Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 276, NWS Greenville-Spartanburg, SC

July 13, 2010Cherokee County, York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 13, 2010, 3:12 PM EDT for Cherokee County, York County, South Carolina. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 13, 2010, 3:12 PM EDT (19:12 UTC)
Expired: Jul 13, 2010, 4:15 PM EDT
In force: 63 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Cherokee County, SC, York County, SC

The radar

The Greer radar (KGSP), 76 km from the middle of the area, began a volume at 19:13 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 13, 2:13 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 7.2 hours before the alert went out and 181 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: 403 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 680 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

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 13, 2:54 PM EDT, 18 minutes earlier.

Area forecast discussion, Jul 13, 2:54 PM EDT, 18 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
254 PM EDT TUE JUL 13 2010

.SYNOPSIS...
VERY MOIST SOUTHERLY FLOW WILL GIVE WAY TO A SLIGHTLY DRIER AIRMASS
WEDNESDAY AND THURSDAY. TYPICAL SUMMERTIME BERMUDA HIGH PRESSURE
WILL BE FEATURED ACROSS THE REGION INTO THE WEEKEND.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
CONVECTION DEVELOPING ACROSS THE MTNS WILL INCREASE IN COVERAGE AND
MOVE EAST ACROSS THE FOOTHILLS AND PIEDMONT LATE THIS AFTERNOON.
SOME SVR STORMS ARE LIKELY AGAIN AS CAPE VALUES ARE BETWEEN 1000 AND
3000 J/KG. SHEAR HAS INCREASED AS WELL AS A SHARP TROF MOVES TOWARD
THE AREA. THIS WILL HELP WITH STORM ORGANIZATION. A DIFFERENCE FROM
MONDAY IS THE DRIER MID LEVEL AIR. DCAPES ARE BETWEEN 1000 AND 1500
J/KG MAKING DOWNBURST WINDS EVEN MORE LIKELY. WITH THE FASTER STORM
MOVEMENT...FLOODING MAY BE LESS LIKELY. HOWEVER...PW IS STILL QUITE
HIGH AND THE STORMS SHUD BE EFFICIENT RAIN MAKERS. SVR STORMS COULD
DEVELOP AT ALMOST ANY LOCATION ACROSS THE AREA...THEREFORE A SVR
STORM WATCH HAS BEEN ISSUED FOR THE ENTIRE CWFA.

THE CONVECTION WILL WANE FROM WEST TO EAST DURING THE EVENING AS THE
TROF MOVES EAST AND DRIER AIR MOVES IN. LOW LEVEL MOISTURE WILL
REMAIN QUITE HIGH...SO EVEN THO H85 FLOW BECOMES WEST TO NORTHWEST
LOW LEVEL CLOUDS COULD REDEVELOP. LOWS WILL BE WELL ABOVE NORMAL
ONCE AGAIN.

WEAK UPPER RIDGING APPROACHES FROM THE WEST ON WED. HOWEVER...THE
SFC BOUNDARY WILL HANG UP JUST SOUTH OF THE AREA. LINGERING LOW
LEVEL MOISTURE WILL ALLOW INSTABILITY TO INCREASE...ESPECIALLY SOUTH
OF I-85 EVEN WITH INCREASED MID LEVEL TEMPS. WITH THE WEAK
INSTABILITY AND CONTINUED LOW LEVEL MOISTURE...WILL INCLUDE ISOLATED
AFTERNOON TSRA. COVERAGE SHUD REMAIN LIMITED WITHOUT A STRONG
FORCING MECHANISM LIKE TUE. ABOVE NORMAL HIGHS CAN BE EXPECTED.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY NIGHT/...
AS OF 250 PM TUESDAY...H5 RIDGING WILL BUILD OVER THE FORECAST AREA
ON THURSDAY. NAM FORECAST SOUNDINGS INDICATE A HIGH SUBSIDENCE
INVERSION AROUND H6 WILL EXIST ACROSS THE REGION. DEEP CONVECTION
INITIATION WILL LIKELY FALL LATE IN THE AFTERNOON AND EARLY EVENING.
I WILL PAINT THE MTNS WITH SCHC TO CHC POPS...WITH SCHC EAST ACROSS
THE FOOTHILLS AND PIEDMONT. HIGH TEMPERATURES SHOULD PEAK AROUND 5
DEGREES ABOVE NORMAL. CONDITIONS CHANGE VERY LITTLE INTO
FRIDAY...HOWEVER...THE MOISTURE CONTENT IN THE LOW TO MID LEVELS ARE
SLIGHTLY GREATER FROM THURSDAY. THEREFORE...IT APPEARS THAT DEEP
CONVECTION WILL BEGIN A LITTLE EARLIER AND COVERAGE WILL INCREASE TO
SOLID CHC. INCREASE CU...DEEP CONVECTION...AND SLIGHTLY COOLER
THICKNESSES SHOULD SUPPORT HIGHS AROUND NORMAL.

&&

.LONG TERM /SATURDAY THROUGH TUESDAY/...
AS OF 1 PM TUESDAY...MEDIUM RANGE MODELS AGREE THAT THE FORECAST
AREA WILL REMAIN BETWEEN A BERMUDA HIGH AND RIDGE CENTERED OVER THE
FOUR CORNERS FROM THE WEEKEND THROUGH EARLY NEXT WEEK. IN FACT...MID
LEVEL HEIGHTS OVER THE FORECAST AREA INDICATE A LONGWAVE TROF
LINGERING BETWEEN THE MISSISSIPPI RIVER AND THE EAST COAST.
TEMPERATURE GUIDANCE INDICATES THAT TEMPS WILL REMAIN SLIGHTLY ABOVE
NORMAL WITH AFTERNOON DEWPOINTS NEAR 70 DEGREES. THE COMBINATION OF
THE WARM AND HUMID LLVL CONDITIONS AND TROF IN THE MID LEVELS WILL
RESULT IN MODERATE AFTERNOON AND EVENING INSTABILITY THROUGH THE
PERIOD. I WILL CONTINUE TO FORECAST SCHC TO CHC COVERAGE FOR SHRA
AND TSRA.

&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
AT KCLT AND ELSEWHERE...MVFR CIGS ARE QUICKLY DISSIPATING BUT BEING
REPLACED WITH LOW VFR CIGS. CONVECTION IS ALSO RAPIDLY DEVELOPING
OVER THE MTNS. EXPECT THE COVERAGE TO INCREASE THEN SPREAD EAST AND
SOUTH INTO THE FOOTHILLS AND PIEDMONT THRU THE AFTERNOON. HAVE JUST
GONE WITH CB MENTION FOR NOW AS TIMING IS STILL QUITE UNCERTAIN.
SOUTH TO SOUTHWEST WINDS...WITH POSSIBLE LOW END GUSTS...WILL
DIMINISH DURING THE EVENING AS STORMS MOVE SOUTH AND EAST OF THE
AREA. DEEP MOISTURE MOVES OUT AS WELL...BUT LOW LEVEL MOISTURE
CONTINUES. WEST TO NW H85 FLOW DEVELOPS...BUT WEAK LOW LEVEL
ISENTROPIC LIFT CONTINUES OVERNIGHT. THEREFORE...EXPECT A WIDE
VARIETY OF VFR/MVFR AND EVEN IFR CIGS AND VSBY BY DAYBREAK.
CONDITIONS SHUD QUICKLY IMPROVE TO VFR BY MID MORNING. LIGHT AND
VARIABLE WINDS OVERNIGHT BECOME LIGHT WEST TO NORTHWEST AFTER
DAYBREAK.

OUTLOOK...INSTABILITY WILL RETURN WED AFT...BUT MOISTURE AND FORCING
WILL BE MUCH LESS THAN TUE...SO ISOLATED CONVECTION POSSIBLE. MORE
TYPICAL SUMMER WEATHER WILL RETURN TO THE AREA THURSDAY...MEANING
PATCHY MORNING FOG AND AFTERNOON/EVENING SHOWERS AND THUNDERSTORMS
THRU SAT.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...TJB
NEAR TERM...RWH
SHORT TERM...NED
LONG TERM...NED
AVIATION...RWH

Hazardous weather outlook, Jul 13, 3:06 PM EDT, 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
306 PM EDT TUE JUL 13 2010

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-141915-
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-
306 PM EDT TUE JUL 13 2010

...SEVERE THUNDERSTORM WATCH 466 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...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.

   SEVERE THUNDERSTORM WATCH.

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

ISOLATED TO SCATTERED...LOCALLY SEVERE THUNDERSTORMS ARE POSSIBLE
EACH AFTERNOON AND EVENING FOR THE REST OF THE WEEK.

.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

Local storm report, Jul 13, 10:18 AM EDT, 4 hours 54 minutes before

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Local storm report, Jul 13, 10:22 AM EDT, 4 hours 50 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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Local storm report, Jul 13, 1:57 PM EDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
157 PM EDT TUE JUL 13 2010

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

0400 PM     FLOOD            4 SSE MINT HILL         35.13N 80.63W
07/12/2010                   UNION              NC   OTHER FEDERAL

            STATE ROAD 1524 NEAR INDIAN TRAIL FLOODED BY GOOSE CREEK

&&

PTANNER

Local storm report, Jul 13, 2:07 PM EDT, 1 hour 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
207 PM EDT TUE JUL 13 2010

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

0545 PM     FLOOD            INDIAN TRAIL            35.07N 80.68W
07/12/2010                   UNION              NC   OFFICIAL NWS OBS

            GOOSE CREEK AT HIGHWAY 1525 REACHED 9 FEET...50 YEAR
            FLOOD LEVEL.

&&

NED

Special weather statement, Jul 13, 2:14 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
214 PM EDT TUE JUL 13 2010

NCZ504>506-508-131845-
EASTERN MCDOWELL-GREATER BURKE-GREATER RUTHERFORD-MCDOWELL MOUNTAINS-
214 PM EDT TUE JUL 13 2010

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN RUTHERFORD...
SOUTHEASTERN MCDOWELL AND SOUTHERN BURKE COUNTIES THROUGH 245 PM
EDT...

AT 210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTH OF SUGAR HILL...OR 12 MILES SOUTH
OF MARION...MOVING EAST AT 20 MPH.

THIS STORM WILL BE NEAR...
  THERMAL CITY...
  THERMAL CITY...
  GLENWOOD...
  DYSARTSVILLE...

PEOPLE IN NORTHERN RUTHERFORD...SOUTHEASTERN MCDOWELL AND SOUTHERN
BURKE COUNTIES...INCLUDING THE FOLLOWING LOCATIONS...

THERMAL CITY...GLENWOOD AND DYSARTSVILLE...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3576 8169 3551 8169 3541 8210 3547 8213
      3552 8209 3552 8214 3553 8216 3557 8218

NED

Special weather statement, Jul 13, 2:14 PM EDT, 58 minutes before

SPECIAL WEATHER STATEMENT...CORRECTED FOR PATHCAST
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
214 PM EDT TUE JUL 13 2010

NCZ504>506-508-131845-
EASTERN MCDOWELL-GREATER BURKE-GREATER RUTHERFORD-MCDOWELL MOUNTAINS-
214 PM EDT TUE JUL 13 2010

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN RUTHERFORD...
SOUTHEASTERN MCDOWELL AND SOUTHERN BURKE COUNTIES THROUGH 245 PM
EDT...

AT 210 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTH OF SUGAR HILL...OR 12 MILES SOUTH
OF MARION...MOVING EAST AT 20 MPH.

THIS STORM WILL BE NEAR...
  THERMAL CITY...
  GLENWOOD...
  DYSARTSVILLE...

PEOPLE IN NORTHERN RUTHERFORD...SOUTHEASTERN MCDOWELL AND SOUTHERN
BURKE COUNTIES...INCLUDING THE FOLLOWING LOCATIONS...

THERMAL CITY...GLENWOOD AND DYSARTSVILLE...

SHOULD MONITOR THE WEATHER SITUATION CLOSELY. LISTEN FOR POSSIBLE
WARNINGS AND BE PREPARED TO TAKE APPROPRIATE ACTION SHOULD SEVERE
WEATHER THREATEN.

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

LAT...LON 3576 8169 3551 8169 3541 8210 3547 8213
      3552 8209 3552 8214 3553 8216 3557 8218

NED

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 2:14 PM EDT	Special Weather Statement	GSP	Burke	31 min
Jul 13, 2:31 PM EDT	Severe Thunderstorm Warning	GSP	Transylvania	59 min
Jul 13, 2:52 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Cleveland, Rutherford	38 min
Jul 13, 3:24 PM EDT	Severe Thunderstorm Warning	GSP	Catawba, Lincoln	66 min
Jul 13, 4:07 PM EDT	Special Weather Statement	GSP	Alexander	53 min
Jul 13, 4:13 PM EDT	Special Weather Statement	GSP	Cleveland	47 min
Jul 13, 4:22 PM EDT	Areal Flood Advisory	GSP	Lincoln	113 min
Jul 13, 4:25 PM EDT	Tornado Warning	GSP	Lincoln	39 min
Jul 13, 4:52 PM EDT	Tornado Warning	GSP	Iredell, Mecklenburg	38 min
Jul 13, 4:54 PM EDT	Severe Thunderstorm Warning	GSP	Davie, Iredell	66 min
Jul 13, 5:16 PM EDT	Severe Thunderstorm Warning	GSP	Cabarrus, Rowan	59 min
Jul 13, 5:19 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg, Union	56 min
Jul 13, 5:42 PM EDT	Areal Flood Advisory	GSP	Mecklenburg, Union	48 min
Jul 13, 5:42 PM EDT	Severe Thunderstorm Warning	GSP	Gaston, Mecklenburg	12 min
Jul 13, 5:49 PM EDT	Severe Thunderstorm Warning	GSP	Davie	26 min
Jul 13, 6:18 PM EDT	Special Weather Statement	GSP	Stanly	27 min
Jul 13, 6:42 PM EDT	Severe Thunderstorm Warning	GSP	Union	63 min
Jul 13, 4:27 PM EDT	Special Weather Statement	GSP	York	48 min
Jul 13, 5:04 PM EDT	Special Weather Statement	GSP	York	41 min
Jul 13, 5:26 PM EDT	Special Weather Statement	GSP	York	49 min
Jul 13, 5:45 PM EDT	Special Weather Statement	GSP	Chester	45 min
Jul 13, 6:02 PM EDT	Special Weather Statement	GSP	Abbeville, Anderson, Oconee, Pickens	58 min
Jul 13, 6:14 PM EDT	Severe Thunderstorm Warning	GSP	Chester, York	24 min
Jul 13, 7:13 PM EDT	Special Weather Statement	GSP	Abbeville	32 min
Jul 13, 7:47 PM EDT	Special Weather Statement	GSP	Abbeville, Anderson, Greenwood, Laurens	43 min
Jul 12, 8:34 PM EDT	Special Weather Statement	GSP	Franklin, Stephens	26 min
Jul 12, 9:02 PM EDT	Special Weather Statement	GSP	Hart	43 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010 Every severe thunderstorm warning in 2010

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.