Alert archive / North Carolina / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 296, NWS Greenville-Spartanburg, SC

July 10, 2007Rowan County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 10, 2007, 3:52 PM EDT for Rowan County, North Carolina. It was in force for 53 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 10, 2007, 3:52 PM EDT (19:52 UTC)
Expired: Jul 10, 2007, 4:45 PM EDT
In force: 53 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Counties, with a storm outline in the text

County Rowan County, NC

The radar

The Roanoke radar (KFCX), 156 km from the middle of the area, began a volume at 19:54 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, 7.9 hours before the alert went out and 75 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 771 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 982 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 25 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 10, 3:20 PM EDT, 32 minutes earlier.

Area forecast discussion, Jul 10, 3:20 PM EDT, 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
320 PM EDT TUE JUL 10 2007

.SYNOPSIS...
HIGH PRESSURE PUSHES FURTHER OFFSHORE AS A COLD FRONT APPROACHES
FROM THE NORTHWEST TONIGHT AND WEDNESDAY. THE FRONT IS EXPECTED TO
MOVE ACROSS THE REGION BY EARLY THURSDAY MORNING. THE FRONT SHOULD
STALL NEAR THE COAST FOR FRIDAY AND SATURDAY WHILE HIGH PRESSURE
PUSHES IN FROM THE NORTH.

&&

.NEAR TERM /THROUGH WEDNESDAY/...
TONIGHT...CONVECTION WILL GRADUALLY TAPER OFF THIS EVENING AS A VORT
MAX EXITS THE AREA AND INSTABILITY WANES. BOTH THE NAM AND GFS SHOW
ANOTHER VORT LOBE ENTER THE AREA AROUND DAWN...WHICH WILL HELP KEEP
SOME LOW TO MID LEVEL CLOUDINESS. MOS GUIDANCE KEEPS  A SLIGHT CHC
POP OVERNIGHT BUT DID NOT PUT THE MENTION IN THE ZONES FOR NOW. ALL
THESE INGREDIENTS WILL KEEP MIN TEMPS ELEVATED A BIT (WENT A DEG OR
TWO ABOVE MAV NUMBERS).

WEDNESDAY...ALL THE SHORT TERM GUIDANCE IS STILL ADVERTISING A
POTENT SHORTWAVE APPROACHING THE CWFA BY MID AFTN. ASSOCIATED WITH
THIS FEATURE...A SFC COLD FRONT WILL APPROACH FROM THE OH/TN VALLEYS
AND BE ALONG THE APPALACHIANS BETWEEN 00-06Z THURSDAY. A LEE TROUGH
SETS UP WEDNESDAY AFTN...TO HELP LOW LEVEL CONVERGENCE. IN ADDITION
TO ALL THIS...THERE WILL BE LOTS OF MOISTURE (PWS FCST TO BE OVER 2
INCHES). SO HAVE GONE WITH CATEGORICAL POP ACROSS THE MTNS AND
LIKELY ELSEWHERE FOR THE AFTN. THEN POP TAPERS TO HIGH CHC MTNS AND
LIKELY PIEDMONT FOR THE EVENING HOURS AS SHORTWAVE EXITS REGION. MAX
TEMPS WERE BUMPED DOWN A COUPLE DEGREES (CLOSE TO MAV MOS) DUE TO
THE DECENT SFC WINDS AND CLOUD COVER AHEAD OF THE FRONT.

&&

.SHORT TERM /WEDNESDAY NIGHT THROUGH FRIDAY/...
BEST SHORT WAVE ENERGY MOVES QUICKLY EAST OF THE AREA WED NITE.
HOWEVER...LINGERING LOW LEVEL MOISTURE AND WESTERLY UPSLOPE FLOW
WILL KEEP HIGH CHC POP OVER THE WESTERN SECTIONS INTO EARLY EVENING
MORE IN LINE WITH THE 09Z SREF THAN THE OPERATIONAL MOS POP. EXPECT
THE LARGE AREA OF CONVECTION TO BE MOVING THROUGH THE MIDDLE AND
EASTERN CWFA ATTM AS WELL. THEREFORE...HAVE LIKELY POP IN THE EARLY
EVENING HERE. EXPECT CONVECTION TO QUICKLY SWEEP EAST OF THE AREA
AFTER MIDNIGHT...SO END PRECIP BY LATE NIGHT. THIS SYSTEM IS
ORGANIZED SO ALONG WITH THE NUMEROUS COVERAGE...SHOULD BE QUITE A
BIT OF RAINFALL AS WELL.

ON THURSDAY...SURFACE FRONT WILL BE EAST OF THE AREA WITH DRY AIR
MASS AND DOWNSLOPE FLOW MOVING IN. OPS MODELS AND SREF HAVE SHOW NO
INSTABILITY ACROSS THE CWFA. MODEL SOUNDINGS ARE CAPPED...SO DRY
FORECAST INDICATED FOR THE ENTIRE CWFA. HIGHS WILL BE NEAR NORMAL
BUT LESS HUMID WITH DRIER THAN USUAL DEW POINTS.

THE DRY FORECAST CONTINUES THURSDAY NIGHT...SINCE THERE WILL BE NO
LINGERING EVENING CONVECTION. LOWS A LITTLE BELOW NORMAL WITH FEW
CLOUDS UNTIL AFTER MIDNIGHT AND CONTINUED LOW DEW POINTS.

LOOKS LIKE ANOTHER ROUND OF AFTERNOON CONVECTION FRIDAY AS A WEAK
FRONTAL SYSTEM MOVES INTO THE AREA. SHORT WAVE ASSOCIATED WITH THIS
SYSTEM MOVES MOVES TO OUR NORTH...KEEPING ANY ORGANIZATION TO A
MINIMUM. ALTHOUGH THERE IS SOME MOISTURE RETURN AS LOW LEVEL FLOW
BECOMES SOUTHWESTERLY...BEST PRECIP CHANCES WILL BE OVER THE
MOUNTAINS. HAVE SCATTERED COVERAGE NORTH AND WEST DROPPING TO
ISOLATED SOUTH OF THE I-85 CORRIDOR. HIGHS A LITTLE BELOW NORMAL.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
THE OPERATIONAL 12Z RUN OF THE GFS STALLS THE FRIDAY FRONT TO OUR
SOUTH LIKE THE OTHER MODELS. HOWEVER...IT SUPPRESSES THE BEST
MOISTURE TO OUR SOUTH KEEPING SATURDAY AND SUNDAY DRY. EVEN THOUGH
IT KEEPS THE EAST COAST TROF IN PLACE...THERE IS LITTLE TO NO SHORT
WAVE ENERGY MOVING THROUGH THE TROF. SINCE THIS IS QUITE A CHANGE
FROM THE PREVIOUS FORECAST DID NOT WANT TO GO COMPLETELY WITH THIS
SOLUTION. THEREFORE...HAVE BLENDED THIS RUN WITH THE PREVIOUS
FORECAST. THIS MEANS MORE OF AN ISOLATED DIURNAL THUNDERSTORM THREAT
FOR THE WEEKEND. TEMPS LOOK TO BE A LITTLE BELOW NORMAL SATURDAY AND
SUNDAY WITH CLOUDS AND LOWER THICKNESSES.

HEIGHTS RISE MONDAY AS WEAK RIDGING DEVELOPS OVER ATLANTIC AND
BUILDS INTO THE SOUTHEAST. THIS PUSHES THE MAIN STORM TRACK TO OUR
NORTH...KEEPING SHORT WAVES TO OUR WEST AND NORTH AS WELL. ANOTHER
FRONTAL SYSTEM APPROACHES THE AREA FROM THE NORTH MONDAY... BUT
STALLS NORTH OF THE AREA TUESDAY WITH THE WEAK RIDGING ALOFT
BLOCKING ANY REAL SOUTHWARD PROGRESSION. THIS LEAVES A WARM MOIST
AIR MASS OVER THE AREA WITH LITTLE SYNOPTIC SCALE FORCING.
HOWEVER...THE WARM MOIST AIR MASS WILL LEAD TO DECENT INSTABILITY
EACH AFTERNOON/EVENING. LOOKS LIKE A TYPICAL SUMMERTIME PATTERN
WHICH MEANS NEAR NORMAL TEMPS WITH LOW CHC AFTERNOON AND EVENING
CONVECTION.

&&

.AVIATION /19Z TUESDAY THROUGH SUNDAY/...
SCATTERED CONVECTION WILL POTENTIALLY AFFECT SOME OF THE TAF SITES
THROUGH ABOUT 00Z. HAVE INCLUDED VICINITY THUNDER MENTION AND CB AT
KAVL...KHKY AND JUST CB AT KAND/KGMU/KGSP TO REFLECT TRENDS IN VIS
SATELLITE AND RADAR IMAGERY. HAVE ALREADY HAD THUNDER AT KAVL AND
KHKY AS OF 19Z. THERE IS DECENT FOG POTENTIAL AT THE AFOREMENTIONED
SITES WHICH HAD RAIN. MODEL SOUNDINGS CONTINUE TO SHOW PLENTY OF
MOISTURE TO SUPPORT MID TO LOW VFR CIGS. THERE WILL BE SOME INCREASE
IN WIND OVERNIGHT (RELATIVE TO TYPICAL NIGHTTIME WINDS)...TOGETHER
WITH CLOUD COVER...WHICH COULD PRECLUDE MUCH COVERAGE OR DURATION OF
FOG. BUT FOR NOW...LEFT MENTION OF LOWERING VSBY AND CIGS AROUND
10-12Z.

AVIATION OUTLOOK...SCATTERED TO WIDESPREAD SHOWERS AND THUNDERSTORMS
ARE EXPECTED WEDNESDAY...WITH THE PASSAGE OF A COLD FRONT FROM THE
NW. CONVECTION WILL WANE WEDNESDAY NIGHT...AND THURSDAY SHOULD BE
DRY. A RETURN TO TYPICAL SUMMERTIME CONDITIONS IS EXPECTED FRIDAY
ONWARD...WITH ISOLATED TO SCATTERED DIURNAL CONVECTION EACH DAY.

&&

.GSP WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
NC...NONE.
SC...NONE.

&&

SYNOPSIS...ARK
NEAR TERM...ARK
SHORT TERM...RWH
LONG TERM...RWH
AVIATION...ARK

Hazardous weather outlook, Jul 10, 6:08 AM EDT, 9 hours 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
608 AM EDT TUE JUL 10 2007

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-111015-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
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-
608 AM EDT TUE JUL 10 2007

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE WESTERN
CAROLINAS AND EXTREME NORTHEAST GEORGIA AGAIN THIS AFTERNOON AND
EVENING. THERE IS THE POSSIBILITY THAT A FEW OF THE STORMS COULD
BECOME SEVERE...WITH THE MAIN THREAT OF DAMAGING WIND GUSTS. A FEW
OF THE STORMS COULD PERSIST OVER SOME LOCATIONS LONG ENOUGH TO
PRODUCE FLOODING. THE STORMS SHOULD WEAKEN BY LATE IN THE EVENING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

AN UPPER LEVEL DISTURBANCE WILL MOVE ACROSS THE REGION LATE IN THE
DAY ON WEDNESDAY AND COULD ENHANCE THE FORMATION OF STRONG TO
SEVERE THUNDERSTORMS IN THE AFTERNOON AND EVENING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND AGAIN ON WEDNESDAY.

MOORE

In the hours before

Local storm report, Jul 10, 1:51 PM EDT, 2 hours 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
151 PM EDT TUE JUL 10 2007

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

0150 PM     HAIL             WEAVERVILLE             35.70N 82.56W
07/10/2007  E0.75 INCH       BUNCOMBE           NC   EMERGENCY MNGR

            PENNY SIZE HAIL REPORTED TO 911

&&

TBENTHAL

Special weather statement, Jul 10, 2:08 PM EDT, 1 hour 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
208 PM EDT TUE JUL 10 2007

NCZ504-506-101845-
EASTERN MCDOWELL-GREATER BURKE-
208 PM EDT TUE JUL 10 2007

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL BURKE AND SOUTHEASTERN
MCDOWELL COUNTIES THROUGH 245 PM EDT...

AT 208 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 3 MILES WEST OF DYSARTSVILLE...OR 8 MILES
SOUTHEAST OF MARION...MOVING EAST AT 10 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO
  MORGANTON...GLENWOOD...GLEN ALPINE...FERO AND DYSARTSVILLE.

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.

BSH

Local storm report, Jul 10, 2:37 PM EDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
237 PM EDT TUE JUL 10 2007

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

0135 PM     HAIL             WEAVERVILLE             35.70N 82.56W
07/10/2007  E0.75 INCH       BUNCOMBE           NC   EMERGENCY MNGR

            PENNY SIZE HAIL REPORTED TO 911

&&
CORRECTED TIME OF EVENT.

BSH

Special weather statement, Jul 10, 2:47 PM EDT, 1 hour 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
247 PM EDT TUE JUL 10 2007

NCZ056-504-101915-
CATAWBA-GREATER BURKE-
247 PM EDT TUE JUL 10 2007

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN BURKE AND WESTERN
CATAWBA COUNTIES THROUGH 315 PM EDT...

AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 4 MILES SOUTH OF ICARD...OR 8 MILES SOUTHWEST OF
HICKORY...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS AFFECTED INCLUDE BUT ARE NOT LIMITED TO RUTHERFORD
  COLLEGE...ST. STEPHENS...NEWTON...LONGVIEW...ICARD...HILDEBRAN...
  HICKORY...COOKSVILLE...CONOVER...CONNELLY SPRINGS AND CLAREMONT.

PEA SIZE HAIL...AND WIND GUSTS OF 30 TO 40 MPH ARE EXPECTED WITH THIS
STORM.

BSH

Local storm report, Jul 10, 2:53 PM EDT, 59 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
253 PM EDT TUE JUL 10 2007

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

0249 PM     TSTM WND DMG     3 E TROUTMAN            35.70N 80.84W
07/09/2007                   IREDELL            NC   EMERGENCY MNGR

            TIN ROOF PEELED BACK ON ROOF OF EMERGENCY MANAGEMENT
            EMPLOYEE

&&

JBP

Local storm report, Jul 10, 3:18 PM EDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
318 PM EDT TUE JUL 10 2007

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

0305 PM     TSTM WND DMG     2 S HICKORY             35.71N 81.33W
07/10/2007                   CATAWBA            NC   COUNTY OFFICIAL

            COUNTY COMMUNICATIONS CENTER REPORTS NUMEROUS TREES AND
            POWER LINES DOWN.

&&

OUTLAW

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:22 PM EDT	Severe Thunderstorm Warning	GSP	Buncombe	53 min
Jul 10, 1:43 PM EDT	Severe Thunderstorm Warning	GSP	Henderson, Polk	37 min
Jul 10, 1:55 PM EDT	Severe Thunderstorm Warning	GSP	Alexander	24 min
Jul 10, 2:29 PM EDT	Severe Thunderstorm Warning	GSP	Alexander	61 min
Jul 10, 2:49 PM EDT	Severe Thunderstorm Warning	GSP	Burke, Catawba	56 min
Jul 10, 2:56 PM EDT	Severe Thunderstorm Warning	GSP	Iredell	64 min
Jul 10, 3:44 PM EDT	Severe Thunderstorm Warning	GSP	Davie	61 min
Jul 10, 4:52 PM EDT	Severe Thunderstorm Warning	GSP	Mecklenburg	23 min
Jul 10, 6:00 PM EDT	Severe Thunderstorm Warning	GSP	Burke	23 min
Jul 10, 7:48 PM EDT	Severe Thunderstorm Warning	GSP	Alexander	32 min
Jul 10, 3:58 PM EDT	Severe Thunderstorm Warning	GSP	Oconee	62 min
Jul 10, 4:13 PM EDT	Severe Thunderstorm Warning	GSP	Abbeville	77 min
Jul 10, 4:44 PM EDT	Severe Thunderstorm Warning	GSP	Anderson, Pickens	48 min
Jul 10, 5:01 PM EDT	Severe Thunderstorm Warning	GSP	Greenville	59 min
Jul 10, 5:22 PM EDT	Severe Thunderstorm Warning	GSP	Spartanburg	57 min
Jul 10, 6:02 PM EDT	Severe Thunderstorm Warning	GSP	Union	43 min
Jul 10, 6:33 PM EDT	Severe Thunderstorm Warning	GSP	Chester, York	46 min
Jul 9, 8:08 PM EDT	Severe Thunderstorm Warning	GSP	Elbert	22 min
Jul 10, 3:25 PM EDT	Severe Thunderstorm Warning	GSP	Habersham, Rabun	65 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2007 Every 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.