Severe Thunderstorm Warning 74, NWS Charleston, SC

209 
WWUS52 KCHS 261938
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
338 PM EDT WED JUN 26 2013

SCC015-261948-
/O.CAN.KCHS.SV.W.0074.000000T0000Z-130626T2030Z/
BERKELEY SC-
338 PM EDT WED JUN 26 2013

...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF BERKELEY COUNTY
HAS BEEN CANCELLED...

LAT...LON 3308 7934 3300 7937 3300 7949 3303 7953
      3302 7956 3299 7954 3301 7956 3295 7961
      3293 7961 3293 7958 3297 7956 3291 7957
      3275 7984 3279 7990 3292 7981 3313 7944
      3314 7927
TIME...MOT...LOC 1938Z 265DEG 15KT 3286 7975

$$

SCC019-262030-
/O.CON.KCHS.SV.W.0074.000000T0000Z-130626T2030Z/
CHARLESTON SC-
338 PM EDT WED JUN 26 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR PORTIONS OF CHARLESTON COUNTY...

AT 338 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM NEAR HAMLIN PLANTATION...MOVING EAST
AT 15 MPH.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
DAMAGING WINDS IN EXCESS OF 60 MPH...
HAIL UP TO QUARTER SIZE...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
MCCLELLANVILLE...MOUNT PLEASANT...SULLIVANS ISLAND...BOONE HALL
PLANTATION...BULL ISLAND...CAPE ROMAIN...CAPERS INLET...GARRIS
LANDING...ISLE OF PALMS...LIGHTHOUSE ISLAND...MOUNT PLEASANT REGIONAL
AIRPORT...MOUNT PLEASANT TOWNE CENTRE AND PRICE INLET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3308 7934 3300 7937 3300 7949 3303 7953
      3302 7956 3299 7954 3301 7956 3295 7961
      3293 7961 3293 7958 3297 7956 3291 7957
      3275 7984 3279 7990 3292 7981 3313 7944
      3314 7927
TIME...MOT...LOC 1938Z 265DEG 15KT 3286 7975

$$

688 
WWUS52 KCHS 262000
SVSCHS

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
400 PM EDT WED JUN 26 2013

SCC019-262011-
/O.CAN.KCHS.SV.W.0074.000000T0000Z-130626T2030Z/
CHARLESTON SC-
400 PM EDT WED JUN 26 2013

...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF CHARLESTON COUNTY
HAS BEEN CANCELLED...

AT 401 PM EDT...RADAR INDICATED THAT THE THUNDERSTORM THAT PROMPTED
THE WARNING HAD WEAKENED...THUS THE WARNING HAS BEEN CANCELED.

ALTHOUGH THE SEVERE THUNDERSTORM WARNING IS NO LONGER IN EFFECT...
THUNDERSTORMS ARE STILL CAPABLE OF PRODUCING GUSTY WINDS...SMALL
HAIL...FREQUENT LIGHTNING AND HEAVY RAINFALL. 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.

LAT...LON 3308 7934 3300 7937 3300 7949 3303 7953
      3302 7956 3299 7954 3301 7956 3295 7961
      3293 7961 3293 7958 3297 7956 3291 7957
      3275 7984 3279 7990 3292 7981 3313 7944
      3314 7927
TIME...MOT...LOC 2001Z 265DEG 15KT 3287 7964

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
159 PM EDT WED JUN 26 2013

.SYNOPSIS...
BERMUDA HIGH PRESSURE WILL PREVAIL THIS WEEK...WHILE A WEAK
TROUGH OF LOW PRESSURE LINGERS INLAND. A COLD FRONT WILL APPROACH
AND POSSIBLY STALL NEAR THE AREA EARLY NEXT WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
WATER VAPOR IMAGERY SHOWS DISTINCT SHORTWAVES SLIPPING TOWARD THE
SOUTHEAST COASTLINE WITHIN A WEAK UPPER TROUGH. PWAT VALUES NEAR
ONE INCH REFLECT THE ABUNDANT DEEP MOISTURE...AND WHEN COMBINED
WITH DECENT DIURNAL INSTABILITY...HAS SUPPORTED ISOLATED TO
SCATTERED SHOWER INITIATION BY EARLY AFTERNOON. CONVECTIVE
COVERAGE CURRENTLY FAVORS THE SOUTHEAST GEORGIA REGION...AS
THESE LOCATIONS ARE WITHIN THE MOST UNSTABLE AIR AND ARE CLOSEST
TO APPROACHING SHORTWAVE ENERGY FROM THE WEST/SOUTHWEST.
CONVECTION HAS BEEN SLOWER TO DEVELOP EAST OF INTERSTATE 95 AND
ACROSS THE CHARLESTON TRI COUNTY AREA...LIKELY A RESULT OF THE
SEABREEZE PINNED WITHIN WESTERLY MID LEVEL FLOW AND POSSIBLY SOME
DISRUPTION IN THE ENVIRONMENT FROM EARLIER CONVECTION UPSTREAM.
NUMERICAL MODEL SOLUTIONS ARE IN FAIRLY GOOD AGREEMENT THAT
COVERAGE WILL EVENTUALLY SPREAD EAST/NORTHEAST DURING THE NEXT
SEVERAL HOURS. HAVE TRENDED RAIN CHANCES INTO THE 30 TO 40 PERCENT
RANGE BY MID AFTERNOON...HIGHEST INLAND LOCATIONS.

ALTHOUGH THERE WILL BE SOME SYNOPTIC SCALE SUPPORT FROM THE
VARIOUS SHORTWAVES...THE WIND PROFILE IS RATHER UNIMPRESSIVE AND
LAPSE RATES ARE AVERAGE. THUS...ANY ISOLATED STRONG TO SEVERE
THUNDERSTORM DEVELOPMENT WILL BE DEPENDENT ON MESOSCALE BOUNDARY
INTERACTIONS. THE MAIN HAZARDS FROM ORGANIZED CONVECTION WILL BE
STRONG WINDS AND PERHAPS EVEN SOME HAIL.

HOURLY FORECAST TEMPERATURES ARE ON TRACK WITH LATEST
OBSERVATIONS...AND WILL THUS MAINTAIN FORECAST HIGH TEMPERATURES
IN THE LOWER 90S INLAND TO THE UPPER 80S CLOSER TO THE COAST.

CONVECTIVE ACTIVITY SHOULD BE DIMINISHING THIS EVENING...WITH
ONLY ISOLATED SHOWERS AND THUNDERSTORMS OVERNIGHT AS WEAK
SHORTWAVE ENERGY CONTINUES TO SLIP THROUGH THE REGION. LOWS WILL
BE IN THE LOWER TO MIDDLE 70S.

&&

.SHORT TERM /THURSDAY THROUGH SATURDAY/...
THURSDAY AND THURSDAY NIGHT...EXPECT A RATHER ACTIVE PERIOD AS A
MID AND UPPER LEVEL TROUGH SHIFTS EAST OF THE SOUTHERN
APPALACHIANS ON THURSDAY...THEN DIGS SOUTHWARD ALONG THE
SOUTHEAST COAST THURSDAY NIGHT. THE SYNOPTIC SOUTHWEST FLOW
BETWEEN ATLANTIC HIGH PRESSURE AND A LEE-SIDE TROUGH INLAND WILL
ALLOW FOR CONSIDERABLE ADVECTION OF MOISTURE...WITH PRECIPITABLE
WATER VALUES APPROACHING 2 INCHES IN MANY AREAS. SHOWERS AND
THUNDERSTORMS WILL BECOME SCATTERED IN COVERAGE DURING THE LATE
MORNING AND AFTERNOON...AND COULD EVEN INCREASE IN COVERAGE
THROUGH THE EVENING AS A POTENT SHORT WAVE CROSSES THE AREA. MODEL
SOUNDINGS... ESPECIALLY FROM THE GFS...ARE RATHER IMPRESSIVE IN
TERMS OF SEVERE WEATHER POTENTIAL. SURFACE BASED CAPE VALUES REACH
2500-3000 J/KG AND LI/S ARE DOWN TO -8C. THE PRIMARY THREAT WITH
ANY SEVERE THUNDERSTORMS WILL BE DAMAGING WINDS GIVEN A WINDEX OF
61 KT AND DOWNDRAFT CAPE VALUES OVER 700 J/KG...HAIL WILL BE LESS
LIKELY WITH WET BULB ZERO HEIGHTS AROUND 13K FT. TEMPERATURES WILL
REACH HIGHS IN THE LOWER 90S AWAY FROM THE IMMEDIATE COAST...WITH
NIGHTTIME LOWS IN THE LOWER TO MID 70S.

FRIDAY AND FRIDAY NIGHT...THE REGION WILL BE BENEATH A BROAD UPPER
LEVEL TROUGH WHILE ATLANTIC HIGH PRESSURE AND A LEE SIDE TROUGH
PREVAIL AT THE SURFACE. EXPECT SCATTERED SHOWERS AND THUNDERSTORMS
MAINLY DURING THE AFTERNOON AND EVENING ALTHOUGH COVERAGE SHOULD BE
A BIT LESS THAN THURSDAY GIVEN LOWER PRECIPITABLE WATER VALUES AND
WEAK NEGATIVE VORTICITY ADVECTION ALOFT. HIGHS REMAIN IN THE LOWER
90S WITH LOWS IN THE LOWER TO MID 70S.

SATURDAY...UNDER A SIMILAR SYNOPTIC PATTERN...THIS COULD BE A RATHER
WET DAY AS AN AXIS OF DEEP MOISTURE SHIFTS OVER THE AREA AND A SHORT
WAVE DISTURBANCE CROSSES. WITH PRECIPITABLE WATER VALUES OF
2.00-2.25 INCHES THERE IS THE POTENTIAL FOR HEAVY RAINFALL...BUT
FORTUNATELY STORM MOTIONS APPEAR RATHER PROGRESSIVE WHICH SHOULD
LIMIT THE POTENTIAL FOR SIGNIFICANT FLOODING UNLESS TRAINING OF
CELLS OCCUR. THE FORECAST INDICATES A GOOD CHANCE OF SHOWERS AND
THUNDERSTORMS...BUT PROBABILITIES MAY NEED TO BE INCREASED WITH
FUTURE FORECASTS. TEMPERATURES COULD BE KEPT A DEGREE OR TWO COOLER
THAN PREVIOUS DAYS GIVEN CLOUD COVER AND GREATER COVERAGE OF
PRECIPITATION.

&&

.LONG TERM /SATURDAY NIGHT THROUGH TUESDAY/...
MEDIUM RANGE GUIDANCE IS IN FAIRLY GOOD AGREEMENT INDICATING THE
POTENTIAL FOR UNSETTLED CONDITIONS THROUGH MUCH OF THE LONG TERM
PERIOD. THE SYNOPTIC PATTERN IN THE MID AND UPPER LEVELS OF THE
ATMOSPHERE WILL FEATURE AN UNSEASONABLY DEEP TROUGH OVER THE CENTRAL
UNITED STATES WITH A RIDGE OVER THE WESTERN ATLANTIC ALLOWING FOR
ADVECTION OF DEEP MOISTURE OVER THE REGION. AT THE SURFACE...
ATLANTIC HIGH PRESSURE WILL PREVAIL AS A LEE SIDE TROUGH LINGERS
INLAND.

THE FORECAST WILL INDICATE A GOOD CHANCE OF SHOWERS AND
THUNDERSTORMS EACH DAY...WITH A SLIGHT CHANCE OR LOW CHANCE OF
SHOWERS AND THUNDERSTORMS AT NIGHT. OVERALL...PARTS OF THE REGION
COULD EXPERIENCE SEVERAL INCHES OF RAINFALL DURING THE COURSE OF THE
LONG TERM PERIOD. NEAR NORMAL TEMPERATURES ARE EXPECTED EACH DAY
WITH NEAR TO SLIGHTLY ABOVE NORMAL TEMPERATURES AT NIGHT.

&&

.AVIATION /18Z WEDNESDAY THROUGH MONDAY/...
ISOLATED TO SCATTERED CONVECTION WILL EVENTUALLY APPROACH AND/OR
DEVELOP NEAR THE TERMINALS AS THE AFTERNOON PROGRESSES. WILL MAINTAIN
VCTS AT KCHS AND KSAV THROUGH ABOUT 21Z. EXPECT THUNDERSTORM ACTIVITY
TO DIMINISH IN COVERAGE AFTER SUNSET WITH THE LOSS OF DIURNAL HEATING
AND INSTABILITY. ALTHOUGH BRIEF REDUCTIONS IN CEILINGS/VISIBILITIES
COULD OCCUR IN THUNDERSTORMS...VFR CONDITIONS ARE OTHERWISE EXPECTED
TO PREVAIL THROUGH 18Z THURSDAY.

EXTENDED AVIATION...SCATTERED SHOWERS AND TSTMS EXPECTED EACH
AFTERNOON/EVENING WITH BRIEF REDUCTIONS IN VSBY/CIG POSSIBLE.

&&

.MARINE...
ATLANTIC HIGH PRESSURE WILL PREVAIL...AS A TROUGH OF LOW PRESSURE
LINGERS INLAND. THIS PATTERN WILL MAINTAIN SOUTH/SOUTHWEST FLOW
ACROSS THE WATERS THROUGH THE PERIOD. THE GRADIENT IS EXPECTED TO
TIGHTEN A BIT LATE IN THE WEEK INTO THE WEEKEND AND COULD RESULT
IN SMALL CRAFT ADVISORY CONDITIONS OVER PARTS OF THE
WATERS...ESPECIALLY THE OUTER GEORGIA WATERS...ANYTIME FROM
THURSDAY NIGHT THROUGH SUNDAY NIGHT. WINDS SHOULD BE STRONGEST
DURING THE DAY ALONG THE LAND/SEA INTERFACE AND AT NIGHT OVER THE
COASTAL WATERS WITH NOCTURNAL SURGING.

&&

.CHS WATCHES/WARNINGS/ADVISORIES...
GA...NONE.
SC...NONE.
MARINE...NONE.

&&

NEAR TERM...WMS
SHORT TERM...JAQ
LONG TERM...JAQ
AVIATION...WMS
MARINE...JAQ/JRL

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
449 AM EDT WED JUN 26 2013

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-271000-
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 BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
449 AM EDT WED JUN 26 2013

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

SEVERE THUNDERSTORMS...THERE IS THE POTENTIAL FOR A FEW
THUNDERSTORMS TO BECOME SEVERE THURSDAY INTO THURSDAY NIGHT. THE
PRIMARY THREAT WITH ANY SEVERE THUNDERSTORMS WILL BE DAMAGING
WINDS. IN ADDITION...ANY THUNDERSTORMS WILL BE CAPABLE OF
PRODUCING FREQUENT LIGHTNING AND LOCALLY HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1205 PM EDT WED JUN 26 2013

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

0600 PM     TSTM WND DMG     5 N PEMBROKE            32.21N  81.62W
06/25/2013                   BULLOCH            GA   TRAINED SPOTTER

            A COUPLE 3 TO 4 INCH DIAMETER LIMBS DOWN.

&&

EVENT NUMBER CHS1300547

VB

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
255 PM EDT WED JUN 26 2013

GAZ114-115-261930-
EVANS-TATTNALL-
255 PM EDT WED JUN 26 2013

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF TATTNALL AND EVANS
COUNTIES THROUGH 330 PM EDT...

AT 253 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR FIVE POINTS...MOVING EAST AT 20 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ALTAMAHA...GORDONIA ALTAMAHA STATE PARK...REIDSVILLE...TISON...FIVE
POINTS...LYNN...GLENNVILLE...BAY BRANCH...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
PENNY SIZE HAIL...

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.

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.

&&

LAT...LON 3209 8221 3219 8219 3227 8191 3211 8185
      3197 8186 3195 8189 3193 8188 3189 8189
      3188 8191 3181 8196 3180 8198 3178 8198
      3182 8202 3186 8212 3189 8211 3189 8213
      3190 8214 3190 8219 3191 8223
TIME...MOT...LOC 1855Z 254DEG 17KT 3193 8209

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
303 PM EDT WED JUN 26 2013

SCZ044-045-050-052-261930-
CHARLESTON-DORCHESTER-INLAND BERKELEY-TIDAL BERKELEY-
303 PM EDT WED JUN 26 2013

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...
CHARLESTON AND BERKELEY COUNTIES THROUGH 330 PM EDT...

AT 301 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM MCCLELLANVILLE TO
NAVAL WEAPONS STATION CHARLESTON TO OAKLAND...MOVING EAST AT 15 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
NAVAL WEAPONS STATION CHARLESTON...HANAHAN...RIVERFRONT PARK...JAMES
ISLAND COUNTY PARK...SANTEE COASTAL RESERVE...THE CITADEL...MEDICAL
UNIVERSITY OF SOUTH CAROLINA...COOPER RIVER MARINA...MARION SQUARE...
COLUMBUS STREET TERMINAL...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 45 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...
TORRENTIAL RAIN WHICH MAY PRODUCE LOCALIZED FLOODING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

&&

LAT...LON 3314 7927 3308 7934 3300 7936 3302 7956
      3299 7955 3301 7956 3295 7961 3293 7961
      3297 7955 3290 7958 3275 7984 3278 7990
      3277 7992 3274 7986 3268 7988 3261 8006
      3301 8013 3324 7947
TIME...MOT...LOC 1903Z 271DEG 12KT 3311 7942 3295 7998
          3278 8002