Alert archive / Georgia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 340, NWS Greenville-Spartanburg, SC

August 5, 2007Hart County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 5, 2007, 3:17 PM EDT for Hart County, Georgia. It was in force for 58 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Aug 5, 2007, 3:17 PM EDT (19:17 UTC)
Expired
Aug 5, 2007, 4:15 PM EDT
In force
58 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Counties, with a storm outline in the text

County Hart County, GA

The radar

The Greer radar (KGSP), 88 km from the middle of the area, began a volume at 19:18 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.

What was reported inside it

TimeReportWhereRemark
Aug 5, 3:40 PM EDTTSTM WND DMG7 Nne Hartwell, GAA RESIDENT IN THE REED CREEK COMMUNITY NEAR THE INTERSECTION OF BOLEMAN HILL ROAD AND HIGHWAY 51 REPORTED MANY PECAN TREE LIMBS DOWN. SEVERAL OF THESE LIMBS ARE GREATER THAN 2 INCHES IN DIAMETER. THE WIND BLEW OVER A FEW BUSHES BUT NOT UPROOTING THEM.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 23 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.3 hours before the alert went out and 181 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, Peachtre/Fal Fld, GA at 12:00Z on 2007-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 120 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, Peachtre/Fal Fld, GA at 12:00Z on 2007-08-05The 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
120 J/kg
Mixed-layer CIN
-102 J/kg
Mixed-layer LCL
1612 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS52 KGSP 051918
SVRGSP
GAC147-052015-
/O.NEW.KGSP.SV.W.0340.070805T1917Z-070805T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
317 PM EDT SUN AUG 5 2007

THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HART COUNTY IN NORTHEAST GEORGIA

* UNTIL 415 PM EDT

* AT 314 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 8 MILES NORTHEAST OF
  CARNESVILLE...OR ABOUT 11 MILES WEST OF REED CREEK...AND WAS MOVING
  EAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  HARTWELL AND REED CREEK BY 340 PM EDT...

PEOPLE IN THE PATH OF THIS SEVERE THUNDERSTORM SHOULD BE ALERT FOR
LARGE HAIL AND DAMAGING WINDS. FREQUENT LIGHTNING AND LOCALLY HEAVY
RAIN CAN OCCUR WITH ANY THUNDERSTORM. SEEK SHELTER INDOORS AWAY FROM
WINDOWS AND DOORS UNTIL THE STORM PASSES.

TO REPORT DAMAGING WINDS...LARGE HAIL...OR FLOODING...THROUGH OUR
AUTOMATED REPORTING SYSTEM...CALL OUR TOLL FREE NUMBER...
1 8 7 7...6 3 3...6 7 7 2.

LAT...LON 3449 8306 3432 8310 3424 8294 3440 8283
      3445 8286

$$
MCAVOY
2 follow-up statements
000 
WWUS52 KGSP 051945
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
345 PM EDT SUN AUG 5 2007

GAC147-052015-
/O.CON.KGSP.SV.W.0340.000000T0000Z-070805T2015Z/
HART GA-
345 PM EDT SUN AUG 5 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR EASTERN HART COUNTY...

AT 344 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR REED CREEK...OR ABOUT
3 MILES NORTH OF HARTWELL...MOVING SOUTHEAST AT 25 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  NUBERG BY 410 PM EDT...

LAT...LON 3442 8299 3422 8297 3427 8278 3440 8283
      3445 8286

$$
MCAVOY
000 
WWUS52 KGSP 052013
SVSGSP

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
413 PM EDT SUN AUG 5 2007

GAC147-052023-
/O.EXP.KGSP.SV.W.0340.000000T0000Z-070805T2015Z/
HART GA-
413 PM EDT SUN AUG 5 2007

...THE SEVERE THUNDERSTORM WARNING FOR HART COUNTY EXPIRES AT 415 PM 
EDT...

STORMS HAVE WEAKENED TO BELOW SEVERE LIMITS OVER THE EASTERN PART OF 
THE COUNTY.

LAT...LON 3442 8299 3422 8297 3427 8278 3440 8283
      3445 8286

$$
MCAVOY

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 5, 1:51 PM EDT, 1 hour 26 minutes earlier.

Area forecast discussion, Aug 5, 1:51 PM EDT, 1 hour 26 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
151 PM EDT SUN AUG 5 2007

.SYNOPSIS...
AN UPPER LEVEL RIDGE WILL BUILD THROUGH A DEEP LAYER ACROSS THE
REGION AND PERSIST THROUGH THURSDAY...BEFORE AN UPPER LEVEL TROF
BEGINS TO DEVELOP DOWN THE EAST COAST FRIDAY THROUGH THE WEEKEND. THIS
WEATHER PATTERN WILL MAINTAIN HOT...AND ABOVE NORMAL TEMPERATURES
THROUGHOUT THE WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
AT 15Z...SEVERAL AREAS ACROSS THE PIEDMONT HAVE REACHED 90 DEGREES.
BASED ON THE LATEST MOS AND OBSERVATIONS...IT APPEARS THAT THE GOING
FORECAST IS IN GOOD SHAPE. I WILL WARM TEMPS A DEGREE OR TWO ACROSS
THE I-40 CORRIDOR OF THE FOOTHILLS AND PIEDMONT TO COME A LITTLE
CLOSER TO TEMPERATURES OBSERVED YESTERDAY. DWPTS SHOULD MIX
EFFICIENTLY THIS AFTERNOON...RESULTING IN VALUES NEAR 60 DEGREES. THE
LOWER DEWPOINTS SHOULD YIELD HEAT INDEX VALUES CLOSE TO THE TEMPS
AND LOW CAPES. IN FACT...CAPES SHOULD STRUGGLE TO REACH 500 J/KG
EAST OF I-26. THE GREATEST INSTABILITY SHOULD REMAIN OVER THE
SOUTHERN AND CENTRAL MTNS AND ADJACENT FOOTHILLS. SHORT RANGE MODELS
DO ADVERTISE TSRA CLUSTERS INITIATING OVER KY AND E TN THIS
AFTERNOON. ANY ACTIVITY WILL MOVE EAST TO THE SOUTHERN APPALACHIANS.
I WILL HIGHLIGHT THE TN BORDER COUNTIES AND HIGH RIDGES WITH SCT
TSRA THIS AFTERNOON...SPREADING SLIGHT EAST THIS EVENING.
OTHERWISE...THE CWA WILL REMAIN HOT AND DRY. THE AIR QUALITY ACTION
DAY REMAINS IN EFFECT UNTIL 9 PM FOR THE CLT REGION.

&&

.SHORT TERM /MONDAY THROUGH WEDNESDAY NIGHT/...
SHORT TERM MODELS ARE IN DECENT AGREEMENT WITH PLACEMENT AND
STRENGTH OF H5 PATTERN MON THROUGH WED. VERY LITTLE SPREAD ACROSS
THE SOUTHEAST ACCORDING TO THE 21Z SREF WITH REGARD TO THE H5 FIELD
AND MSLP THROUGH 84 HRS...WITH THE MAIN FEATURES BEING INCREASING
HEIGHTS ALOFT AND LEE SIDE TROF DEVELOPING IN CONTINUING LLVL
NORTHWEST FLOW.

THE BIG STORY FOR THE SHORT TERM CONTINUES TO BE MAX TEMPS. MODELS
HAVE BACKED OFF ON THE STRENGTH OF H5 RIDGE A BIT...BUT A STAGNANT
AIRMASS WILL ENGULF THE CAROLINAS BEGINNING LATE MONDAY AS STACKED
HIGH BUILDS EAST. THIS WILL ENABLE VERY HOT TEMPERATURES TO
MATERIALIZE AND IT STILL LOOKS LIKE KAVL AND KGSP WILL HAVE THE BEST
CHANCE OF TYING OR BREAKING RECORD HIGHS TUE AND WED. THE GREATEST
POSSIBLE AREAS OF HEAT ADVISORY CRITERIA BEING MET WILL BE ALONG
AND SOUTH OF INTERSTATE 85 TUE...AND PRETTY MUCH ALL NON/MOUNTAIN
LOCATIONS WED.

MOUNTAIN TOP CONVERGENCE WILL AGAIN BE THE MAIN TRIGGER FOR
AFTERNOON CONVECTION AND MOST OF THE ACTIVITY SHOULD REMAIN ISOLATED
ACROSS THE HIGHER ELEVATIONS. BUFKIT SBCAPE VALUES FOR KAVL SEEM
PRETTY LOW MON...AROUND 500 J/KG...HOWEVER ENOUGH MOUNTAIN WAVE
ACTION SHOULD HELP INSTIGATE DEEPER CONVECTION. ON TUE AND
WED...AVAILABLE CAPE BECOMES LARGE AGAIN WITH THE INCREASE OF
SURFACE TEMPS CREATING DECENT LI NUMBERS...SO WILL ONCE AGAIN EXPECT
ISOLATED CONVECTIVE ACTIVITY...WITH A COUPLE STRONG AND POSSIBLY SEVERE
LEVEL STORMS DEVELOPING.

&&

.LONG TERM /THURSDAY THROUGH SUNDAY/...
THE WX PATTERN CONTINUES TO BE DOMINATED BY LARGE SCALE RIDGING
THU...BUT A TREND TOWARD LOWERING HEIGHTS ALOFT ACROSS THE EAST
COAST IS PROGGED BY THE LT MODELS THROUGH SAT. MAX TEMPS WILL REMAIN
HOT AND ABOVE NORMAL BY ABOUT 5 DEGREES...BUT NOT AS HOT AS TUE/WED
WITH DEEP SUBSIDENCE BACKING OFF TO THE WEST. THE MAIN CONCERN FRI
AND SAT WILL BE WHETHER OR NOT OHIO VALLEY MCS ACTIVITY WILL MAKE IT
TO THE CAROLINAS. H5 HEIGHTS DROP AND NW UPPER FLOW INCREASES THE
AMOUNT OF VORT ENERGY ACROSS THE REGION...THEREBY CREATING WIDER
COVERAGE AND PERHAPS ORGANIZATION OF STORMS LATE FRI AND SAT. THE
00Z GFS IS POINTING TO THIS POSSIBILITY...BUT FOR NOW WILL KEEP THE
ISOLATED COVERAGE OF CONVECTION ALREADY IN THE GRIDS.

&&

.AVIATION /18Z SUNDAY THROUGH FRIDAY/...
ISO TO SCT SHRA/TSRA WILL BE WATCHED OVER THE NEXT 6-8 HRS...TAFS
WILL REMAIN DRY FOR NOW. WIDESPREAD HZ EVIDENT ON HOURLY
OBSERVATIONS THIS MORNING AND INTO THE EARLY AFTERNOON. IT APPEARS
THE VIS LIMITATIONS WILL REMAIN THE FORECAST CONCERN TONIGHT AND MON
AM. MOS AND PERSISTENCE SUPPORTS A MENTION OF MVFR BR/HZ AFTER 6Z
TONIGHT...WITH KAVL TEMPO SLIPPING INTO IFR. MIXING AND SLIGHTLY
STRONG WINDS SHOULD ALLOW VIS TO GO P6SM A LITTLE FASTER MON
AM...MAINLY AFTER 14Z.

AVIATION OUTLOOK...OTHER THAN EARLY MORNING FOG AND ISOLD AFTN-EVE
SHWRS/TSTMS...MAINLY MTNS...VFR CONDITIONS EXPECTED THROUGH THE
MIDDLE OF NEXT WEEK.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...AIR QUALITY ACTION DAY UNTIL 9 PM EDT THIS EVENING FOR NCZ036-
     057-069>072-082.
SC...NONE.

&&

SYNOPSIS...SBK
NEAR TERM...NED
SHORT TERM...SBK
LONG TERM...SBK
AVIATION...NED
Hazardous weather outlook, Aug 5, 5:59 AM EDT, 9 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
559 AM EDT SUN AUG 5 2007

GAZ010-017-018-026-028-029-NCZ033-035-037-048>053-056-058-059-
062>065-068-501>510-SCZ001>014-019-061000-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-DAVIE-
MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-GRAHAM-
NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-HENDERSON-
CLEVELAND-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-
559 AM EDT SUN AUG 5 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...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ036-057-069>072-082-061000-
IREDELL-ROWAN-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
559 AM EDT SUN AUG 5 2007

...AIR QUALITY ACTION DAY IN EFFECT UNTIL 9 PM EDT THIS EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PIEDMONT NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   AIR QUALITY ACTION DAY.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ARK

In the hours before

Special weather statement, Aug 5, 3:10 PM EDT, 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
310 PM EDT SUN AUG 5 2007

SCZ004-010-052000-
ANDERSON-GREATER OCONEE-
310 PM EDT SUN AUG 5 2007

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN OCONEE AND WESTERN
ANDERSON COUNTIES THROUGH 400 PM EDT...

AT 306 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 6 MILES NORTHEAST OF FAIR PLAY...OR 10 MILES
SOUTHWEST OF CLEMSON...MOVING SOUTHEAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  TOWNVILLE...SANDY SPRINGS...SADLERS CREEK STATE PARK...FAIR PLAY
  AND ANDERSON.

WIND GUSTS OF 40 TO 50 MPH ARE EXPECTED WITH THIS STORM.

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.

MCAVOY
Local storm report, Aug 5, 3:15 PM EDT, 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
315 PM EDT SUN AUG 05 2007

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

0250 PM     TSTM WND DMG     TOCCOA                  34.58N 83.32W
08/05/2007                   STEPHENS           GA   COUNTY OFFICIAL

            NUMEROUS POWER LINES DOWN IN TOCCOA.

&&

JPT

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 2:43 PM EDTSevere Thunderstorm WarningGSPStephens37 min
Aug 5, 3:02 PM EDTSevere Thunderstorm WarningGSPFranklin32 min

Nearby

Severe Thunderstorm Warnings in Georgia, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.