Severe Thunderstorm Warning 365, NWS Greenville-Spartanburg, SC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1029 PM EDT MON AUG 18 2003

WHAT A DIFFERENCE TWO HOURS CAN MAKE IN THE GREENVILLE SPARTANBURG
CWFA. A CLUSTER OF SLOW MOVING THUNDERSTORMS NOW DOMINATING THE
LANDSCAPE...WITH RAINFALL RATES OF GREATER THAN AN INCH PER HOUR
OVER PICKENS...GREENVILLE...WESTERN SPARTANBURG AND NORTHERN
ANDERSON COUNTIES. A NUMBER OF FACTORS CONTRIBUTING: LATENT
INSTABILITY FROM DAYTIME HEATING...COLDER AND DRIER AIR ALOFT MOVING
IN AHEAD OF A VORT DROPPING SOUTH OVER THE CENTRAL CAROLINAS AND
NUMEROUS OUTFLOW BOUNDARIES FROM UPSTREAM CONVECTION EARLIER. WILL
RAISE CENTRAL UPSTATE TO CATEGORICAL THROUGH LATE TONIGHT.
SURROUNDING THIS WILL BE LIKELY POPS TO THE SOUTH...HIGH CHANCE FOR
OCONEE AND THE FOOTHILLS OF NORTHEAST GEORGIA...WITH CHANCE POPS
REST OF THE NIGHT FOR NORTH CAROLINA FOOTHILLS AND PIEDMONT. KGSP
88-D SHOWS SCATTERED CONVECTION CONTINUING TO DEVELOP EAST OF THE
BLUE RIDGE ESCARPMENT. MEANWHILE...CONVECTION APPEARS DONE FOR THE
OVERNIGHT ACROSS THE HIGHER TERRAIN OF NORTH CAROLINA...MUCH REMOVED
FROM THE BETTER FORCING IN THE FOOTHILLS AND PIEDMONT...SO WILL
REMOVE POPS COMPLETELY FROM THE NORTH CAROLINA MOUNTAINS.

DEWPOINTS HAVE SURGED INTO THE MIDDLE 70S FOR MOST OF THE UPSTATE
AND SOUTHERN NORTH CAROLINA. AS SKIES CLEAR TONITE...WE MAY GET SOME
PATCHY DENSE FOG...ESPECIALLY IN THE CENTRAL UPSTATE COUNTIES
CURRENTLY EXPERIENCING THE HEAVIER RAIN. FOR NOW...WILL LIMIT PATCHY
DENSE FOG WORDING TO THOSE 4 COUNTIES. MIDNIGHT SHIFT WILL HAVE TO
MONITOR ALL OF THE FOOTHILLS AND PIEDMONT FOR POTENTIAL DENSE FOG
ADVISORY LATER TONIGHT.

FCSTID =   44
GSP   72  88  67  88 /  80  30  30  20
AND   73  89  68  89 /  60  20  20  20
CLT   71  88  68  89 /  30  20  20  20
HKY   68  87  66  86 /  30  30  30  20
AVL   63  84  63  84 /  10  30  30  20

.GSP...
GA...NONE.
NC...NONE.
SC...NONE.

BURRUS

GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-181115-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
528 AM EDT MON AUG 18 2003

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

.DAY ONE...TODAY

A COLD FRONT WILL SAG SLOWLY SOUTH THROUGH THE WESTERN CAROLINAS AND
NORTHEAST GEORGIA TODAY. ISOLATED TO WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THIS FEATURE DURING THE
AFTERNOON. A COUPLE OF THESE STORMS COULD BECOME SEVERE...WITH
DAMAGING WINDS AND LARGE HAIL BEING THE PRIMARY THREATS. LOCALIZED
HEAVY RAINFALL AND FLASH FLOODING WILL ALSO BE POSSIBLE.

.DAYS TWO THROUGH SEVEN...

ISOLATED TO WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL BE
POSSIBLE FROM TIME TO TIME OVER THE NEXT 7 DAYS...WITH THE BEST
CHANCES OCCURRING LATE IN THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

LANE

SCZ002-003-005>007-010-190215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
932 PM EDT MON AUG 18 2003

...THUNDERSTORMS WITH TORRENTIAL RAIN AFFECTING THE CITY OF
GREENVILLE...

A CLUSTER OF THUNDERSTORMS WITH VERY HEAVY RAIN WILL CONTINUE TO
DRIFT SLOWLY TO THE SOUTH ACROSS THE GREENVILLE METRO AREA THROUGH
1015 PM. AREAS FROM GREER TO GREENVILLE AND EASLEY WILL
SEE IN EXCESS OF AN INCH OF RAIN WITH THESE STORMS...WITH A FEW SPOTS
PICKING UP AS MUCH AS TWO INCHES IN AN HOURS TIME. GUSTY WINDS AND
OCCASIONAL CLOUD TO GROUND LIGHTNING WILL ALSO OCCUR. PONDING OF
WATER IN POOR DRAINAGE AREAS AND IN LOW SPOTS WILL DEVELOP. IF THE
HEAVY RAIN PERSISTS OVER DOWNTOWN GREENVILLE...URBAN FLOODING WILL
BEGIN TO DEVELOP.

MCAVOY

SCZ001-002-004-005-010-190400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1105 PM EDT MON AUG 18 2003

...THUNDERSTORMS WITH TORRENTIAL RAIN MOVING INTO THE WESTERN
PART OF THE UPSTATE...

AT 1100 PM EDT...WEATHER SERVICE RADAR INDICATED A LINE OF
THUNDERSTORMS EXTENDING FROM NEAR SIX MILE IN PICKENS COUNTY TO
NEAR WILLIAMSTON IN ANDERSON COUNTY. THE STORMS WERE MOVING TO
THE SOUTHWEST AT AROUND 20 MPH. THROUGH MIDNIGHT...THE STORMS
WILL AFFECT AREAS FROM LAKE KEOWEE TO PENDLETON AND ANDERSON...WITH
THE STRONGEST PART OF THE LINE AFFECTING SANDY SPRINGS. THE STRONGER
STORMS IN THE LINE WILL PRODUCE FREQUENT CLOUD TO GROUND LIGHTNING...
40 MPH WINDS AND RAINFALL AMOUNTS OF 1 TO 2 INCHES IN AN HOUR.

MCAVOY