Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 422, NWS Greenville-Spartanburg, SC

July 17, 2012Laurens County, Spartanburg County, Union County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 17, 2012, 5:15 PM EDT for Laurens County, Spartanburg County, Union County, South Carolina. It was in force for 20 min. 1 report 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: Jul 17, 2012, 5:15 PM EDT (21:15 UTC)
Expired: Jul 17, 2012, 5:35 PM EDT
In force: 20 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Laurens County, SC, Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 30 km from the middle of the area, began a volume at 21:17 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
Jul 17, 5:40 PM EDT	TSTM WND DMG	5 Sw Cross Keys, SC	A FEW LARGE TREE LIMBS DOWN AT MUSGROVE MILL STATE HISTORIC SITE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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, 9.3 hours before the alert went out and 249 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: 666 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1282 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 26 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.

831 
WUUS52 KGSP 172115
SVRGSP
SCC059-083-087-172215-
/O.NEW.KGSP.SV.W.0422.120717T2115Z-120717T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
515 PM EDT TUE JUL 17 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN LAURENS COUNTY IN UPSTATE SOUTH CAROLINA...
  SOUTHEASTERN SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA...
  WEST CENTRAL UNION COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 615 PM EDT

* AT 513 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
  CROSS KEYS...OR 13 MILES WEST OF UNION...AND MOVING WEST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  ENOREE.
  GRAY COURT.

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 3471 8219 3473 8217 3478 8178 3461 8171
      3443 8211
TIME...MOT...LOC 2115Z 072DEG 11KT 3467 8185

$$

RB

1 follow-up statement

225 
WWUS52 KGSP 172135
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
535 PM EDT TUE JUL 17 2012

SCC059-083-087-172146-
/O.CAN.KGSP.SV.W.0422.000000T0000Z-120717T2215Z/
LAURENS SC-SPARTANBURG SC-UNION SC-
535 PM EDT TUE JUL 17 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL UNION...
SOUTHEASTERN SPARTANBURG AND NORTHERN LAURENS COUNTIES IN UPSTATE
SOUTH CAROLINA IS CANCELLED...

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

LAT...LON 3471 8219 3473 8217 3478 8178 3461 8171
      3443 8211
TIME...MOT...LOC 2136Z 072DEG 11KT 3465 8192

$$

RB

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 Jul 17, 5:12 PM EDT, 3 minutes earlier.

Area forecast discussion, Jul 17, 5:12 PM EDT, 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
512 PM EDT TUE JUL 17 2012

.SYNOPSIS...
BERMUDA HIGH PRESSURE WILL CONTINUE TO CONTROL OUR WEATHER THROUGH
MID-WEEK. A FRONTAL BOUNDARY OVER THE OHIO VALLEY IS EXPECTED TO
DROP SOUTH...INTO THE SOUTHEAST STATES LATE FRIDAY. THE FRONT WILL
REMAIN OVER OR JUST SOUTH OF THE REGION THROUGH THE WEEKEND.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
AS OF 430PM EDT...POCKETS OF MODERATE TO STRONG CONVECTION CONTINUE
TO POP UP OVER NC MTS AND NC AND SC PIEDMONT. A FEW OF THESE STORMS
HAVE BECOME SEVERE PRODUCING STRONG DOWNBURSTS. ADDITIONAL SH AND TS
ACTIVITY IS EXPECTED TO CONTINUE THRU 00Z OR SO WITH THINGS QUIETING
DOWN ONCE DAYTIME HEATING STOPS.

PREVIOUS DISCUSSION...
AT 200 PM EDT TUESDAY...THE CLOSED UPPER LOW OVER FL IS EXPECTED TO
OPEN UP AND DRIFT SLOWLY NORTHWEST INTO GA TONIGHT...WHILE A FLAT
RIDGE REMAINS FORM THE TN VALLEY TO THE MID ATLANTIC COAST.
CONVECTION DEVELOPING OVER THE MOUNTAINS THIS AFTERNOON WILL DRIFT
SLOWLY SE INTO THE FOOTHILL. ADDITIONAL ACTIVITY IS EXPECTED TO
DEVELOP IN THE PIEDMONT LATE THIS AFTERNOON. MODEL SOUNDINGS REMAIN
FAVORABLE FOR GUSTY WINDS. ACTIVITY WILL DIMINISH WITH THE LOSS
OF HEATING THIS EVENING. OVERNIGHT LOWS WILL BR AROUND
CLIMATOLOGICAL NORMALS.

ON WEDNESDAY THE UPPER LOW OVER GA OPENS UP AND DRIFTS FARTHER
NORTH...BUT THE MODELS ARE NOT CLEAR ON WEATHER UPPER IMPULSES
ROUNDING THIS LOW REACH THE OUR AREA. MODEL SOUNDINGS REMAIN
SUPPORTIVE OF CONVECTION...WITH CAPE IN EXCESS OF 1000 J/KG.
CONVECTIVE COVERAGE SHOULD BE AT LEAST AS GREAT AS TODAY...AND EVEN
GREATER IF THE UPPER LOW CAN PROVIDE ADDITIONAL SUPPORT. MAXIMUM
TEMPERATURES WILL REMAIN ABOVE NORMAL AS THE UPPER RIDGE REMAINS
OVER THE AREA. THE HEAT INDEX IS EXPECTED TO APPROACH 100 DEGREES IN
AREAS ALONG AND EAST OF INTERSTATE 77...BUT SHOULD REMAIN BELOW
ADVISORY CRITERIA OF 105 DEGREES.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
AS OF 200 PM TUESDAY...THE SHORT TERM PERIOD WILL GRADUALLY SEE
SOMEWHAT OF A PATTERN CHANGE BY THE CLOSE OF FRIDAY. THE WEAK UPPER
LOW IS FORECAST TO BE OVER THE MIDLANDS OF SC AT THE BEGINNING OF THE
PERIOD WHICH THEN SHOULD MOVE EASTWARD AS HEIGHTS FALL SOMEWHAT
ALONG THE EAST COAST THANKS TO A DIGGING UPPER TROUGH OVER NORTHERN
NEW ENGLAND. BY THE END OF THE PERIOD...A WEAK NW FLOW REGIME IS
FORECAST TO PREVAIL. AT THE SURFACE...A VERY WEAK PRESSURE PATTERN
WILL PERSIST WITH GENERALLY WEAK HIGH PRESSURE ACROSS THE SOUTHERN
APPALACHIANS WITH A LEE TROUGH TO THE EAST. WITH BOUNDARY LAYER
MOISTURE REMAINING HIGH...EXPECT THAT DIURNALLY ENHANCED CONVECTION
WILL BE THE RULE THROUGH THU. LATE DAY CONVECTION ON WED SHOULD WANE
DURING THE EVENING PER LOW LEVEL CIN ADVERTISED IN BUFKIT SOUNDINGS.
CONVECTIVE COVERAGE SHOULD RAMP UP AGAIN ON THU. SEE NO REASON TO
DEVIATE FROM THE RATHER ROBUST AFTERNOON POPS WITH THE GREATEST
COVERAGE MOUNTAIN AREAS. WILL BACK OFF POPS AGAIN THU NIGHT AS LOW
LEVEL CIN DEVELOPS.

THE NORTHERN STREAM TROUGH WILL CONTINUE TO DIG INTO FRI WITH SHEAR
GRADUALLY INCREASING TO ALMOST 20KT IN THE SFC-6KM LAYER. A WEAK
FRONT IS FORECAST TO ENTER THE AREA ON FRI. WITH THE SURFACE
CONVERGENCE AND INCREASING SHEAR EXPECT GOOD CONVECTIVE COVERAGE
WITH LIKELY POPS JUSTIFIED. SOME ORGANIZED CONVECTIVE CLUSTERS COULD
GET GOING ON FRI AND POSE AN ENHANCED SEVERE THREAT. USED A BLEND OF
BIAS CORRECTED MOS TO GENERATE TEMP FIELDS.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
AS OF 215 PM TUESDAY...A WEAK COLD FRONT WILL SLOWLY SAG SOUTHWARD
FRIDAY NIGHT WITH A CONTIUING SHOWER/THUDNERSTORM THREAT ESPECIALLY
ACROSS SOUTHERN AREAS. THE FRONT WILL STALL OVER OVER...OR JUST
SOUTH OF THE FA ON SATURDAY. THE PRESENCE OF THE BOUNDARY WILL SERVE
TO GENERATE SHOWERS AND THUNDERSTORMS WITH THE BEST COVERAGE OUTSIDE
OF THE MOUNTAINS SAT AND SUN AFTERNOONS. THE BOUNDARY GRADUALLY WASHES
OUT BY MON WHICH MEANS WE SHOULD RETURN TO A MORE TYPICAL JULY
PATTERN...WHICH MEANS SCATTERED DIURNAL CONVECTION BOTH MON AND TUE.
STAYED CLOSE TO HPC GUIDANCE. MAX TEMPS ARE FORECAST TO BE A COUPLE
CATEGORIES BELOW AVERAGE THROUGH THE WEEKEND THANKS TO ENHANCED
CLOUD COVER AND WEAK CAD REGIME. TEMPS ARE FORECAST TO WARM TO NEAR
NORMAL MON AND THEN A LITTLE ABOVE AVERAGE ON TUE.

&&

.AVIATION /21Z TUESDAY THROUGH SUNDAY/...
AT KCLT...SCATTERED CONVECTION IS EXPECTED TO DEVELOP TODAY...BUT
UNLESS IT OCCURS OVER THE TERMINAL...A RESTRICTION IS NOT LIKELY.
CONFIDENCE IS HIGH ENOUGH TO CARRY TS AND A LOW VFR CIG WITH CB. A
GUIDANCE CONSENSUS DOES NOT FAVOR MORNING FOG...AND MODEL TIME
HEIGHTS SUGGEST LESS CUMULUS AND MORE CIRRUS AFTER MIDNIGHT. LIGHT
WINDS REA EXPECTED TO FAVOR THE SW BY LATER THIS AFTERNOON.

ELSEWHERE...CONVECTION WILL HAVE THE MOST COVERAGE IN THE
MOUNTAINS...MAKING KAVL MOST VULNERABLE...BUT CONFIDENCE IS NOT HIGH
ENOUGH FOR RESTRICTIONS. WILL CARRY TS AND LOW VFR CIG WITH CB THIS
AFTERNOON. LATE TONIGHT LOW CLOUDS SHOULD DECREASE...WHILE ANVIL
DEBRIS REMAINS. GUIDANCE STILL LIKE DAYBREAK FOG AT KAVL...BUT IS
NOT VERY SUPPORTIVE AT FOOTHILL SITES. GIVEN THAT GUIDANCE HAS BEEN
OVERDONE AT KAVL...VFR WILL BE MAINTAINED THERE AT THIS TIME. LIGHT
WINDS WILL TAKE ON A WESTERLY COMPONENT...EXCEPT AT KAVL WHERE THEY
WILL CHANNEL UP VALLEY FROM THE NW.

OUTLOOK...SCATTERED THUNDERSTORMS WILL CONTINUE LATE WEDNESDAY...
ESPECIALLY OVER THE MOUNTAINS. A COLD FRONT WILL REACH THE AREA
THURSDAY...REMAINING INTO THE WEEKEND...AND INCREASING THE CHANCE
OF THUNDER...LOW CIGS...AND FOG.

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...JPT
SHORT TERM...LG
LONG TERM...LG
AVIATION...JPT

Hazardous weather outlook, Jul 17, 3:45 PM EDT, 1 hour 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
345 PM EDT TUE JUL 17 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-181945-
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-
345 PM EDT TUE JUL 17 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.

SCATTERED SLOW MOVING THUNDERSTORMS WILL CONTINUE OVER THE REGION
INTO THIS EVENING. A FEW OF THE THUNDERSTORMS MAY PRODUCE SMALL
AREAS OF WIND DAMAGE. LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE WITH
THE STRONGER STORMS AND FLOODING OF POOR DRAINAGE AREAS MAY
DEVELOP. WHILE AN ISOLATED SEVERE STORM IS POSSIBLE NEARLY
ANYWHERE...THERE IS A GREATER CHANCE OVER THE MOUNTAINS.

THE EFFECTS OF HEAVY RAIN AND SATURATED SOILS WILL ENHANCE THE
THREAT OF TREES FALLING.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

LG

In the hours before

Local storm report, Jul 17, 3:51 PM EDT, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
351 PM EDT TUE JUL 17 2012

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

0224 PM     TSTM WND DMG     HENDERSONVILLE          35.32N 82.46W
07/17/2012                   HENDERSON          NC   911 CALL CENTER

            MULTIPLE TREES AND POWER LINES DOWN ON 4TH AVE WEST NEAR
            NORTH WASHINGTON ST.

&&

JOH

Special weather statement, Jul 17, 3:59 PM EDT, 1 hour 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
359 PM EDT TUE JUL 17 2012

NCZ049-172030-
YANCEY-
359 PM EDT TUE JUL 17 2012

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL YANCEY COUNTY THROUGH
430 PM EDT...

AT 355 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTHWEST OF MICAVILLE...OR 3 MILES
SOUTHEAST OF BURNSVILLE...MOVING WEST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  BURNSVILLE...

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

LAT...LON 3595 8219 3593 8216 3582 8215 3581 8213
      3578 8234 3580 8234 3582 8236 3582 8241
      3583 8242 3586 8242 3596 8246 3599 8219

RB

Special weather statement, Jul 17, 4:07 PM EDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
407 PM EDT TUE JUL 17 2012

SCZ014-172045-
CHESTER-
407 PM EDT TUE JUL 17 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN CHESTER COUNTY THROUGH
445 PM EDT...

AT 405 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES EAST OF BLACKSTOCK...OR 13 MILES
SOUTHEAST OF CHESTER...MOVING WEST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  BLACKSTOCK...

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

LAT...LON 3456 8133 3457 8133 3471 8132 3464 8097
      3454 8098

RB

Special weather statement, Jul 17, 4:17 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
417 PM EDT TUE JUL 17 2012

NCZ071-082-172045-
MECKLENBURG-UNION-
417 PM EDT TUE JUL 17 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN UNION AND SOUTHEASTERN
MECKLENBURG COUNTIES THROUGH 445 PM EDT...

AT 416 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR UNIONVILLE...OR 7 MILES NORTH OF MONROE...
MOVING WEST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  UNIONVILLE...
  FAIRVIEW...
  STALLINGS...

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

LAT...LON 3499 8041 3499 8077 3521 8075 3518 8047
      3517 8046 3517 8043 3517 8039

RB

Special weather statement, Jul 17, 4:23 PM EDT, 52 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
423 PM EDT TUE JUL 17 2012

NCZ082-172100-
UNION-
423 PM EDT TUE JUL 17 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN UNION COUNTY THROUGH
500 PM EDT...

AT 422 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES NORTH OF TRINITY...OR 6 MILES SOUTH OF
MONROE...MOVING WEST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  MONROE...
  MINERAL SPRINGS...

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

LAT...LON 3481 8048 3481 8073 3499 8075 3500 8042
      3482 8039

RB

Special weather statement, Jul 17, 4:58 PM EDT, 17 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
458 PM EDT TUE JUL 17 2012

NCZ071-082-172130-
MECKLENBURG-UNION-
458 PM EDT TUE JUL 17 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN UNION AND SOUTHEASTERN
MECKLENBURG COUNTIES THROUGH 530 PM EDT...

AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTHWEST OF FAIRVIEW...OR 9 MILES NORTH
OF MONROE...MOVING WEST AT 10 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  MINT HILL...
  STALLINGS...

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

LAT...LON 3505 8050 3507 8082 3523 8080 3520 8053
      3518 8049

RB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 8:22 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenville, Greenwood, Laurens, Oconee and 1 more	83 min
Jul 16, 9:44 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	18 min
Jul 17, 12:18 PM EDT	Severe Thunderstorm Warning	GSP	Oconee, Pickens	57 min
Jul 17, 12:28 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	62 min
Jul 17, 2:23 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	48 min
Jul 17, 4:07 PM EDT	Special Weather Statement	GSP	Chester	38 min
Jul 17, 5:54 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson	22 min
Jul 17, 6:44 PM EDT	Special Weather Statement	GSP	Spartanburg	31 min
Jul 17, 7:15 PM EDT	Special Weather Statement	GSP	Spartanburg	30 min
Jul 17, 7:19 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	34 min
Jul 17, 7:37 PM EDT	Special Weather Statement	GSP	Anderson	38 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.