX...HOWEVER...AS A LOW PRES SYSTEM
DEVELOPS INVOF LWR MS VLY/NW GULF. SOME CIRRUS/CIRROSTRATUS WILL
SPREAD IN BY THE AFTN. OVERALL...TEMPS WILL BE NEAR NORMAL. MODELS
HAVE BACKED OFF THE TIMING OF GULF MOISTURE/UPGLIDE WORKING BACK
INTO THE AREA AHEAD OF THE GULF SYSTEM. MODELS TEND TO BE SLOW WITH
ONSET OF PRECIP AHEAD OF CYCLOGENESIS. THE FASTEST MODEL (GFS) SEEMS
TO HAVE 700-600 MB FRONTOGENESIS BANDING ACRS NRN GA/SRN UPSTATE BY
00Z MON. WHETHER THIS FORCING WILL BE ABLE TO OVERCOME DRY LLVL AIR
BY SUNSET IS UNCERTAIN. SO HAVE JUST SOME LOW-END CHC POPS ENTERING
THE SRN FRINGE OF THE CWFA THRU 23Z.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
AS OF 330 AM SATURDAY...MODEL DIFFERENCES ARE APPARENT IMMEDIATELY
AT THE START OF THE SHORT RANGE PART OF THE FCST SUNDAY MORNING. THE
GFS HAS COME IN MUCH FASTER WITH SPREADING UPGLIDE...MOISTURE...AND
UPPER FORCING AHEAD OF THE LOW IN THE NW GULF. HOWEVER...EVEN IF THE
QUICKER TIMING OF THE GFS IS CORRECT...WE SHOULD STILL SEE SOME KIND
OF LULL EARLY SUNDAY MORNING. PREFER TO START SUNDAY DRY AND HAVE
THE FCST DETERIORATE FROM THERE USING A BLEND OF THE GFS AND NAM. IT
IS WORTH NOTING THAT A QUICK LOOK AT THE 00Z RUN OF THE ECMWF IS
SLOWER ALONG THE LINES OF THE NAM. TEMPS WILL BE TRICKY BECAUSE OF
THE ONSET OF COLD AIR DAMMING AS INDICATED BY THE GFS. CONFIDENCE IN
THIS IS NOT HIGH ENOUGH FOR ANYTHING BUT A MINOR TWEAK.

THE SYSTEM MOVES SLOW ENOUGH OUT OF THE NW GULF AND ACROSS THE MS
DELTA REGION THAT AGREEMENT IS REACHED FOR A TIME SUNDAY NIGHT AND
MONDAY. DEEP MOISTURE...ISENTROPIC LIFT...WARM ADVECTION...AND UPPER
FORCING ALL SUGGEST A LIKELY RAIN EVENT FOR THE FCST AREA BEGINNING
BY LATE SUNDAY EVENING AND CONTINUING THROUGH THE DAY MONDAY. HAVE
RAMPED THE PRECIP CHANCES UP INTO THE LIKELY RANGE SUNDAY NIGHT...
WHERE IT STAYS THROUGH MONDAY NIGHT. CONFIDENCE NOT HIGH ENOUGH TO
GO WITH A CATEGORICAL POP YET BUT WE ARE TRENDING IN THAT DIRECTION.
A WEAK SURFACE HIGH WILL BE IN POSITION TO THE NORTH TO GIVE US
WEDGE CONDITIONS ON MONDAY WITH LOW DIURNAL RANGE IN TEMPS THROUGH
MONDAY NIGHT. HAVE KEPT ON THE COOL SIDE OF GUIDANCE BUT THIS COULD
EASILY BE TOO WARM. MANY PLACES IN THE DAMMING REGION MIGHT NOT GET
OUT OF THE 60S MONDAY AFTERNOON. PRECIP AMTS ARE NOT SO HEFTY THAT
THERE IS ANY IMMEDIATE CONCERN FOR FLOODING...BUT THIS BEARS
WATCHING. THE SFC LOW MOVING TO THE WEST OF THE MTNS WILL PROBABLY
BE WHAT KEEPS MOST RAINFALL AMTS IN CHECK. THAT LOW PULLS UP INTO
THE OH VALLEY ON TUESDAY WHICH SHOULD BRING AN END TO THE HIGHER
PRECIP CHANCES BY LATE AFTERNOON AND ALLOW TEMPS TO REBOUND.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF 1205 PM SAT...THERE IS GENERAL AGREEMENT BETWEEN THE 00Z ECMWF
AND CANADIAN AND THE 06Z GFS FOR THE MEDIUM RANGE. A CLOSED UPPER
LOW OVER THE MID SOUTH TUE NITE OPENS UP AND MOVES TO THE ERN GREAT
LAKES BY WED NITE. THE BERMUDA RIDGE BRIEFLY BUILDS OFF SHORE THU
BEFORE A RELATIVELY WEAK SRN STREAM SHORT WAVE MOVES OVER THE AREA
FRI. A STRONGER NRN STREAM SHORT WAVE MOVES ACROSS THE NRN TIER OF
THE CONUS SAT. AT THE SFC...SEASONAL AND DRY HIGH PRESSURE BUILDS IN
BEHIND THE DEPARTING SFC LOW AND ASSOCIATED SFC FRONT. THE HIGH
REMAINS CENTERED OVER THE AREA THU...THEN WEAKENS FRI AS A FRONT
APPROACHES FROM THE NW AND MOISTURE MOVES TOWARD THE AREA FROM THE
SOUTH. THE GUIDANCE DEVIATES A LITTLE HERE WITH THE ECMWF MORE
AGGRESSIVE THEN THE GFS WITH THE NORTHWARD MOVEMENT OF THE GULF AND
ATLANTIC MOISTURE. THE THE GEFS MEAN SHOWS SOME VERY LOW END PRECIP
POTENTIAL FRIDAY WHILE THE OPS GFS IS DRY. THE MDLS THEN RETURN TO
DECENT AGREEMENT WITH PRECIP DEVELOPING BEHIND THE APPROACHING FRONT
WHICH MOVES INTO THE AREA ON SAT. HAVE GONE WITH DECREASING POP WED
WITH A DRY FCST THRU FRI. SLIGHT CHC POP SLOWLY SPREADS INTO THE
AREA FROM THE NW AND SE FRI NITE AND REMAINS OVER THE AREA SAT.
TEMPS WILL GENERALLY BE NEAR TO SLIGHTLY ABOVE NORMAL UNTIL SAT WHEN
THE FALL SLIGHTLY BELOW NORMAL.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
AT KCLT...DESPITE OVC100...THE AREA IS DESTABILIZING AHEAD OF AN E-W
ORIENTED LINE OF CONVECTION THAT IS SLOWLY DRIFTING SE. SOME OF THIS
ACTIVITY IS EXPECTED TO REACH KCLT AFTER 20Z...THEN PUSH OUT OF THE
AREA BY AROUND 00Z. A TEMPO GROUP FOR TS STILL LOOKS GOOD.
OTHERWISE...VFR WITH LGT WIND...FAVORING A SLY DIR UNTIL THE
CONVECTION PASSES BY IN THE 20-22Z TIME FRAME. OVERNIGHT...A FNTL
BNDRY WILL SAG SOUTH OF THE AREA...USHERING IN DRIER AIR FROM THE
NORTH. SOME OF THE GUIDANCE IS HINTING THAT THE BL WILL REMAIN MOIST
ENUF FOR SOME PATCHY FOG AND/OR STRATUS. USUALLY...CONDITIONS STAY
VFR BEHIND A BACKDOOR COLD FRONT. SO I DID NOT GO TOO PESSIMISTIC.
SUNDAY LOOKS VFR WITH CONTINUED NE WIND.

ELSEWHERE...A LINE OF SHRA/TSRA TO AFFECT KAVL AND KHKY WITHIN NEXT
HOUR. BEHIND THE LINE...A SCATTERED SHRA AND TSRA WILL CONTINUE TO
DEVELOP THRU REST OF AFTN. THE UPSTATE LOOKS LESS LIKELY TO SEE TS
ACTIVITY...BUT STILL DECENT COVERAGE OF -RA/SHRA. PRECIP WILL WANE
FAIRLY QUICKLY THIS EVENING...AS THE FNTL BNDRY SAGS SOUTH OF THE
AREA AND DRIER AIR WORKS IN FROM THE NORTH. GUIDANCE SHOWING SOME
LINGERING BL MOISTURE...SO HAVE SOME THREAT FOR PATCHY FOG/STRATUS
WHERE MIXING IS AT A MINIMUM. FLOW WILL BE UP THE FRENCH BROAD
VALLEY...SO DIFFICULT TO SAY HOW MUCH IF ANY RESTRICTIONS AT KAVL.
VFR CONDITIONS ARE EXPECTED SUNDAY WITH LIGHT NELY FLOW THRU MIDDAY.

OUTLOOK...A FAIRLY STRONG LOW PRESSURE SYSTEM WILL DEVELOP ACROSS
THE DEEP SOUTH LATE IN THE WEEKEND INTO MONDAY. MOISTURE IS EXPECTED
TO QUICKLY RETURN SUNDAY NIGHT...WITH PERIODS OF LOW CEILINGS AND
RAINFALL LIKELY ACROSS THE REGION INTO MID WEEK.

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...PAT
NEAR TERM...ARK
SHORT TERM...PM
LONG TERM...PM
AVIATION...ARK
Hazardous weather outlook, Sep 29, 6:19 AM EDT, 8 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
619 AM EDT SAT SEP 29 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-301030-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
619 AM EDT SAT SEP 29 2012

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

.DAY ONE...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS WILL DEVELOP AGAIN THROUGH THIS EVENING.
SOME OF THE THUNDERSTORMS WILL BE STRONG THIS AFTERNOON WITH THE
POTENTIAL TO PRODUCE DAMAGING WIND GUSTS AND HAIL. THE OTHER MAIN
THREAT WILL BE CLOUD-TO-GROUND LIGHTNING. MOST OF THE STRONG
STORMS WILL FORM OVER THE PIEDMONT. THE STORMS SHOULD TAPER OFF
AND MOVE TO THE EAST LATE THIS EVENING.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Sep 29, 1:24 PM EDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
124 PM EDT SAT SEP 29 2012

NCZ049-053-505>508-291815-
BUNCOMBE-EASTERN MCDOWELL-GREATER RUTHERFORD-MCDOWELL
MOUNTAINS-RUTHERFORD MOUNTAINS-YANCEY-
124 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT BUNCOMBE...MCDOWELL...
NORTHWESTERN RUTHERFORD AND SOUTHEASTERN YANCEY COUNTIES THROUGH 215
PM EDT...

AT 124 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM MOUNT MITCHELL STATE
PARK TO 4 MILES SOUTHEAST OF WEAVERVILLE...MOVING SOUTHEAST AT 25
MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  BUSICK...
  SWANNANOA...
  FAIRVIEW...
  OLD FORT...
  MARION...
  CHIMNEY ROCK...

PEA SIZE HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS.

LAT...LON 3567 8185 3559 8183 3558 8181 3554 8180
      3540 8226 3541 8228 3544 8228 3547 8227
      3550 8233 3547 8237 3566 8270 3582 8226

RWH
Special weather statement, Sep 29, 1:43 PM EDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
143 PM EDT SAT SEP 29 2012

NCZ035-036-056-502-504-291830-
ALEXANDER-CATAWBA-GREATER BURKE-GREATER CALDWELL-IREDELL-
143 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT CENTRAL IREDELL...EASTERN
BURKE...NORTHERN CATAWBA...SOUTHEASTERN CALDWELL AND SOUTHERN
ALEXANDER COUNTIES THROUGH 230 PM EDT...

AT 140 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM HIDDENITE TO 3 MILES
EAST OF BETHLEHEM TO HILDEBRAN TO VALDESE...MOVING EAST AT 25 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  ICARD...
  STONY POINT...
  LOOKOUT SHOALS LAKE...
  CONOVER...
  CLAREMONT...
  NEWTON...

PEA SIZE HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS.

LAT...LON 3593 8070 3573 8074 3569 8077 3562 8077
      3564 8121 3571 8179 3595 8142

RWH
Special weather statement, Sep 29, 2:28 PM EDT, 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
228 PM EDT SAT SEP 29 2012

NCZ065-068-504>508-291915-
CLEVELAND-EASTERN MCDOWELL-GREATER BURKE-GREATER
RUTHERFORD-HENDERSON-MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-
228 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN HENDERSON...
NORTHWESTERN CLEVELAND...RUTHERFORD...SOUTHEASTERN MCDOWELL AND
SOUTHERN BURKE COUNTIES THROUGH 315 PM EDT...

AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 5 MILES NORTHWEST OF
PLEASANT GROVE TO BAT CAVE...MOVING EAST AT 25 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  DYSARTSVILLE...
  CHIMNEY ROCK...
  THERMAL CITY...
  RUTHERFORDTON...
  CASAR...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3567 8144 3556 8154 3555 8151 3545 8147
      3539 8148 3530 8191 3535 8208 3541 8215
      3540 8226 3545 8246 3547 8242 3546 8237
      3550 8233 3546 8225 3552 8223 3553 8218
      3555 8220 3572 8166

RWH
Special weather statement, Sep 29, 2:30 PM EDT, 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
230 PM EDT SAT SEP 29 2012

NCZ036-056-057-069-071-072-291915-
CABARRUS-CATAWBA-IREDELL-LINCOLN-MECKLENBURG-ROWAN-
230 PM EDT SAT SEP 29 2012

...STRONG THUNDERSTORMS WILL AFFECT CATAWBA...NORTHERN LINCOLN...
NORTHERN MECKLENBURG...NORTHWESTERN CABARRUS...ROWAN AND SOUTHERN
IREDELL COUNTIES THROUGH 315 PM EDT...

AT 227 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 3 MILES NORTH OF
MOUNT ULLA TO 4 MILES NORTHEAST OF VALE...MOVING EAST AT 35 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  MAIDEN...
  TERRELL...
  SALISBURY...
  SPENCER...
  HIGH ROCK LAKE...
  LANDIS...

PEA SIZE HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE
EXPECTED WITH THESE STORMS.

LAT...LON 3539 8084 3556 8154 3576 8137 3582 8114
      3578 8111 3584 8106 3587 8093 3570 8032
      3564 8029 3558 8020 3555 8020

RWH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 29, 1:24 PM EDTSpecial Weather StatementGSPBuncombe, McDowell51 min
Sep 29, 1:43 PM EDTSpecial Weather StatementGSPAlexander, Burke, Catawba, Iredell47 min
Sep 29, 2:28 PM EDTSpecial Weather StatementGSPRutherford47 min
Sep 29, 2:30 PM EDTSpecial Weather StatementGSPCatawba, Iredell, Lincoln, Rowan45 min
Sep 29, 3:11 PM EDTSpecial Weather StatementGSPCleveland, Henderson, Polk, Rutherford49 min
Sep 29, 3:18 PM EDTSevere Thunderstorm WarningGSPHenderson, Polk57 min
Sep 29, 3:55 PM EDTSpecial Weather StatementGSPCabarrus35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2012Every severe thunderstorm warning in 2012

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.