Alert archive / South Carolina / Special Weather Statements in 2012
Special Weather Statement, NWS Wilmington, NC
NWS Wilmington, NC issued this special weather statement at Aug 6, 2012, 3:54 PM EDT for Florence County, Marion County, South Carolina. It was in force for 66 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 6, 2012, 3:54 PM EDT (19:54 UTC)
- Expired
- Aug 6, 2012, 5:00 PM EDT
- In force
- 66 min
- Issued by
- NWS Wilmington, NC
Counties Florence County, SC, Marion County, SC
The radar
The Wilmington radar (KLTX), 104 km from the middle of the area, began a volume at 19:58 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
Charleston AFB, SC (KCHS), launched 12:00Z, 7.9 hours before the alert went out and 154 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
- 2331 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 445 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>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 Wilmington, NC wrote its last area forecast discussion before this special weather statement went out at Aug 6, 3:05 PM EDT, 49 minutes earlier.
Area forecast discussion, Aug 6, 3:05 PM EDT, 49 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE WILMINGTON NC 305 PM EDT MON AUG 6 2012 .SYNOPSIS... A FRONT WILL REMAIN STATIONARY TO THE NORTHWEST OF THE REGION...AND THIS WILL ALLOW FOR A MOIST AND UNSTABLE AIR MASS TO REMAIN IN PLACE THROUGH THE END OF THE WEEK. A SECOND FRONT WILL APPROACH THE AREA AND BECOME STATIONARY ALONG THE COAST THIS WEEKEND. THERE IS A CHANCE OF THUNDERSTORMS AND SHOWERS EACH DAY WITH THE BEST CHANCES ARE TUESDAY AND THIS WEEKEND. && .NEAR TERM /THROUGH 6 AM TUESDAY/... AS OF 300 PM MONDAY...THE FORECAST SETUP IS QUITE SIMILAR TO YESTERDAY. SURGE OF TROPICAL MOISTURE HAS LEAD TO A BAND OF SHOWERS ALONG THE COAST...MAINLY INITIATED BY LL CONVG. THIS AREA OF RAIN IS BEING ADVECTED FURTHER INLAND WHILE CELL MOTION IS TO THE NORTHEAST. THE ACTUAL SEABREEZE HAS HAD VERY WEAK RADAR SIGNATURE TODAY AND IS BETTER DEMARCATED IN VIS SAT IMAGERY...TO THE EAST OF WHICH CLOUD COVER IS VERY MUCH DECREASED. SIMILAR TO YESTERDAY THE VERY NEAR TERM FORECAST WILL SHOW THE WET WEATHER CONTINUE TO DRIFT WESTWARD AND START TO DIMINISH WITH THE DIURNAL CYCLE. THE HRRR PERFORMED QUITE WELL YESTERDAY AND HAS THIS LINE BECOME MUCH MORE BROKEN BY 22Z AND EVEN MORESO TOWARDS SUNSET. SOME QUESTION AS TO WHETHER OR NOT PRECIP DEVELOPS OVER WATER DURING THE OVERNIGHT HOURS. MODEL GUIDANCE NOT TOO EXCITED ABOUT THE PROSPECT BUT THE SLIGHT CHANCE POPS FROM THE PREVIOUS FORECAST SEEMS PLAUSIBLE ENOUGH. && .SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/... AS OF 3 PM MONDAY...WITH STATIONARY FRONT BACK TO THE WEST AND DEEP MOISTURE IS IN PLACE OVER THE AREA...CONDITIONS CONTINUE TO FAVOR A GOOD CHANCE OF SHOWERS AND THUNDERSTORMS OVER THE REGION TUESDAY AND WEDNESDAY. THE MODELS ARE INDICATING A SHORT WAVE TO CROSS THE REGION ON TUESDAY AND WITH THIS LIFT SHOULD ENTICE THE DEVELOPMENT OF RAIN FOR THE ENTIRE COUNTY WARNING AREA. THE MEAN STORM MOTION IS FROM THE SOUTHWEST JUST BELOW 10 KNOTS AND WITH SOME HEAVY DOWNPOURS EXPECT THE FLOW MAYBE QUICK ENOUGH TO HOLD OFF THE CHANCES FOR ANY TYPE OF FLOODING ON TUESDAY. THE SOUTHWEST WINDS ALOFT PATTERN HOLDS UP INTO WEDNESDAY SO EXPECT CHANCES OF RAIN TO CONTINUE. TEMPERATURES ARE EXPECTED REMAIN IN THE MID TO UPPER 80S AND LOWS IN THE MIDDLE 70S. && .LONG TERM /THURSDAY THROUGH MONDAY/... AS OF 3 PM MONDAY...PATTERN ALOFT WILL REMAIN AMPLIFIED THROUGH THE PERIOD WITH RIDGING OVER THE WEST AND TROUGHING OVER THE EAST. EARLY IN THE PERIOD TROUGHING IS ON THE WEAK SIDE...BUT IMPRESSIVE SHORTWAVE DROPPING DOWN THE EAST SIDE OF THE WESTERN RIDGE WILL DRIVE A COLD FRONT INTO THE SOUTHEAST AND HELP AMPLIFY THE 5H TROUGH OVER THE WEEKEND. WITH 5H TROUGH AXIS REMAINING OVER THE OH AND TN VALLEYS GULF MOISTURE WILL CONTINUE TO STREAM INTO THE REGION. COLD FRONT STALLS ACROSS THE AREA SUN THEN STARTS TO WASH OUT MON. DEEP MOISTURE...DIVERGENCE ALOFT...DIURNAL HEATING...AND CONVERGENCE ALONG THE SEA BREEZE AND PIEDMONT TROUGH/COLD FRONT WILL KEEP A CHANCE OF SHOWERS AND THUNDERSTORMS THROUGH THE PERIOD. HIGHEST POP DURING THE PERIOD WILL LIKELY BE SAT...THOUGH WEAK SHORTWAVES THU AND/OR FRI COULD PRODUCE SIGNIFICANT COVERAGE. TEMPERATURES WILL BE WITHIN A DEGREE OR TWO OF CLIMO THROUGH THE PERIOD. && .AVIATION /18Z MONDAY THROUGH SATURDAY/... AS OF 18Z...CONVECTION FIRING ALONG THE RESULTANT THAT WILL PUSH WESTWARD WITH TIME...SLOWER THAN YESTERDAY DUE TO THE SOUTHWEST FLOW ALOFT. LOOK FOR THE SHOWERS AND ISOLATED THUNDERSTORMS TO END AROUND 22Z...WITH MAINLY VFR CONDITIONS EXPECTED THROUGH THE OVERNIGHT HOURS. TIME HEIGHT INDICATES MID AND HIGH CLOUDS WILL BE ON THE INCREASE AS A FRONTAL BOUNDARY THAT HAS BEEN JUST WEST OF THE REGION FOR SEVERAL DAYS FINALLY MOVES IN. TUESDAY...AGAIN A MID OR HIGH CLOUD CEILING WITH SCATTERED CONVECTION AROUND. MAINLY SOUTHWEST FLOW THROUGH THE PERIOD...MORE SOUTHERLY ALONG THE COAST. EXTENDED OUTLOOK...MVFR/IFR VSBYS AND LOW CEILINGS FROM BR/FG POSSIBLE EACH MORNING WITH DAILY THREAT FOR DIURNALLY DRIVEN CONVECTION EACH DAY. && .MARINE... AS OF 1030 AM MONDAY/THROUGH TONIGHT/...THE PRESSURE GRADIENT OVER THE LANDMASS WILL BE QUITE LIGHT THROUGH THE PERIOD. HIGH PRESSURE ACROSS THE WEST AND CENTRAL ATLANTIC WILL STILL BE THE DOMINANT WIND AND WAVE MAKER THEN. A SOUTH TO SOUTHWESTERLY WIND WILL BE CAPPED AT JUST 10KT. WIND WAVES IN THE 2 TO 3 FT RANGE WILL BE COMPRISED OF BOTH THE LIGHT WIND WAVE AND SOME 9 SEC SWELL ENERGY. SHORT TERM /6 AM TUESDAY THROUGH WEDNESDAY NIGHT/... AS OF 3 PM MONDAY...SOUTH TO SOUTHWEST WINDS OF 10 TO 15 KNOTS WILL CONTINUE OVER THE WATERS THROUGH THE PERIOD AS A STATIONARY FRONT REMAINS INLAND THROUGH THE PERIOD. SEAS WILL REMAINS AROUND 3 FEET WITH AN INCREASE TO 4 TO 5 FEET AT 20 MILES OFF THE COAST LATE WEDNESDAY EVENING. THIS WILL BE RELATED TO AN INCREASE IN THE SOUTHERLY WINDS. LONG TERM /THURSDAY THROUGH SATURDAY/... AS OF 3 PM MONDAY...SOUTHWEST FLOW CONTINUES THROUGH THE PERIOD...THOUGH WITH SPEEDS INCREASING AS A COLD FRONT APPROACHES THE REGION FROM THE NORTHWEST. WINDS 10 TO 15 KT THU INTO THU NIGHT INCREASE TO 15 TO 20 FRI AND FRI NIGHT AS GRADIENT TIGHTENS UP AND LOW LEVEL JET DEVELOPS. FRONT MOVES INTO THE REGION SAT RELAXING PRESSURE GRADIENT AND SHIFTING STRONGEST LOW LEVEL JETTING NORTH AND EAST. THIS WILL ALLOW WINDS TO DROP BACK CLOSER TO 15 KT. SEAS 2 TO 4 FT THU WILL BUILD WITH INCREASING WINDS FRI AND FRI NIGHT. ISOLATED 6 FT MAY DEVELOP WELL AWAY FROM THE COAST. HEADLINES ARE POSSIBLE FOR BOTH FRI AND FRI NIGHT...BUT LOW CONFIDENCE WHETHER IT WILL BE SCA OR SCEC. REDUCTION IN WINDS SAT/SAT NIGHT ALLOWS SEAS TO DROP BACK INTO THE 2 TO 4 FT RANGE WITH SOME ISOLATED 5 FT POSSIBLE. && .ILM WATCHES/WARNINGS/ADVISORIES... SC...NONE. NC...NONE. MARINE...NONE. && NEAR TERM...REK/MBB SHORT TERM...HAWKINS LONG TERM...III AVIATION...DL
Hazardous weather outlook, Aug 6, 4:20 AM EDT, 11 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON NC 420 AM EDT MON AUG 6 2012 NCZ087-096-099-105-107-109-SCZ017-023-024-032-033-039-053-055-070830- ROBESON-BLADEN-COLUMBUS-INLAND PENDER-INLAND NEW HANOVER- INLAND BRUNSWICK-MARLBORO-DARLINGTON-DILLON-FLORENCE-MARION- WILLIAMSBURG-INLAND HORRY-INLAND GEORGETOWN- 420 AM EDT MON AUG 6 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. NCZ106-108-110-SCZ054-056-070830- COASTAL PENDER-COASTAL NEW HANOVER-COASTAL BRUNSWICK-COASTAL HORRY- COASTAL GEORGETOWN- 420 AM EDT MON AUG 6 2012 ...MODERATE RISK OF RIP CURRENTS IN EFFECT THROUGH THIS EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH 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. MODERATE RISK OF RIP CURRENTS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. AMZ250-252-254-256-270-070830- SURF CITY TO CAPE FEAR NC OUT 20 NM- CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20 NM- LITTLE RIVER INLET TO MURRELLS INLET SC OUT 20 NM- MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT 20 NM- WATERS FROM SURF CITY NC TO SOUTH SANTEE RIVER SC FROM 20 TO 40 NM- 420 AM EDT MON AUG 6 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR AM AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Aug 6, 3:54 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
354 PM EDT MON AUG 6 2012
SCZ024-032-033-053-062100-
DILLON-FLORENCE-INLAND HORRY-MARION-
354 PM EDT MON AUG 6 2012
...STRONG THUNDERSTORMS WILL MOVE ACROSS HORRY...FLORENCE...MARION
AND DILLON COUNTIES THROUGH 500 PM EDT...
AT 354 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM NEAR LAKE CITY TO SOUTH OF MARION...MOVING
NORTHEAST AT 20 MPH.
SOME LOCATIONS IMPACTED INCLUDE MARION...MULLINS...BLUE BRICK...
BRITTON NECK...CLAUSSEN...EFFINGHAM...EVERGREEN...FLOYDALE...FORK...
FRIENDFIELD...GALIVANTS FERRY AND GAPWAY.
HAZARDS INCLUDE...
PENNY SIZE HAIL.
GUSTY WINDS OF 40 TO 50 MPH.
THUNDERSTORMS CAN POSE A VARIETY OF THREATS INCLUDING GUSTY WINDS...
SMALL HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALIZED FLOODING. IT
IS RECOMMENDED THAT YOU REMAIN INDOORS UNTIL THE STORMS PASS.
&&
LAT...LON 3429 7971 3429 7968 3431 7967 3430 7963
3435 7960 3433 7910 3427 7903 3389 7930
3395 7984
TIME...MOT...LOC 1954Z 204DEG 20KT 3401 7969 3399 7933
IIIThe office that day
Everything else NWS Wilmington, NC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 5:07 PM EDT | Special Weather Statement | ILM | Pender | 53 min |
Nearby
Special Weather Statements in South Carolina, 2012Every 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.