Alert archive / North Carolina / Flash Flood Warnings in 2012

Flash Flood Warning 11, NWS Greenville-Spartanburg, SC

July 21, 2012Iredell County, North Carolina

NWS Greenville-Spartanburg, SC issued this flash flood warning at Jul 21, 2012, 7:11 PM EDT for Iredell County, North Carolina. It was in force for 60 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 21, 2012, 7:11 PM EDT (23:11 UTC)
Expired: Jul 21, 2012, 8:11 PM EDT
In force: 60 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon
Flood severity: None

County Iredell County, NC

The radar

The Roanoke radar (KFCX), 141 km from the middle of the area, began a volume at 23:10 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 12:00Z, 11.2 hours before the alert went out and 84 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: 679 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 870 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 69 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.

978 
WGUS52 KGSP 212311
FFWGSP
NCC097-220200-
/O.NEW.KGSP.FF.W.0011.120721T2311Z-120722T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
711 PM EDT SAT JUL 21 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EAST CENTRAL IREDELL COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 1000 PM EDT

* AT 709 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SERIES OF THUNDERSTORMS MOVING EASTWARD ALONG THE INTERSTATE 40 
CORRIDOR EAST OF STATESVILLE. THESE THUNDERSTORMS WERE PRODUCING 
RAINFALL AT RATES IN EXCESS OF 2 INCHES PER HOUR...AND THIS HEAVY 
RAINFALL MAY CONTINUE THROUGH 8 PM. 

* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO   
OCCUR...ESPECIALLY IN LOW LYING AREAS NEAR INTERSTATE 40 EAST OF 
STATESVILLE. FLASH FLOODING IS ALSO LIKELY ALONG FOURTH CREEK AND 
BEAVER CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. TURN AROUND AND FIND ANOTHER ROUTE.

TO REPORT HIGH WATER...FLOODING...MUDSLIDES...LANDSLIDES OR OTHER
SEVERE WEATHER THROUGH OUR AUTOMATED REPORTING SYSTEM...CALL OUR TOLL
FREE NUMBER... 1 8 7 7...6 3 3...6 7 7 2.

&&

LAT...LON 3586 8070 3576 8074 3574 8078 3576 8083
      3583 8086 3585 8083 3589 8074

$$

HG

2 follow-up statements

185 
WGUS72 KGSP 212354
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
754 PM EDT SAT JUL 21 2012

NCC097-220200-
/O.CON.KGSP.FF.W.0011.000000T0000Z-120722T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IREDELL NC-
754 PM EDT SAT JUL 21 2012

...FLASH FLOOD WARNING REMAINS IN EFFECT FOR EAST CENTRAL IREDELL
COUNTY UNTIL 1000 PM EDT...

AT 750 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
THAT THE THUNDERSTORMS PRODUCING HEAVY RAINFALL HAD MOVED EAST OF 
IREDELL COUNTY. RADAR ESTIMATES THAT 2 TO 3 INCHES OF RAIN FELL OVER 
THE INTERSTATE 40 CORRIDOR EAST OF STATESVILLE FROM THESE 
THUNDERSTORMS OVER THE PAST TWO HOURS.

ALTHOUGH THE HEAVIER RAIN WAS ENDING...RUNOFF FROM THIS EXCESSIVE 
RAINFALL MAY STILL CAUSE FLASH FLOODING TO DEVELOP ALONG FOURTH 
CREEK AND BEAVER CREEK EAST OF STATESVILLE. IF NO ADDITIONAL 
THUNDERSTORMS REDEVELOP FROM THE WEST...THE FLASH FLOOD WARNING MAY 
BE CANCELLED BY 9 PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS 
SAFELY. TURN AROUND AND FIND ANOTHER ROUTE.

&&

LAT...LON 3586 8070 3576 8074 3574 8078 3576 8083
      3583 8086 3585 8083 3589 8074

$$

HG

904 
WGUS72 KGSP 220011
FFSGSP

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
811 PM EDT SAT JUL 21 2012

NCC097-220026-
/O.CAN.KGSP.FF.W.0011.000000T0000Z-120722T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
IREDELL NC-
811 PM EDT SAT JUL 21 2012

...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR EAST CENTRAL
IREDELL COUNTY IS CANCELLED...

EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS
AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO
RECEDE...ENDING THE FLOOD THREAT. IF FLOODING HAS BEEN OBSERVED...
PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

LAT...LON 3586 8070 3576 8074 3574 8078 3576 8083
      3583 8086 3585 8083 3589 8074

$$

HG

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 21, 4:53 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jul 21, 4:53 PM EDT, 2 hours 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
453 PM EDT SAT JUL 21 2012

.SYNOPSIS...
A STATIONARY FRONT WILL REMAIN WEST TO EAST OVER THE REGION BEFORE
DISSIPATING EARLY IN THE WEEK. AS A WEAK RIDGE TRIES TO BUILD INTO
THE REGION FROM THE SOUTHEAST...A LEE TROF WILL DEVELOP AND REMAIN
ACROSS THE PIEDMONT THROUGH MUCH OF THE UPCOMING WEEK.

&&

.NEAR TERM /THROUGH SUNDAY/...
SO FAR THIS AFTERNOON...COVERAGE OF CONVECTION HAS BEEN LIMITED TO
WIDELY SCATTERED...EXCEPT FOR A SMALL AREA ACROSS THE SMOKIES AND
THE BALSAMS. WATER VAPOR SUGGESTS...AND THE LATEST SHORT RANGE MODEL
GUIDANCE CONFIRMS THAT A MID-LEVEL VORT MAX IS PUSHING INTO THE
CENTRAL CAROLINAS ATTM. THIS WOULD CERTAINLY EXPLAIN THE PALTRY
COVERAGE IN OUR AREA...AND THE NUMEROUS-WIDESPREAD COVERAGE TO OUR
EAST. NEVERTHELESS...COVERAGE IN OUR CWA IS GRADUALLY INCREASING.
WITH CAPE VALUES OF 2000-3000+ OVER THE AREA...I AM VERY HESITANT TO
BACK OFF POPS TOO MUCH FROM THE CURRENT 50-60 PERCENT FORECAST...
ESPECIALLY SINCE THERE MAY BE JUST ENOUGH LOW LEVEL SHEAR (AROUND 15
KT IN THE 0-3 KM LAYER) TO ALLOW FOR SOME CLUSTERING OF CELLS ALONG
OUTFLOW BOUNDARIES. THE BEST CHANCE FOR SEVERE WEATHER MAY BE ACROSS
OUR WESTERN ZONES...WHERE DRIER MID/UPPER LEVEL AIR IS BEGINNING TO
MAKE A PUSH. HOWEVER...AN ISOLATED SEVERE WEATHER EVENT WILL BE
POSSIBLE ANYWHERE...ESPECIALLY IF CELLS ARE ABLE TO ORGANIZE.

THE CONVECTION SHUD DIMINISH THRU THE EVENING AND END OVERNIGHT.
HOWEVER...A LINGERING SHOWER IS POSSIBLE AT ALMOST ANY TIME. SHUD BE
ANOTHER NIGHT OF DEVELOPING LOW CLOUDS AND PATCHY DENSE FOG. LOWS
SHUD BE NEAR TO SLIGHTLY ABOVE NORMAL.

RIDGE AXIS BUILDS OVER THE AREA SUNDAY DIMINISHING THE EFFECT OF THE
LINGERING SHORT WAVE ENERGY. UPPER JET WILL MOVE EAST OF THE AREA AS
WELL ENDING SIGNIFICANT DIVERGENCE. THE WEAK LOW LEVEL BOUNDARY WILL
CONTINUE TO WASH OUT...BUT THE REMNANTS OF THE BOUNDARY OR A
DEVELOPING LEE TROF WILL REMAIN IN PLACE. LOW LEVEL MOISTURE WILL
REMAIN QUITE HIGH...BUT DEEP MOISTURE WILL DIMINISH. THE ATMOS WILL
REMAIN UNSTABLE...SO CONVECTION SHUD REDEVELOP. HOWEVER...COVERAGE
SHUD BE LESS THAN PREVIOUS DAYS. HAVE SCT CONVECTION GENERALLY ALONG
AND NORTH OF I-85 AND ISOLATED TO THE SOUTH. HIGHS WILL REBOUND BACK
TO NEAR TO SLIGHTLY ABOVE NORMAL.

&&

.SHORT TERM /SUNDAY NIGHT THROUGH TUESDAY/...
AS OF 230 PM SATURDAY...THE FRONTAL BOUNDARY IS EXPECTED TO REMAIN
NORTH OF THE APPALACHIANS AS UPPER RIDGE OF HIGH STRAIGHTENS OVER
THE REGION MON/TUE. THE COMBINATION OF MODERATE DIURNAL
INSTABILITY...WITH CAPE VALUES IN THE 1500 TO 2000 J/KG
RANGE...LITTLE CAPPING INVERSION AND RELATIVELY HIGH PW VALUES WILL
SUPPORT AFTERNOON SCATTERED THUNDERSTORMS EACH DAY. WITH WEAK MEAN
FLOW ALOFT IN A MOIST ENVIRONMENT....STORMS WILL MOVE SLOWLY AND
PRODUCE HEAVY RAINFALL WHICH COULD RESULT IN LOCALIZED FLOODING.
HENCE...WILL FORECAST DIURNAL POPS IN THE 30S ACROSS MUCH OF OUR CWA
EACH DAY. TEMPERATURES WILL REMAIN A COUPLE DEGREES ABOVE SEASONAL
AVERAGES WITH HIGHS IN THE LOW TO MID 90S ACROSS THE PIEDMONT.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
AS OF 200 PM SATURDAY...THE LATEST MEDIUM RANGE MODELS CONTINUE TO
INDICATE THAT A FRONTAL BOUNDARY OVER THE OHIO VALLEY DROPS SOUTH
ACROSS THE REGION AS AN UPPER TROUGH DEEPENS ACROSS THE MID ATLANTIC
REGION WEDNESDAY. THEN THE LATEST GFS KEEPS THE FRONT STALLED OUT
OVER THE REGION THROUGH MUCH OF THE EXTENDED FORECAST PERIOD WHILE
THE ECMWF PUSHES THE FRONT BACK TO THE NORTH ON THURSDAY AS A WEAK
UPPER RIDGE BUILDS ACROSS THE SOUTHEAST. BY NEXT WEEKEND...BOTH GFS
AND ECMWF SUGGEST THAT ANOTHER UPPER TROUGH DEVELOPS ACROSS THE
GREAT LAKES INTO THE MID ATLANTIC REGION...RESULTING IN SECONDARY
FRONT SLIDING SOUTH INTO THE REGION. WITH HIGH PW VALUES AND GOOD
DIURNAL INSTABILITY...WILL SEE SCATTERED AFTERNOON CONVECTION EACH
DAY. TEMPERATURES WILL REMAIN NEAR SEASONAL AVERAGES WITH HIGHS IN
THE LOW 90S ACROSS THE PIEDMONT THROUGH THE PERIOD.

&&

.AVIATION /21Z SATURDAY THROUGH THURSDAY/...
AT KCLT...MVFR SHUD BE LOW VFR BY 19Z. TSRA SHUD HOLD OFF UNTIL THEN
AS WELL. THAT SAID...ANOTHER AFTERNOON/EARLY EVENING OF NUMEROUS
TSRA EXPECTED. HAVE GONE PREVAILING VFR TSRA UNTIL 01Z THEN TEMPS
MVFR TSRA UNTIL 04Z. WILL AMD AS CELLS APPROACH THE AIRFIELD. IFR
CIGS AND MVFR VSBY EXPECTED AGAIN BY DAYBREAK. SHUD BE QUICKER TO
LIFT TO VFR SUN MORN AS FLOW WILL HAVE LESS OF AN UPSLOPE COMPONENT
WITH ONLY A MINOR LOW LEVEL INVERSION. WINDS WILL GENERALLY BE SW
THRU THE PERIOD WITH A NORMAL DIURNAL SPEED TREND.

ELSEWHERE...VFR EXPECTED THRU THE EVENING XCPT WHEN ONE OF THE
NUMEROUS TSRA MOVE ACROSS AN AIRFIELD. WILL AMD AS NEEDED FOR
CONVECTION. SWLY WIND WITH SOME LOW END GUSTS THRU THE AFTERNOON
BECOMING LIGHT SW FOR THE EVENING. CONVECTION WILL LINGER BUT
DIMINISH THRU THE EVENING AND END AROUND MIDNIGHT. IFR TO MVFR CIGS
AND VSBY EXPECTED BY DAYBREAK. SHUD BE QUICKER TO LIFT SUN MORNING
AS FLOW WILL HAVE LESS OF AN UPSLOPE COMPONENT WITH ONLY A MINOR LOW
LEVEL INVERSION. LIGHT WINDS OVERNIGHT BECOME WSW DURING THE MORNING.

OUTLOOK...AS A COLD FRONT STALLS OVER THE AREA...SCATTERED
CONVECTION EXPECTED SUNDAY AFTERNOON. LATE NIGHT/MORNING FOG AND LOW
STRATUS PROBABILITIES WILL ALSO REMAIN FAIRLY HIGH...ESPECIALLY IN
THE MTN VALLEYS. THUNDERSTORMS WILL BECOME LESS NUMEROUS AS THE
BERMUDA HIGH BUILDS INTO THE REGION DURING THE FIRST PART OF THE
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...JDL/RWH
SHORT TERM...JOH
LONG TERM...JOH
AVIATION...RWH

Hazardous weather outlook, Jul 21, 12:38 PM EDT, 6 hours 33 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1238 PM EDT SAT JUL 21 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-221645-
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-
1238 PM EDT SAT JUL 21 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NUMEROUS THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE SLOWLY
ACROSS THE AREA THIS AFTERNOON AND EVENING. THE STRONGEST STORMS
HAVE THE POTENTIAL TO PRODUCE SMALL AREAS OF DAMAGING DOWNBURST
WINDS. LARGE HAIL IS POSSIBLE BUT LESS LIKELY. STRONG GUSTY WINDS
AND CLOUD TO GROUND LIGHTNING ARE POSSIBLE WITH ANY STORM. LOCALLY
HEAVY RAINFALL IS LIKELY...AND COULD LEAD TO FLOODING...ESPECIALLY
LOCATIONS WHERE STORMS REPEATEDLY MOVE OVER.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

In the hours before

Special weather statement, Jul 21, 5:58 PM EDT, 1 hour 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
558 PM EDT SAT JUL 21 2012

NCZ504-506-212230-
EASTERN MCDOWELL-GREATER BURKE-
558 PM EDT SAT JUL 21 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN MCDOWELL AND SOUTHERN
BURKE COUNTIES THROUGH 630 PM EDT...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES EAST OF NEBO...OR 9 MILES EAST OF
MARION...MOVING EAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  MORGANTON...

PEA SIZE HAIL...FREQUENT LIGHTNING...WIND GUSTS UP TO 40 MPH...AND
TORRENTIAL RAIN ARE EXPECTED WITH THIS STORM.

LAT...LON 3582 8162 3583 8160 3578 8156 3562 8152
      3559 8193 3576 8196 3577 8193 3583 8163

HG

Special weather statement, Jul 21, 6:08 PM EDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
608 PM EDT SAT JUL 21 2012

NCZ035-036-056-212245-
ALEXANDER-CATAWBA-IREDELL-
608 PM EDT SAT JUL 21 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CATAWBA...SOUTHEASTERN
ALEXANDER AND WESTERN IREDELL COUNTIES THROUGH 645 PM EDT...

AT 608 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES WEST OF LOOKOUT SHOALS LAKE...OR 9 MILES
NORTH OF NEWTON...MOVING EAST AT 20 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  LOOKOUT SHOALS LAKE...
  STONY POINT...
  STATESVILLE...

PEA SIZE HAIL...FREQUENT LIGHTNING...WIND GUSTS UP TO 40 MPH...AND
TORRENTIAL RAIN ARE EXPECTED WITH THIS STORM.

LAT...LON 3598 8091 3577 8081 3567 8120 3584 8128

HG

Special weather statement, Jul 21, 6:19 PM EDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
619 PM EDT SAT JUL 21 2012

NCZ056-502-504-212245-
CATAWBA-GREATER BURKE-GREATER CALDWELL-
619 PM EDT SAT JUL 21 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN BURKE...NORTHWESTERN
CATAWBA AND SOUTHEASTERN CALDWELL COUNTIES THROUGH 645 PM EDT...

AT 618 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LONGVIEW...OR 4 MILES WEST OF HICKORY...
MOVING EAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HICKORY...
  ST. STEPHENS...

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

LAT...LON 3582 8134 3580 8133 3581 8127 3564 8123
      3562 8144 3579 8152 3585 8134

HG

Special weather statement, Jul 21, 6:29 PM EDT, 42 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
629 PM EDT SAT JUL 21 2012

NCZ036-037-057-212300-
DAVIE-IREDELL-ROWAN-
629 PM EDT SAT JUL 21 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN IREDELL...NORTHWESTERN
ROWAN AND SOUTHWESTERN DAVIE COUNTIES THROUGH 700 PM EDT...

AT 629 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES NORTHWEST OF CLEVELAND...OR 7 MILES EAST
OF STATESVILLE...MOVING NORTHEAST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  CLEVELAND...

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

LAT...LON 3598 8060 3577 8049 3569 8081 3585 8090

HG

Special weather statement, Jul 21, 6:50 PM EDT, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
650 PM EDT SAT JUL 21 2012

NCZ035-056-502-504-212315-
ALEXANDER-CATAWBA-GREATER BURKE-GREATER CALDWELL-
650 PM EDT SAT JUL 21 2012

...A STRONG THUNDERSTORM WILL AFFECT EASTERN BURKE...NORTHERN
CATAWBA...SOUTHEASTERN CALDWELL AND WESTERN ALEXANDER COUNTIES
THROUGH 715 PM EDT...

AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SAWMILLS...OR 8 MILES SOUTH OF LENOIR...
MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  GRANITE FALLS...
  LAKE HICKORY...

PEA SIZE HAIL...TORRENTIAL RAINFALL...WIND GUSTS UP TO 40 MPH AND
FREQUENT LIGHTNIG ARE EXPECTED WITH THIS STORM.

LAT...LON 3600 8127 3579 8116 3568 8153 3585 8162

HG

Local storm report, Jul 21, 7:10 PM EDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
710 PM EDT SAT JUL 21 2012

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

0700 PM     FLASH FLOOD      LONGVIEW                35.73N 81.38W
07/21/2012                   CATAWBA            NC   COUNTY OFFICIAL

            FIRE DEPT REPORTS FLOODING OF AN APARTMENT COMPLEX ON
            18TH ST IN LONGVIEW.

&&

LANE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 20, 11:42 PM EDT	Special Weather Statement	GSP	Avery, Madison, Mitchell, Yancey	93 min
Jul 21, 2:46 PM EDT	Special Weather Statement	GSP	McDowell	29 min
Jul 21, 3:12 PM EDT	Special Weather Statement	GSP	Swain	33 min
Jul 21, 3:38 PM EDT	Special Weather Statement	GSP	Davie	37 min
Jul 21, 4:12 PM EDT	Special Weather Statement	GSP	Haywood	33 min
Jul 21, 4:43 PM EDT	Special Weather Statement	GSP	Buncombe	32 min
Jul 21, 5:09 PM EDT	Special Weather Statement	GSP	Rutherford	36 min
Jul 21, 5:41 PM EDT	Special Weather Statement	GSP	Catawba	34 min
Jul 21, 5:43 PM EDT	Special Weather Statement	GSP	Union	47 min
Jul 21, 5:50 PM EDT	Severe Thunderstorm Warning	GSP	Union	21 min
Jul 21, 5:58 PM EDT	Special Weather Statement	GSP	Burke	32 min
Jul 21, 6:08 PM EDT	Special Weather Statement	GSP	Iredell	37 min
Jul 21, 6:14 PM EDT	Severe Thunderstorm Warning	GSP	Alexander, Catawba, Iredell	61 min
Jul 21, 6:19 PM EDT	Special Weather Statement	GSP	Catawba	26 min
Jul 21, 6:26 PM EDT	Areal Flood Advisory	GSP	Alexander, Burke, Caldwell, Catawba, Iredell	2 hr
Jul 21, 6:29 PM EDT	Special Weather Statement	GSP	Iredell	31 min
Jul 21, 6:36 PM EDT	Flash Flood Warning	GSP	Alexander, Burke, Caldwell, Catawba	105 min
Jul 21, 6:50 PM EDT	Special Weather Statement	GSP	Caldwell	25 min
Jul 21, 6:57 PM EDT	Areal Flood Advisory	GSP	Iredell	73 min
Jul 21, 7:16 PM EDT	Special Weather Statement	GSP	Davie	29 min
Jul 21, 7:19 PM EDT	Special Weather Statement	GSP	Davie	26 min

Nearby

Flash Flood Warnings in North Carolina, 2012 Every flash flood 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.