Alert archive / South Carolina / Special Weather Statements in 2014

Special Weather Statement, NWS Charleston, SC

June 15, 2014Clarendon County, South Carolina

NWS Charleston, SC issued this special weather statement at Jun 15, 2014, 5:48 PM EDT for Clarendon County, South Carolina. It was in force for 27 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: Jun 15, 2014, 5:48 PM EDT (21:48 UTC)
Expired: Jun 15, 2014, 6:15 PM EDT
In force: 27 min
Issued by: NWS Charleston, SC

County Clarendon County, SC

The radar

The Columbia radar (KCAE), 103 km from the middle of the area, began a volume at 21:48 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, 9.8 hours before the alert went out and 62 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1112 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 950 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: -27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Jun 15, 4:01 PM EDT, 1 hour 47 minutes earlier.

Area forecast discussion, Jun 15, 4:01 PM EDT, 1 hour 47 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
401 PM EDT SUN JUN 15 2014

.SYNOPSIS...
A WEAK COLD FRONT WILL STALL OVER THE REGION AND DISSIPATE THIS
EVENING INTO TONIGHT. ATLANTIC HIGH PRESSURE WILL THEN PREVAIL THROUGH
NEXT WEEKEND...WITH A TROUGH OF LOW PRESSURE BECOMING ESTABLISHED
INLAND BY MID WEEK.

&&

.NEAR TERM /UNTIL 6 AM MONDAY MORNING/...
A MID LVL RIDGE OF HIGH PRESSURE WILL REMAIN CENTERED OVER THE
SOUTHEASTERN UNITED STATES THIS EVENING AND TONIGHT WHILE A H5
SHORTWAVE CONTINUES TO SHIFT SOUTHEAST OVER FLORIDA AND OFFSHORE.
DESPITE WARMER AND DRYER AIR IN THE MID/UPPER LVLS...SHOWERS AND
THUNDERSTORMS HAVE DEVELOPED WHERE SBCAPES RANGE BETWEEN 3000 TO
4000 J/KG. EXPECT MAINLY PULSE TYPE SHOWERS AND/OR THUNDERSTORMS
TO CONTINUE ALONG AN INLAND MOVING SEABREEZE IN SOUTHEAST SOUTH
CAROLINA AND SOUTHEAST GEORGIA THIS EVENING. A FEW THUNDERSTORMS
COULD BE STRONG WITH GUSTY WINDS AND HEAVY RAINFALL AT TIMES...BUT
THE THREAT OF ANYTHING SEVERE WILL REMAIN LOW.

A WEAK SFC FRONT SHOULD MAKE WAY INTO NORTHERN ZONES OF SOUTHEAST
SOUTH CAROLINA THIS EVENING...WHICH COULD SPARK A FEW ADDITIONAL
SHOWERS AND/OR THUNDERSTORMS...BUT THE FRONT WILL BE IN A
WEAKENING/DISSIPATING PHASE AS WE HEAD INTO THE OVERNIGHT PERIOD.
GIVEN WEAK SHEAR AND THE LOSS OF DAYTIME HEATING...EXPECT MOST
SHOWERS AND/OR THUNDERSTORMS TO DIMINISH NEAR OR SHORTLY AFTER
SUNSET.

THE MAIN CONCERN FOR THE OVERNIGHT PERIOD WILL THEN SWITCH OVER TO
THE POSSIBILITY OF PATCHY FOG FOR AREAS AWAY FROM THE COAST.
ALTHOUGH MODELS HAVE BACKED OFF A BIT ON FOG POTENTIAL...MOSTLY
CLEAR SKIES...LIGHT/CALM WINDS...AND SFC DEWPTS NEAR 70...SUGGEST
SOME FOG POSSIBILITY...ESPECIALLY FOR LOCATIONS THAT HAVE
EXPERIENCED RAIN THIS AFTERNOON/EVENING. HAVE INTRODUCED PATCHY
FOG AWAY FROM THE COAST AS A RESULT. OVERNIGHT LOW TEMPS ARE
EXPECTED TO RANGE IN THE UPPER 60S INLAND TO LOWER 70S.

&&

.SHORT TERM /6 AM MONDAY MORNING THROUGH WEDNESDAY/...
A MID AND UPPER LEVEL RIDGE WILL REMAIN OVER OR JUST WEST OF THE
AREA THROUGH THE PERIOD. AT THE SURFACE...A RIDGE OF HIGH PRESSURE
WILL GENERALLY REMAIN CENTERED EAST AND SOUTH OF THE REGION OVER THE
ATLANTIC WATERS. THIS WILL RESULT IN MAINLY SOUTH-SOUTHEASTERLY LOW
LEVEL FLOW. DEEP LAYER MOISTURE WILL BE THE INGREDIENT LACKING
THROUGH THE PERIOD...EXCEPT OVER THE EXTREME SOUTH AND INTERIOR
PORTIONS OF THE FORECAST AREA ON MONDAY. HAVE CONTINUED SLIGHT CHANCE POPS
EXTREME SOUTH AND INTERIOR FOR MONDAY. GIVEN THE VERY LIGHT STEERING
FLOWS...ANY ISOLATED SHOWERS/THUNDERSTORMS THAT DO FORM...COULD
PRODUCE LOCALLY HEAVY RAINFALL.

BY TUESDAY AND WEDNESDAY...ALL MODELS AGREE WITH KEEPING ANY
SIGNIFICANT PRECIP/POPS WEST AND SOUTH OF THE AREA. THUS...HAVE KEPT
POPS BELOW 15%.

GIVEN A DEEP LAYER RIDGE TO DOMINATE THE PATTERN THROUGH
WEDNESDAY...EXPECT TEMPS /BOTH HIGHS AND LOWS/ TO BE SLIGHTLY ABOVE
SEASONAL NORMALS. GENERALLY HIGHS AROUND 90 TO THE LOWER 90S...AND
LOWS IN THE UPPER 60S TO LOWER 70S.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...
MEDIUM RANGE GUIDANCE IS IN FAIRLY GOOD AGREEMENT THROUGH MOST OF
THE LONG TERM PERIOD WITH RESPECT TO THE OVERALL SYNOPTIC PATTERN.
STRONG MID AND UPPER LEVEL RIDGING WILL PREVAIL OVER THE SOUTHEAST
STATES THROUGH LATE WEEK...BEFORE BREAKING DOWN SOME OVER THE
WEEKEND IN RESPONSE TO AN UPPER LOW TRACKING ACROSS THE GREAT LAKES
REGION. AT THE SURFACE...HIGH PRESSURE WILL SHIFT FARTHER INTO
THE ATLANTIC THROUGH THE PERIOD...WITH A LEE SIDE TROUGH BECOMING
ESTABLISHED INLAND. A BACKDOOR COLD FRONT COULD DROP ACROSS THE
MID-ATLANTIC REGION OVER THE WEEKEND.

ISOLATED TO POSSIBLY SCATTERED SHOWERS AND THUNDERSTORMS ARE
GENERALLY EXPECTED TO DEVELOP IN THE VICINITY OF THE LEE SIDE TROUGH
AND ALONG/AHEAD OF THE SEA BREEZE EACH AFTERNOON AND EVENING...WITH
THE BEST COVERAGE GENERALLY INLAND FROM THE COAST. TEMPERATURES WILL
BE ABOVE NORMAL THROUGH THE LONG TERM PERIOD.

&&

.AVIATION /20Z SUNDAY THROUGH FRIDAY/...
ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO
DEVELOP THIS EVENING IN ASSOCIATION WITH A WEAKENING FRONT
DROPPING THROUGH THE AREA AND ALONG THE SEA BREEZE. HAVE
MAINTAINED VCTS AT BOTH CHS AND SAV TERMINALS FROM 18Z TO
22Z...BUT PREVAILING THUNDERSTORMS COULD BE NEEDED AT EITHER
TERMINAL FOR A FEW HOURS BEFORE SUNSET. LATER TONIGHT...ABUNDANT
LOW LEVEL MOISTURE AND LIGHT WINDS COULD RESULT IN PATCHY FOG WITH
MVFR OR LOWER VISIBILITIES AND/OR CEILINGS POSSIBLE AFTER
06Z...ESPECIALLY FOR AREAS THAT SEE RAIN THIS AFTERNOON. VFR
CIGS/VSBYS WILL LIKELY RETURN AT BOTH TERMINALS BY 15Z MONDAY.

EXTENDED AVIATION OUTLOOK...MAINLY VFR CONDITIONS TO PREVAIL THIS
WEEK WITH ISOLATED AFTERNOON SHOWERS AND THUNDERSTORMS...ESPECIALLY
MID TO LATE IN THE WORK WEEK.

&&

.MARINE...
THIS EVENING AND TONIGHT...WINDS AND SEAS WILL REMAIN WELL BELOW
SMALL CRAFT ADVISORY LEVELS AS HIGH PRESSURE BUILDS SOUTH ALONG
THE EASTERN SEABOARD. IN GENERAL...SOUTHEAST WINDS WILL REMAIN AT
OR BELOW 10 KTS THIS EVENING AND EARLY TONIGHT BEFORE BECOMING
EAST AFTER MIDNIGHT. SEAS WILL BE NO HIGHER THAN 2 FT THROUGH
TONIGHT.

MONDAY THROUGH FRIDAY...NO HIGHLIGHTS EXPECTED THROUGH THE PERIOD.
EXPECT ATLANTIC HIGH PRESSURE TO PREVAIL THROUGH THE WORK WEEK.
THIS PATTERN WILL PRODUCE SOUTHEAST TO SOUTH FLOW ACROSS THE
WATERS. WIND SPEEDS WILL BE 15 KT OR LESS AND SEAS 3 FEET OR LESS.
THERE COULD BE SOME NOCTURNAL SURGES...AS WELL AS ALONG THE
LAND/SEA INTERFACE EACH AFTERNOON/EVENING.

&&

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

&&

NEAR TERM...DPB
SHORT TERM...RFM
LONG TERM...JAQ
AVIATION...DPB/RFM
MARINE...DPB/RFM

Hazardous weather outlook, Jun 15, 3:57 AM EDT, 13 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
357 AM EDT SUN JUN 15 2014

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-161045-
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-
357 AM EDT SUN JUN 15 2014

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

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Jun 15, 4:57 PM EDT, 51 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
457 PM EDT SUN JUN 15 2014

GAZ100-116-152130-
BULLOCH-INLAND BRYAN-
457 PM EDT SUN JUN 15 2014

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF BULLOCH AND BRYAN
COUNTIES THROUGH 530 PM EDT...

AT 453 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM...NEAR IVANHOE...MOVING SOUTHWEST AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
HUBERT...IVANHOE...BAY...AKINS...DENMARK...PEMBROKE...

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

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 3210 8169 3231 8179 3234 8151 3223 8143
TIME...MOT...LOC 2057Z 067DEG 9KT 3227 8153

Special weather statement, Jun 15, 5:45 PM EDT, 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
545 PM EDT SUN JUN 15 2014

SCZ043>045-152215-
DORCHESTER-INLAND BERKELEY-INLAND COLLETON-
545 PM EDT SUN JUN 15 2014

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...BERKELEY
AND COLLETON COUNTIES THROUGH 615 PM EDT...

AT 540 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM...NEAR SPRING HILL...MOVING SOUTHWEST AT 5 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
HUSSERTOWN...SANDRIDGE...EBENEZER...SPRING HILL...
PRINGLETOWN...FRANCIS BEIDLER FOREST...HARLEYVILLE...

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

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 3329 8025 3315 8019 3303 8041 3324 8052
      3326 8037 3327 8036 3327 8032 3327 8031
      3328 8029
TIME...MOT...LOC 2144Z 067DEG 6KT 3320 8028

Special weather statement, Jun 15, 5:48 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
548 PM EDT SUN JUN 15 2014

SCZ045-152215-
INLAND BERKELEY-
548 PM EDT SUN JUN 15 2014

...MARINERS ON EASTERN LAKE MARION SHOULD SEEK SAFE HARBOR...

AT 545 PM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 9 MILES NORTHEAST
OF EADYTOWN TO EADYTOWN...MOVING SOUTHWEST AT 5 MPH. MARINERS ON
LAKE MARION ARE URGED TO SEEK SAFE HARBOR.

PREPARE NOW FOR THE FOLLOWING HAZARDS...
WINDS UP TO 30 KNOTS...
CLOUD TO WATER LIGHTNING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS ARE EXPECTED TO IMPACT LAKE MARION. BOATERS SHOULD SEEK
SAFE HARBOR IMMEDIATELY. IF CAUGHT ON THE OPEN WATERS...STAY AS LOW
AS POSSIBLE AND WEAR A PERSONAL FLOATATION DEVICE. SWIMMERS SHOULD
GET OUT OF THE WATER AND INTO A STURDY BUILDING. REMEMBER...IF YOU
CAN HEAR THUNDER YOU ARE AT RISK OF BEING STRUCK BY LIGHTNING.

&&

LAT...LON 3345 8016 3341 8014 3338 8015 3340 8023
      3345 8022 3345 8021 3346 8021 3345 8020
      3346 8018 3345 8017 3346 8017
TIME...MOT...LOC 2148Z 039DEG 3KT 3349 8003 3336 8016

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 14, 8:56 PM EDT	Special Marine Warning	CHS		94 min
Jun 15, 5:45 PM EDT	Special Weather Statement	CHS	Dorchester	30 min
Jun 15, 6:10 PM EDT	Special Weather Statement	CHS	Dorchester	35 min
Jun 15, 6:16 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Dorchester	59 min
Jun 15, 6:57 PM EDT	Areal Flood Advisory	CHS	Berkeley, Dorchester	93 min
Jun 15, 7:15 PM EDT	Special Weather Statement	CHS	Dorchester	30 min
Jun 14, 8:27 PM EDT	Special Weather Statement	CHS	McIntosh	33 min
Jun 15, 2:57 PM EDT	Flash Flood Warning	CHS	Liberty, Long, McIntosh	63 min
Jun 15, 4:57 PM EDT	Special Weather Statement	CHS	Bulloch	33 min

Nearby

Special Weather Statements in South Carolina, 2014 Every special weather statement in 2014

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.