Severe Thunderstorm Warning 39, NWS Charleston, SC

000 
WWUS52 KCHS 202059
SVSCHS

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

SCC015-019-202130-
/O.CON.KCHS.SV.W.0039.000000T0000Z-090420T2130Z/
BERKELEY SC-CHARLESTON SC-
459 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR CENTRAL CHARLESTON AND SOUTHEASTERN BERKELEY COUNTIES...

AT 457 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR RED BANK LANDING...OR ABOUT 7 MILES SOUTHEAST OF GOOSE
CREEK...MOVING NORTHEAST AT 30 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AWENDAW...
CAINHOY...CHARLESTON AIRPORT...CHARLESTON...DANIEL ISLAND...GOOSE
CREEK...HANAHAN...HUGER...JOHNS ISLAND...MOUNT PLEASANT...NORTH
CHARLESTON...SHADOWMOSS...WANDO AND WEST ASHLEY.

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.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD ROADS...DITCHES AND LOW-LYING AREAS. AVOID FLOOD PRONE AREAS
AND DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD.

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.

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.

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.

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.

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 3299 7950 3303 7952 3300 7958 3299 7953
      3296 7955 3295 7956 3295 7957 3299 7958
      3295 7961 3294 7956 3291 7957 3284 7970
      3272 8008 3287 8017 3290 8009 3295 8011
      3325 7961 3300 7942
TIME...MOT...LOC 2059Z 243DEG 28KT 3292 7992

$$

000 
WWUS52 KCHS 202103
SVSCHS

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

SCC015-019-202130-
/O.CON.KCHS.SV.W.0039.000000T0000Z-090420T2130Z/
BERKELEY SC-CHARLESTON SC-
503 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR CENTRAL CHARLESTON AND SOUTHEASTERN BERKELEY COUNTIES...

AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR RED BANK LANDING...OR ABOUT 8 MILES SOUTHEAST OF GOOSE
CREEK...MOVING NORTHEAST AT 30 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AWENDAW...
CAINHOY...CHARLESTON AIRPORT...CHARLESTON...DANIEL ISLAND...GOOSE
CREEK...HANAHAN...HUGER...JOHNS ISLAND...MOUNT PLEASANT...NORTH
CHARLESTON...SHADOWMOSS...WANDO AND WEST ASHLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD ROADS...DITCHES AND LOW-LYING AREAS. AVOID FLOOD PRONE AREAS
AND DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD.

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 SOUTH CAROLINA.

&&

LAT...LON 3299 7950 3303 7952 3300 7958 3299 7953
      3296 7955 3295 7956 3295 7957 3299 7958
      3295 7961 3294 7956 3291 7957 3284 7970
      3272 8008 3287 8017 3290 8009 3295 8011
      3325 7961 3300 7942
TIME...MOT...LOC 2102Z 243DEG 28KT 3293 7990

$$

000 
WWUS52 KCHS 202118
SVSCHS

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

SCC015-019-202130-
/O.CON.KCHS.SV.W.0039.000000T0000Z-090420T2130Z/
BERKELEY SC-CHARLESTON SC-
518 PM EDT MON APR 20 2009

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR CENTRAL CHARLESTON AND SOUTHEASTERN BERKELEY COUNTIES...

AT 516 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR WANDO...OR ABOUT 14 MILES EAST OF GOOSE CREEK...MOVING
NORTHEAST AT 30 MPH.

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AWENDAW...
CAINHOY...DANIEL ISLAND...HUGER...MOUNT PLEASANT AND WANDO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS THUNDERSTORM IS CAPABLE OF PRODUCING VERY HEAVY RAIN...WHICH MAY
FLOOD ROADS...DITCHES AND LOW-LYING AREAS. AVOID FLOOD PRONE AREAS
AND DO NOT DRIVE INTO PLACES WHERE WATER COVERS THE ROAD.

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 SOUTH CAROLINA.

&&

LAT...LON 3299 7950 3303 7952 3300 7958 3299 7953
      3296 7955 3295 7956 3295 7957 3299 7958
      3295 7961 3294 7956 3291 7957 3280 7983
      3278 7990 3301 8000 3325 7961 3300 7942
TIME...MOT...LOC 2117Z 243DEG 28KT 3298 7978

$$

000 
WWUS52 KCHS 202131
SVSCHS

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

SCC015-019-202140-
/O.EXP.KCHS.SV.W.0039.000000T0000Z-090420T2130Z/
BERKELEY SC-CHARLESTON SC-
531 PM EDT MON APR 20 2009

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHARLESTON AND
SOUTHEASTERN BERKELEY COUNTIES WILL EXPIRE AT 530 PM EDT...

AT 530 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM WHICH PROMPTED
THE WARNING HAD WEAKENED...THUS THE SEVERE THUNDERSTORM WARNING HAS
BEEN ALLOWED TO EXPIRE.

ALTHOUGH THE SEVERE THUNDERSTORM WARNING IS NO LONGER IN 
EFFECT...THIS THUNDERSTORM IS STILL CAPABLE OF PRODUCING GUSTY WINDS 
TO 50 MPH...SMALL HAIL...FREQUENT LIGHTNING AND VERY HEAVY RAINFALL
BETWEEN AWENDAW AND MCLELLANVILLE UNTIL 6 PM EDT. THE SAFEST COURSE 
OF ACTION IS TO REMAIN INDOORS UNTIL THE STORMS HAVE PASSED.

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 SOUTH CAROLINA.

LAT...LON 3299 7950 3303 7952 3300 7958 3299 7953
      3296 7955 3295 7956 3295 7957 3299 7958
      3295 7961 3294 7956 3291 7957 3280 7983
      3278 7990 3301 8000 3325 7961 3300 7942
TIME...MOT...LOC 2130Z 243DEG 28KT 3302 7968

$$

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

.SYNOPSIS...
A COLD FRONT WILL CROSS 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 AND INTO EARLY NEXT WEEK WITH NO SIGNIFICANT RAIN CHANCES
EXPECTED.

&&

.NEAR TERM /UNTIL 6 AM TUESDAY MORNING/...
SEVERE THUNDERSTORM WATCH 179 HAS BEEN ISSUED FOR ALL BUT FAR
INLAND COUNTIES...WHERE DEWPOINTS HAD DECREASED INTO THE
50S...UNTIL 10 PM EDT.

LATE MONDAY AFTERNOON...ISOLATED THUNDERSTORMS CONTINUED TO
DEVELOP AND TRACK NE ALONG A MARINE/DEWPOINT BOUNDARY OVER THE
FORECAST AREA. MEANWHILE...A COLD FRONT WAS APPROACHING
WESTERN/INLAND COUNTIES OF THE FORECAST AREA. 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
CONTINUED TO SUPPORT SBCAPES AS HIGH AS 2000-3000 J/KG PER THE
LATEST SPC MESOANALYSIS...MEASURED JUST OVER 2100 J/KG BY THE
SPECIAL 18Z SOUNDING. COVERAGE/INTENSITY OF THUNDERSTORMS SHOULD
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.

KINEMATIC/THERMODYNAMIC PARAMETERS MEASURED BY THE 18Z KCHS RAOB
REMAIN QUITE IMPRESSIVE FOR SEVERE WEATHER...MAINLY FOR VERY LARGE
HAIL AND DAMAGING WIND GUSTS...INTO THIS EVENING. SPECIFICALLY...THE
SOUNDING REVEALED 0-6 KM BULK SHEAR APPROACHING 55 KNOTS...LIFTED
INDICES EXCEEDING -6...700-500 MB WINDS 45-60 KNOTS...IDEAL WET
BULB ZERO HEIGHTS JUST OVER 9 KFT AND 500 MB TEMPS ALREADY -15C
ADVECTION ALL POINT TOWARD THE POTENTIAL FOR AT LEAST A FEW SEVERE
THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS. DEEP LAYER
SYNOPTIC SCALE HEIGHT FALLS/FORCING AHEAD OF THE APPROACHING COLD
FRONT WILL ONLY SERVE TO ENHANCE THE SEVERE POTENTIAL INTO THIS
EVENING. 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 THROUGH THIS EVENING. DRY AIR AND
ASSOCIATED WARMING/CAPPING AT 700 MB AND DIURNAL STABILIZATION
THIS EVENING MAY LIMIT THE SCOPE OF THIS EVENING...THUS HELD POPS
NO HIGHER THAN 50 PERCENT ACROSS THE REGION. IF COVERAGE OF
CONVECTION INCREASES...UPDATES MAY BE REQUIRED THIS EVENING.

LAKE WINDS...UNTIL THE COLD FRONT PUSHES INTO THE REGION THIS
EVENING...SW WINDS WILL CONTINUE TO GUST TO AT LEAST 225 KNOTS ON
LAKE MOULTRIE. THUS...MAINTAINED THE ONGOING LAKE WIND ADVISORY
UNTIL 8 PM.

&&

.SHORT TERM /6 AM TUESDAY MORNING THROUGH 6 PM TUESDAY/...
IN THE WAKE OF INITIAL COLD FROPA...TUESDAY WILL START DRY ACROSS
THE REGION. THEN...A VIGOROUS SHORTWAVE RACING SE INTO THE LOWER
OHIO VALLEY MONDAY AFTERNOON WILL DIG THROUGH THE LONGWAVE TROUGH
POSITION AND WILL APPROACH THE REGION TUESDAY AFTERNOON. AHEAD OF
THIS FEATURE AND THE ASSOCIATED SECONDARY SURFACE COLD FRONT...12Z
MODELS DEPICT DESTABILIZATION DURING THE 18-21Z TIME FRAME. DESPITE
SURFACE DEWPOINTS IN THE MID 40S TO LOWER 50S...500 MB TEMPERATURES
FALLING TOWARD -18C TO -20C WILL SUPPORT DECREASING LIFTED
INDICES...AROUND ZERO PER THE 12Z GFS AND AS LOW AS -3 ALONG THE SC
COAST PER THE 12Z NAM. WHILE THE RELATIVELY DRY AIRMASS PREVENTS
ANYTHING HIGHER THAN SLIGHT CHANCE POPS...SYNOPTIC
FORCING/DESTABILIZATION AHEAD OF THE SHORTWAVE JUSTIFIES A MENTION
OF THUNDERSTORMS AFTER 18Z ACROSS N/W COUNTIES.

&&

.LONG TERM /TUESDAY NIGHT THROUGH MONDAY/...
FAIRLY GOOD MEDIUM RANGE MODEL CONSENSUS THIS PERIOD LEADS TO
HIGHER THAN NORMAL FORECAST CONFIDENCE.

TUESDAY NIGHT THROUGH THURSDAY NIGHT...RAIN CHANCES COME TO AN END
BY AROUND MIDNIGHT TUE NIGHT AS A SECONDARY COLD FRONT PUSHES
OFFSHORE IN ACCORDANCE WITH THE UPPER TROUGH AXIS. EXPECT HIGH
PRESSURE AT THE SURFACE AND ALOFT TO THEN MAINTAIN DRY BUT
UNSEASONABLY COOL WX ACROSS THE AREA THROUGH THU NIGHT.

FRIDAY THROUGH MONDAY...EXPECT A MODERATING TREND IN TEMPS/DEWPOINTS
THROUGH THE PERIOD AS THE SURFACE HIGH PRESSURE SYSTEM SHIFTS
OFFSHORE. NO SIGNIFICANT CHANCES FOR RAIN THOUGH WITH HIGH PRESSURE
ALOFT...ALTHOUGH IF UPPER HEIGHTS END UP BEING ON THE LOWER SIDE AS
SUGGESTED BY THE 12Z GFS...WE MAY SEE SOME SHOWERS/TSTMS FRI AFTN.
HOWEVER...PREFER TO MAINTAIN A DRY FORECAST FOR NOW.

&&

.AVIATION /19Z MONDAY THROUGH SATURDAY/...
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...WITH SOME
THUNDERSTORMS PRODUCING STRONG WINDS AND LARGE HAIL...IN THE
VICINITY OF BOTH TERMINALS UNTIL AFTER 3Z. 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...
WILL MAINTAIN ONGOING SMALL CRAFT ADVISORIES FOR ALL MARINE ZONES
EXCEPT AMZ354...THROUGH THIS EVENING ACROSS NEARSHORE WATERS AND
THROUGH THE NIGHT ACROSS THE GA WATERS BEYOND 20 NM...TO ACCOUNT FOR
GUSTY S/SW WINDS AND ELEVATED SEAS IN ADVANCE OF AN APPROACHING COLD
FRONT. IN THE WAKE OF COLD FROPA TONIGHT...WINDS WILL SHIFT TO THE
W/WNW AND WILL DIMINISH BELOW SCA THRESHOLDS...ALLOWING SEAS TO
SUBSIDE ALL AREAS. AHEAD OF ANOTHER COLD FRONT TUESDAY...WINDS WILL
BACK TOWARD THE SW AND WILL INCREASE...ESPECIALLY DURING THE
AFTERNOON. EVEN SO...12Z GUIDANCE SUGGESTS THAT WINDS/SEAS WILL
REMAIN BELOW SCA THRESHOLDS ALL AREAS TUESDAY...BUT WILL CONTINUE TO
ASSESS THE POTENTIAL FOR SCA CRITERIA WIND GUSTS WITHIN THE MIXED
ENVIRONMENT AROUND CHARLESTON HARBOR TUESDAY AFTERNOON.

TUESDAY NIGHT THROUGH SATURDAY...A SECONDARY COLD FRONT WILL PUSH
THROUGH THE AREA TUE 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 BEGIN TO COME DOWN ON WED WITH MUCH MORE
TRANQUIL CONDITIONS EXPECTED THROUGH SAT AS HIGH PRES SETTLES
ACROSS THE REGION.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...SEVERE THUNDERSTORM WATCH UNTIL 10 PM EDT THIS EVENING FOR
     GAZ101-116>119-137>141.
SC...SEVERE THUNDERSTORM WATCH UNTIL 10 PM EDT THIS EVENING FOR
     SCZ042>045-047>051.
     LAKE WIND ADVISORY UNTIL 8 PM EDT THIS EVENING FOR SCZ045.
MARINE...SEVERE THUNDERSTORM WATCH UNTIL 10 PM EDT THIS EVENING FOR
     AMZ330-350-352-354.
     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
337 PM EDT MON APR 20 2009

AMZ374-GAZ087-088-099-100-114-115-SCZ040-211000-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-TATTNALL-EVANS-ALLENDALE-
337 PM EDT MON APR 20 2009

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

.DAY ONE...THIS AFTERNOON 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...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

AMZ330-350-352-354-GAZ101-116>119-137>141-SCZ042>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-EFFINGHAM-INLAND BRYAN-
COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-INLAND LIBERTY-
COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-HAMPTON-
INLAND COLLETON-DORCHESTER-INLAND JASPER-BEAUFORT-COASTAL COLLETON-
COASTAL JASPER-
337 PM EDT MON APR 20 2009

...SEVERE THUNDERSTORM WATCH 179 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

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...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

SCZ045-211000-
BERKELEY-
337 PM EDT MON APR 20 2009

...LAKE WIND ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING FOR LAKE
MOULTRIE...
...SEVERE THUNDERSTORM WATCH 179 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON 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 THUNDERSTORM WATCH.

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...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

SCZ050-211000-
CHARLESTON-
337 PM EDT MON APR 20 2009

...MODERATE RISK FOR RIP CURRENTS IN EFFECT UNTIL 8 PM EDT THIS
EVENING...
...SEVERE THUNDERSTORM WATCH 179 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON 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 THUNDERSTORM WATCH.

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...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
334 PM EDT MON APR 20 2009

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

0328 PM     HAIL             NORTH CHARLESTON        32.85N 79.97W
04/20/2009  M0.88 INCH       CHARLESTON         SC   EMERGENCY MNGR

            NICKEL HAIL AT WHITE HALL SUBDIVISION.

&&

RJB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
337 PM EDT MON APR 20 2009

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

0334 PM     HAIL             NORTH CHARLESTON        32.85N 79.97W
04/20/2009  E1.00 INCH       CHARLESTON         SC   NWS EMPLOYEE

            RETIRED NWS EMPLOYEE REPORTS QUARTER SIZE HAIL OFF ASHLEY
            PHOSPHATE RD.

&&

JAQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
352 PM EDT MON APR 20 2009

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

0335 PM     HAIL             NORTH CHARLESTON        32.85N 79.97W
04/20/2009  E0.88 INCH       CHARLESTON         SC   EMERGENCY MNGR

            NICKEL TO DIME SIZE HAIL REPORTED ALONG CORLEY DRIVE.

0335 PM     HAIL             NORTH CHARLESTON        32.85N 79.97W
04/20/2009  E1.00 INCH       CHARLESTON         SC   PUBLIC

            QUARTER SIZE HAIL REPORTED ALONG ASHLEY PHOSPHATE AND
            DORCHESTER ROAD.

&&

JHP

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

SCZ045-202030-
BERKELEY-
402 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN BERKELEY COUNTY
THROUGH 430 PM EDT...

AT 401 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA SIZE HAIL...AND GUSTY
WINDS OF 35 TO 45 MPH.  THIS STORM WAS LOCATED NEAR BLACK CREEK...OR
ABOUT 17 MILES NORTHWEST OF MONCKS CORNER...MOVING NORTHEAST AT 35
MPH.

AREAS IN AND AROUND EASTERN LAKE MARION AND EADYTOWN WILL BE IMPACTED
THROUGH 430 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
408 PM EDT MON APR 20 2009

SCZ043-044-048>051-202045-
BEAUFORT-CHARLESTON-COASTAL COLLETON-COASTAL JASPER-DORCHESTER-INLAND
COLLETON-
408 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT EAST CENTRAL JASPER...BEAUFORT...
SOUTHWESTERN CHARLESTON...SOUTHEASTERN COLLETON AND SOUTHEASTERN
DORCHESTER COUNTIES THROUGH 445 PM EDT...

AT 408 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CAPABLE OF PRODUCING 1/2 INCH HAIL...AND STRONG
WINDS OF 40 TO 50 MPH.  THIS STORM WAS LOCATED NEAR GRAYS HILL...OR
ABOUT OVER BEAUFORT...MOVING EAST AT 20 MPH.

AREAS IN AND AROUND ADAMS RUN...ASHEPOO...BEAUFORT...BENNETTS
POINT...BLUFFTON...DALE...DELEMAR CROSSROADS...EDISTO BEACH...EDISTO
ISLAND...FOLLY FIELD...FOREST BEACH...FRIPP ISLAND...GARDENS
CORNER...GREEN POND...HILTON HEAD AIRPORT...HILTON HEAD ISLAND...
HOLLYWOOD...JACKSONBORO...JASPER...JOHNS ISLAND...KIAWAH ISLAND...
MARINE CORPS AIR STATION...MEGGETT...PARRIS ISLAND...POCOTALIGO...
PORT ROYAL...RAVENEL...ROCKVILLE...SEABROOK ISLAND...SHELDON...SLANDS
BRIDGE...WADMALAW ISLAND...WHITE HALL AND YONGES ISLAND WILL BE
IMPACTED THROUGH 445 PM EDT.

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY IF SEVERE
WEATHER IS OBSERVED OR A WARNING IS ISSUED.

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
436 PM EDT MON APR 20 2009

GAZ116>119-SCZ047-051-202115-
COASTAL BRYAN-COASTAL CHATHAM-COASTAL JASPER-INLAND BRYAN-INLAND
CHATHAM-INLAND JASPER-
436 PM EDT MON APR 20 2009

...STRONG THUNDERSTORMS WILL IMPACT SOUTH CENTRAL JASPER...EASTERN
CHATHAM AND SOUTHEASTERN BRYAN COUNTIES THROUGH 515 PM EDT...

AT 434 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING PEA SIZE HAIL...AND
GUSTY WINDS OF 35 TO 45 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM LEVY TO FORT MCALLISTER...OR ALONG A LINE EXTENDING
FROM BELLINGER HILL AREA TO 6 MILES SOUTHEAST OF RICHMOND HILL...
MOVING NORTHEAST AT 30 MPH.

AREAS IN AND AROUND FORT MCALLISTER...ISLE OF HOPE...SANDFLY...
SAVANNAH...SKIDAWAY ISLAND...THUNDERBOLT...TYBEE ISLAND...
VERNONBURG...WHITE BLUFF...WILMINGTON ISLAND...WINDSOR FOREST...
BELLINGER HILL AREA AND RIVERSIDE WILL BE IMPACTED THROUGH 515 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.