Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 447, NWS Greenville-Spartanburg, SC

July 20, 20124 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 20, 2012, 3:02 PM EDT for 4 counties in South Carolina. It was in force for 58 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 20, 2012, 3:02 PM EDT (19:02 UTC)
Expired: Jul 20, 2012, 4:00 PM EDT
In force: 58 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Cherokee County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Greer radar (KGSP), 62 km from the middle of the area, began a volume at 19:05 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 20, 3:09 PM EDT	TSTM WND DMG	4 N Jonesville, SC	ONE TREE BLEW OVER ONTO A POWERLINE NEAR THE INTERSECTION OF TINSLEY ROAD AND JERUSALEM ROAD. THIS CAUSED SOME POWER OUTAGES MAINLY ON TINSLEY ROAD.

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 one storm report to this severe thunderstorm warning; the first came 7 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, 7.0 hours before the alert went out and 201 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: 629 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 765 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 86 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.

354 
WUUS52 KGSP 201902
SVRGSP
SCC021-083-087-091-202000-
/O.NEW.KGSP.SV.W.0447.120720T1902Z-120720T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
302 PM EDT FRI JUL 20 2012

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CHEROKEE COUNTY IN UPSTATE SOUTH CAROLINA...
  EAST CENTRAL SPARTANBURG COUNTY IN UPSTATE SOUTH CAROLINA...
  NORTHERN UNION COUNTY IN UPSTATE SOUTH CAROLINA...
  WESTERN YORK COUNTY IN UPSTATE SOUTH CAROLINA...

* UNTIL 400 PM EDT

* AT 302 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
  JONESVILLE...OR 11 MILES NORTHWEST OF UNION...AND MOVING EAST AT 15
  MPH.

* THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  HICKORY GROVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. 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 3475 8178 3492 8185 3511 8132 3485 8122
      3482 8139 3482 8147 3480 8148
TIME...MOT...LOC 1902Z 252DEG 15KT 3486 8171

$$

HG

3 follow-up statements

203 
WWUS52 KGSP 201918
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
318 PM EDT FRI JUL 20 2012

SCC083-201928-
/O.CAN.KGSP.SV.W.0447.000000T0000Z-120720T2000Z/
SPARTANBURG SC-
318 PM EDT FRI JUL 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SPARTANBURG
COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED EAST OF SPARTANBURG 
COUNTY.

LAT...LON 3477 8170 3496 8171 3511 8132 3485 8122
      3482 8139 3482 8147 3480 8148
TIME...MOT...LOC 1918Z 255DEG 17KT 3488 8158

$$

SCC021-087-091-202000-
/O.CON.KGSP.SV.W.0447.000000T0000Z-120720T2000Z/
CHEROKEE SC-YORK SC-UNION SC-
318 PM EDT FRI JUL 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
UNION...WESTERN YORK AND SOUTHEASTERN CHEROKEE COUNTIES IN UPSTATE
SOUTH CAROLINA UNTIL 400 PM EDT...

AT 318 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 5 MILES
NORTHEAST OF JONESVILLE...OR 11 MILES NORTH OF UNION...MOVING EAST AT
20 MPH.

THE SEVERE THUNDERSTORM WILL IMPACT LOCATIONS NEAR...
  HICKORY GROVE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. 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 3477 8170 3496 8171 3511 8132 3485 8122
      3482 8139 3482 8147 3480 8148
TIME...MOT...LOC 1918Z 255DEG 17KT 3488 8158

$$

HG

900 
WWUS52 KGSP 201939
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
339 PM EDT FRI JUL 20 2012

SCC021-087-201948-
/O.CAN.KGSP.SV.W.0447.000000T0000Z-120720T2000Z/
CHEROKEE SC-UNION SC-
339 PM EDT FRI JUL 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL UNION AND
SOUTHEASTERN CHEROKEE COUNTIES IN UPSTATE SOUTH CAROLINA IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED EAST OF 
CHEROKEE AND UNION COUNTIES.

LAT...LON 3482 8136 3482 8147 3485 8146 3491 8148
      3505 8146 3505 8141 3508 8140 3511 8132
      3485 8122
TIME...MOT...LOC 1938Z 255DEG 17KT 3502 8136 3483 8138

$$

SCC091-202000-
/O.CON.KGSP.SV.W.0447.000000T0000Z-120720T2000Z/
YORK SC-
339 PM EDT FRI JUL 20 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN YORK
COUNTY 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 HICKORY GROVE TO LOCKHART...
MOVING EAST AT 20 MPH.

THESE SEVERE THUNDERSTORMS WILL AFFECT MAINLY RURAL AREAS OF WESTERN 
YORK COUNTY INCLUDING LOCATIONS EAST OF SMYRNA TO SHARON TO EAST OF 
BULLOCK CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LARGE HAIL CAN CAUSE MAJOR PROPERTY DAMAGE...ESPECIALLY TO VEHICLES.
DAMAGING WINDS MAY BLOW DOWN SCATTERED TREES AND POWER LINES. 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 3482 8136 3482 8147 3485 8146 3491 8148
      3505 8146 3505 8141 3508 8140 3511 8132
      3485 8122
TIME...MOT...LOC 1938Z 255DEG 17KT 3502 8136 3483 8138

$$

HG

612 
WWUS52 KGSP 201953
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
353 PM EDT FRI JUL 20 2012

SCC091-202003-
/O.EXP.KGSP.SV.W.0447.000000T0000Z-120720T2000Z/
YORK SC-
353 PM EDT FRI JUL 20 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN YORK COUNTY WILL
EXPIRE AT 400 PM EDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW 
SEVERE LEVELS. HOWEVER...HEAVY RAIN IS STILL POSSIBLE WITH THESE 
THUNDERSTORMS...AND ISOLATED FLOODING OF LOW LYING AREAS COULD 
RESULT.

LAT...LON 3482 8136 3482 8147 3485 8146 3491 8148
      3505 8146 3505 8141 3508 8140 3511 8132
      3485 8122
TIME...MOT...LOC 1953Z 255DEG 17KT 3504 8128 3485 8130

$$

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 Jul 20, 1:51 PM EDT, 1 hour 11 minutes earlier.

Area forecast discussion, Jul 20, 1:51 PM EDT, 1 hour 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
151 PM EDT FRI JUL 20 2012

.SYNOPSIS...
A COLD FRONT WILL APPROACH FROM THE NORTHWEST TODAY AND ARRIVE ON
SATURDAY. THE FRONT IS EXPECTED TO STALL OVER THE AREA THROUGH THE
WEEKEND BEFORE DISSIPATING MONDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
AT 130 PM EDT... CONVECTIVE STORMS ARE DEVELOPING RAPIDLY ACROSS
UPSTATE SOUTH CAROLINA INTO THE SOUTHERN PIEDMONT OF NORTH CAROLINA.
EXPECT CONVECTIVE WEATHER TO BE PRIMARY FEATURE THIS AFTERNOON. RAP
CAPES DISPLAY AN AXIS OF 3000 J/KG EXTENDING FROM SOUTH OF KGSP TO
VICINITY KCLT.

PREVIOUS DISCUSSION...
AT 1030 AM EDT... MORNING DATA CONTINUE TO INDICATE POTENTIAL FOR
THUNDERSTORMS DURING THE AFTERNOON AND EVENING... BUT CLOUDINESS
FROM OVERNIGHT MCS TO OUR WEST AND FRONT TO THE NORTH IS SPREADING
OVER MUCH OF THE CWA. CLOUDS COULD PUT A LITTLE BIT OF A DAMPER OR
DELAY ON CONVECTIVE INITIATION... BUT THERE WILL BE PLENTY OF
OPPORTUNITY FOR CLOUDS TO ERODE THUS ALLOWING BOUNDARY LAYER TO
COLLECT SOME WARMTH.  IN THE VERY NEAR TERM... WILL DECREASE POPS
BUT INCREASE THEM TO CURRENT FORECAST VALUE BY MID TO LATE AFTERNOON.
AFTERNOON RAP CAPES ARE IN THE 1500 TO 3000 J/KG RANGE WITH AXIS OF
HIGHEST CAPE FROM APPROXIMALY KAND TO KCLT BY 17Z. NAM CAPES ARE A
LITTLE LOWER... GENERALLY 1000 TO 2000 J/KG... EXCEPT LESS THAN 1000
OVER MOUNTAINS. WIND PROFILES IDENTIFY VERY LITTLE SHEAR... SO PULSE
STORMS WITH LITTLE ORGANIZATION EXPECTED. QUITE POSSIBLE THAT SOME
MULTICELL CLUSTERS CAN DEVELOP... BUT RAP DCAPES ARE ONLY AROUND 500
J/KG SO THAT LOWERS CONFIDENCE A LITTLE THAT MAJOR COLD POOLS WILL
DEVELOP. HOWEVER... NAM MOVES AN AXIS OF DCAPE AROUND 1000 J/KG
ACROSS CWA FROM WEST TO EAST LATER TODAY. POTENTIAL FOR THAT FEATURE
WILL NEED TO BE MONITORED.

AS OF 605 AM EDT...MCS ACTIVITY HAS BEEN WEAKENING TO OUR WEST...BUT
IT IS STILL GENERATING QUITE A FEW CLOUD TO GROUND LIGHTNING STRIKES
OVER CENTRAL TENN AND NORTHERN ALABAMA. OVER THE PAST FEW
HOURS...THE ONLY SHOWER ACTIVITY WE HAVE SEEN HAS BEEN OVER THE FAR
WESTERN NC MTS...HOWEVER COVERAGE SHOULD BEGIN TO INCREASE LATER
THIS MORNING AS THINGS BEGIN TO HEAT UP AND THE FIRST UPPER
SHORTWAVE APPROACHES. TEMPS ARE HOLDING A BIT WARMER THAN
ANTICIPATED...SO I BUMPED UP THE MIN TEMPS A DEGREE OR 2.

PREVIOUS DISCUSSION...
A COLD FRONT WILL APPROACH FROM THE NORTH LATER TODAY...WHILE A PAIR
OF FAIRLY POTENT LOOKING H5 SHORTWAVES MOVE INTO THE BASE OF THE
TROUGH. WITH THE ATMOSPHERE REMAINING MOIST AND UNSTABLE...I KEEP
POPS AT LIKELY OVER MOST OF THE CWFA DURING THE LATE AFTERNOON AND
THRU THE LATE EVENING HOURS. CONDITIONS WILL BE SUFFICIENT FOR
SEVERE THUNDERSTORMS AGAIN...AND WITH UNIDIRECTIONAL SHEAR
PRESENT...SOME ORGANIZATION IS POSSIBLE...ESPECIALLY IN THE
PIEDMONT. WITH BETTER STEERING FLOW AND MOVING STORMS...FLOODING
SHOULD NOT BE AS MUCH OF A CONCERN...HOWEVER LOCALIZED...HIGH QPF
WILL BE POSSIBLE FROM TRAINING OR REPEATING CELLS. MAXIMUM
TEMPERATURES WILL BE NEAR NORMAL...AS LONG AS CLOUD COVER BREAKS
ENOUGH TO ALLOW SUFFICIENT HEATING.

&&

.SHORT TERM /SATURDAY THROUGH SUNDAY NIGHT/...
AT 230 PM EDT FRIDAY...AN UPPER TROUGH AXIS WILL REMAIN ALONG THE
EAST COAST FROM SATURDAY NIGHT THROUGH MONDAY...WHILE A RIDGE
REMAINS OVER THE PLAINS. A WEAKENING...STALLED SURFACE FRONT WILL
REMAIN OVER OUR AREA THROUGH MONDAY. ALTHOUGH THERE DOES NOT APPEAR
TO BE MUCH ISENTROPIC UPGLIDE OVER THE BOUNDARY...SHORTWAVES MOVING
INTO THE UPPER TROUGH AND OVER THE VICINITY OF THE FRONT WILL
SUPPORT PRECIPITATION THROUGH THE PERIOD...MAXIMIZED WITH GREATER
INSTABILITY DURING DAYLIGHT HOURS. WITHOUT A STRONG LIFTING
MECHANISM...PRECIPITATION AMOUNTS ARE EXPECTED TO BE MODERATE...BUT
SEVERAL DAYS OF RAIN COULD LEAD TO SOME LOCALIZED HYDROLOGICAL
PROBLEMS WITH TIME. MINIMUM TEMPERATURES WILL BE SLIGHTLY ABOVE
NORMAL...AND MAXIMUM TEMPERATURES NEAR NORMAL.

&&

.LONG TERM /MONDAY THROUGH THURSDAY/...
AS OF 145 PM FRIDAY...THE CWFA WILL BE IN AN AREA BETWEEN RIDGING TO
THE SOUTH AND WEST AND NW TO SE ORIENTED NRN STREAM FLOW TO THE
NORTH. THE FLOW WILL BE CLOSE ENUF THAT WE SHUD SEE SOME EFFECT FROM
A SERIES OF WEAK SHORT WAVES MOVING THRU THE FLOW. AT THE SFC...A
BACK DOOR COLD FRONT WILL APPROACH THE AREA BUT STALL TO OUR NORTH.
A SERIES OF LOW PRESSURE WAVES WILL MOVE WEST ALONG THE FRONT. OVER
OUR CWFA...A LEE TROF AND COPIOUS LOW LEVEL MOISTURE WILL REMAIN IN
PLACE THRU THE PERIOD. THIS SHUD LEAD TO GENERALLY SCT DIURNAL
CONVECTION EACH DAY. LOWS WILL BE NEARLY STEADY AROUND 5 DEGREES
ABOVE NORMAL. HIGHS START OUT NEARLY 5 DEGREES ABOVE NORMAL THEN
FALL A COUPLE OF DEGREES BY THE END OF THE PERIOD.

&&

.AVIATION /18Z FRIDAY THROUGH WEDNESDAY/...
AT KCLT... UPDATED 18Z TAF INCLUDES TEMPO FOR THUNDERSTORMS DURING
AFTERNOON. OTHERWISE... CONVECTIVE CLOUD BASES 4-5K FT. SURFACE WIND
WILL BE PREDOMINANTLY FROM SOUTHWEST AT LESS THAN 10 KT... BUT
STRONG AND GUSTY VICINITY THUNDERSTORMS. THUNDERSTORMS WILL BE
CAPABLE OF PRODUCING SMALL HAIL. OVERNIGHT... EXPECT CLOUD BASES
4-5K FT CONTINUING BUT LOWERING TO 2-4 KT FT.

REMAINDER TAF SITES... SCATTERED THUNDERSTORMS DURING AFTERNOON WILL
PRODUCE CEILING AND VISIBILITY RESTRICTIONS. EXCEPT VARIABLE WIND AT
KAVL SOUTHWEST WIND LESS THAN 10 KT EXCEPT STRONG AND GUSTY NEAR
THUNDERSTORMS. THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL.
OVERNIGHT... EXPECT CLOUD BASES 3-5K FT WITH SOME VISIBILITY
RESTRICTIONS IN FOG TOWARD SUNRISE... SPECIALLY VICINITY KAVL.

OUTLOOK...AS A COLD FRONT STALLS OVER THE AREA...SCATTERED TO
NUMEROUS (MAINLY DIURNAL) CONVECTION AND ASSOCIATED RESTRICTIONS
WILL PERSIST THROUGH THE WEEKEND. LATE NIGHT/MORNING FOG AND LOW
STRATUS PROBABILITIES WILL ALSO REMAIN FAIRLY HIGH...ESPECIALLY IN
THE 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...JAT
NEAR TERM...LGL
SHORT TERM...JAT
LONG TERM...RWH
AVIATION...LGL

Hazardous weather outlook, Jul 20, 4:11 AM EDT, 10 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
411 AM EDT FRI JUL 20 2012

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-210815-
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-
411 AM EDT FRI JUL 20 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 TO NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS THE AREA
THIS AFTERNOON AND EVENING. THE MAIN THREATS WITH THESE STORMS WILL
BE LARGE HAIL AND DAMAGING STRAIGHT-LINE WINDS. PERIODS OF HEAVY
RAIN ARE ALSO EXPECTED AND POTENTIAL FLOODING IS A CONCERN...
ESPECIALLY IF SEVERAL STORMS TRAIN OVER THE SAME AREAS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

In the hours before

Local storm report, Jul 20, 9:27 AM EDT, 5 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
927 AM EDT FRI JUL 20 2012

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

0509 PM     TSTM WND DMG     4 NE BOGER CITY         35.52N 81.15W
07/19/2012                   LINCOLN            NC   TRAINED SPOTTER

            LARGE LIMBS DOWN NEAR PUMPKIN CENTER.

&&

TW

Special weather statement, Jul 20, 2:22 PM EDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
222 PM EDT FRI JUL 20 2012

SCZ007-008-201915-
CHEROKEE-SPARTANBURG-
222 PM EDT FRI JUL 20 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN SPARTANBURG AND
NORTHWESTERN CHEROKEE COUNTIES THROUGH 315 PM EDT...

AT 220 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES NORTHEAST OF INMAN...OR 11 MILES
NORTHWEST OF SPARTANBURG...MOVING NORTHEAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  LAKE BOWEN...
  COWPENS...
  MAYO...
  CHESNEE...

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

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3490 8189 3504 8220 3519 8210 3518 8168

RWH

Special weather statement, Jul 20, 2:26 PM EDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
226 PM EDT FRI JUL 20 2012

SCZ014-201915-
CHESTER-
226 PM EDT FRI JUL 20 2012

...A STRONG THUNDERSTORM WILL AFFECT CHESTER COUNTY THROUGH 315 PM
EDT...

AT 224 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CORNWELL...OR 8 MILES SOUTH OF CHESTER...
MOVING EAST AT 15 MPH.

THIS STORM WILL IMPACT LOCATIONS NEAR...
  CHESTER...
  BLACKSTOCK...
  RICHBURG...
  FISHING CREEK RESERVOIR...

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

FREQUENT LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...TRY TO
GET INDOORS OR INTO A HARD TOPPED VEHICLE. OTHERWISE...STAY AWAY FROM
OPEN AREAS AND ISOLATED HIGH OBJECTS SUCH AS TREES. WHEN INDOORS...
STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING WIRED ELECTRONIC
DEVICES. TRY TO UNPLUG UNNECESSARY APPLIANCES BEFORE THE STORM
APPROACHES.

LAT...LON 3465 8089 3455 8087 3454 8095 3455 8108
      3456 8131 3473 8137 3480 8088 3470 8085

RWH

Special weather statement, Jul 20, 2:50 PM EDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
250 PM EDT FRI JUL 20 2012

SCZ009-201915-
YORK-
250 PM EDT FRI JUL 20 2012

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN YORK COUNTY THROUGH
315 PM EDT...

AT 250 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR CATAWBA...OR 9 MILES SOUTHEAST OF ROCK
HILL...MOVING EAST AT 15 MPH.

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

LAT...LON 3482 8089 3482 8100 3482 8101 3494 8100
      3495 8086 3484 8086

HG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 8:15 PM EDT	Special Weather Statement	GSP	Chester	30 min
Jul 19, 9:29 PM EDT	Special Weather Statement	GSP	Chester	31 min
Jul 20, 2:22 PM EDT	Special Weather Statement	GSP	Spartanburg	53 min
Jul 20, 2:26 PM EDT	Special Weather Statement	GSP	Chester	49 min
Jul 20, 2:50 PM EDT	Special Weather Statement	GSP	York	25 min
Jul 20, 3:00 PM EDT	Areal Flood Advisory	GSP	Spartanburg	57 min
Jul 20, 3:46 PM EDT	Special Weather Statement	GSP	York	29 min
Jul 20, 4:02 PM EDT	Special Weather Statement	GSP	York	28 min
Jul 20, 5:49 PM EDT	Special Weather Statement	GSP	Laurens	26 min
Jul 20, 7:38 PM EDT	Special Weather Statement	GSP	Pickens	37 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.