Coastal Flood Statement 6, NWS Charleston, SC

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
346 PM EDT SAT AUG 22 2009

.SYNOPSIS...
A COLD FRONT WILL APPROACH FROM THE W THROUGH TONIGHT THEN STALL OVER
THE REGION THROUGH SUNDAY BEFORE DISSIPATING. HIGH PRESSURE WILL
REMAIN OVER THE REGION UNTIL LATE WEEK. ANOTHER COLD FRONT WILL
APPROACH THE REGION LATE WEEK BUT WILL LIKELY STALL OVER THE
SOUTHEAST BY NEXT WEEKEND.

&&

.NEAR TERM /UNTIL 6 AM SUNDAY MORNING/...
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS THE
FORECAST AREA THROUGH LATE AFTERNOON. ANTICIPATE MOST OF THE
ACTIVITY WILL REMAIN SUB-SEVERE BUT CAN NOT RULE OUT AN ISOLATED
SEVERE THUNDERSTORM DUE TO BOUNDARY INTERACTIONS. MAIN CONCERN
WITH THE CONVECTION WILL BE HEAVY RAIN AND ISOLATED WIND DAMAGE.
EXPECT ACTIVITY TO DISSIPATE SOON AFTER SUNSET BUT A LINGERING
ISOLATED SHOWER IS NOT OUT OF THE QUESTION. THINK THE CONVECTION
WILL PUSH TOWARDS THE COAST THROUGH LATE EVENING THUS HAVE
MAINTAINED SLIGHT CHANCE POPS IN THE WESTERN ZONES WITH CHANCE
POPS IN THE NORTHWESTERN TIER SOUTHWEST TOWARDS THE GEORGIA
COASTLINE. SHOWERS WILL THEN TRANSITION OVER THE COASTAL WATERS
AFTER MIDNIGHT.

WITH CLOUDS COVERAGE SLOWLY DECREASING OVERNIGHT...TEMPERATURES
WILL DROP INTO THE UPPER 60S INLAND TO LOW TO MID 70S NEAR THE
COAST. IF WINDS STAY UP THIS COULD KEEP TEMPERATURES CLOSER TO 70
OVER THE INLAND AREAS.

&&

.SHORT TERM /6 AM SUNDAY MORNING THROUGH 6 PM SUNDAY/...
A COLD FRONT WILL PUSH INTO THE AREA AND STALL THROUGH SUNDAY
BEFORE DISSIPATING. DRIER AIR WILL BE FILTERING IN BEHIND THE
COLD FRONT THUS HAVE TOOK OUT ANY MENTION OF POPS FOR SUNDAY.

PARTLY CLOUDY SKIES ARE ANTICIPATED FOR MOST OF THE DAY WHICH WILL
ALLOW TEMPERATURES TO REACH INTO THE LOWER 90S WITH MID 80S ALONG
THE IMMEDIATE COAST.

&&

.LONG TERM /SUNDAY NIGHT THROUGH SATURDAY/...
SUNDAY NIGHT THROUGH WEDNESDAY...THE UPPER TROUGH WILL WEAKEN OVER
THE EAST...AND A WEAKENING STATIONARY FRONT AND ASSOCIATED DEEP
LAYER MOISTURE WILL REMAIN S/E OF THE FORECAST AREA. FURTHER...THE
SEA BREEZE SHOULD PUSH RATHER QUICKLY INLAND MONDAY...TUESDAY AND
WEDNESDAY...LIMITING THE POTENTIAL FOR LOW LEVEL CONVERGENCE ALONG
THIS BOUNDARY. THUS...ODDS FAVOR NEAR NORMAL TEMPERATURES AND NORMAL
TO BELOW NORMAL POPS THROUGH THE PERIOD. 12Z GUIDANCE HINTS AT ONE
OR MORE WEAK WAVES OF LOW PRESSURE DEVELOPING AND PUSHING NE THROUGH
THE BAROCLINIC ZONE OFF THE COAST DURING THE SUNDAY NIGHT THROUGH
TUESDAY TIME FRAME. ODDS FAVOR ASSOCIATED PRECIPITATION REMAINING
OVER OF S/E OF THE COASTAL WATERS...BUT WILL CONTINUE TO ASSESS.
ANOTHER COLD FRONT WILL APPROACH THE REGION THURSDAY...BUT THIS
FRONT WILL LIKELY STALL OVER THE SE INTO NEXT WEEKEND. ASSOCIATED
SURFACE/UPPER TROUGHING MAY SUPPORT A SLIGHTLY GREATER CHANCE FOR
DIURNAL THUNDERSTORMS DURING THE LATTER PORTION OF THE FORECAST
PERIOD.

&&

.AVIATION /19Z SATURDAY THROUGH THURSDAY/...
THE THREAT FOR THUNDERSTORMS REMAIN THE MAIN ISSUE FOR THE 18Z TAF
PERIOD FOR KCHS AND KSAV. INITIATED KCHS WITH VCSH WHILE INCLUDING A
TEMPO GROUP OF TSRA AS CONVECTION CONTINUE TO DEVELOP ACROSS THE
CHARLESTON AREA. DELAYED A CB GROUP FOR KSAV UNTIL AFTER 19Z...YET
EXPECT THUNDERSTORM CONVECTION TO INCREASE AND SPREAD ACROSS THE
AREA LATER TODAY. THUS WILL AMEND TAFS IF/WHEN NECESSARY ACCORDING
TO RADAR TRENDS.

WINDS WILL SLOWLY BACK MORE SOUTHERLY LATER THIS AFTERNOON AS THE
SEABREEZE TRIES TO PROGRESS INLAND. EXPECT WINDS AND SKY COVERAGE
TO DECREASE OVERNIGHT...AND WITH LINGERING LOW LEVEL MOISTURE FROM
AFTERNOON SHOWERS...CANNOT RULE OUT SOME PATCHY MVFR FOG EARLY
SUNDAY MORNING. YET WITH MODEL DISAGREEMENT AND LOW
POTENTIAL...WILL EXCLUDE FROM TAFS FOR NOW. A LOW STRATUS LAYER
COULD DEVELOP IN PLACE OF FOG IF WINDS REMAIN SLIGHTLY ELEVATED
OVERNIGHT. WILL REEVALUATE THIS AND PRECIP CHANCES FOR SUNDAY
AFTERNOON DURING THE NEXT TAF PERIOD.

EXTENDED AVIATION OUTLOOK...MVFR OR LOWER CONDITIONS ARE POSSIBLE
INTO SUNDAY MORNING IN ASSOCIATION WITH A PASSING COLD FRONT.
SCATTERED SHOWERS AND THUNDERSTORMS...WITH REDUCED CEILINGS AND
VISIBILITIES WILL BE POSSIBLE. OTHERWISE...VFR CONDITIONS ARE
EXPECTED TO PREVAIL.

&&

.MARINE...
CONTINUING LONG PERIOD SWELL FROM HURRICANE BILL WILL LAST THROUGH
EARLY SUNDAY MORNING BEFORE DIMINISHING OVER THE NEARSHORE WATERS.
HAVE MAINTAINED THE HIGH SURF ADVISORY GOING THROUGH 6 AM TO
ACCOUNT FOR 4 TO 6 FOOT BREAKERS ALONG THE COASTLINE.

6 FOOT SEAS IS ANTICIPATED TO REMAIN THROUGH LATE MORNING FOR THE
NEARSHORE WATERS AND THROUGH EARLY AFTERNOON FOR THE OFFSHORE
GEORGIA WATERS. THUS...WILL CONTINUE THE SMALL CRAFT ADVISORY.

SOUTHWESTERLY WINDS WILL INCREASE SHOULD REMAIN AROUND 10 TO 15
KNOTS ACROSS THE WATERS THROUGH SUNDAY WITH THE HIGHEST OCCURRING
SUNDAY AFTERNOON.

UNDER HIGH PRESSURE...WINDS/SEAS WILL REMAIN BELOW SMALL CRAFT
ADVISORY THROUGH THURSDAY.

RIP CURRENTS...LONG PERIOD SWELL CREATED BY HURRICANE BILL PRODUCED
RIP CURRENTS SATURDAY AND WILL CONTINUE TO CREATE VERY HAZARDOUS
CONDITIONS IN THE SURF ZONE SUNDAY. WILL AGAIN FORECAST A HIGH RISK
OF RIP CURRENTS SUNDAY. AN ELEVATED RISK FOR RIP CURRENTS MAY ALSO
PERSIST INTO MONDAY.

&&

.TIDES/COASTAL FLOODING...
DUE TO THE CONTINUED POTENTIAL FOR 5 FT BREAKERS IN THE SURF
ZONE...MAINTAINED THE ONGOING HIGH SURF ADVISORY THROUGH TONIGHT.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...HIGH SURF ADVISORY UNTIL 6 AM EDT SUNDAY FOR GAZ117-119-139-
     141.
SC...HIGH SURF ADVISORY UNTIL 6 AM EDT SUNDAY FOR SCZ048>051.
MARINE...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL NOON EDT SUNDAY
     FOR AMZ350-352.
     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 5 AM EDT SUNDAY
     FOR AMZ354.
     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 4 PM EDT SUNDAY
     FOR AMZ374.

&&

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1137 AM EDT SAT AUG 22 2009

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

0930 AM     RIP CURRENTS     2 E SEABROOK ISLAND     32.59N 80.13W
08/22/2009                   CHARLESTON         SC   COUNTY OFFICIAL

            3 RIP CURRENTS OCCURRED AT BEACHWALKER COUNTY PARK.

1010 AM     HIGH SURF        3 WSW FOLLY BEACH       32.64N 79.97W
08/22/2009                   CHARLESTON         SC   COUNTY OFFICIAL

            6 TO 7 FOOT BREAKERS WERE REPORTED AT FOLLY BEACH COUNTY
            PARK.

1116 AM     HIGH SURF        2 E SEABROOK ISLAND     32.59N 80.13W
08/22/2009                   CHARLESTON         SC   COUNTY OFFICIAL

            6 FOOT SURF WAS REPORTED AT BEACHWALKER COUNTY PARK.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1232 PM EDT SAT AUG 22 2009

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

1226 PM     HIGH SURF        FOLLY BEACH             32.66N 79.92W
08/22/2009                   CHARLESTON         SC   NWS EMPLOYEE

            5 FOOT BREAKERS REPORTED AT FOLLY BEACH COUNTY PARK.
            BEACH EROSION OF 1 TO 3 FOOT ESCARPMENT ALSO REPORTED.

&&

JHP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
259 PM EDT SAT AUG 22 2009

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

1130 AM     RIP CURRENTS     TYBEE ISLAND            32.00N 80.85W
08/22/2009                   CHATHAM            GA   COUNTY OFFICIAL

            6 TO 12 RIP CURRENTS SPOTTED BY LIFE GUARDS DURING THE
            MORNING. 9 WATER ASSISTS MADE. NO ONE REQUIRED MEDICAL
            TREATMENT.

1130 AM     HIGH SURF        TYBEE ISLAND            32.00N 80.85W
08/22/2009                   CHATHAM            GA   COUNTY OFFICIAL

            6 TO 8 FOOT BREAKERS REPORTED BE LIFEGUARDS.

0224 PM     RIP CURRENTS     FOLLY BEACH             32.66N 79.92W
08/22/2009                   CHARLESTON         SC   PUBLIC

            2 RIP CURRENTS SPOTTED NEAR THE FOLLY BEACH FISHING PIER.
            SWELL SIZE ESTIMATED AT 3 TO 4 FEET.

0230 PM     RIP CURRENTS     ISLE OF PALMS           32.79N 79.79W
08/22/2009                   CHARLESTON         SC   LAW ENFORCEMENT

            1 RECURRING RIP CURRENT BETWEEN 5TH AND 6TH AVENUE. SWELL
            SIZE ESTIMATED AT 2 TO 3 FEET.

&&

VB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
318 PM EDT SAT AUG 22 2009

SCZ045-050-222015-
BERKELEY-CHARLESTON-
318 PM EDT SAT AUG 22 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN CHARLESTON AND
POSSIBLY SOUTHEASTERN BERKELEY COUNTIES THROUGH 415 PM EDT...

AT 314 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING 1/2 INCH HAIL...AND GUSTY
WINDS OF 35 TO 45 MPH.  THIS STORM WAS LOCATED 7 MILES NORTHEAST OF
WHITEHALL TERRACE...OR ABOUT 16 MILES SOUTHWEST OF MCCLELLANVILLE...
MOVING SOUTHWEST AT 5 MPH.

AREAS IN AND AROUND AWENDAW...SMITH...CHARITY...WHITEHALL TERRACE...
CAINHOY...WANDO...WILL BE IMPACTED THROUGH 415 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF
OUTDOORS...STAY AWAY FROM ISOLATED TALL OBJECTS. IF INDOORS...STAY
AWAY FROM WINDOWS AND DOORS. AVOID USING PLUMBING AND ELECTRICAL
APPLIANCES UNLESS IT IS AN EMERGENCY.

THIS THUNDERSTORM IS ALSO PRODUCING VERY HEAVY RAIN ALONG HIGHWAY 17
NEAR AWENDAW...WHICH MAY FLOOD DITCHES AND LOW-LYING AREAS. DOPPLER
RADAR ESTIMATES THAT NEARLY 2.5 INCHES OF RAIN HAS FALLEN OVER THE
LAST HOUR OR TWO JUST SOUTH OF AWENDAW. REDUCE VEHICLE SPEED TO
LOWER THE RISK OF HYDROPLANING. DO NOT DRIVE INTO PLACES WHERE WATER
COVERS THE ROAD. SEEK AN ALTERNATE ROUTE.

PLEASE CONTACT THE NATIONAL WEATHER SERVICE IN CHARLESTON TOLL FREE
AT 1-888-383-2024 IF YOU OBSERVE SEVERE WEATHER SUCH AS HAIL...DOWNED
TREES...LIMBS AND POWER LINES.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
329 PM EDT SAT AUG 22 2009

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

0326 PM     HEAVY RAIN       7 SW AWENDAW            32.97N 79.70W
08/22/2009  E0.00 INCH       CHARLESTON         SC   PUBLIC

            WATER COVERING PORTIONS OF HIGHWAY 17 NEAR THE SEWEE
            VISITORS CENTER. THE HIGHWAY WAS STILL PASSABLE.

&&