Alert archive / South Carolina / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 332, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 1, 2007, 5:48 PM EDT for Spartanburg County, South Carolina. It was in force for 42 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 1, 2007, 5:48 PM EDT (21:48 UTC)
- Expired
- Aug 1, 2007, 6:30 PM EDT
- In force
- 42 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Spartanburg County, SC
The radar
The Greer radar (KGSP), 22 km from the middle of the area, began a volume at 21:51 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 12:00Z, 9.8 hours before the alert went out and 228 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.
- Mixed-layer CAPE
- 668 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1120 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 1, 2:29 PM EDT, 3 hours 19 minutes earlier.
Area forecast discussion, Aug 1, 2:29 PM EDT, 3 hours 19 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
229 PM EDT WED AUG 1 2007
.SYNOPSIS...
AN UPPER LEVEL TROUGH WILL CONTINUE TO WEAKEN OVER THE REGION...
GIVING WAY TO A WEAK UPPER RIDGE BY THE WEEKEND. A RIDGE OF SURFACE
HIGH PRESSURE WILL REMAIN OVER THE AREA BEFORE MOVING OFF THE EAST
COAST EARLY NEXT WEEK.
&&
.NEAR TERM /THROUGH THURSDAY/...
MID LEVEL WARM CAP AND MIXING OUT OF LOW LEVEL DEW POINTS THAT WAS
ADVERTISED ON EARLIER MODEL RUNS DID NOT OCCUR TO THE EXTENT
EXPECTED. LAPS CAPES UP IN THE 1000-2000 J/KG RANGE WITH HIGHER
VALUES OVER W MTNS. COMBINED WITH WEAK UPPER FORCING EXPECT ISOLD
SHWRS/TSTMS TO CONTINUE DEVELOPING AND MOVING SLOWLY SW...MAINLY
OVER MTNS...UNTIL MID-LATE EVE. SKIES SHOULD CLEAR LATE TONIGHT WITH
AREAS OF FOG DEVELOPING IN MTN VALLEYS. MORNING LOWS WILL RANGE FROM
AROUND 70 PIEDMONT TO UPPER 50S AND LOW 60S MTNS.
THU...AN UPPER SHORTWAVE APPROACHES THE GREAT LAKES WHICH SUPRESSES
THE RIDGE OVER THE SE STATES. THIS SHOULD HAVE LITTLE EFFECT ON
WEATHER OVER CWA HOWEVER. WENT WITH SIGHT CHANCE AFTN-EVE POPS OVER
MTNS AGAIN WITH HIGH TEMPS REACHING INTO THE 90S FOOTHILLS/PIEDMONT
UPPER 70S AND 80S MTNS.
&&
.SHORT TERM /THURSDAY NIGHT THROUGH SATURDAY/...
FORECAST AREA DURING THE SHORT TERM WILL REMAIN ON THE EASTERN
PERIPHERY OF BROAD UPPER HIGH THAT COVERS THE CENTRAL PORTION OF THE
COUNTRY. PRESSURE PATTERN REMAINS VERY WEAK IN THE LOWER
LEVELS...BUT AREA WILL BE DOMINATED BY WEAK HIGH PRESSURE. 12Z
NAM/GFS SUGGEST THAT A WEAK BACKDOOR FRONT WILL MAKE A RUN AT THE
AREA ON SAT. HOWEVER....EXPECT IT TO COME UP SHORT. THEREFORE...IT
WILL BE GENERALLY VERY WARM AND GENERALLY DRY THROUGH SAT. THE
EXCEPTION WILL BE OVER THE MOUNTAINS WHERE ISOLATED TO WIDELY
SCATTERED CONVECTION IS POSSIBLE EACH DAY DUE TO DIFFERENTIAL
HEATING AND WEAKLY DIFFLUENT FLOW ALOFT. HAVE TRENDED MAXIMUM
TEMPERATURES FRI AND SAT TOWARD WARMER GUIDANCE NUMBERS.
&&
.LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/...
BROAD UPPER HIGH TO THE WEST IS FORECAST TO GRADUALLY BUILD EAST
DURING THE EXTENDED PERIOD ALLOWING THE SUBTROPICAL BERMUDA HIGH TO
BECOME FIRMLY ESTABLISHED IN THE LOWER LEVELS BY MONDAY. HPC PROGS
INDICATE THAT FRONTAL BOUNDARIES ARE EXPECTED TO REMAIN WELL NORTH
OF THE REGION. THEREFORE...EXPECT LITTLE CHANGE IN THE SENSIBLE
WEATHER SUN THROUGH WED. THE PERIOD WILL BE CHARACTERIZED BY VERY
WARM DAYS AVERAGING A COUPLE DEGREES ABOVE SEASONAL AVERAGES. WIDELY
SCATTERED AFTERNOON AND EVENING CONVECTION WILL BE POSSIBLE EACH
DAY WITH THE BEST COVERAGE OVER THE MOUNTAINS.
&&
.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
EXPECT ISOLD SHWRS/TSTMS...MAINLY OVER MTNS INTO MID EVE AND HAVE
VCSH AND CB CLOUD TYPE IN KAVL TAF. MAY NEED TO AMEND REST OF TAFS
TO ADD SAME. LOOK FOR MCLR SKIES OVERNIGHT...THEN IFR FOG/STRATUS
LIKELY AGAIN EARLY MORNING AT KAVL...MVFR AT KCLT AND KHKY AND
ANYWHERE THAT PICKS UP RAIN. LOOK FOR SCT CU TO DEVELOP TOWARD NOON
THU. LIGHT E WINDS WILL TAPER OFF OVERNIGHT.
AVIATION OUTLOOK...PREDOMINANT VFR CONDITIONS INTO EARLY NEXT WEEK
AS WEAK HIGH PRESSURE REMAINS OVER THE REGION. MVFR FOG POSSIBLE
EACH MORNING WITH SLIGHT CHANCE LATE DAY CONVECTION OVER MTNS EACH
AFTN-EVE.
&&
.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.
&&
SYNOPSIS...RB
NEAR TERM...RB
SHORT TERM...LG
LONG TERM...LG
AVIATION...RBHazardous weather outlook, Aug 1, 5:05 AM EDT, 12 hours 43 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 505 AM EDT WED AUG 1 2007 GAZ010-017-NCZ033-048>053-058-059-062>065-501>510-SCZ001>003-020915- RABUN-HABERSHAM-AVERY-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE- GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA- HENDERSON-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- 505 AM EDT WED AUG 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT ISOLATED SHOWERS AND THUNDERSTORMS WILL DEVELOP ACROSS THE MOUNTAINS AND FOOTHILLS THIS AFTERNOON. FREQUENT CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WILL BE THE MAIN THREAT WITH STRONGER THUNDERSTORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED MOST AFTERNOONS AND EVENINGS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. GAZ018-026-028-029-NCZ035>037-056-057-068>072-082-SCZ004>014-019- 020915- STEPHENS-FRANKLIN-HART-ELBERT-ALEXANDER-IREDELL-DAVIE-CATAWBA-ROWAN- CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC- GREATER OCONEE-GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG- CHEROKEE-YORK-ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD- 505 AM EDT WED AUG 1 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY ISOLATED TO WIDELY SCATTERED THUNDERSTORMS ARE EXPECTED MOST AFTERNOONS AND EVENINGS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. LANE
In the hours before
Special weather statement, Aug 1, 5:04 PM EDT, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 504 PM EDT WED AUG 1 2007 NCZ062-012130- MACON- 504 PM EDT WED AUG 1 2007 ...A STRONG THUNDERSTORM WILL AFFECT FAR WESTERN MACON COUNTY THROUGH 530 PM EDT... AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR NANTAHALA LAKE...OR 8 MILES EAST OF ANDREWS...MOVING WEST AT 5 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO NANTAHALA LAKE AND KYLE. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
Special weather statement, Aug 1, 5:29 PM EDT, 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 529 PM EDT WED AUG 1 2007 NCZ506-012200- EASTERN MCDOWELL- 529 PM EDT WED AUG 1 2007 ...A STRONG THUNDERSTORM WILL AFFECT EASTERN MCDOWELL COUNTY THROUGH 600 PM EDT... AT 526 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES NORTH OF DYSARTSVILLE...OR 7 MILES EAST OF MARION...MOVING WEST AT 10 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO NEBO... MARION AND GLENWOOD. SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
Special weather statement, Aug 1, 5:43 PM EDT, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC 543 PM EDT WED AUG 1 2007 SCZ007-012215- SPARTANBURG- 543 PM EDT WED AUG 1 2007 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SPARTANBURG COUNTY THROUGH 615 PM EDT... AT 539 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES NORTHEAST OF LAKE BOWEN...OR 14 MILES NORTH OF SPARTANBURG...MOVING SOUTH AT 5 MPH. * OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO LAKE BOWEN...MAYO...FINGERVILLE...COWPENS...CHESNEE AND BOILING SPRINGS SC. SMALL HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS STORM. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES. MOVE INDOORS IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES.
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:22 PM EDT | Air Stagnation Advisory | GSP | Alexander, Burke, Cabarrus, Caldwell, Catawba, Gaston and 5 more | 30 hr |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2007Every severe thunderstorm warning in 2007
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.