Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 428, NWS Greenville-Spartanburg, SC

September 27, 2010Anderson County, South Carolina; Hart County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Sep 27, 2010, 8:30 PM EDT for Anderson County, South Carolina; Hart County, Georgia. It was in force for 32 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: Sep 27, 2010, 8:30 PM EDT (00:30 UTC)
Expired: Sep 27, 2010, 9:02 PM EDT
In force: 32 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Hart County, GA, Anderson County, SC

The radar

The Greer radar (KGSP), 73 km from the middle of the area, began a volume at 00:32 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

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.5 hours before the alert went out and 196 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: 200 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

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 Sep 27, 7:45 PM EDT, 45 minutes earlier.

Area forecast discussion, Sep 27, 7:45 PM EDT, 45 minutes before

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Hazardous weather outlook, Sep 27, 4:10 PM EDT, 4 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
410 PM EDT MON SEP 27 2010

GAZ010-017-018-026-028-029-NCZ033-035-048>053-056-058-059-062>065-
068>070-501>510-SCZ001>014-019-282015-
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-
410 PM EDT MON SEP 27 2010

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

.DAY ONE...TONIGHT.

ISOLATED THUNDERSTORMS WITH GUSTY WIND AND SMALL HAIL ARE POSSIBLE
THROUGH EARLY TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

NCZ036-037-057-071-072-082-282015-
IREDELL-DAVIE-ROWAN-MECKLENBURG-CABARRUS-UNION NC-
410 PM EDT MON SEP 27 2010

...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA.

.DAY ONE...TONIGHT.

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

   FLOOD WATCH.

ISOLATED THUNDERSTORMS WITH GUSTY WIND AND SMALL HAIL ARE POSSIBLE
THROUGH TEARLY TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

NONE.

LGL

In the hours before

Special weather statement, Sep 27, 4:45 PM EDT, 3 hours 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
445 PM EDT MON SEP 27 2010

NCZ058-272115-
GRAHAM-
445 PM EDT MON SEP 27 2010

...A STRONG THUNDERSTORM WILL AFFECT GRAHAM COUNTY THROUGH 515 PM
EDT...

AT 442 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES SOUTH OF SANTEETLAH LAKE...OR 3 MILES
WEST OF ROBBINSVILLE...MOVING NORTHEAST AT 25 MPH.

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

LAT...LON 3545 8387 3545 8376 3542 8366 3544 8363
      3543 8359 3540 8358 3524 8378 3524 8385
      3523 8388 3532 8400

KRENTZ

Local storm report, Sep 27, 5:16 PM EDT, 3 hours 14 minutes before

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Special weather statement, Sep 27, 6:03 PM EDT, 2 hours 27 minutes before

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Special weather statement, Sep 27, 6:07 PM EDT, 2 hours 23 minutes before

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Special weather statement, Sep 27, 6:49 PM EDT, 1 hour 41 minutes before

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Special weather statement, Sep 27, 7:09 PM EDT, 1 hour 21 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 27, 9:38 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Polk	26 min
Sep 27, 10:38 PM EDT	Special Weather Statement	GSP	Cleveland, McDowell	52 min
Sep 27, 11:24 PM EDT	Special Weather Statement	GSP	Alexander, Burke, Caldwell, Catawba, Gaston, Lincoln	51 min
Sep 28, 12:09 AM EDT	Special Weather Statement	GSP	Caldwell	51 min
Sep 27, 8:22 PM EDT	Special Weather Statement	GSP	Anderson, Pickens	38 min
Sep 27, 8:50 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville, Anderson, Greenwood	27 min
Sep 27, 9:00 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Pickens	45 min
Sep 27, 9:08 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Greenville	33 min
Sep 27, 9:24 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Laurens	33 min
Sep 27, 9:29 PM EDT	Severe Thunderstorm Warning	GSP	Greenville, Laurens, Spartanburg	32 min
Sep 27, 9:54 PM EDT	Special Weather Statement	GSP	Spartanburg	51 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010 Severe Thunderstorm Warnings in Georgia, 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.