Alert archive / North Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Raleigh, NC

August 11, 2012Forsyth County, North Carolina

NWS Raleigh, NC issued this special weather statement at Aug 11, 2012, 5:58 PM EDT for Forsyth County, North Carolina. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 11, 2012, 5:58 PM EDT (21:58 UTC)
Expired: Aug 11, 2012, 6:30 PM EDT
In force: 32 min
Issued by: NWS Raleigh, NC

County Forsyth County, NC

The radar

The Roanoke radar (KFCX), 90 km from the middle of the area, began a volume at 22:00 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, 10.0 hours before the alert went out and 31 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: 509 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 762 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Raleigh, NC wrote its last area forecast discussion before this special weather statement went out at Aug 11, 3:18 PM EDT, 2 hours 40 minutes earlier.

Area forecast discussion, Aug 11, 3:18 PM EDT, 2 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RALEIGH NC
318 PM EDT SAT AUG 11 2012

.SYNOPSIS...
AN UPPER LEVEL TROUGH WILL OVER THE TN VALLEY THIS MORNING WILL
MOVING SLOWLY EASTWARD ACROSS THE MIDDLE ATLANTIC REGION LATE THIS
AFTERNOON INTO SUNDAY. WEAK HIGH PRESSURE WILL BUILD IN FROM THE
WEST LATE SUNDAY THROUGH MONDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
AS OF 315 PM SATURDAY...

OVERVIEW:
CLOSED UPPER LOW OVER THE GREAT LAKES WILL LIFT NORTHEAST INTO
QUEBEC TONIGHT. ATTENDANT UPPER TROUGH AND SURFACE COLD FRONT WILL
REMAIN STALLED OVER WESTERN NC...THEN PROGRESS EASTWARD ACROSS THE
CAROLINAS LATE TONIGHT/EARLY SUNDAY.

PRECIP CHANCES:

VERY CHALLENGING PRECIP/CONVECTIVE FORECAST FOR THIS AFTERNOON AND
THIS EVENING.

THE SURFACE COLD FRONT WAS NEAR THE FOOTHILLS OF THE CAROLINAS AND
VIRGINIA. IN THE BROAD SWLY FLOW EAST OF THE UPPER TROUGH...DEEP
MOISTURE FEATURING PWS OF 1.75-2.0" EXTENDED SW TO NE ALONG THE
ENTIRE ATLANTIC SEABOARD. WV IMAGERY SHOWED A COUPLE OF WEAK S/W
TROUGHS UPSTREAM ACROSS GA/SC EMBEDDED WITHIN THE DEEP MOIST SWLY
FLOW ALOFT. THESE MINOR DISTURBANCES LIFTING NORTHEAST INTO THE
AREA WILL DRIVE RAIN CHANCES THROUGH THE REMAINDER OF THE
MORNING/EARLY AFTERNOON HOURS...UNTIL THE LARGE SCALE ASCENT WILL
FINALLY BEGIN TO INCREASE ACROSS THE AREA BETWEEN 21Z TO 06Z TONIGHT
WITH THE ARRIVAL OF THE MID/UPPER TROUGH DYNAMICS...INCREASING UPPER
JET DIVERGENCE ATTENDANT TO A 70-75KT JETSTREAK...AND ALONG THE SLOW
EASTWARD MOVING LOW-LEVEL FRONTAL CONVERGENCE ZONE.

THE CHALLENGING ASPECT TO ALL THIS AND WHAT MAY EVENTUALLY
BE THE TELL-TELL SIGN IN DETERMINING THE AREAL COVERAGE/RAINFALL
AMOUNTS AND STRENGTH/SEVERITY OF THE STORMS...WILL BE HOW MUCH
INSOLATION WE WILL SEE IN THE MOISTURE-LADEN-EXTENSIVE CLOUD COVER
BLANKETING THE REGION. THE RESULTANT WEAK MID-LEVEL LAPSE RATES WILL
CERTAINLY TEMPER DESTABILIZATION...BUT MODELS STILL SUGGEST MODERATE
INSTABILITY TO DEVELOP ACROSS THE AREA THIS AFTERNOON WHICH SHOULD
SUPPORT RATHER ROBUST POPS. AS SUCH WILL KEEP POPS IN THE LIKELY
CATEGORY AFTER 18Z AND CONTINUING THROUGH 06Z...WITH A WEST TO EAST
TAPERING OF POPS THROUGH DAYBREAK AS DRIER INFILTRATES IN FROM THE
WEST WITH PASSAGE OF THE UPPER TROUGH.

SEVERE THREAT THIS AFTERNOON/TONIGHT:
EXTENSIVE LOW-LEVEL CLOUD COVER WILL SLOW THE DAYTIME HEATING
PROCESS...BUT MODERATE INSTABILITY IS STILL EXPECTED TO DEVELOP BY
MID/LATE AFTERNOON WITH MLCAPE VALUES AROUND 2000 J/KG. SEASONABLY
STRONG 30KTS OF LOW/MID LEVEL FLOW SUGGESTS SOME RISK OF
GUSTY/DAMAGING WINDS IN THE STRONGER STORMS TODAY. FINALLY...WITH
THE SLOW MOVING FRONT...ESPECIALLY ACROSS THE WESTERN PORTIONS OF
THE AREA THROUGH THE AFTERNOON...LOCALLY HEAVY RAIN WILL POSE A
MINOR FLOODING THREAT.

TEMPERATURES:
GIVEN RELATIVELY LITTLE CHANGE IN THE OVERALL PATTERN ASIDE FROM
BEING SLIGHTLY CLOSER TO THE LOW-LEVEL TROUGH ATTENDANT THE UPPER
LEVEL LOW...EXPECT HIGHS SIMILAR TO FRIDAY...LOWER/MID 80S WEST TO
MID/UPPER 80S EAST...OR 83-88F. WITH THE COLD FRONT MAKING SLOW
EASTWARD PROGRESS INTO THE AREA TONIGHT...EXPECT LOWS SLIGHTLY
COOLER THAN THIS MORNING...IN THE MID/UPPER 60S WEST TO UPPER 60S/
LOWER 70S EAST.

&&

.SHORT TERM /SUNDAY THROUGH SUNDAY NIGHT/...
AS OF 315 PM SATURDAY...

FOR SUNDAY...THERE IS STILL SOME UNCERTAINTY WITH RESPECT TO HOW
FAR EAST THE FRONT WILL MAKE IT...NEVERTHELESS...STRONG INSOLATION
WITHIN THE LINGERING LOW-LEVEL MOIST THETA-E TONGUE ACROSS THE
COASTAL PLAIN WILL BE MORE ENOUGH TO SUPPORT SLIGHT TO SMALL CHANCE
POPS. THEREFORE...WILL KEEP SLIGHT CHANCE OF AFTERNOON POPS ALONG
AND EAST THE I-95 CORRIDOR. THE PASSAGE OF THE FRONT WILL BRING
NOTICEABLY LESS HUMID AIR INTO THE CAROLINAS ON SUNDAY...THERE IS
PRETTY MUCH ZERO/NEUTRAL TEMPERATURE ADVECTION BEHIND THE FRONT WITH
ABUNDANT SUNSHINE SUNDAY AFTERNOON RESULTING IN AFTERNOON HIGHS A
GOOD 3 TO 5 DEGREES WARMER THAN SATURDAY. HIGHS SUNDAY IN THE UPPER
80S TO AROUND 90. MOSTLY CLEAR SUNDAY NIGHT. MINS IN THE MID 60S
NORTH TO UPPER 60S SOUTH.

&&

.LONG TERM /MONDAY THROUGH SATURDAY/...
AS OF 300 PM SATURDAY...

TO START OUT THE LONG TERM PERIOD...WEAK UPPER RIDGING AND SURFACE
HIGH PRESSURE WILL BE IN PLACE ACROSS THE AREA. AS A RESULT AM
EXPECTING DRY CONDITIONS AND MOSTLY TO PARTLY SUNNY SKIES. WEAK WARM
AIR ADVECTION WILL ALLOW MAX TEMPERATURES RISING NEAR OR JUST ABOVE
90 DEGREES...SLIGHTLY ABOVE NORMAL. BY TUESDAY...ANOTHER UPPER LEVEL
TROUGH AND ASSOCIATED SURFACE FRONT WILL APPROACH THE REGION. WHILE
MODELS GENERALLY AGREE ON THE TIMING OF THIS TROUGH/FRONT...THERE IS
STILL QUITE A BIT OF DISAGREEMENT WITH RESPECT TO THE STRENGTH OF
THE UPPER LEVEL TROUGH. THE WEAKER ECMWF DOES NOT SHOW MUCH IN THE
WAY OF PRECIP TUESDAY INTO WEDNESDAY AS THESE FEATURES APPROACH THE
REGION...HOWEVER THE STRONGER GFS AND CANADIAN SHOW MUCH MORE IN THE
WAY OF PRECIP DURING THIS TIME FRAME. DUE TO THE UNCERTAINTY AT THIS
TIME...WILL MAINTAIN FORECAST CONTINUITY AND CONTINUE TO CARRY LOW
CHANCE POPS TUESDAY INTO TUESDAY NIGHT WITH SLIGHT CHANCE BY
WEDNESDAY AFTERNOON.

IT STILL LOOKS LIKE FAIR WEATHER CONDITIONS WILL RETURN ON THURSDAY
AS SURFACE HIGH PRESSURE AND A WEAK UPPER LEVEL RIDGE MOVE IN FROM
THE WEST. HOWEVER...UNCERTAINTY RETURNS FOR THE END OF THE FORECAST
PERIOD AS ANOTHER UPPER LEVEL TROUGH AND ASSOCIATED SURFACE FRONT
APPROACH THE REGION. THE ECMWF IS STRONGER AND FASTER WITH THE
SYSTEM...WHILE THE GFS IS WEAKER AND THEREFORE SLOWER WITH THE
PROGRESSION OF THE SYSTEM. WILL THEREFORE GO NO HIGHER THAN SLIGHT
CHANCE POPS DURING THIS PERIOD UNTIL CONFIDENCE BECOMES BETTER. MAX
TEMPS WILL GENERALLY BE IN THE UPPER 80S TO LOWER 90S...WITH
OVERNIGHT LOWS IN THE UPPER 60S TO LOWER 70S THROUGH THE PERIOD.

&&

.AVIATION /18Z SATURDAY THROUGH THURSDAY/...
AS OF 130 PM SATURDAY...

WITH A COLD FRONT JUST TO OUR WEST AND A VERY MOIST AND UNSTABLE AIR
MASS PRESENT OVER THE REGION AHEAD OF THE FRONT...CONVECTION HAS
ALREADY DEVELOPED EARLY THIS AFTERNOON ACROSS MOST OF CENTRAL NC.
HAVE INCLUDED MENTION OF THUNDER (AND ASSOCIATED MVFR CONDITIONS) AT
ALL TAF SITES FOR THE NEXT SEVERAL HOURS...THEN WITH VCSH THROUGH
THE LATE EVENING/EARLY OVERNIGHT HOURS. SIMILAR TO LAST NIGHT...
SHOWERS AND/OR STORMS WILL BE POSSIBLE THROUGHOUT THE OVERNIGHT
HOURS...ESPECIALLY FROM THE TRIANGLE AND EAST...BUT CONFIDENCE IN
COVERAGE AND LOCATION IS TOO LOW TO INCLUDE ANY MENTION IN THE TAF
FOR NOW. ANOTHER NIGHT OF MVFR/IFR CONDITIONS ARE EXPECTED AS THE
FRONT WILL BE SLOW TO ADVANCE INTO THE AREA. CONDITIONS SHOULD
IMPROVE FIRST ACROSS THE TRIAD DURING THE EARLY MORNING HOURS OF
SUNDAY AS THE FRONT MOVES THROUGH...AND BY MID MORNING FURTHER EAST
(WHERE THERE IS UNCERTAINTY ON HOW FAR EAST THE FRONT WILL ACTUALLY
MAKE IT). THERE COULD BE AN ISOLATED SHOWER AND/STORM ACROSS THE
EAST ON SUNDAY...BUT WILL LEAVE MENTION OUT OF THE TAF FOR NOW.

OUTLOOK...DRIER AND MORE STABLE AIR WILL GRADUALLY OVERSPREAD
CENTRAL NC ON SUNDAY LEADING TO IMPROVING AVIATION CONDITIONS.
MAINLY VFR CONDITIONS ARE EXPECTED SUNDAY THROUGH WEDNESDAY...BUT
ISOLATED TO SCATTERED (MAINLY AFTERNOON/EVENING) CONVECTION WILL
RETURN FOR TUESDAY INTO WEDNESDAY.

&&

.RAH WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

SYNOPSIS...CBL
NEAR TERM...CBL
SHORT TERM...CBL
LONG TERM...KRR
AVIATION...KRR

Hazardous weather outlook, Aug 11, 7:04 AM EDT, 10 hours 54 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE RALEIGH NC
704 AM EDT SAT AUG 11 2012

NCZ007>011-021>028-038>043-073>078-083>086-088-089-121115-
PERSON-GRANVILLE-VANCE-WARREN-HALIFAX-FORSYTH-GUILFORD-ALAMANCE-
ORANGE-DURHAM-FRANKLIN-NASH-EDGECOMBE-DAVIDSON-RANDOLPH-CHATHAM-WAKE-
JOHNSTON-WILSON-STANLY-MONTGOMERY-MOORE-LEE-HARNETT-WAYNE-ANSON-
RICHMOND-SCOTLAND-HOKE-CUMBERLAND-SAMPSON-
704 AM EDT SAT AUG 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL NORTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

ISOLATED SEVERE THUNDERSTORMS WITH A PRIMARY THREAT OF DAMAGING
WINDS WILL BE POSSIBLE THIS AFTERNOON INTO TONIGHT AS AN UPPER
LEVEL TROUGH APPROACHES FROM THE WEST. LOCALLY HEAVY RAINFALL CAN
ALSO BE EXPECTED WITH ANY THUNDERSTORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

VINCENT

In the hours before

Special weather statement, Aug 11, 3:19 PM EDT, 2 hours 39 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
319 PM EDT SAT AUG 11 2012

NCZ007>010-022>025-039-112015-
ALAMANCE-DURHAM-GRANVILLE-GUILFORD-ORANGE-PERSON-RANDOLPH-VANCE-
WARREN-
319 PM EDT SAT AUG 11 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS WARREN...VANCE...RANDOLPH...
PERSON...ORANGE...GUILFORD...GRANVILLE...DURHAM AND ALAMANCE COUNTIES
THROUGH 415 PM EDT...

AT 319 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS OVER
CANE CREEK RESERVOIR...OR ABOUT 9 MILES WEST OF CHAPEL HILL...MOVING
NORTHEAST AT 25 MPH.

LOCATIONS IN THE PATH OF THESE STORMS INCLUDE CARRBORO...EFLAND...
HILLSBOROUGH...SCHLEY...BAHAMA.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

HEAVY RAINFALL AND MINOR FLOODING.

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. STRONG WINDS ARE
CAPABLE OF KNOCKING DOWN SMALL TREES AND BLOWING AROUND TRASH CANS...
POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.

&&

LAT...LON 3655 7810 3618 7846 3618 7850 3604 7860
      3607 7868 3607 7875 3598 7871 3592 7876
      3593 7881 3587 7883 3588 7925 3584 7927
      3585 7985 3626 7950 3625 7916 3655 7913
TIME...MOT...LOC 1919Z 227DEG 21KT 3594 7918

23

Special weather statement, Aug 11, 3:29 PM EDT, 2 hours 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
329 PM EDT SAT AUG 11 2012

NCZ088-089-112030-
CUMBERLAND-SAMPSON-
329 PM EDT SAT AUG 11 2012

...SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS SAMPSON AND CUMBERLAND
COUNTIES THROUGH 430 PM EDT...

AT 329 PM EDT...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS
WITH VERY HEAVY RAIN 8 MILES WEST OF GARLAND...OR ABOUT 14 MILES
NORTH OF ELIZABETHTOWN...MOVING NORTH AT 35 MPH.

SOME LOCATIONS IMPACTED INCLUDE...ROSEBORO...SALEMBURG...HOBBTON.

HAZARDS INCLUDE...
GUSTY WINDS OF 30 TO 40 MPH.

HEAVY RAINFALL AND MINOR FLOODING.

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. STRONG WINDS ARE
CAPABLE OF KNOCKING DOWN SMALL TREES AND BLOWING AROUND TRASH CANS...
POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.

&&

LAT...LON 3461 7832 3467 7833 3470 7838 3474 7839
      3485 7850 3485 7865 3525 7862 3527 7859
      3519 7816 3509 7817 3505 7815 3489 7814
      3474 7819 3472 7814 3455 7825
TIME...MOT...LOC 1929Z 197DEG 29KT 3482 7852

23

Special weather statement, Aug 11, 3:42 PM EDT, 2 hours 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
342 PM EDT SAT AUG 11 2012

NCZ009-010-026-027-112045-
FRANKLIN-NASH-VANCE-WARREN-
342 PM EDT SAT AUG 11 2012

...HEAVY RAIN WILL MOVE ACROSS NASH...WARREN...VANCE AND FRANKLIN
COUNTIES THROUGH 445 PM EDT...

AT 342 PM EDT...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS
WITH VERY HEAVY RAIN OVER AFTON...OR ABOUT 10 MILES SOUTH OF
WARRENTON...MOVING NORTHEAST AT 40 MPH.

SOME LOCATIONS WHICH WILL EXPERIENCE HEAVY RAIN INCLUDE...
WARRENTON...MACON...LAKE GASTON...LAKE GASTON.

HAZARDS INCLUDE...
GUSTY WINDS OF 30 TO 40 MPH.

HAZARDS INCLUDE...
AN EXCESSIVE AMOUNT OF DEADLY CLOUD TO GROUND LIGHTNING.

HAZARDS INCLUDE...
HEAVY RAINFALL AND MINOR FLOODING.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3654 7790 3652 7789 3649 7791 3636 7792
      3620 7801 3619 7798 3619 7796 3619 7798
      3618 7798 3593 7818 3604 7854 3609 7854
      3613 7852 3655 7820
TIME...MOT...LOC 1942Z 219DEG 35KT 3627 7821

23

Special weather statement, Aug 11, 4:07 PM EDT, 1 hour 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
407 PM EDT SAT AUG 11 2012

NCZ010-011-026>028-041>043-077-078-089-112130-
EDGECOMBE-FRANKLIN-HALIFAX-HARNETT-JOHNSTON-NASH-SAMPSON-WAKE-WARREN-
WAYNE-WILSON-
407 PM EDT SAT AUG 11 2012

...NUMEROUS SHOWERS AND THUNDERSTORMS WILL MOVE ACROSS
SAMPSON...HARNETT...WAYNE...JOHNSTON...NASH...WILSON...WARREN...WAKE.
..HALIFAX...FRANKLIN AND EDGECOMBE COUNTIES THROUGH 530 PM EDT...

AT 406 PM EDT...DOPPLER RADAR INDICATED SHOWERS AND THUNDERSTORMS
WITH VERY HEAVY RAIN OVER SIMS...OR ABOUT 16 MILES SOUTH OF
NASHVILLE...MOVING NORTHEAST AT 20 MPH.

SOME LOCATIONS IMPACTED INCLUDE...WILSON...NEW HOPE...ELM CITY...
SHARPSBURG...ROCKY MOUNT...KINGSBORO.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

HEAVY RAINFALL AND MINOR FLOODING.

THIS INCLUDES INTERSTATE 40 BETWEEN EXITS 325 AND 348.

THIS INCLUDES INTERSTATE 95 BETWEEN EXITS 70 AND 173.

THESE STORMS WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3608 7731 3600 7740 3591 7734 3582 7735
      3580 7747 3557 7782 3518 7783 3515 7790
      3519 7801 3518 7816 3512 7817 3527 7870
      3650 7786 3649 7764 3641 7754 3632 7757
      3633 7744 3622 7738 3616 7727 3610 7722
TIME...MOT...LOC 2006Z 226DEG 19KT 3574 7801

23

Local storm report, Aug 11, 5:41 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
541 PM EDT SAT AUG 11 2012

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

0523 PM     TORNADO          STANTONSBURG            35.61N  77.82W
08/11/2012                   WILSON             NC   911 CALL CENTER

            POSSIBLE TORNADO TOUCH DOWN. ATTACHED CAR PORT BLOWN
            OFF HOME AND TREE BLOWN DOWN. RESIDENT STATES THAT HE
            SAW A FUNNEL CLOUD LOWER AND TOUCH DOWN.

&&

EVENT NUMBER RAH1200851

NP

Special weather statement, Aug 11, 5:58 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE RALEIGH NC
558 PM EDT SAT AUG 11 2012

NCZ021-112230-
FORSYTH-
558 PM EDT SAT AUG 11 2012

...A STRONG THUNDERSTORM WILL MOVE ACROSS FORSYTH COUNTY THROUGH 630
PM EDT...

AT 558 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
WALKERTOWN...OR ABOUT 7 MILES NORTHEAST OF WINSTON-SALEM...MOVING
NORTHEAST AT 20 MPH.

SOME LOCATIONS AFFECTED BY THIS STORM INCLUDE...BELEWS CREEK.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

SEEK SHELTER IN A NEARBY BUILDING OR VEHICLE. STRONG WINDS ARE
CAPABLE OF KNOCKING DOWN SMALL TREES AND BLOWING AROUND TRASH CANS...
POTTED PLANTS...LAWN FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.

&&

LAT...LON 3627 8028 3627 8023 3626 8023 3626 8004
      3620 8003 3613 8004 3606 8026 3622 8037
TIME...MOT...LOC 2158Z 229DEG 18KT 3620 8019

23

The office that day

Everything else NWS Raleigh, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 11:32 PM EDT	Special Weather Statement	RAH	Forsyth	43 min
Aug 11, 1:01 AM EDT	Special Weather Statement	RAH	Forsyth	59 min
Aug 11, 2:15 AM EDT	Special Weather Statement	RAH	Forsyth	30 min
Aug 11, 4:21 AM EDT	Special Weather Statement	RAH	Davidson	24 min
Aug 11, 4:48 AM EDT	Special Weather Statement	RAH	Guilford	12 min
Aug 11, 5:35 AM EDT	Special Weather Statement	RAH	Person	40 min
Aug 11, 6:11 AM EDT	Special Weather Statement	RAH	Person	49 min
Aug 11, 6:44 AM EDT	Special Weather Statement	RAH	Vance	46 min
Aug 11, 12:03 PM EDT	Special Weather Statement	RAH	Wilson	57 min
Aug 11, 12:44 PM EDT	Special Weather Statement	RAH	Wayne	61 min
Aug 11, 12:59 PM EDT	Special Weather Statement	RAH	Franklin, Halifax, Warren	61 min
Aug 11, 1:05 PM EDT	Special Weather Statement	RAH	Alamance	55 min
Aug 11, 1:13 PM EDT	Tornado Warning	RAH	Halifax, Nash	25 min
Aug 11, 1:33 PM EDT	Special Weather Statement	RAH	Orange, Person	57 min
Aug 11, 1:59 PM EDT	Special Weather Statement	RAH	Granville, Orange	61 min
Aug 11, 2:08 PM EDT	Severe Thunderstorm Warning	RAH	Granville, Vance	52 min
Aug 11, 2:26 PM EDT	Severe Thunderstorm Warning	RAH	Durham, Granville, Orange, Person, Vance	50 min
Aug 11, 2:50 PM EDT	Special Weather Statement	RAH	Franklin, Warren	55 min
Aug 11, 3:19 PM EDT	Special Weather Statement	RAH	Alamance, Durham, Granville, Orange, Person, Vance	56 min
Aug 11, 3:29 PM EDT	Special Weather Statement	RAH	Sampson	61 min
Aug 11, 3:30 PM EDT	Flash Flood Warning	RAH	Davidson, Guilford, Randolph	3 hr
Aug 11, 3:42 PM EDT	Special Weather Statement	RAH	Franklin, Warren	63 min
Aug 11, 4:07 PM EDT	Areal Flood Advisory	RAH	Franklin, Halifax, Warren	3 hr
Aug 11, 4:07 PM EDT	Special Weather Statement	RAH	Edgecombe, Halifax, Johnston, Nash, Wayne, Wilson	83 min
Aug 11, 4:36 PM EDT	Areal Flood Advisory	RAH	Nash, Wayne, Wilson	3 hr
Aug 11, 4:36 PM EDT	Severe Thunderstorm Warning	RAH	Johnston, Wayne, Wilson	69 min
Aug 11, 5:13 PM EDT	Tornado Warning	RAH	Edgecombe, Wilson	62 min
Aug 11, 5:15 PM EDT	Areal Flood Advisory	RAH	Edgecombe, Halifax, Wilson	3 hr
Aug 11, 7:33 PM EDT	Flash Flood Warning	RAH	Davidson, Guilford, Randolph	3 hr

Nearby

Special Weather Statements in North Carolina, 2012 Every special weather statement in 2012

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.