Alert archive / Georgia / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 187, NWS Greenville-Spartanburg, SC

August 4, 2005Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 4, 2005, 2:53 PM EDT for Rabun County, Georgia. It was in force for 60 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: Aug 4, 2005, 2:53 PM EDT (18:53 UTC)
Expired: Aug 4, 2005, 3:53 PM EDT
In force: 60 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Rabun County, GA

The radar

The Greer radar (KGSP), 108 km from the middle of the area, began a volume at 18:54 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 12:00Z, 6.9 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: 934 J/kg
Mixed-layer CIN: -35 J/kg
Mixed-layer LCL: 1077 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 40 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 Aug 4, 2:19 PM EDT, 34 minutes earlier.

Area forecast discussion, Aug 4, 2:19 PM EDT, 34 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
219 PM EDT THU AUG 4 2005

.SHORT TERM (TONIGHT THROUGH FRIDAY)...
BROAD UPPER RIDGE REMAINS OVER AREA...WHILE SFC HIGH PRESSURE
MEANDERS JUST TO THE N. ATMOSPHERE QUITE UNSTABLE AND WITH SFC
HEATING COMBINED WITH WEAK UPPER FORCING...ISOLD SHOWERS AND
THUNDERSTORMS ARE DEVELOPING ALONG MTNS AND FOOTHILLS. EXPECT SCT
COVERAGE MTNS AND NC FOOTHILLS...ISOLD ELSEWHERE INTO THIS EVE.
LIGHT WINDS WILL CONTINUE OVERNIGHT. A COLD FRONT APPROACHES FROM
THE NW FRI WITH A SFC TROF DEVELOPING AHEAD OF IT...RIGHT ACROSS THE
CWA. THIS WILL LIKELY PROVIDE A FOCUS FOR DEEPER CONVECTION FOR THE
AFTN AND HAVE INCREASED POPS AFTN-EVE. TEMPS WILL TOP OUT LATE THIS
AFTN...THEN LOWERING THICKNESS VALUES... MORE CLOUDS AND BETTER
COVERAGE OF SHWRS AND TSTMS SHOULD LIMIT HEATING BY A COUPLE DEGREES
FRI.

&&

.LONG TERM (SATURDAY NIGHT THROUGH THURSDAY)...
BY SAT AFTERNOON...WEAK FRONTAL BOUNDARY APPROACHES THE AREA FROM
THE NORTH...BUT IS EXPECTED TO STALL IN OR NEAR THE AREA...AS UPPER
RIDGE RETROGRADES ACROSS THE SOUTHEAST. THE NAM AND GFS ARE AT ODDS
WITH THE STRENGTH OF THE RIDGE OVER THE SOUTHEAST...WITH THE NAM
BUILDING A RATHER SHARP SHORT WAVE RIDGE (COINCIDENT WITH LARGE AREA
OF LOW LAYER RH) OVER THE CAROLINAS ON SAT...NORTH OF A DEVELOPING
DEEP BUT WEAK CYCLONIC CIRCULATION. MEANWHILE...THE GFS...WHICH ALSO
DEVELOPS THIS CIRCULATION...IS NOT AS SHARP WITH THE RIDGE...AND
ACTUALLY SPREADS TROPICAL MOISTURE OVER THE AREA BY AFTERNOON. FOR
NOW...WILL COMPROMISE BETWEEN THESE SOLUTIONS AND FEATURE TYPICAL
EARLY AUGUST CONDITIONS...WITH SCATTERED DIURNAL CONVECTION SAT AND
SUN.

DIURNAL CONVECTIVE CHANCES WILL CONTINUE THROUGH MUCH OF THE NEXT 7
DAYS...ALTHOUGH COVERAGE COULD IMPROVE BY MID-WEEK...AS THE GFS
DEPICTS THE RIDGE BREAKING DOWN A BIT...IN RESPONSE TO A SERIES OF
SW TROUGHS MOVING ACROSS THE MIDWEST. BY LATE IN THE PERIOD...WILL
TAPER POPS DOWN TO SLIGHT CHANCE...AS DEEP LAYER DRYING COMMENCES IN
THE WAKE OF A WEAK SW TROUGH.

&&

.AVIATION...
MTNS AND NC PIEDMONT CONTINUE TO HAVE THE BEST CHANCE FOR CONVECTION
SO HAVE INCLUDED CB CLOUD TYPE AT KAVL AND KHKY INTO THIS EVE.
EXPECT TEMPO EARLY AM IFR FOG AT KAVL...WITH WIDESPREAD MVFR
ELSEWHERE TIL 14Z. BY EARLY AFTN FRI A SFC TROF DEVELOPS ACROSS THE
PIEDMONT...OUT AHEAD OF A FRONTAL BOUNDARY WHICH WILL APPROACH FROM
THE NW. HAVE ADDED CB CLOUDS ALL TAF SITES BY NOON AND VCTS AT KAVL.

&&

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

SHORT TERM...RB
LONG TERM...LANE
AVIATION...RB

Hazardous weather outlook, Aug 4, 5:36 AM EDT, 9 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
536 AM EDT THU AUG 4 2005

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-
SCZ001>014-019-050945-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-CALDWELL-
ALEXANDER-IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-
BUNCOMBE-MCDOWELL-BURKE-CATAWBA-ROWAN-GRAHAM-NORTHERN JACKSON-
MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-POLK-RUTHERFORD-
CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
OCONEE MOUNTAINS-PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-
GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-
CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-
GREENWOOD-
536 AM EDT THU AUG 4 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR UPSTATE SOUTH CAROLINA...
MUCH OF WESTERN NORTH CAROLINA... AND EXTREME NORTHEAST GEORGIA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED IN THE NORTH CAROLINA
MOUNTAINS THIS AFTERNOON AND EVENING...WITH ISOLATED THUNDERSTORMS
OVER THE REST OF THE AREA.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SCATTERED THUNDERSTORMS ARE EXPECTED FRIDAY THROUGH WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION NOT ANTICIPATED AT THIS TIME.

07

In the hours before

Local storm report, Aug 4, 9:38 AM EDT, 5 hours 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
938 AM EDT THU AUG 04 2005

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

0410 PM     TSTM WND DMG     2 S ELK PARK            36.13N 81.98W
08/03/2005                   AVERY              NC   DEPT OF HIGHWAYS

            SEVERAL TREES DOWN ON PROPERTY

&&

CED

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 4:47 PM EDT	Severe Thunderstorm Warning	GSP	Transylvania	58 min
Aug 4, 5:22 PM EDT	Severe Thunderstorm Warning	GSP	Avery	36 min
Aug 4, 6:25 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe	52 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2005 Every severe thunderstorm warning in 2005

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.