Alert archive / North Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 169, NWS Greenville-Spartanburg, SC

May 15, 2012Cabarrus County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 15, 2012, 7:51 PM EDT for Cabarrus County, North Carolina. It was in force for 54 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
May 15, 2012, 7:51 PM EDT (23:51 UTC)
Expired
May 15, 2012, 8:45 PM EDT
In force
54 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

County Cabarrus County, NC

The radar

The Greer radar (KGSP), 159 km from the middle of the area, began a volume at 23:51 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 15, 3:13 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.9 hours before the alert went out and 103 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 2012-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 24 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 2012-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 60 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
24 J/kg
Mixed-layer CIN
-114 J/kg
Mixed-layer LCL
532 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
60 m²/s²
0-3 km storm-relative helicity
55 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.

327 
WUUS52 KGSP 152351
SVRGSP
NCC025-160045-
/O.NEW.KGSP.SV.W.0169.120515T2351Z-120516T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
751 PM EDT TUE MAY 15 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CABARRUS COUNTY IN THE PIEDMONT OF NORTH CAROLINA...

* UNTIL 845 PM EDT

* AT 747 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 NEAR UNC CHARLOTTE...AND MOVING NORTHEAST AT 10
  MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  CONCORD.

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.

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

&&

LAT...LON 3530 8044 3526 8065 3528 8067 3532 8069
      3534 8069 3550 8054 3534 8039
TIME...MOT...LOC 2351Z 242DEG 7KT 3530 8066

$$
LANE
2 follow-up statements
184 
WWUS52 KGSP 160017
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
817 PM EDT TUE MAY 15 2012

NCC025-160045-
/O.CON.KGSP.SV.W.0169.000000T0000Z-120516T0045Z/
CABARRUS NC-
817 PM EDT TUE MAY 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
CABARRUS COUNTY UNTIL 845 PM EDT...

AT 811 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 6 MILES 
NORTH OF MIDLAND...MOVING EAST AT 15 MPH. ANOTHER POSSIBLY SEVERE 
STORM WAS DEVELOPING JUST SOUTH OF MOUNT PLEASANT. 

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF CENTRAL 
AND EASTERN CABARRUS COUNTY.

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.

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

&&

LAT...LON 3528 8057 3533 8061 3544 8049 3534 8039
      3530 8044
TIME...MOT...LOC 0016Z 260DEG 13KT 3531 8051

$$
LANE
291 
WWUS52 KGSP 160040
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
840 PM EDT TUE MAY 15 2012

NCC025-160050-
/O.EXP.KGSP.SV.W.0169.000000T0000Z-120516T0045Z/
CABARRUS NC-
840 PM EDT TUE MAY 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CABARRUS COUNTY WILL
EXPIRE AT 845 PM EDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE 
LEVELS.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM 
SOUTH OF MOUNT PLEASANT NEAR THE STANLY COUNTY LINE.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 10 PM. 

LAT...LON 3528 8057 3533 8061 3544 8049 3534 8039
      3530 8044
TIME...MOT...LOC 0040Z 260DEG 13KT 3532 8040

$$
LANE

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 15, 5:15 PM EDT, 2 hours 36 minutes earlier.

Area forecast discussion, May 15, 5:15 PM EDT, 2 hours 36 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
515 PM EDT TUE MAY 15 2012

.SYNOPSIS...
A BROAD AND SLOW MOVING UPPER LEVEL TROF WILL CONTINUE TO MOVE EAST
ACROSS THE AREA THROUGH THURSDAY. HIGH PRESSURE WILL THEN BUILD IN
FROM THE NORTH ON FRIDAY AND REMAIN THROUGH EARLY NEXT WEEK.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
AS OF 5 PM...CONVECTION HAS FIRED MAINLY ALONG THE HIGHER TERRAIN
THIS AFTERNOON...WITH A SECONDARY MAXIMUM IN THE GREATER INSTABILITY
ACROSS THE SE PIEDMONT AND MIDLANDS. A MARGINAL MICROBURST AND LARGE
HAIL THREAT PERSISTS IN THE WATCH AREA GIVEN THE MID LEVEL DRY AIR
EVIDENT IN SOUNDINGS ACROSS THE REGION. 55 DBZ CORES REACHING 23 KFT
SHOULD BE INDICATIVE OF APPROXIMATELY QUARTER SIZED HAIL. ALTHOUGH
RAINFALL RATES HAVE BEEN RELATIVELY TAME THUS FAR...THE NC FOOTHILLS
AND PIEDMONT COULD ONCE AGAIN BE AT RISK OF FLASH FLOODING IF THE
CONVECTION HOLDS ITS INTEGRITY MOVING EAST OFF THE BLUE RIDGE
THROUGH MID EVENING.

OVERNIGHT...AN AXIS OF WEAK BOUNDARY LAYER WIND CONVERGENCE COULD
ONCE AGAIN PERSIST ACROSS THE UPSTATE AND THE NC PIEDMONT...BUT TSTM
CONVERAGE SHOULD STEADILY DIMINISH GIVEN THE LESSENING INSTABILTY.
THE WEAK TROUGH AXIS WILL SLIDE A LITTLE TO THE EAST ON WEDNESDAY
AND THE H5 WINDS WILL BE QUITE LIGHT. OVERALL...THIS SHOULD RESULT
IN MUCH LESS CONVECTIVE COVERAGE OVER THE MTNS. THE UPSTATE AND NE
GA WILL SEE THE BEST COVERAGE. I HAVE 40 POPS IN THIS AREA FOR
NOW...BUT IT WOULDN/T SURPRISE ME TO SEE GREATER COVERAGE THAN THIS
ACROSS THE SE ZONES.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
AS OF 215 PM TUESDAY...ON THURSDAY...THE CWA WILL REMAIN IN THE
VICINITY OF THE MID LEVEL TROUGH DURING THE DAYLIGHT HOURS. AT THE
SFC...A NEARLY WEST TO EAST ORIENTED FRONT WILL SLIP SOUTHWARD
ACROSS THE THE SOUTHERN APPALACHIANS DURING THE AFTERNOON. FORECAST
SOUNDINGS INDICATE A WEAK H6 INVERSION...WITH SHALLOW DEEP LAYER
LAPSE RATES. CAPE VALUES MAY REMAIN LIMITED TO LESS THAN 1000 J/KG
DURING THE AFTERNOON. HOWEVER...THE COMBINATION OF THE CYCLONIC FLOW
ALOFT...WEAK INSTABILITY...AND A SFC BOUNDARY SHOULD SUPPORT CHC
POPS ACROSS THE MTNS RIDGES AND SCHC EAST. HIGH TEMPERATURES ARE
EXPECTED TO RANGE FROM THE U70S WITHIN THE MTN VALLEYS TO L80S EAST.

ON FRIDAY...THE H5 TROF AXIS SHOULD TRACK SE AND HEIGHTS SHOULD RISE
ACROSS THE MTNS DURING THE AFTERNOON. AT THE SFC...HIGH PRESSURE
SHOULD SE ACROSS THE WESTERN CAROLINAS AND NE GEORGIA THROUGH THE
DAY...RESULTING IN NE LLVL FLOW. FORECAST SOUNDINGS INDICATE WARM
MID LEVEL TEMPS...KEEPING CAPE VALUES LESS THAN THURSDAY. GIVEN THE
PATTERN...I WILL KEEP POPS LIMITED TO A SCHC ACROSS THE HIGHEST
ELEVATIONS...OTHERWISE...CONDITIONS WILL LIKELY REMAIN DRY.
TEMPERATURES SHOULD RANGE VERY CLOSE TO NORMAL.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AS OF 1230 PM TUESDAY...BASED ON HPC DISCUSSION...I WILL FAVOR THE
0Z ECMWF THROUGH THE EXTENDED PERIOD. BROAD H5 RIDGING IS FORECAST
TO REMAIN ACROSS THE REGION THROUGH THE WEEKEND...THEN A CLOSED LOW
MAY CUT OFF OVER FL ON MON AND LIFT NORTH INTO THE MIDDLE OF NEXT
WEEK. AT THE SFC...WEAK HIGH PRESSURE SHOULD REMAIN RIDGED NE TO SE
ACROSS THE CWA THROUGH MOST OF THE EXTENDED PERIOD. BASED ON THIS
PATTERN...I WILL FAVOR A DRY FORECAST ACROSS THE REGION THIS
WEEKEND. I WILL FORECAST INCREASING SCHC TO CHC POPS MON AND TUES
ACROSS THE CWA. TEMPERATURES SHOULD RANGE WITHIN A FEW DEGREES OF
NORMAL THROUGH THE PERIOD.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
AT KCLT...HAVE RETAINED A TEMPO FOR TSRA FROM 21Z TO 00Z GIVEN THE
UPSTREAM CONVECTION OVER THE SC MIDLANDS AND PIEDMONT. SFC WINDS
HAVE BEEN FAIRLY LIGHT AT THE TERMINAL...OCCASIONALLY WSW...BUT
WINDS SHOULD TURN BACK TO SW ON AVERAGE THROUGH THE EVENING HOURS
ASIDE FROM ANY CONVECTIVE OUTFLOWS. SCT SHOWERS OR THUNDERSTORMS
COULD BE POSSIBLE AFTER 00Z...BUT WITH CONFIDENCE TOO LOW TO
MENTION. LOW CIGS MAY DEVELOP LATE TONIGHT...THOUGH THIS WILL DEPEND
ON HOW MUCH RAIN FALLS THIS EVENING. FOR NOW...WENT WITH BKN020.
WINDS WILL BE SW THROUGH TONIGHT...TURNING LIGHT OUT OF THE NE WED
AFTER SUNRISE.

ELSEWHERE...TSTMS CHANCES REMAIN HIGH FROM KAVL TO KHKY...WITH MORE
SCT ACTIVITY AT THE UPSTATE TAF SITES THROUGH THE EVENING. LOW CIGS
AND SOME FOG WILL BE POSSIBLE AGAIN TONIGHT...BUT THIS WILL DEPEND
ON HOW MUCH RAIN FALLS THIS AFTN. HAVE GENERALLY SHIED AWAY FROM
CARRYING ANYTHING RESTRICTIVE OVERNIGHT FOR NOW.

OUTLOOK...EXPECT ISOLD LATE DAY SHOWERS AND TSTMS THRU LATE WEEK.
MRNG FOG PSBL...ESPLY MTN VALLEYS AND NEAR LAKES/RIVERS.

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...FLASH FLOOD WATCH UNTIL 4 AM EDT WEDNESDAY FOR NCZ033-035>037-
     048>050-053-056-057-064-065-068>072-082-501>510.
SC...FLASH FLOOD WATCH UNTIL 4 AM EDT WEDNESDAY FOR SCZ002-003-
     005>009.

&&

SYNOPSIS...JPT
NEAR TERM...HG/MCAVOY
SHORT TERM...NED
LONG TERM...NED
AVIATION...HG/MCAVOY
Hazardous weather outlook, May 15, 3:25 PM EDT, 4 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
325 PM EDT TUE MAY 15 2012

NCZ033-048>050-161930-
AVERY-MADISON-YANCEY-MITCHELL-
325 PM EDT TUE MAY 15 2012

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

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

   FLASH FLOOD WATCH.

SCATTERED TO NUMEROUS THUNDERSTORMS WILL PERSIST INTO THE
EVENING. SEVERAL OF THESE STORMS WILL PRODUCE LARGE HAIL AND
POSSIBLY DAMAGING WIND GUSTS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
WEDNESDAY AS THE ATMOSPHERE REMAINS UNSTABLE AHEAD OF A WEAK COLD
FRONT. A FEW OF THESE STORMS COULD BECOME STRONG ENOUGH TO PRODUCE
LARGE HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

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

NCZ035>037-053-056-057-064-065-068>072-082-501>510-SCZ002-003-
005>009-161930-
ALEXANDER-IREDELL-DAVIE-BUNCOMBE-CATAWBA-ROWAN-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-PICKENS MOUNTAINS-
GREENVILLE MOUNTAINS-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-
CHEROKEE-YORK-
325 PM EDT TUE MAY 15 2012

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...
...SEVERE THUNDERSTORM WATCH 279 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

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

   FLASH FLOOD WATCH.
   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
WEDNESDAY MAINLY SOUTH AND EAST OF INTERSTATE 85...AS THE
ATMOSPHERE REMAINS UNSTABLE AHEAD OF A WEAK COLD FRONT. A FEW OF
THESE STORMS COULD BECOME STRONG ENOUGH TO PRODUCE LARGE HAIL AND
DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

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

NCZ051-052-058-059-062-063-161930-
SWAIN-HAYWOOD-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-
325 PM EDT TUE MAY 15 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NORTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED TO NUMEROUS THUNDERSTORMS WILL PERSIST INTO THE
EVENING. SEVERAL OF THESE STORMS WILL PRODUCE LARGE HAIL AND
POSSIBLY DAMAGING WIND GUSTS. IN ADDITION...HEAVY DOWNPOURS COULD
RESULT IN FLOODING OF POOR DRAINAGE AREAS OR SMALL STREAMS AND
CREEKS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
WEDNESDAY AS THE ATMOSPHERE REMAINS UNSTABLE AHEAD OF A WEAK COLD
FRONT. A FEW OF THESE STORMS COULD BECOME STRONG ENOUGH TO PRODUCE
LARGE HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

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

GAZ010-017-018-026-028-029-SCZ001-004-010>014-019-161930-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-OCONEE MOUNTAINS-
GREATER OCONEE-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
325 PM EDT TUE MAY 15 2012

...SEVERE THUNDERSTORM WATCH 279 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

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

   SEVERE THUNDERSTORM WATCH.

HEAVY DOWNPOURS COULD RESULT IN FLOODING OF POOR DRAINAGE AREAS
OR SMALL STREAMS AND CREEKS THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP
WEDNESDAY AS THE ATMOSPHERE REMAINS UNSTABLE AHEAD OF A WEAK COLD
FRONT. A FEW OF THESE STORMS COULD BECOME STRONG ENOUGH TO PRODUCE
LARGE HAIL AND DAMAGING WINDS.

.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, May 15, 4:54 PM EDT, 2 hours 57 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
454 PM EDT TUE MAY 15 2012

NCZ051-152145-
SWAIN-
454 PM EDT TUE MAY 15 2012

...THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL AFFECT SOUTHERN SWAIN
COUNTY THROUGH 545 PM EDT...

AT 449 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM PRODUCING VERY HEAVY RAINFALL NEAR WESSER...OR 9 MILES
SOUTHWEST OF BRYSON CITY. THIS STORM WAS NEARLY STATIONARY.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  ALMOND...
  ALARKA...

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.

LAT...LON 3537 8361 3538 8359 3542 8358 3542 8344
      3532 8343 3530 8345 3529 8361

LANE
Special weather statement, May 15, 5:16 PM EDT, 2 hours 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
516 PM EDT TUE MAY 15 2012

NCZ051-152145-
SWAIN-
516 PM EDT TUE MAY 15 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SWAIN COUNTY
THROUGH 545 PM EDT...

AT 509 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR SMOKEMONT...OR 10 MILES NORTHEAST OF BRYSON
CITY...MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL MAINLY AFFECT LOCATIONS IN EASTERN PORTIONS OF THE
GREAT SMOKY MOUNTAINS.

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

LAT...LON 3566 8321 3560 8318 3558 8318 3558 8317
      3556 8316 3551 8318 3552 8324 3549 8329
      3548 8338 3556 8342

LANE
Special weather statement, May 15, 6:34 PM EDT, 1 hour 17 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
634 PM EDT TUE MAY 15 2012

SCZ013-014-152315-
CHESTER-UNION-
634 PM EDT TUE MAY 15 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN UNION AND WESTERN
CHESTER COUNTIES THROUGH 715 PM EDT...

AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHEAST OF WHITMIRE...OR 13 MILES NORTH
OF NEWBERRY...MOVING NORTHEAST AT 25 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  CARLISLE...

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

LAT...LON 3451 8160 3452 8164 3455 8166 3475 8156
      3467 8127 3456 8137 3456 8142 3452 8142
      3448 8145 3448 8149 3444 8154

LANE
Special weather statement, May 15, 6:55 PM EDT, 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
655 PM EDT TUE MAY 15 2012

NCZ064-SCZ002-003-152345-
GREENVILLE MOUNTAINS-PICKENS MOUNTAINS-TRANSYLVANIA-
655 PM EDT TUE MAY 15 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN PICKENS...NORTHWESTERN
GREENVILLE AND SOUTHEASTERN TRANSYLVANIA COUNTIES THROUGH 745 PM
EDT...

AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR ROCKY BOTTOM...OR 13 MILES NORTHWEST OF
PICKENS...MOVING EAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  ROCKY BOTTOM...
  TABLE ROCK...
  CAESARS HEAD...

TORRENTIAL RAINFALL...SMALL HAIL...AND 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.

LAT...LON 3511 8291 3518 8260 3496 8257 3496 8259
      3500 8291 3504 8291 3505 8290 3506 8291

LANE
Special weather statement, May 15, 7:44 PM EDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
744 PM EDT TUE MAY 15 2012

SCZ001>003-160045-
GREENVILLE MOUNTAINS-OCONEE MOUNTAINS-PICKENS MOUNTAINS-
744 PM EDT TUE MAY 15 2012

...THUNDERSTORMS PRODUCING HEAVY RAINFALL WILL CONTINUE TO AFFECT
PORTIONS OF NORTHERN OCONEE...NORTHWESTERN GREENVILLE AND
NORTHWESTERN PICKENS COUNTIES THROUGH 845 PM EDT...

AT 739 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SEVERAL THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL ALONG THE BLUE
RIDGE IN SOUTH CAROLINA. RAINFALL RATES OF ONE TO TWO INCHES PER
HOUR WILL BE POSSIBLE IN THE FOLLOWING LOCATIONS...

ROCKY BOTTOM...
TABLE ROCK...
CAESARS HEAD...
LAKE JOCASSEE AND SURROUNDING AREAS...

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.

LAT...LON 3493 8316 3494 8312 3500 8311 3508 8280
      3507 8276 3510 8272 3510 8270 3512 8268
      3512 8263 3516 8255 3516 8251 3518 8246
      3510 8245 3487 8317

LANE
Special weather statement, May 15, 7:47 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
747 PM EDT TUE MAY 15 2012

NCZ072-160015-
CABARRUS-
747 PM EDT TUE MAY 15 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL CABARRUS COUNTY THROUGH
815 PM EDT...

AT 743 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR HARRISBURG...OR 3 MILES EAST OF UNC
CHARLOTTE...MOVING NORTHEAST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  HARRISBURG...

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

LAT...LON 3527 8053 3526 8065 3527 8067 3532 8069
      3535 8069 3541 8062

LANE

The office that day

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

IssuedProductOfficeCountiesLasted
May 14, 8:08 PM EDTSpecial Weather StatementGSPCleveland, Gaston37 min
May 14, 8:13 PM EDTSpecial Weather StatementGSPIredell47 min
May 14, 8:23 PM EDTSevere Thunderstorm WarningGSPUnion52 min
May 14, 8:38 PM EDTAreal Flood AdvisoryGSPIredell, Rowan112 min
May 14, 9:44 PM EDTAreal Flood WarningGSPAlexander, Caldwell, Iredell4 hr
May 15, 10:54 AM EDTFlash Flood WatchGSPAlexander, Avery, Buncombe, Burke, Cabarrus, Caldwell and 17 more17 hr
May 15, 3:51 PM EDTSpecial Weather StatementGSPHenderson24 min
May 15, 4:11 PM EDTSpecial Weather StatementGSPMcDowell34 min
May 15, 4:25 PM EDTSevere Thunderstorm WarningGSPHenderson, Rutherford36 min
May 15, 4:46 PM EDTSpecial Weather StatementGSPAvery44 min
May 15, 4:54 PM EDTSpecial Weather StatementGSPMacon51 min
May 15, 5:10 PM EDTAreal Flood AdvisoryGSPMitchell, Yancey80 min
May 15, 5:16 PM EDTSpecial Weather StatementGSPSwain29 min
May 15, 6:55 PM EDTSpecial Weather StatementGSPTransylvania50 min
May 15, 7:47 PM EDTSpecial Weather StatementGSPCabarrus28 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.