Alert archive / North Carolina / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 498, NWS Greenville-Spartanburg, SC

August 4, 2006Union County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 4, 2006, 8:49 PM EDT for Union County, North Carolina. It was in force for 56 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, 2006, 8:49 PM EDT (00:49 UTC)
Expired: Aug 4, 2006, 9:45 PM EDT
In force: 56 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Union County, NC

The radar

The Columbia radar (KCAE), 128 km from the middle of the area, began a volume at 00:52 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 00:00Z, 0.8 hours before the alert went out and 134 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: 2274 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 56 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, 6:59 PM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 4, 6:59 PM EDT, 1 hour 50 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
659 PM EDT FRI AUG 4 2006

.SHORT TERM /REST OF TONIGHT/...
UPDATE WILL REMOVE HEAT ADVISORY HEADLINES FROM ZONE FORECASTS.
CONVECTION IS SHIFTING EASTWARD INTO THE PIEDMONT THIS EVENING AS
BOUNDARY MAKES SLOW PROGRESS SOUTHEAST. WILL PUSH HIGHER LATE
EVENING RAIN CHANCES INTO THE FOOTHILLS AND PIEDMONT.

&&

.PREV DISCUSSION...
 /ISSUED 223 PM EDT FRI AUG 4 2006/

SHORT TERM /TONIGHT THROUGH MONDAY/...
LINES OF SHRA AND TSRA HAVE DEVELOPED ALONG AND AHEAD OF AN
APPROACHING COLD FRONT OVER KY AND TN. THIS ACTIVITY SHOULD REACH
THE NC/TN LINE BY 21Z. I EXPECTED THE CONVECTION WILL BREAK APART
OVER THE CENTRAL MTNS...BUT SCT ACTIVITY SHOULD SURVIVE TO THE
FOOTHILLS EARLY THIS EVENING. A SECONDARY SECTION OF SHRA AND TSRA
HAS STARTED TO SPREAD ACROSS THE MIDLANDS OF SC. THE MIDLAND
ACTIVITY MAY SPREAD INTO THE EASTERN PORTION OF THE CWA BETWEEN 21Z
AND 0Z THIS EVENING. FORECAST SOUNDINGS INDICATE ENOUGH DRY AIR IN
THE MID LEVELS TO SUPPORT A FEW SVR WIND EVENTS. LARGE HAIL IN NOT
FAVORED DUE TO MARGINAL CAPE AND HIGH FRZ LEVELS.

INSTABILITY WILL QUICKLY POOL ACROSS THE CWA SAT AFTERNOON. THE
INSTABILITY COMBINED WITH WEAK ISENTROPIC LIFT AND A H5 VORT WILL
RESULT IN EVEN COVERAGE SAT AFTERNOON AND EVENING. I WILL ADVERTISE
COVERAGE SIMILAR TO THE HIGH CHC COVERAGE INDICATED BY MOS.

A FLAT UPPER RIDGE REMAINS OVER THE SOUTHEAST THROUGH SUNDAY...THEN
RETROGRADES TOWARD THE LOWER MISSISSIPPI RIVER VALLEY ON MONDAY AS
AN UPPER TROUGH SETS UP ALONG THE EAST COAST. MOISTURE ASSOCIATED
WITH A STALLED SURFACE FRONT PERSISTS OVER OUR AREA SUNDAY AND
MONDAY...WHILE ANOTHER FRONT DROPS SOUTH TOWARD OUR AREA LATE
MONDAY. MODEL TIME HEIGHT PLOTS SHOW DEEP OMEGA REMAINING INTO
SATURDAY NIGHT...BUT WITH LITTLE FORCING ALOFT...POPS WILL BE KEPT
IN THE HIGH CHANCE RANGE. WITH THE BOUNDARY REMAINING IN THE
AREA...CHANCE POPS WILL BE MAINTAINED AROUND THE CLOCK...WITH
RELATIVE LULLS AT NIGHT. TEMPERATURES WILL MODERATE TO NEAR NORMAL
VALUES AS HEIGHTS FALL AND CLOUD COVER REMAIN RELATIVELY HIGH NEAR
THE FRONT.

LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
THE MEDIUM RANGE MODELS ADVERTISE SOME DEGREE OF EAST COAST
TROUGHING AT THE UPPER LEVELS. A COLD FRONT WILL APPROACH FROM THE
NORTH ON TUESDAY... PRECEDED BY WARMER THAN NORMAL TEMPERATURES.
THIS FRONT WILL STALL ACROSS OUR AREA BY WEDNESDAY...ACTING AS
A FOCUSING MECHANISM FOR PRECIPITATION THROUGH THURSDAY...WITH
TEMPERATURES CLOSER TO NORMAL VALUES. BY FRIDAY THE FRONT
DISSIPATES...WITH A RETURN TO WARMER THAN NORMAL TEMPERATURES.

AVIATION...
ONCE AGAIN...CONVECTION WILL BE THE MAIN AVIATION CONCERN FOR THE
FIRST 12 HRS. COVERAGE SHOULD REMAIN THE HIGHEST OVER THE MTNS THIS
AFTERNOON WITH A SECONDARY MAX OVER THE EASTERN PIEDMONT THIS
EVENING. MTN SHRA AND TSRA SHOULD BEGIN TO ERODE BY 23Z AS INITIAL
BAND OF CONVECTION MOVES EAST. CONVECTION OVER THE PIEDMONT MAY
LINGER UNTIL 6Z. BASED ON THIS MORNING/S OBS...I INCLUDED A MENTION
OF FOG AT KAND AND KAVL. AFTER 13Z...TERMINALS SHOULD BECOME VFR.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...HEAT ADVISORY FOR GAZ026-028-029 UNTIL 7 PM FRIDAY.
NC...HEAT ADVISORY FOR NCZ071-082 UNTIL 7 PM FRIDAY.
SC...HEAT ADVISORY FOR SCZ006>014-019 UNTIL 7 PM FRIDAY.
&&

SHORT TERM...HG

Hazardous weather outlook, Aug 4, 6:00 AM EDT, 14 hours 49 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
600 AM EDT FRI AUG 4 2006

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-051000-
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-
600 AM EDT FRI AUG 4 2006

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER THE AREA
ONCE AGAIN TODAY. A FEW OF THE STORMS COULD PRODUCE SEVERE WEATHER
IN THE FORM OF DAMAGING WIND GUSTS. PLEASE SEE THE SEVERE WEATHER
OUTLOOK...CAESPSGSP FOR DETAILS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SCATTERED...MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS
ARE EXPECTED ACROSS THE AREA FOR MOST OF THE NEXT SEVEN DAYS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND EVENING.

LANE

In the hours before

Local storm report, Aug 4, 7:51 PM EDT, 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
751 PM EDT FRI AUG 04 2006

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

0745 PM     TSTM WND DMG     6 NE WALHALLA           34.83N 82.99W
08/04/2006                   OCONEE             SC   PUBLIC

            A COUPLE OF TREES DOWN NEAR RESIDENCE AT KEOWEE
            KEY...NEAR HWY 183.

&&

GMS

Local storm report, Aug 4, 8:11 PM EDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
811 PM EDT FRI AUG 04 2006

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

0555 PM     HAIL             2 NE CRUSO              35.44N 82.79W
08/04/2006  E0.75 INCH       HAYWOOD            NC   TRAINED SPOTTER

            SPOTTER REPORTS DIME SIZE HAIL.

&&

HG

Local storm report, Aug 4, 8:15 PM EDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
815 PM EDT FRI AUG 04 2006

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

0810 PM     TSTM WND DMG     TOCCOA                  34.58N 83.32W
08/04/2006                   STEPHENS           GA   EMERGENCY MNGR

            TWO TREES DOWN IN TOCCOA...AND ONE IN RIDGEVIEW HEIGHTS.

&&

44

Local storm report, Aug 4, 8:31 PM EDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
831 PM EDT FRI AUG 04 2006

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

0823 PM     HAIL             TOCCOA                  34.58N 83.32W
08/04/2006  M0.75 INCH       STEPHENS           GA   EMERGENCY MNGR

            PENNY-SIZED HAIL IN TOCCOA.

&&

44

Local storm report, Aug 4, 8:42 PM EDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
842 PM EDT FRI AUG 04 2006

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

0815 PM     TSTM WND DMG     1 W ENOCHVILLE          35.52N 80.68W
08/04/2006                   ROWAN              NC   TRAINED SPOTTER

            UTILITY LINES DOWN ON WRIGHT RD. PERSON STRUCK BY
            LIGHTNING ON CANNON FARM RD.

&&

GMS

Local storm report, Aug 4, 8:47 PM EDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
847 PM EDT FRI AUG 04 2006

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

0815 PM     TSTM WND DMG     TOCCOA                  34.58N 83.32W
08/04/2006                   STEPHENS           GA   TRAINED SPOTTER

            NUMEROUS TREES DOWN IN TOCCOA. TREE FELL ON HOUSE ON
            POPLAR ST. LOCALIZED ROAD FLOODING ON HWY 123...CURAHEE
            ST.

&&

GMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 8:49 PM EDT	Flash Flood Warning	GSP	Rowan	116 min
Aug 4, 10:18 PM EDT	Severe Thunderstorm Warning	GSP	Union	27 min
Aug 5, 7:45 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg	60 min
Aug 4, 11:18 PM EDT	Severe Thunderstorm Warning	GSP	York	57 min
Aug 5, 5:15 PM EDT	Severe Thunderstorm Warning	GSP	Laurens	75 min
Aug 5, 6:26 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	64 min
Aug 4, 8:12 PM EDT	Severe Thunderstorm Warning	GSP	Stephens	63 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2006 Every severe thunderstorm warning in 2006

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.