Alert archive / North Carolina / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 337, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 5, 2007, 2:07 PM EDT for Catawba County, North Carolina. It was in force for 53 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, 2:07 PM EDT (18:07 UTC)
- Expired
- Aug 5, 2007, 3:00 PM EDT
- In force
- 53 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Counties, with a storm outline in the text
County Catawba County, NC
The radar
The Greer radar (KGSP), 130 km from the middle of the area, began a volume at 18:07 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 2:47 PM EDT | TSTM WND DMG | 3 Nw Terrell, NC | SHERRILLS FORD-TERRELL FIRE AND RESCUE REPORTS SEVERAL LARGE TREE LIMBS DOWN ON MOUNT PLEASANT RD. THAT BLOCKED TRAFFIC. |
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 40 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
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.1 hours before the alert went out and 121 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
- 272 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1629 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS52 KGSP 051807
SVRGSP
NCC035-051900-
/O.NEW.KGSP.SV.W.0337.070805T1807Z-070805T1900Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
207 PM EDT SUN AUG 5 2007
THE NATIONAL WEATHER SERVICE IN GREENVILLE-SPARTANBURG HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN CATAWBA COUNTY IN THE PIEDMONT OF NORTH CAROLINA
* UNTIL 300 PM EDT
* AT 202 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 3 MILES
SOUTH OF NEWTON...AND WAS MOVING EAST AT 10 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
TERRELL BY 300 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 3568 8128 3557 8129 3555 8095 3562 8094
3571 8104
$$
NED1 follow-up statement
000
WWUS52 KGSP 051838
SVSGSP
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
238 PM EDT SUN AUG 5 2007
NCC035-051900-
/O.CON.KGSP.SV.W.0337.000000T0000Z-070805T1900Z/
CATAWBA NC-
238 PM EDT SUN AUG 5 2007
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR SOUTHEASTERN CATAWBA COUNTY...
AT 232 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED 4 MILES WEST OF TERRELL...OR ABOUT 11 MILES SOUTHEAST OF
NEWTON...AND WAS MOVING EAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
TERRELL BY 245 PM EDT...
LAT...LON 3570 8114 3556 8117 3554 8096 3562 8094
3571 8104
$$
MCAVOYWhat 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, 16 minutes earlier.
Area forecast discussion, Aug 5, 1:51 PM EDT, 16 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...NEDHazardous weather outlook, Aug 5, 5:59 AM EDT, 8 hours 8 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
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 5, 3:52 PM EDT | Air Stagnation Advisory | GSP | Alexander, Burke, Cabarrus, Caldwell, Catawba, Davie and 6 more | 29 hr |
| Aug 5, 4:41 PM EDT | Severe Thunderstorm Warning | GSP | Iredell | 28 min |
Nearby
Severe Thunderstorm Warnings in North 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.