Alert archive / South Carolina / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 179, NWS Greenville-Spartanburg, SC

July 4, 2003Abbeville County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 4, 2003, 4:42 PM EDT for Abbeville County, South Carolina. It was in force for 63 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
Jul 4, 2003, 4:42 PM EDT (20:42 UTC)
Expired
Jul 4, 2003, 5:45 PM EDT
In force
63 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Abbeville County, SC

The radar

The Greer radar (KGSP), 77 km from the middle of the area, began a volume at 20:45 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

Charleston AFB, SC (KCHS), launched 12:00Z, 8.7 hours before the alert went out and 271 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, Charleston AFB, SC at 12:00Z on 2003-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2173 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, Charleston AFB, SC at 12:00Z on 2003-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
2173 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
564 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
32 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 Jul 4, 1:43 PM EDT, 2 hours 59 minutes earlier.

Area forecast discussion, Jul 4, 1:43 PM EDT, 2 hours 59 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
143 PM EDT FRI JUL 4 2003

ATMOSPHERE SOMEWHAT UNSTABLE TODAY...BUT A WEAK LOW LEVEL AND SFC
RIDGE...PLUS A WEAK CAP...SHOULD HELP KEEP WIDESPREAD CONVECTION
THIS EVE DOWN SOMEWHAT. A WAVE IS STILL FCST TO DEVELOP OVER THE
GULF STATES LATE TONIGHT WITH INCREASED MOISTURE AND INSTABILITY...
SLOWLY MOVING ENE ACROSS THE DEEP S THROUGH THE WEEKEND. WILL CONT
TO CARRY CHANCE POPS THROUGH THE WEEKEND. MON AND TUE APPEAR
SLIGHTLY DRYER...THEN A FRONTAL BOUNDARY APPROACHES FROM THE NW WED
INTO THU. FRONT IS FCST TO PUSH THROUGH THU AND HAVE BUMPED POPS UP.
EXPECT SUBSIDENCE FRI BEHIND SYSTEM. TEMPS WILL REACH AROUND 90
ACROSS THE LOWER ELEVATIONS...MID 80S MTNS INTO THE MIDDLE OF
NEXT WEEK.

FCSTID = 77
GSP   70  88  70  85 /  20  40  40  40
AND   70  88  70  85 /  20  40  40  40
CLT   70  89  71  86 /  10  30  30  40
HKY   69  88  70  82 /  10  30  30  40
AVL   65  83  65  83 /  20  40  40  40

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

RB
Hazardous weather outlook, Jul 4, 6:10 AM EDT, 10 hours 32 minutes before
GAZ010-017-018-026-028-029-NCZ033>037-048>059-062>072-082-SCZ001>014-
019-041215-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
610 AM EDT FRI JUL 4 2003

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

.DAY ONE...TODAY

THERE IS A CHANCE OF THUNDERSTORMS OVER PORTIONS OF THE MOUNTAINS
THIS AFTERNOON AND EVENING. NO HAZARDOUS WEATHER IS EXPECTED AT THIS
TIME.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

NED

In the hours before

Special weather statement, Jul 4, 4:37 PM EDT, 5 minutes before
SCZ011-019-042130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
437 PM EDT FRI JUL 4 2003

...STRONG THUNDERSTORMS AFFECTING ABBEVILLE AND GREENWOOD
COUNTIES...

AT 420 PM...NATIONAL WEATHER SERVICE RADAR INDICATED NUMEROUS STRONG
THUNDERSTORMS ACROSS ABBEVILLE AND GREENWOOD COUNTIES...MAINLY ALONG
AND SOUTH OF HIGHWAY 72. THESE STORMS WILL CONTINUE TO DRIFT OR
DEVELOP SLOWLY NORTHWARD ACROSS THE COUNTIES THIS AFTERNOON. THE
STRONGER STORMS WILL LIKELY PRODUCE GUSTY WINDS OF 40 TO 50
MPH...TORRENTIAL RAINFALL IN EXCESS OF AN INCH PER HOUR...AND SMALL
HAIL. SOME OF THE STRONGER STORMS COULD BRIEFLY BECOME SEVERE...
PRODUCING HAIL TO THE SIZE OF PENNIES AND WIND GUSTS TO 60 MPH. IN
ADDITION...FREQUENT LIGHTNING WILL LIKELY ACCOMPANY

THESE STORMS WILL LIKELY REACH THE CITIES OF ABBEVILLE AND GREENWOOD
BY 5 PM. THE STORMS MAY ALSO AFFECT PORTIONS OF LAKE GREENWOOD
BETWEEN 5:00 AND 5:15 PM. BOATERS ON LAKE GREENWOOD SHOULD BE
PREPARED TO MOVE TO SHORE QUICKLY DURING THIS TIME.

THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THE PROGRESS OF
OF THESE STORMS FOR POSSIBLE SEVERE THUNDERSTORM WARNINGS IN THE
NEAR FUTURE.

LANE

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 6:43 PM EDTSevere Thunderstorm WarningGSPCaldwell47 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2003Every severe thunderstorm warning in 2003

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.