Alert archive / North Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 637, NWS Greenville-Spartanburg, SC

August 18, 2011Alexander County, Catawba County, Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 18, 2011, 5:52 PM EDT for Alexander County, Catawba County, Iredell County, North Carolina. It was in force for 53 min. 6 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: Aug 18, 2011, 5:52 PM EDT (21:52 UTC)
Expired: Aug 18, 2011, 6:45 PM EDT
In force: 53 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Alexander County, NC, Catawba County, NC, Iredell County, NC

The radar

The Greer radar (KGSP), 131 km from the middle of the area, began a volume at 21:53 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

Time	Report	Where	Remark
Aug 18, 6:12 PM EDT	TSTM WND GST 60	4 N Claremont, NC	LARGE MAPLE LIMBS DOWN.
Aug 18, 6:17 PM EDT	TSTM WND DMG	5 Ne Hickory, NC	TREE ACROSS SULPHER SPRINGS RD
Aug 18, 6:19 PM EDT	TSTM WND DMG	2 W Hickory, NC	POWER LINE SNAPPED 17TH ST NW
Aug 18, 6:21 PM EDT	TSTM WND DMG	2 E Claremont, NC	LARGE OAK TREE BLOCKING OLD CATAWBA RD AND ANOTHER TREE FELL ON A VEHICLE.
Aug 18, 6:22 PM EDT	HAIL 0.88	Catawba, NC
Aug 18, 6:28 PM EDT	TSTM WND DMG	4 E Claremont, NC	TREES BLOCKING ROAD NEAR HIGHWAY 70/OXFORD SCHOOL RD.

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 5 storm reports to this severe thunderstorm warning; the first came 20 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, 9.9 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 257 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1327 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: -9 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.

103 
WUUS52 KGSP 182152
SVRGSP
NCC003-035-097-182245-
/O.NEW.KGSP.SV.W.0637.110818T2152Z-110818T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
552 PM EDT THU AUG 18 2011

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN ALEXANDER COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  CATAWBA COUNTY IN THE PIEDMONT OF NORTH CAROLINA...
  SOUTHWESTERN IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 645 PM EDT

* AT 549 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 3 MILES SOUTHWEST OF
  MILLERSVILLE TO 3 MILES NORTHWEST OF LOOKOUT SHOALS LAKE TO 6 MILES
  SOUTH OF SCOTTS...OR ALONG A LINE EXTENDING FROM 8 MILES SOUTH OF
  TAYLORSVILLE TO 6 MILES WEST OF STATESVILLE...MOVING SOUTH AT 15
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  LOOKOUT SHOALS LAKE...
  ST. STEPHENS...
  HICKORY AND LONGVIEW...
  CONOVER AND CLAREMONT...
  NEWTON...
  TERRELL...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS LINE OF SEVERE THUNDERSTORMS SHOULD BE
ALERT FOR LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND
LOCALLY HEAVY RAIN CAN OCCUR WITH ANY THUNDERSTORM. SEEK SHELTER
INDOORS AWAY FROM WINDOWS AND DOORS UNTIL THE STORM PASSES.

THIS LINE OF SEVERE THUNDERSTORMS MAY CAUSE FLOODING OF ROADS WITH
POOR DRAINAGE...PARTICULARLY IN URBAN AREAS. DO NOT DRIVE YOUR
VEHICLE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER MAY BE TOO
DEEP TO ALLOW YOUR VEHICLE TO CROSS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS LIGHTNING
IS OCCURRING WITH THIS LINE OF SEVERE THUNDERSTORMS. STAY INDOORS
AWAY FROM WINDOWS. AVOID USING APPLIANCES THAT REQUIRE AN ELECTRICAL
CORD. UNPLUG EXPENSIVE ELECTRONIC EQUIPMENT.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR
AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3589 8112 3581 8088 3553 8094 3555 8099
      3557 8153 3560 8151 3571 8140 3579 8135
      3580 8133 3586 8134 3590 8132
TIME...MOT...LOC 2152Z 001DEG 14KT 3580 8122 3580 8112
          3575 8099

$$

RWH

2 follow-up statements

054 
WWUS52 KGSP 182217
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
617 PM EDT THU AUG 18 2011

NCC003-035-097-182245-
/O.CON.KGSP.SV.W.0637.000000T0000Z-110818T2245Z/
ALEXANDER NC-CATAWBA NC-IREDELL NC-
617 PM EDT THU AUG 18 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHWESTERN IREDELL...CATAWBA AND SOUTHERN ALEXANDER COUNTIES...

AT 614 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE 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 3 MILES SOUTHEAST OF HICKORY
TO CLAREMONT TO 5 MILES EAST OF LOOKOUT SHOALS LAKE...OR ALONG A LINE
EXTENDING FROM 3 MILES SOUTHEAST OF HICKORY TO 5 MILES NORTHEAST OF
NEWTON TO 7 MILES WEST OF STATESVILLE...MOVING SOUTH AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CATAWBA...
  NEWTON...
  MAIDEN...TERRELL AND COOKSVILLE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PEOPLE IN THE PATH OF THIS STORM SHOULD BE ALERT FOR LARGE HAIL AND
DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY RAIN CAN OCCUR
WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM PASSES.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS LIGHTNING
IS OCCURRING WITH THIS STORM. STAY INDOORS AWAY FROM WINDOWS. AVOID
USING APPLIANCES THAT REQUIRE AN ELECTRICAL CORD. UNPLUG EXPENSIVE
ELECTRONIC EQUIPMENT.

THIS STORM MAY CAUSE FLOODING OF ROADS WITH POOR DRAINAGE...
PARTICULARLY IN URBAN AREAS. DO NOT DRIVE YOUR VEHICLE INTO AREAS
WHERE WATER COVERS THE ROAD. THE WATER MAY BE TOO DEEP TO ALLOW YOUR
VEHICLE TO CROSS.

&&

LAT...LON 3589 8112 3581 8088 3553 8094 3555 8099
      3557 8153 3560 8151 3571 8140 3579 8135
      3580 8133 3586 8134 3590 8132
TIME...MOT...LOC 2217Z 001DEG 14KT 3569 8130 3569 8115
          3575 8101

$$

RWH

435 
WWUS52 KGSP 182246
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
646 PM EDT THU AUG 18 2011

NCC003-035-097-182255-
/O.EXP.KGSP.SV.W.0637.000000T0000Z-110818T2245Z/
ALEXANDER NC-CATAWBA NC-IREDELL NC-
646 PM EDT THU AUG 18 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN IREDELL...CATAWBA
AND SOUTHERN ALEXANDER COUNTIES HAS EXPIRED...

ALTHOUGH THE STORM IS NO LONGER SEVERE...FREQUENT LIGHTNING...GUSTY 
WINDS AND HEAVY RAINFALL CAN BE EXPECTED THROUGH 730 PM.

LAT...LON 3589 8112 3581 8088 3553 8094 3555 8099
      3557 8153 3560 8151 3571 8140 3579 8135
      3580 8133 3586 8134 3590 8132
TIME...MOT...LOC 2217Z 001DEG 14KT 3569 8130 3569 8115
          3575 8101

$$

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 Aug 18, 5:32 PM EDT, 20 minutes earlier.

Area forecast discussion, Aug 18, 5:32 PM EDT, 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
532 PM EDT THU AUG 18 2011

.SYNOPSIS...
A WEAK SURFACE BOUNDARY WILL ENTER THE AREA FROM THE NORTHWEST
TONIGHT AND SHOULD DISSIPATE OVER THE AREA BY FRIDAY AFTERNOON.
BERMUDA HIGH PRESSURE WILL RIDGE OVER THE AREA SATURDAY INTO SUNDAY.
A COLD FRONT WILL MOVE IN FROM THE NORTHWEST EARLY MONDAY.

&&

.NEAR TERM /THROUGH FRIDAY/...
2130 UTC UPDATE...POPS HAVE BEEN RAISED IN THE PIEDMONT PER THE
LATEST RADAR TRENDS...MAINLY NEAR KSVH IN NC...AND KGRD IN SC. SKY
AND QPF HAVE BEEN ADJUSTED ACCORDINGLY.

INSTABILITY ACROSS THE CWA WILL RANGE FROM 1000-2000 J/KG THROUGH
EARLY EVENING...WITH THE HIGHEST VALUES OVER THE MTNS AND FOOTHILLS.
SCT SHRA/TSRA SHOULD CONTINUE TO DEVELOP ACROSS THE HIGH TERRAIN AND
DRIFT EAST INTO THIS EVENING. GIVEN THE MARGINAL
INSTABILITY...RELATIVELY ELEVATED FZL AROUND 13.5 KFT...AND WEAK
WIND FIELDS...IT APPEARS THAT THE ENVIRONMENT WILL NOT FAVOR SVR
TSRA. HOWEVER...SLOW STORM MOTIONS AND PW AROUND 1.25 INCHES MAY
YIELD AREAS OF HEAVY RAIN. THE CURRENT HWO HIGHLIGHTS THE EXPECTED
CONDITIONS WELL.

DEEP CONVECTION SHOULD GRADUALLY ASH OUT WITH SUNSET THIS EVENING.
HOWEVER...THE 4KM WRF AND NAM12 INDICATES THAT CONVECTION MAY
CONTINUE OVERNIGHT AHEAD OF A WEAK CONVECTIVE DERIVED DISTURBANCE.
IN ADDITION...WEAK ELEVATED INSTABILITY WILL LINGER THROUGH SUNRISE
FRIDAY. I WILL PAINT THE WESTERN NC MTNS AND UPPER SAVANNAH RIVER
VALLEY WITH LCHC TO SCHC POPS OVERNIGHT. MIN TEMPS SHOULD RANGE FROM
L60S WITHIN THE MTN VALLEYS TO U60S EAST. FRIDAY...PATTERN WILL
CHANGE LITTLE FROM TODAY. MID LEVEL HEIGHTS WILL CONTINUE LIGHT NW
FLOW...POSSIBLY WITH EMBEDDED S/W. INSTABILITY VALUES ARE FORECAST
TO RANGE FROM 1000 TO 2000 J/KG. HOWEVER...A LAYER OF CIN WILL
LIKELY PERSIST EAST OF THE MTNS. GIVEN THE LACK OF FORCING AND
MARGINAL TEMP/DWPT PROFILES I WILL FORECAST CHC POPS OVER THE MTNS
DURING THE AFTERNOON AND EVENINGS WITH SCHC EAST. HIGH TEMPS SHOULD
VERIFY 1 TO 2 DEGREES ABOVE TODAY.

&&

.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY/...
AS OF 130 PM THURSDAY...THE SHORT TERM FCST PICKS UP AT 00Z ON
SATURDAY WITH A BROAD AREA OF UPPER LVL DIVERGENCE TO OUR NORTH AND
A DECENT H5 SHORTWAVE MOVING INTO THE AREA AT THE START OF THE
PERIOD. THE SHORTWAVE WILL PASS OVER THE CWFA EARLY SAT WITH A VERY
BRIEF PERIOD OF RISING HEIGHTS FOLLOWED BY A CONTINUATION OF THE
LONGWAVE UPPER TROF PATTERN FOR THE REMAINDER OF THE PERIOD.

ON SATURDAY...THE SFC PATTERN IS STILL SOMEWHAT SPURIOUS. MODELS
AGREE THAT OVERALL WE SHOULD BE UNDER THE GENERAL INFLUENCE OF THE
BERMUDA HIGH TO OUR EAST WITH A SOUTH TO SWLY LOW LVL FLOW...BUT THE
THE NAM AND THE ECMWF DEPICT MOSTLY LIGHT AND VARIABLE WINDS THRU
MOST OF THE DAY/EVENING. A VERY WEAK BOUNDARY IS ALSO ANTICIPATED TO
MOVE OVER THE CWFA LATE FRI/EARLY SAT BUT AT THIS POINT IT IS
BECOMING MORE DIFFICULT TO DETECT. I DID NOT MAKE ANY MAJOR CHANGES
TO THE SENSIBLE FCST AND KEPT SLIGHT TO SOLID CHANCE POPS THRU THE
DAY/EVENING WITH HIGH TEMPS WARMING A COUPLE OF DEGREES COMPARED TO
FRI.

ON SUNDAY...THE PATTERN WILL BE SIMILAR TO SAT WITH SOME WEAK LOBES
OF SHORTWAVE ENERGY PROPAGATING JUST TO OUR NORTH AND MOIST SOUTH
SWLY FLOW. THE NAM AND ECMWF TRY TO DEVELOP A SFC LOW OVER THE OH
RIVER VALLEY EARLY IN DAY AND THEN MOVE A COLD FRONT OVER THE CWFA.
THE GFS AND CANADIAN ARE NOT ON BOARD WITH THIS SOLUTION. SO..FOR THE
TIME BEING I KEPT THE FCST MOSTLY UNCHANGED FROM THE PREVIOUS
UPDATES.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
AS OF 200 PM THURSDAY...THE 12 UTC RUNS OF THE OP NAM/GFS...
F84-96H...ARE TRENDING QUICKER WITH COLD FRONTAL TRANSLATION WITH
FROPA NOW PROGGED FOR EARLY MONDAY. GIVEN THIS...THERE IS THE
POTENTIAL FOR INHERITED CHANCE POP TO BE LOWERED...ESPECIALLY
AS MONDAY WEARS ON...BUT WILL HANG ON TO VIEW THE YET TO BE POSTED
12 UTC ECMWF BEFORE DOING SO.

SFC RIDGING ALONG WITH A POST-FRONTAL AIRMASS LOOKS TO BUILD ATOP
THE REGION ON TUESDAY. FOR THE LATTER HALF OF THE EXTENDED RANGE
PERIOD WILL FAVOR THE HPC/12 UTC ECMWF SOLUTIONS FEATURING LESS
DYNAMIC UPPER LEVEL LOW DEVELOPMENT WEST OF THE CWFA THAN WHAT
THE 12 UTC OP GFS IS PROGGING AND LESS MOISTURE TRANSPORT NORTH FROM
THE GULF. BASED ON THIS REASONING...SENSIBLE WX WILL BE GENERALLY
DRY WITH DAILY MAX TEMPS SLIGHTLY BELOW CLIMO.

&&

.AVIATION /22Z THURSDAY THROUGH TUESDAY/...
AT KCLT AND ELSEWHERE...CLUSTERS OF MTN TSRA WILL GRADUALLY EXPAND
IN COVERAGE AND DRIFT EAST THIS AFTERNOON. CLEARING OVER THE
PIEDMONT SHOULD BE COMPLETE BY 19Z...RESULTING IN INCREASE
INSTABILITY AND EVENTUALLY PATCHES OF DEEP CONVECTION...REMAINING
INTO THE EARLY EVENING. I WILL INCLUDE CB AT ALL TAF SITES.
ALTHOUGH...KAVL...KGSP...KGMU WILL REMAIN IN THE HIGHEST RISK FOR A
TSRA THROUGH 1Z. MOS GUIDANCE CONSENSUS FAVORS FOG AT KAVL LATE
TONIGHT...I WILL INDICATE IFR BETWEEN 9Z TO 12Z. LIGHT SW WINDS ARE
FORECAST TO CONTINUE THROUGH 18Z FRI.

OUTLOOK...THROUGH EARLY NEXT WEEK...A SERIES OF WEAK COLD FRONTS
MOVING OVER THE AREA SHOULD RESULT IN CONTINUED DEVELOPMENT OF
ISOLATED TO WIDELY SCATTERED DIURNAL CONVECTION. MORNING FOG WILL
ALSO BE POSSIBLE...ESP IN MTN VALLEYS.

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...JPT
NEAR TERM...JAT/NED
SHORT TERM...JPT
LONG TERM...CSH
AVIATION...NED

Hazardous weather outlook, Aug 18, 2:54 PM EDT, 2 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
254 PM EDT THU AUG 18 2011

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-191900-
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-
254 PM EDT THU AUG 18 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

A FEW STRONG THUNDERSTORMS WILL BE SEEN INTO THIS EVENING...PRODUCING
LOCALLY HEAVY RAINFALL AND FREQUENT CLOUD TO GROUND LIGHTNING.
VERY LOCALIZED GUSTY WIND AND HAIL IS POSSIBLE AS WELL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Special weather statement, Aug 18, 3:05 PM EDT, 2 hours 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
305 PM EDT THU AUG 18 2011

NCZ505-507-508-181945-
GREATER RUTHERFORD-MCDOWELL MOUNTAINS-RUTHERFORD MOUNTAINS-
305 PM EDT THU AUG 18 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN RUTHERFORD AND
SOUTHWESTERN MCDOWELL COUNTIES THROUGH 345 PM EDT...

AT 300 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTH OF OLD FORT...OR 11 MILES SOUTHWEST
OF MARION...MOVING SOUTHEAST AT 10 MPH.

THIS STORM WILL BE NEAR...
  LAKE LURE...

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

LAT...LON 3560 8203 3554 8208 3553 8203 3555 8200
      3544 8188 3534 8208 3541 8215 3540 8219
      3548 8224 3552 8222 3553 8217 3556 8224
      3559 8229 3568 8211

RWH

Special weather statement, Aug 18, 3:45 PM EDT, 2 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
345 PM EDT THU AUG 18 2011

NCZ053-505>508-182030-
BUNCOMBE-EASTERN MCDOWELL-GREATER RUTHERFORD-MCDOWELL
MOUNTAINS-RUTHERFORD MOUNTAINS-
345 PM EDT THU AUG 18 2011

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN RUTHERFORD...
SOUTHEASTERN BUNCOMBE AND SOUTHERN MCDOWELL COUNTIES THROUGH 430 PM
EDT...

AT 342 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTH OF LAKE LURE...OR 15 MILES
SOUTHWEST OF MARION...MOVING SOUTHEAST AT 5 MPH.

THIS STORM WILL BE NEAR...
  CHIMNEY ROCK...
  LAKE LURE...

DIME SIZE HAIL...AND WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH
THIS STORM.

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 3563 8192 3550 8188 3534 8206 3541 8215
      3540 8221 3544 8228 3546 8227 3550 8233
      3549 8235 3553 8241 3570 8226

RWH

Special weather statement, Aug 18, 5:05 PM EDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
505 PM EDT THU AUG 18 2011

NCZ035-036-182145-
ALEXANDER-IREDELL-
505 PM EDT THU AUG 18 2011

...STRONG THUNDERSTORMS WILL AFFECT ALEXANDER AND IREDELL COUNTIES
THROUGH 545 PM EDT...

AT 502 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM BUCK SHOALS TO 4
MILES SOUTHEAST OF LOVE VALLEY TO HIDDENITE...MOVING SOUTHEAST AT 15
MPH.

THESE STORMS WILL BE NEAR...
  STONY POINT...
  HARMONY...
  STATESVILLE...

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

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 3606 8070 3586 8070 3570 8076 3561 8092
      3571 8100 3571 8105 3572 8107 3583 8115
      3582 8121 3591 8134 3599 8133 3600 8132
      3603 8127 3603 8108 3607 8098

RWH

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 3:05 PM EDT	Special Weather Statement	GSP	Rutherford	40 min
Aug 18, 3:45 PM EDT	Special Weather Statement	GSP	McDowell	45 min
Aug 18, 5:05 PM EDT	Special Weather Statement	GSP	Alexander, Iredell	40 min
Aug 18, 5:10 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Davie, Iredell, Rowan	65 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2011 Every severe thunderstorm 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.