Severe Thunderstorm Warning 37, NWS Charleston, SC

000 
WWUS52 KCHS 201907
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
307 PM EDT MON APR 20 2009

SCC015-019-029-035-201945-
/O.CON.KCHS.SV.W.0037.000000T0000Z-090420T1945Z/
BERKELEY SC-DORCHESTER SC-COLLETON SC-CHARLESTON SC-
307 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR WEST CENTRAL CHARLESTON...EASTERN COLLETON...SOUTHEASTERN
DORCHESTER AND SOUTHWESTERN BERKELEY COUNTIES...

AT 306 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF 
DOLLAR SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE 
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CANAAN TO CLUBHOUSE 
CROSSROADS TO PARKERS FERRY...OR ALONG A LINE EXTENDING FROM SLANDS 
BRIDGE TO 7 MILES SOUTHWEST OF SLANDS BRIDGE TO 16 MILES SOUTHWEST OF
SLANDS BRIDGE...MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL...DAMAGING
WINDS OF 58 MPH OR GREATER...DEADLY LIGHTNING AND VERY HEAVY RAIN. GO
INSIDE A STURDY SHELTER. MOVE TO AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

&&

LAT...LON 3277 8004 3267 8055 3285 8048 3303 8055
      3318 7999 3297 7996
TIME...MOT...LOC 1907Z 254DEG 33KT 3298 8031 3288 8030
          3276 8036

$$

000 
WWUS52 KCHS 201916
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
316 PM EDT MON APR 20 2009

SCC015-019-029-035-201945-
/O.CON.KCHS.SV.W.0037.000000T0000Z-090420T1945Z/
BERKELEY SC-DORCHESTER SC-COLLETON SC-CHARLESTON SC-
316 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR WEST CENTRAL CHARLESTON...EASTERN COLLETON...SOUTHEASTERN
DORCHESTER AND SOUTHWESTERN BERKELEY COUNTIES...

AT 315 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM GIVHANS TO COOKE CROSSROADS
TO CAPWELLS CROSSROADS...OR ALONG A LINE EXTENDING FROM PINEWOOD
PREPARATORY TO SLANDS BRIDGE TO 13 MILES SOUTHWEST OF ARCHDALE...
MOVING EAST AT 40 MPH.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT. WEATHER CONDITIONS WILL RAPIDLY DETERIORATE AS STORMS
APPROACH. SEEK SHELTER IN A STURDY BUILDING...MOVE TO AN INTERIOR
ROOM AND STAY AWAY FROM WINDOWS.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

&&

LAT...LON 3277 8004 3267 8055 3285 8048 3303 8055
      3318 7999 3297 7996
TIME...MOT...LOC 1916Z 254DEG 33KT 3304 8030 3290 8020
          3278 8026

$$

000 
WWUS52 KCHS 201925
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
325 PM EDT MON APR 20 2009

SCC029-201934-
/O.CAN.KCHS.SV.W.0037.000000T0000Z-090420T1945Z/
COLLETON SC-
325 PM EDT MON APR 20 2009

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN COLLETON COUNTY HAS
BEEN CANCELLED...

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT 
MONDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

LAT...LON 3280 8003 3275 8032 3291 8026 3308 8035
      3318 7999 3297 7996
TIME...MOT...LOC 1924Z 254DEG 33KT 3306 8021 3292 8012
          3280 8018

$$

SCC015-019-035-201945-
/O.CON.KCHS.SV.W.0037.000000T0000Z-090420T1945Z/
BERKELEY SC-DORCHESTER SC-CHARLESTON SC-
325 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR CENTRAL CHARLESTON...SOUTHEASTERN DORCHESTER AND SOUTHWESTERN
BERKELEY COUNTIES...

AT 323 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM JEDBURG
TO ARCHDALE TO RANTOWLES...OR ALONG A LINE EXTENDING FROM PINEWOOD
PREPARATORY TO ARCHDALE TO 9 MILES SOUTHWEST OF ARCHDALE...MOVING
EAST AT 40 MPH.

AT 315 PM EDT...TRAINED WEATHER SPOTTERS REPORTED QUARTER SIZED HAIL 
NEAR DELEMAR CROSSROADS

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM 
INCLUDE...ARCHDALE...CHARLESTON AIRPORT...COLLEGE PARK...GOOSE 
CREEK...HANAHAN...JEDBURG...KNIGHTSVILLE...LADSON...PINEWOOD 
PREPARATORY...SANGAREE...SHADOWMOSS...SLANDS BRIDGE AND SUMMERVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT 
MONDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

&&

LAT...LON 3280 8003 3275 8032 3291 8026 3308 8035
      3318 7999 3297 7996
TIME...MOT...LOC 1924Z 254DEG 33KT 3306 8021 3292 8012
          3280 8018

$$

000 
WWUS52 KCHS 201933
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
333 PM EDT MON APR 20 2009

SCC015-019-035-201945-
/O.CON.KCHS.SV.W.0037.000000T0000Z-090420T1945Z/
BERKELEY SC-DORCHESTER SC-CHARLESTON SC-
333 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR CENTRAL CHARLESTON...SOUTHEASTERN DORCHESTER AND SOUTHWESTERN
BERKELEY COUNTIES...

AT 332 PM EDT... A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING 
QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE 
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM JEDBURG TO 
NORTHWOODS MALL TO RED TOP...OR ALONG A LINE EXTENDING FROM PINEWOOD 
PREPARATORY TO GOOSE CREEK TO ARCHDALE...MOVING EAST AT 40 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
ARCHDALE...CHARLESTON AIRPORT...COLLEGE PARK...GOOSE CREEK...
HANAHAN...JEDBURG...KNIGHTSVILLE...LADSON...PINEWOOD PREPARATORY...
SANGAREE...SHADOWMOSS...SLANDS BRIDGE AND SUMMERVILLE.

NICKEL SIZED HAIL WAS REPORTED IN THE WHITEHALL SUBDIVISION AT 330 
PM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. MOVE INDOORS
IMMEDIATELY. IF THERE IS NO SAFE SHELTER AVAILABLE...STAY AWAY FROM
ISOLATED HIGH OBJECTS AND BODIES OF WATER. IF YOU CAN HEAR THUNDER...
YOU ARE WITHIN STRIKING DISTANCE.

TO REPORT SEVERE WEATHER SUCH AS HAIL...DOWNED TREES...LIMBS...AND
POWER LINES...PLEASE CONTACT THE CHARLESTON NATIONAL WEATHER SERVICE
TOLL FREE AT 1-888-383-2024 OR EMAIL YOUR REPORTS TO
CHS.SKYWARN@NOAA.GOV.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM EDT
MONDAY EVENING FOR SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

&&

LAT...LON 3280 8003 3275 8032 3288 8026 3295 8017
      3297 8029 3308 8035 3318 7999 3297 7996
TIME...MOT...LOC 1933Z 254DEG 33KT 3308 8020 3294 8003
          3283 8011

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
156 PM EDT MON APR 20 2009

.SYNOPSIS...
A COLD FRONT WILL APPROACH FROM THE WEST TODAY AND WILL MOVE
ACROSS THE AREA TONIGHT...FOLLOWED BY A REINFORCING COLD FRONT
TUESDAY NIGHT. HIGH PRESSURE WILL THEN BUILD OVER THE REGION AND
WILL PERSIST THROUGH THE UPCOMING WEEKEND.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
REGION REMAINS WITHIN A SLIGHT RISK FOR SEVERE THUNDERSTORMS TODAY.
MONDAY AFTERNOON...ISOLATED SHOWERS/THUNDERSTORMS WERE DEVELOPING
ALONG A MARINE/DEWPOINT BOUNDARY OVER THE FORECAST AREA.
MEANWHILE...A COLD FRONT WAS APPROACHING WESTERN COUNTIES OF THE
FORECAST AREA. HIGH TEMPERATURES IN THE UPPER 70S/LOWER 80S AWAY
FROM THE IMMEDIATE COAST AND DEWPOINTS ALONG/EAST OF THE MARINE
BOUNDARY IN THE LOWER TO MID 60S SUPPORTED SBCAPES AS HIGH AS
1500-2500 J/KG PER THE LATEST SPC MESOANALYSIS. COVERAGE/INTENSITY
OF THUNDERSTORMS MAY INCREASE WITHIN THIS UNSTABLE AIRMASS...AS
SYNOPTIC SCALE FORCING INCREASES AHEAD AN APPROACHING VORT
AXIS/WITHIN THE DEVELOPING RIGHT REAR QUADRANT OF A 100-120 KNOT
300-200 MB JET MAXIMUM EMERGING FROM THE NORTHERN GULF OF MEXICO
AND INTERACTS LOW LEVEL CONVERGENCE AHEAD OF THE SYNOPTIC COLD
COLD FRONT/IN THE VICINITY OF MESOSCALE BOUNDARIES.

MODEL KINEMATIC/THERMODYNAMIC PARAMETERS REMAIN QUITE IMPRESSIVE
FOR SEVERE WEATHER LATE THIS AFTERNOON AND THIS EVENING.
SPECIFICALLY...HEIGHT FALLS/SYNOPTIC FORCING...0-6 KM BULK SHEAR
EXCEEDING 50 KNOTS...SBCAPES 1500-2500 J/KG...700-500 MB WINDS
40-50 KNOTS...WET BULB ZERO HEIGHTS 8.5-10.5 KFT AND 500 MB COLD
ADVECTION ALL POINT TOWARD THE POTENTIAL FOR AT LEAST A FEW SEVERE
THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS. FURTHER...
ENHANCED HELICITY NEAR THE MARINE/DEWPOINT BOUNDARY COULD SUPPORT
ISOLATED SUPERCELLS WITH A ATTENDANT LOW TORNADO THREAT. ALL
TOLD...THE FAVORABLE COMBINATION OF PARAMETERS CONTINUES TO JUSTIFY
A MENTION OF LARGE HAIL AND DAMAGING WINDS WITHIN PUBLIC
FORECASTS. HOWEVER...UPSTREAM 12Z SOUNDINGS DEPICTED CONSIDERABLE
700 MB WARMING/DRYING. THUS...STRONGER THAN EXPECTED MID LEVEL
WARMING/CAPPING COULD LIMIT THE SCOPE OF THIS EVENT...AND
ACCORDINGLY LIMITED POPS TO CHANCE.

LAKE WINDS...LOW LEVEL WINDS 25-35 KT AND VIGOROUS MIXING WILL
CONTINUE TO SUPPORT SW WINDS 25 TO 30 KT AT TIMES ON LAKE MOULTRIE...
ESPECIALLY NEAR THE S/W SHORELINE. THUS...MAINTAINED THE ONGOING
LAKE WIND ADVISORY THROUGH 00Z.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM TUESDAY/...
THE COLD FRONT LOOKS TO PUSH OFFSHORE MON EVE WITH SOME CONVECTION
STILL ONGOING ALONG THE LEADING EDGE OF THE SFC FRONT AND UPPER
LEVEL SHORTWAVE. BEST CHCS WILL BE N OF THE SAVANNAH RIVER AS
PRECIP WILL HAVE A SW TO NE TRAJECTORY SO HAVE HIGHLIGHTED
GREATEST POPS NE THEN TRENDING DOWN GOING INTO GA. PRECIP WILL
GRADUALLY END AS THE FRONT MOVES OFFSHORE...BUT THE UPPER LEVEL
LOW WILL DROP FURTHER SE INTO THE AREA LATE MON NIGHT INTO EARLY
TUE. SOME BUBBLE RIDGING AHEAD OF THE MEAN LONGWAVE TROUGH SHOULD
ALLOW FOR AT LEAST PARTIAL CLEARING...PROMOTING MIN TEMPS DROPPING
TO THE LOWER 50S AWAY FROM THE COAST AND UPR 50S NEAR THE SHORES.

&&

.LONG TERM /TUESDAY THROUGH SUNDAY/...
THE LARGE UPPER LOW OVER THE ERN CONUS WILL PUSH A SECONDARY
CDFNT TO THE AREA LATE TUE INTO TUE EVE. A DEEPER SWATH OF
MOISTURE ACCOMPANYING THIS FRONT MAY BE ENOUGH TO PRODUCE SOME
LOW-TOPPED ISOLD SHOWERS DURING THIS TIME. GIVEN THE PERSISTENT
NATURE OF THE GFS AND NAM DEPICTING THIS IDEA /WHILE BOTH THE
GEM AND NOGAPS HAVE MAINTAINED DRY FCSTS/...WILL MAINTAIN SLGT CHC
MENTION OF SHWRS. AM NOT EXPECTING TSTMS BUT WITH STRONG MID-
UPPER LEVEL WINDS ASSOCIATED WITH THIS SYSTEM WILL NEAR AND OVER
THE REGION...IT IS NOT UNREASONABLE THAT SOME SHOWERS COULD
PRODUCE GUSTY WINDS. UNCERTAINTY IS TOO HIGH TO DELINEATE SEVERE
POTENTIAL ATTM ALTHOUGH THE SPC HAS PAINTED IN A /SEE TEXT/ AREA
OVER SRN GA.

DRIER AIR WILL THEN MOVE INTO THE AREA LATE TUE NIGHT INTO WED ON
THE LEADING EDGE OF EXTENSIVE HIGH PRESSURE. THIS HIGH PRESSURE
WILL SETTLE OVER THE SOUTHEAST STATES FOR THE LATTER HALF OF THE
WEEK...PROMOTING DRY WX FOR THE MAJORITY OF THE TIME. THE ONLY
QUESTIONS OF PRECIP LOOK TO COME FOR THE WEEKEND AS THE HIGH
PRESSURE AREA CENTERS ITSELF OVER THE ATLC...RESTORING AN ONSHORE
FLOW WHILE A RIDGE DEVELOPS W OF THE AREA. THIS LOOKS TO PROMOTE
GOOD SEABREEZE DEVELOPMENT BY THE END OF THE WEEK AND THE WEEKEND
AND COULD ALLOW FOR POP-UP TSTMS ALONG THE SEABREEZE SAT AND SUN.
GIVEN HIGH UNCERTAINTY IN THE TIMING/LOCATION OF SUCH
CONVECTION...WILL MAINTAIN SILENT 10 POPS FOR THE WEEKEND.

A BRIEF SHOT OF COOLER AIR CAN BE EXPECTED AS HIGH PRESSURE
SETTLES IN...BRINGING MAX TEMPS TO THE LOWER 70S AND MIN TEMPS TO
THE MID-UPR 40S FOR THE MIDDLE PART OF THE WEEK. HOWEVER...BY THE
END OF THE WEEK AND THE WEEKEND...MAX TEMPS WILL RISE TO THE LOWER
80S WITH MIN TEMPS IN THE MID-UPR 50S.

&&

.AVIATION /18Z MONDAY THROUGH FRIDAY/...
FORECAST ATTENTION FOCUSES ON CONVECTIVE TRENDS UNTIL 3-4Z.
AN UNSTABLE AIRMASS AND A SURFACE MARINE BOUNDARY/APPROACHING
UPPER TROUGH AND SURFACE COLD FRONT WILL CREATE CONDITIONS
FAVORABLE FOR SCATTERED SHOWERS/THUNDERSTORMS IN THE VICINITY OF
BOTH TERMINALS THROUGH THIS EVENING. ASIDE FROM BRIEF SHOWERS
POISED TO IMPACT KCHS EARLY...POTENTIAL COVERAGE REMAINS
INSUFFICIENT TO JUSTIFY ANYTHING MORE THAN VCSH/VCTS AND
ASSOCIATED CBS UNTIL THE COLD FRONT PASSES AFTER 3-4Z.
AMENDMENTS APPEAR ALL BUT CERTAIN AS NEAR TERM CONVECTIVE TRENDS
COME INTO FOCUS.

IN THE WAKE OF COLD FROPA OVERNIGHT INTO EARLY TUESDAY...LOW LEVEL
MOISTURE MAY REMAIN SUFFICIENT TO PRODUCE MVFR OR LOWER CEILINGS
AND/OR VISIBILITIES. HOWEVER...ADVECTION OF DRIER AIR MAY OFFSET
THIS TREND...THUS OPTED NOT TO INCLUDE ANY SUB-VFR CONDITIONS
OVERNIGHT.

VFR CONDITIONS WILL PERSIST THROUGH 18Z TUESDAY. ISOLATED
SHOWERS/THUNDERSTORMS WITH BRIEF MVFR CONDITIONS MAY PUSH INTO THE
REGION LATER TUESDAY AFTERNOON INTO TUESDAY EVENING.

EXTENDED AVIATION OUTLOOK...MOSTLY VFR CONDITIONS TO PREVAIL
THROUGH FRIDAY...ALTHOUGH LATE NIGHT/EARLY MORNING FOG CHANCES MAY
RETURN BY LATE IN THE WEEK.

&&

.MARINE...
THE COMBINATION OF A 30-40 KT LOW LEVEL JET ALONG WITH A TIGHT
PRESSURE GRADIENT RESULTING FROM A LARGE PRESSURE DIFFERENCE BETWEEN
ATLANTIC HIGH PRESSURE AND DEEP LOW PRESSURE IN THE GREAT LAKES
REGION WILL PRODUCE STRENGTHENING S-SW WINDS AND BUILDING SEAS TODAY
ACROSS THE MARINE COMMUNITY. THIS WILL RESULT IN SOLID SCA
CONDITIONS FOR MOST OF THE MARINE AREA WITH WINDS AS HIGH AS 20-25
KT AND GUSTY...WHILE SEAS BUILD AS HIGH AS 6 OR 7 FT. THE EXCEPTION
WILL BE ACROSS AMZ354...WHERE WE WILL CAP WINDS AND SEAS AT 20 KT
AND 5 FT...RESPECTIVELY. HOWEVER...DAYTIME FORECAST STAFF WILL NEED
TO KEEP A CLOSE WATCH FOR FREQUENT GUSTS THAT COULD APPROACH 25
KT...WHICH WOULD IN TURN ALLOW FOR SEAS TO CLIMB TO 6 FT. THUS WE
WILL CONTINUE TO CAREFULLY MONITOR FOR AN SCA OVER THE NEARSHORE GA
WATERS TODAY.

THE DEPARTING LOW LEVEL JET AND THE PASSAGE OF A COLD FRONT EARLY
TONIGHT WILL ALLOW FOR SCA/S TO END BY 03Z ACROSS ALL BUT THE OUTER
GA WATERS...WHERE WE HAVE THE SCA THROUGH LATE TONIGHT.

HIGH PRESSURE WILL BUILD ACROSS THE GULF OF MEXICO ON TUESDAY...WITH
A STRENGTHENING PRESSURE GRADIENT TO REDEVELOP AS DEEP LOW PRESSURE
IS STILL FOUND OVER THE GREAT LAKES. HOWEVER...WINDS LOOK TO BE NO
HIGHER THAN 15 OR 20 KT...AND WITH AN ONSHORE FETCH THE SEAS WILL
REMAIN AT 5 FT OR LESS.

A SECOND COLD FRONT WILL QUICKLY PUSH THROUGH THE AREA TUESDAY
NIGHT...AND THE RESULTING COOL AIR ADVECTION AND INCREASING LOW
LEVEL WIND FIELDS WILL ALLOW FOR MARGINAL SCA CONDITIONS ACROSS AT
LEAST AMZ350-374.

WINDS AND SEAS WILL BE SLOW IN COMING DOWN ON WEDNESDAY...BUT MUCH
MORE TRANQUIL CONDITIONS WILL FINALLY RETURN BY THURSDAY AND FRIDAY
AS HIGH PRESSURE SETTLES ACROSS THE REGION.

RIP CURRENTS...ALTHOUGH THERE WILL BE LITTLE IF ANY SWELL ALONG THE
BEACHES TODAY...STRENGTHENING SOUTH TO SW WINDS WILL REACH AS HIGH
AS 20-30 MPH ALONG THE CHARLESTON COUNTY COAST TODAY. THESE WINDS
WILL RESULT IN A STRONGER LONG SHORE CURRENT THAN IS TYPICAL...AND
THAT ALONG WITH THE STRONG WINDS WILL RESULT IN A MODERATE RISK OF
RIP CURRENTS FOR AREAS NORTH OF EDISTO BEACH. FURTHER SOUTH THE
WINDS AND ASSOCIATED LONG SHORE CURRENT WILL NOT BE QUITE AS
STRONG...THUS WE HAVE OPTED TO CARRY ONLY A LOW RISK ELSEWHERE.
HOWEVER...SHOULD WINDS REACH HIGHER THAN NOW ANTICIPATED THAN WE
WOULD NEED TO CONSIDER A MODERATE RISK. BEACH GOERS SHOULD BE AWARE
THAT EVEN DURING LOW RISK THAT RIP CURRENTS CAN STILL OCCUR.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
SC...LAKE WIND ADVISORY UNTIL 8 PM EDT THIS EVENING FOR SCZ045.
MARINE...SMALL CRAFT ADVISORY UNTIL 11 PM EDT THIS EVENING FOR AMZ330-
     350-352.
     SMALL CRAFT ADVISORY UNTIL 6 AM EDT TUESDAY FOR AMZ374.

&&

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHARLESTON SC
1014 AM EDT MON APR 20 2009

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>044-047>049-051-211000-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND JASPER-BEAUFORT-
COASTAL COLLETON-COASTAL JASPER-
1014 AM EDT MON APR 20 2009

...SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

SEVERE THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AHEAD
OF AN APPROACHING COLD FRONT THIS AFTERNOON INTO THIS EVENING.
A FEW OF THESE THUNDERSTORMS MAY BECOME SEVERE...CAPABLE OF
PRODUCING LARGE HAIL TO AT LEAST QUARTER SIZE AND DAMAGING WINDS
TO 60 MPH. ANY SEVERE THUNDERSTORMS WILL OCCUR MAINLY BETWEEN
300 PM AND 1100 PM.

YOU ARE URGED TO REMAIN ALERT FOR ADDITIONAL INFORMATION
REGARDING THIS POTENTIALLY HAZARDOUS SITUATION. CHECK THE LATEST
FORECASTS ON NOAA WEATHER RADIO ALL HAZARDS...TV...OR YOUR LOCAL
NEWS SOURCE. INFORMATION IS ALSO AVAILABLE ON THE INTERNET AT
WEATHER.GOV/CHS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

SCZ045-211000-
BERKELEY-
1014 AM EDT MON APR 20 2009

...SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...
...LAKE WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR LAKE
MOULTRIE...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST 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.

   LAKE WIND ADVISORY.

SEVERE THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AHEAD
OF AN APPROACHING COLD FRONT THIS AFTERNOON INTO THIS EVENING.
A FEW OF THESE THUNDERSTORMS MAY BECOME SEVERE...CAPABLE OF
PRODUCING LARGE HAIL TO AT LEAST QUARTER SIZE AND DAMAGING WINDS
TO 60 MPH. ANY SEVERE THUNDERSTORMS WILL OCCUR MAINLY BETWEEN
300 PM AND 1100 PM.

YOU ARE URGED TO REMAIN ALERT FOR ADDITIONAL INFORMATION
REGARDING THIS POTENTIALLY HAZARDOUS SITUATION. CHECK THE LATEST
FORECASTS ON NOAA WEATHER RADIO ALL HAZARDS...TV...OR YOUR LOCAL
NEWS SOURCE. INFORMATION IS ALSO AVAILABLE ON THE INTERNET AT
WEATHER.GOV/CHS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

SCZ050-211000-
CHARLESTON-
1014 AM EDT MON APR 20 2009

...SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING...
...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST 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 FOR RIP CURRENTS.

SEVERE THUNDERSTORMS...SCATTERED THUNDERSTORMS WILL DEVELOP AHEAD
OF AN APPROACHING COLD FRONT THIS AFTERNOON INTO THIS EVENING.
A FEW OF THESE THUNDERSTORMS MAY BECOME SEVERE...CAPABLE OF
PRODUCING LARGE HAIL TO AT LEAST QUARTER SIZE AND DAMAGING WINDS
TO 60 MPH. ANY SEVERE THUNDERSTORMS WILL OCCUR MAINLY BETWEEN
300 PM AND 1100 PM.

YOU ARE URGED TO REMAIN ALERT FOR ADDITIONAL INFORMATION
REGARDING THIS POTENTIALLY HAZARDOUS SITUATION. CHECK THE LATEST
FORECASTS ON NOAA WEATHER RADIO ALL HAZARDS...TV...OR YOUR LOCAL
NEWS SOURCE. INFORMATION IS ALSO AVAILABLE ON THE INTERNET AT
WEATHER.GOV/CHS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
135 PM EDT MON APR 20 2009

GAZ088-101-SCZ042-043-047-048-201815-
BEAUFORT-EFFINGHAM-HAMPTON-INLAND COLLETON-INLAND JASPER-SCREVEN-
135 PM EDT MON APR 20 2009

...A STRONG THUNDERSTORM WILL IMPACT NORTHERN JASPER...NORTH CENTRAL
BEAUFORT...CENTRAL COLLETON...SOUTHERN HAMPTON...EXTREME SOUTHEASTERN
SCREVEN AND NORTH CENTRAL EFFINGHAM COUNTIES THROUGH 215 PM EDT...

AT 134 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM CAPABLE OF PRODUCING PEA SIZE HAIL...AND GUSTY WINDS
OF 35 TO 45 MPH.  THIS STORM WAS LOCATED NEAR COSBY...OR ABOUT 14
MILES NORTH OF SPRINGFIELD...MOVING NORTHEAST AT 35 MPH.

AREAS IN AND AROUND CLYO...COOSAWHATCHIE...CUMMINGS...EARLY BRANCH...
FURMAN...GARNETT...GILLISONVILLE...GRAYS...MCPHERSONVILLE...
PINELAND...POCOTALIGO...ROBERTVILLE...SCOTIA...TARBORO AND YEMASSEE
WILL BE IMPACTED THROUGH 215 PM EDT.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
212 PM EDT MON APR 20 2009

SCZ042-043-047>049-201900-
BEAUFORT-COASTAL COLLETON-HAMPTON-INLAND COLLETON-INLAND JASPER-
212 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN JASPER...NORTH
CENTRAL BEAUFORT...CENTRAL COLLETON AND EAST CENTRAL HAMPTON COUNTIES
THROUGH 300 PM EDT...

AT 211 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF  THUNDERSTORMS CAPABLE OF PRODUCING PEA SIZE HAIL...AND
GUSTY WINDS OF 35 TO 45 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM EARLY BRANCH TO GILMANIA...OR ALONG A LINE EXTENDING
FROM 9 MILES NORTH OF YEMASSEE TO 8 MILES SOUTHWEST OF
YEMASSEE...MOVING EAST AT 35 MPH.

AREAS IN AND AROUND COTTAGEVILLE...EARLY BRANCH...GREEN POND...
HENDERSONVILLE...MCPHERSONVILLE...POCOTALIGO...RITTER...ROUND O...
WALTERBORO...WHITE HALL AND YEMASSEE WILL BE IMPACTED THROUGH 300 PM
EDT.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
238 PM EDT MON APR 20 2009

GAZ101-SCZ047-051-201930-
COASTAL JASPER-EFFINGHAM-INLAND JASPER-
238 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHERN JASPER AND NORTHERN
EFFINGHAM COUNTIES THROUGH 330 PM EDT...

AT 238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA SIZE HAIL...AND STRONG
WINDS OF 40 TO 50 MPH.  THIS STORM WAS LOCATED NEAR SPRINGFIELD...
MOVING NORTHEAST AT 30 MPH.

AREAS IN AND AROUND CLYO...EBENEZER...GUYTON...SHAWNEE...
SPRINGFIELD...STILLWELL...COOSAWHATCHIE...GILLISONVILLE...
GRAHAMVILLE...GRAYS...OLD HOUSE...PINELAND...RIDGELAND...
ROBERTVILLE...SWITZERLAND...TARBORO AND TILLMAN WILL BE IMPACTED
THROUGH 330 PM EDT.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
245 PM EDT MON APR 20 2009

SCZ044-045-201915-
BERKELEY-DORCHESTER-
245 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT CENTRAL DORCHESTER AND CENTRAL
BERKELEY COUNTIES THROUGH 315 PM EDT...

AT 244 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
DEVELOPING THUNDERSTORM CAPABLE OF PRODUCING PEA SIZE HAIL...AND
GUSTY WINDS OF 35 TO 45 MPH.  THIS STORM WAS LOCATED NEAR
GIVHANS...OR ABOUT OVER PINEWOOD PREPARATORY...MOVING NORTHEAST AT
30 MPH.

AREAS IN AND AROUND GIVHANS...JEDBURG...KNIGHTSVILLE...MONCKS
CORNER...PINEWOOD PREPARATORY...PINOPOLIS...SANGAREE...SOUTHERN LAKE
MOULTRIE AND SUMMERVILLE WILL BE IMPACTED THROUGH 315 PM EDT.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

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.

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
255 PM EDT MON APR 20 2009

GAZ114-137-138-201945-
INLAND LIBERTY-LONG-TATTNALL-
255 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN LIBERTY...SOUTHERN
TATTNALL AND NORTHWESTERN LONG COUNTIES THROUGH 345 PM EDT...

AT 255 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA SIZE HAIL...AND STRONG
WINDS OF 40 TO 50 MPH.  THIS STORM WAS LOCATED 8 MILES SOUTHWEST OF
NOBLE...OR ABOUT 9 MILES NORTHEAST OF SURRENCY...MOVING NORTHEAST AT
35 MPH.

AREAS IN AND AROUND DONALD...FLEMINGTON...FORT STEWART...
GLENNVILLE...GUM BRANCH AND HINESVILLE WILL BE IMPACTED THROUGH 345
PM EDT.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

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.