Alert archive / South Carolina / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 258, NWS Greenville-Spartanburg, SC

June 29, 2007Chester County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 29, 2007, 7:54 PM EDT for Chester County, South Carolina. It was in force for 51 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
Jun 29, 2007, 7:54 PM EDT (23:54 UTC)
Expired
Jun 29, 2007, 8:45 PM EDT
In force
51 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Chester County, SC

The radar

The Columbia radar (KCAE), 83 km from the middle of the area, began a volume at 23:57 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 11.9 hours before the alert went out and 192 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 2007-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 377 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 2007-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 square meters per square second.1939Sfc1 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
377 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
1018 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
58 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 29, 7:11 PM EDT, 43 minutes earlier.

Area forecast discussion, Jun 29, 7:11 PM EDT, 43 minutes before
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Hazardous weather outlook, Jun 29, 1:51 PM EDT, 6 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
151 PM EDT FRI JUN 29 2007

GAZ010-017-018-026-028-029-NCZ033-035-048>053-056-058-059-062>065-
068>070-501>510-SCZ001>014-019-301800-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CLEVELAND-LINCOLN-GASTON-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-
151 PM EDT FRI JUN 29 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A COLD FRONT WILL PUSH SOUTH TOWARD THE REGION THIS AFTERNOON AND
EVENING. THE ATMOSPHERE AHEAD OF THE FRONT WILL LIKELY SUPPORT
SEVERAL SEVERE THUNDERSTORMS...CAPABLE OF PRODUCING DAMAGING WINDS
IN EXCESS OF 60 MPH...LARGE HAIL...AND VERY HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ON SATURDAY...A COLD FRONT WILL SLOWLY CROSS THE AREA FROM THE NORTH
AND ONCE AGAIN BRING THE POSSIBILITY OF STRONG TO SEVERE
THUNDERSTORM DEVELOPMENT. DAMAGING WINDS...LARGE HAIL AND HEAVY
RAINFALL WILL BE POSSIBLE AS THE AFTERNOON PROGRESSES. SOME OF
THESE STORMS COULD BECOME FAIRLY STATIONARY AND CONTINUE BUILDING
ACROSS THE SAME AREAS JUST EAST OF THE MOUNTAINS LEADING TO AN
INCREASED RISK FOR FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

NCZ036-037-057-071-072-082-301800-
IREDELL-DAVIE-ROWAN-MECKLENBURG-CABARRUS-UNION NC-
151 PM EDT FRI JUN 29 2007

...SEVERE THUNDERSTORM WATCH 463 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT 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.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

ON SATURDAY...A COLD FRONT WILL SLOWLY CROSS THE AREA FROM THE NORTH
AND ONCE AGAIN BRING THE POSSIBILITY OF STRONG TO SEVERE
THUNDERSTORM DEVELOPMENT. DAMAGING WINDS...LARGE HAIL AND HEAVY
RAINFALL WILL BE POSSIBLE AS THE AFTERNOON PROGRESSES. SOME OF
THESE STORMS COULD BECOME FAIRLY STATIONARY AND CONTINUE BUILDING
ACROSS THE SAME AREAS JUST EAST OF THE MOUNTAINS LEADING TO AN
INCREASED RISK FOR FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED.

NED

In the hours before

Special weather statement, Jun 29, 5:45 PM EDT, 2 hours 9 minutes before
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Special weather statement, Jun 29, 5:57 PM EDT, 1 hour 57 minutes before
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Special weather statement, Jun 29, 6:08 PM EDT, 1 hour 46 minutes before
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Special weather statement, Jun 29, 6:16 PM EDT, 1 hour 38 minutes before
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Local storm report, Jun 29, 6:50 PM EDT, 1 hour 4 minutes before
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Special weather statement, Jun 29, 7:11 PM EDT, 43 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:47 PM EDTFlash Flood WarningGSPAlexander3 hr
Jun 29, 2:13 PM EDTSevere Thunderstorm WarningGSPIredell62 min
Jun 29, 2:45 PM EDTSevere Thunderstorm WarningGSPMcDowell60 min
Jun 29, 2:48 PM EDTSevere Thunderstorm WarningGSPIredell33 min
Jun 29, 2:54 PM EDTSevere Thunderstorm WarningGSPTransylvania66 min
Jun 29, 3:19 PM EDTSevere Thunderstorm WarningGSPBurke, Cleveland56 min
Jun 29, 3:28 PM EDTSevere Thunderstorm WarningGSPCatawba52 min
Jun 29, 3:58 PM EDTSevere Thunderstorm WarningGSPOconee62 min
Jun 29, 5:48 PM EDTSevere Thunderstorm WarningGSPChester57 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2007Every severe thunderstorm warning in 2007

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.