Alert archive / South Carolina / Lake Wind Advisories in 2012

Lake Wind Advisory 1, NWS Charleston, SC

January 1, 2012Berkeley County, South Carolina

NWS Charleston, SC issued this lake wind advisory at Jan 1, 2012, 4:16 AM EST for Berkeley County, South Carolina. It took effect at Jan 1, 2012, 6:34 PM EST. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued
Jan 1, 2012, 4:16 AM EST (09:16 UTC)
In effect from
Jan 1, 2012, 6:34 PM EST
Expired
Jan 3, 2012, 7:00 PM EST
In force
48 hr
Issued by
NWS Charleston, SC

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 09:21 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 00:00Z, 9.3 hours before the alert went out and 33 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-pSkew-T log-p diagram, Charleston AFB, SC at 00:00Z on 2012-01-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2012-01-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 76 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2445 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
76 m²/s²
0-3 km storm-relative helicity
82 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.

511 
WWUS72 KCHS 010916
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
416 AM EST SUN JAN 1 2012

SCZ045-011730-
/O.NEW.KCHS.LW.Y.0001.120101T1800Z-120102T1500Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
416 AM EST SUN JAN 1 2012

...LAKE WIND ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 AM
EST MONDAY FOR LAKE MOULTRIE...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A LAKE WIND
ADVISORY...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 10 AM
EST MONDAY. 

* HAZARDS: GUSTY WINDS THIS AFTERNOON...STRONGER WINDS AND CHOPPY
  WAVES TONIGHT.

* WINDS: SW 15 TO 25 KT...BECOMING NW TONIGHT.

* WAVES: BUILDING TO 1 TO 2 FT TONIGHT.

* TIMING: GUSTY WINDS ALONG SOUTH AND SOUTHWEST SHORES OF LAKE
  MOULTRIE THIS AFTERNOON...THEN DETERIORATING CONDITIONS OVER
  OPEN LAKE WATERS AFTER DUSK.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY LEAD
TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
17 follow-up statements
285 
WWUS72 KCHS 011127
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
627 AM EST SUN JAN 1 2012

GAZ137>141-011400-
/O.NEW.KCHS.FG.Y.0001.120101T1127Z-120101T1400Z/
LONG-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-
INCLUDING THE CITIES OF...LUDOWICI...HINESVILLE...
HALFMOON LANDING...TOWNSEND...DARIEN
627 AM EST SUN JAN 1 2012

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST THIS MORNING...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A DENSE FOG
ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM EST THIS MORNING. 

* HAZARDS: WIDESPREAD DENSE FOG WILL CONTINUE THROUGH MID MORNING.

* VISIBILITIES: 1/4 MILE OR LESS.

* TIMING: THE FOG WILL BURN OFF BY 9 AM.

* IMPACTS: DENSE FOG COULD MAKE FOR HAZARDOUS TRAVEL THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR LOW BEAM HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD
OF YOU IN CASE A SUDDEN STOP IS NEEDED.

&&

$$

SCZ045-011400-
/O.CON.KCHS.LW.Y.0001.120101T1800Z-120102T1500Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
627 AM EST SUN JAN 1 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON
TO 10 AM EST MONDAY FOR LAKE MOULTRIE...

* HAZARDS: GUSTY WINDS THIS AFTERNOON...STRONGER WINDS AND 
  CHOPPY WAVES TONIGHT. 

* WINDS: SW 15 TO 25 KT...BECOMING NW TONIGHT.

* WAVES: BUILDING TO 1 TO 2 FT TONIGHT.

* TIMING: GUSTY WINDS ALONG SOUTH AND SOUTHWEST SHORES OF LAKE 
  MOULTRIE THIS AFTERNOON...THEN DETERIORATING CONDITIONS OVER 
  OPEN LAKE WATERS AFTER DUSK. 

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
019 
WWUS72 KCHS 011344
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
844 AM EST SUN JAN 1 2012

GAZ137>141-011500-
/O.EXT.KCHS.FG.Y.0001.000000T0000Z-120101T1500Z/
LONG-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-
INCLUDING THE CITIES OF...LUDOWICI...HINESVILLE...
HALFMOON LANDING...TOWNSEND...DARIEN
844 AM EST SUN JAN 1 2012

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM EST THIS
MORNING...

* HAZARDS: AREAS OF DENSE FOG WILL CONTINUE THROUGH MID MORNING.

* VISIBILITIES: 1/4 MILE OR LESS.

* TIMING: THE FOG WILL BURN OFF BY 10 AM.

* IMPACTS: DENSE FOG COULD MAKE FOR HAZARDOUS TRAVEL THIS 
  MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR LOW BEAM HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD
OF YOU IN CASE A SUDDEN STOP IS NEEDED.

&&

$$

SCZ045-012130-
/O.CON.KCHS.LW.Y.0001.120101T1800Z-120102T1500Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
844 AM EST SUN JAN 1 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON
TO 10 AM EST MONDAY FOR LAKE MOULTRIE...

* HAZARDS: GUSTY WINDS THIS AFTERNOON...STRONGER WINDS AND 
  CHOPPY WAVES TONIGHT. 

* WINDS: SW 15 TO 25 KT...BECOMING NW TONIGHT.

* WAVES: BUILDING TO 1 TO 2 FT TONIGHT.

* TIMING: GUSTY WINDS ALONG SOUTH AND SOUTHWEST SHORES OF LAKE 
  MOULTRIE THIS AFTERNOON...THEN DETERIORATING CONDITIONS OVER 
  OPEN LAKE WATERS AFTER DUSK. 

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
843 
WWUS72 KCHS 011500
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1000 AM EST SUN JAN 1 2012

GAZ137>141-011700-
/O.EXT.KCHS.FG.Y.0001.000000T0000Z-120101T1700Z/
LONG-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-
INCLUDING THE CITIES OF...LUDOWICI...HINESVILLE...
HALFMOON LANDING...TOWNSEND...DARIEN
1000 AM EST SUN JAN 1 2012

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL NOON EST TODAY...

* HAZARDS: AREAS OF DENSE FOG WILL CONTINUE UNTIL MIDDAY.

* VISIBILITIES: 1/4 MILE OR LESS...BUT IMPROVING LATE THIS MORNING.

* TIMING: THE FOG WILL DISSIPATE BY NOON.

* IMPACTS: DENSE FOG COULD MAKE FOR HAZARDOUS TRAVEL THIS 
  MORNING. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW DOWN...
USE YOUR LOW BEAM HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD
OF YOU IN CASE A SUDDEN STOP IS NEEDED.

&&

$$

SCZ045-012300-
/O.EXT.KCHS.LW.Y.0001.120102T0100Z-120102T1500Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1000 AM EST SUN JAN 1 2012

...LAKE WIND ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EST MONDAY FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: W 15 TO 25 KT...BECOMING NW.

* WAVES: BUILDING TO 1 TO 2 FT TONIGHT.

* TIMING: DETERIORATING CONDITIONS OVER OPEN LAKE WATERS AFTER
  DUSK.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
989 
WWUS72 KCHS 011641
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1141 AM EST SUN JAN 1 2012

GAZ137>141-011745-
/O.EXP.KCHS.FG.Y.0001.000000T0000Z-120101T1700Z/
LONG-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-
INCLUDING THE CITIES OF...LUDOWICI...HINESVILLE...
HALFMOON LANDING...TOWNSEND...DARIEN
1141 AM EST SUN JAN 1 2012

...DENSE FOG ADVISORY WILL EXPIRE AT NOON EST TODAY...

VISIBILITIES CONTINUE TO IMPROVE ACROSS THE AREA...THUS THE DENSE
FOG ADVISORY WILL BE ALLOWED TO EXPIRE. 

$$

SCZ045-020045-
/O.CON.KCHS.LW.Y.0001.120102T0100Z-120102T1500Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1141 AM EST SUN JAN 1 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT FROM 8 PM THIS EVENING TO
10 AM EST MONDAY FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: W 15 TO 25 KT...BECOMING NW.

* WAVES: BUILDING TO 1 TO 2 FT.

* TIMING: DETERIORATING CONDITIONS OVER OPEN LAKE WATERS AFTER 
  DUSK. 

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
991 
WWUS72 KCHS 012033
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
333 PM EST SUN JAN 1 2012

SCZ045-020445-
/O.EXT.KCHS.LW.Y.0001.120102T0100Z-120102T1100Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
333 PM EST SUN JAN 1 2012

...LAKE WIND ADVISORY NOW IN EFFECT FROM 8 PM THIS EVENING TO
6 AM EST MONDAY FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: WEST 15 TO 20 KNOTS WITH GUSTS TO 25 KNOTS LATE THIS
  EVENING...THEN BECOMING NORTHWEST OVERNIGHT.

* WAVES: BUILDING TO 1 TO 2 FEET.

* TIMING: DETERIORATING CONDITIONS OVER OPEN LAKE WATERS LATE THIS
  EVENING...WITH IMPROVING CONDITIONS TOWARD DAYBREAK MONDAY.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
563 
WWUS72 KCHS 012334
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
634 PM EST SUN JAN 1 2012

SCZ045-020745-
/O.EXT.KCHS.LW.Y.0001.120101T2334Z-120102T1100Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
634 PM EST SUN JAN 1 2012

...LAKE WIND ADVISORY NOW IN EFFECT UNTIL 6 AM EST MONDAY FOR
LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: BECOMING WEST AND NORTHWEST AT 15 TO 20 KNOTS WITH GUSTS
  TO 25 KNOTS LATE THIS EVENING AND OVERNIGHT.

* WAVES: BUILDING TO 1 TO 2 FEET.

* TIMING: DETERIORATING CONDITIONS OVER OPEN LAKE WATERS LATE 
  THIS EVENING...WITH IMPROVING CONDITIONS TOWARD DAYBREAK 
  MONDAY. 

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
267 
WWUS72 KCHS 020308
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1008 PM EST SUN JAN 1 2012

SCZ045-021100-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120102T1100Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1008 PM EST SUN JAN 1 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 AM EST MONDAY FOR
LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: BECOMING WEST AND NORTHWEST AT 15 TO 20 KNOTS WITH GUSTS
  TO 25 KNOTS OVERNIGHT.

* WAVES: BUILDING TO 1 TO 2 FEET.

* TIMING: DETERIORATING CONDITIONS OVER OPEN LAKE WATERS
  OVERNIGHT...WITH TEMPORARILY IMPROVING CONDITIONS MONDAY MORNING.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS DIFFICULT FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH MONDAY
MORNING...ESPECIALLY ON THE OPEN LAKE WATERS. STRONG WINDS MAY
LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
251 
WWUS72 KCHS 020906
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
406 AM EST MON JAN 2 2012

SCZ045-021715-
/O.EXT.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
406 AM EST MON JAN 2 2012

...LAKE WIND ADVISORY NOW IN EFFECT UNTIL 6 PM EST TUESDAY FOR
LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: WEST AND NORTHWEST AT 15 TO 25 KNOTS TODAY...INCREASING
  TO 20 TO 30 KT TONIGHT WITH GUSTS UP TO 40 KT.

* WAVES: 1 TO 2 FEET TODAY...BUILDING TO 2 TO 3 FT TONIGHT.

* TIMING: GUSTY WINDS ARE LIKELY TODAY BUT THE STRONGEST WINDS
  WITH THE ONSET OF MUCH COLDER AIR OVER WARMER LAKE WATERS
  OCCURRING TONIGHT.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE TODAY...ESPECIALLY 
ON THE OPEN LAKE WATERS. DANGEROUS CONDITIONS ARE EXPECTED TONIGHT WITH
ROUGH WAVES AND WINDS POTENTIALLY OVER 40 MPH AT TIMES. STRONG WINDS
MAY LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
403 
WWUS72 KCHS 021655
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1155 AM EST MON JAN 2 2012

SCZ045-030100-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1155 AM EST MON JAN 2 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: WEST AND NORTHWEST AT 15 KNOTS WITH GUSTS UP TO 25 KNOTS
  ALONG THE LAKESHORE THIS AFTERNOON...INCREASING TO 20 TO 30 KT TONIGHT
  WITH GUSTS UP TO 40 KT ON THE OPEN LAKE WATERS.

* WAVES: 1 TO 2 FEET THIS AFTERNOON...BUILDING TO 2 TO 3 FT TONIGHT.

* TIMING: GUSTY WINDS ARE LIKELY TODAY BUT THE STRONGEST WINDS 
  WITH THE ONSET OF MUCH COLDER AIR OVER WARMER LAKE WATERS 
  OCCURRING TONIGHT. 

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE TODAY...
ESPECIALLY ON THE OPEN LAKE WATERS. DANGEROUS CONDITIONS ARE
EXPECTED TONIGHT WITH ROUGH WAVES AND WINDS POTENTIALLY OVER
40 MPH AT TIMES. STRONG WINDS MAY LEAD TO LARGE WAVES WHICH CAN
CAPSIZE BOATS.

&&

$$
545 
WWUS72 KCHS 022053
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
353 PM EST MON JAN 2 2012

SCZ045-030500-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
353 PM EST MON JAN 2 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: NORTHWEST 25 TO 30 KT WITH GUSTS UP TO 40 KT ON THE OPEN
  LAKE WATERS.

* WAVES: BUILDING TO 2 TO 3 FT.

* TIMING: THIS EVENING THROUGH TUESDAY MORNING.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE TODAY...
ESPECIALLY ON THE OPEN LAKE WATERS. DANGEROUS CONDITIONS ARE
EXPECTED TONIGHT WITH ROUGH WAVES AND WINDS POTENTIALLY OVER
40 MPH AT TIMES. STRONG WINDS MAY LEAD TO LARGE WAVES WHICH CAN
CAPSIZE BOATS.

&&

$$
120 
WWUS72 KCHS 022301
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
601 PM EST MON JAN 2 2012

SCZ045-030715-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
601 PM EST MON JAN 2 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: NORTHWEST 25 TO 30 KT WITH GUSTS UP TO 40 KT ON THE 
  OPEN LAKE WATERS. 

* WAVES: BUILDING TO 2 TO 3 FT...PERHAPS EVEN 4 FT IN EXPOSED
  AREAS ON THE SOUTHEAST PORTION OF THE LAKE. 

* TIMING: TONIGHT THROUGH TUESDAY EVENING.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE TONIGHT AND
TUESDAY...ESPECIALLY ON THE OPEN LAKE WATERS. DANGEROUS
CONDITIONS ARE EXPECTED TONIGHT WITH ROUGH WAVES AND WINDS
POTENTIALLY OVER 40 MPH AT TIMES. STRONG WINDS MAY LEAD TO LARGE
WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
862 
WWUS72 KCHS 022325
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
625 PM EST MON JAN 2 2012

SCZ045-030730-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
625 PM EST MON JAN 2 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: BECOMING NORTHWEST AND INCREASING TO 25 TO 30 KT WITH
  GUSTS UP TO 40 KT ON THE OPEN LAKE WATERS.

* WAVES: BUILDING TO 2 TO 3 FT...PERHAPS EVEN 4 FT IN EXPOSED 
  AREAS ON THE SOUTHEAST PORTION OF THE LAKE. 

* TIMING: TONIGHT THROUGH TUESDAY EVENING...WITH HIGHEST WINDS
  AFTER MIDNIGHT INTO TUESDAY AFTERNOON.

* IMPACTS: THE COMBINATION OF INCREASING WINDS AND WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE TONIGHT AND
TUESDAY...ESPECIALLY ON THE OPEN LAKE WATERS. DANGEROUS
CONDITIONS ARE EXPECTED TONIGHT WITH ROUGH WAVES AND WINDS
POTENTIALLY OVER 40 MPH AT TIMES. STRONG WINDS MAY LEAD TO LARGE
WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
506 
WWUS72 KCHS 030303
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1003 PM EST MON JAN 2 2012

SCZ045-031115-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1003 PM EST MON JAN 2 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST TUESDAY
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: BECOMING NORTHWEST AND INCREASING TO 25 TO 30 KT WITH 
  GUSTS UP TO 40 KT ON THE OPEN LAKE WATERS. 

* WAVES: BUILDING TO 2 TO 3 FT...PERHAPS EVEN 4 FT IN EXPOSED 
  AREAS ON THE SOUTHEAST PORTION OF THE LAKE. 

* TIMING: THROUGH TUESDAY EVENING...WITH HIGHEST WINDS AFTER
  MIDNIGHT INTO TUESDAY AFTERNOON.

* IMPACTS: THE COMBINATION OF STRONG WINDS AND LARGE WAVES WILL
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD USE EXTRA CAUTION ON LAKE MOULTRIE THROUGH LATE 
TUESDAY...ESPECIALLY ON THE OPEN LAKE WATERS. DANGEROUS CONDITIONS
ARE EXPECTED WITH ROUGH WAVES AND WINDS POTENTIALLY GUSTING AS
HIGH AS 40 KT AT TIMES. STRONG WINDS MAY LEAD TO LARGE WAVES WHICH
CAN CAPSIZE BOATS.

&&

$$
342 
WWUS72 KCHS 030850
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
350 AM EST TUE JAN 3 2012

SCZ045-031700-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
350 AM EST TUE JAN 3 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS
EVENING FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: NORTHWEST 25 TO 30 KT WITH GUSTS UP TO 40 KT.

* WAVES: 2 TO 3 FT...PERHAPS EVEN 4 FT IN EXPOSED AREAS ON THE
  SOUTHEAST PORTION OF THE LAKE.

* TIMING: THROUGH EARLY THIS EVENING...WITH HIGHEST WINDS AFTER 
  THIS MORNING.

* IMPACTS: THE COMBINATION OF STRONG WINDS AND LARGE WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD EXPECT DANGEROUS CONDITIONS WITH ROUGH WAVES AND
WINDS GUSTING AS HIGH AS 40 KT AT TIMES THIS MORNING. STRONG WINDS
MAY LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
124 
WWUS72 KCHS 031551
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1051 AM EST TUE JAN 3 2012

SCZ045-032300-
/O.CON.KCHS.LW.Y.0001.000000T0000Z-120103T2300Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1051 AM EST TUE JAN 3 2012

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 6 PM EST THIS
EVENING FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: NORTHWEST 15 TO 20 KT WITH GUSTS UP TO 25 KT.

* WAVES: 2 TO 3 FT...DIMINISHING TO 1 TO 2 FT LATE.

* TIMING: THROUGH EARLY THIS AFTERNOON.

* IMPACTS: THE COMBINATION OF STRONG WINDS AND LARGE WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD EXPECT DANGEROUS CONDITIONS WITH ROUGH WAVES AND
WINDS GUSTING AS HIGH AS 40 KT AT TIMES THIS MORNING. STRONG
WINDS MAY LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
427 
WWUS72 KCHS 032023
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
323 PM EST TUE JAN 3 2012

SCZ045-040000-
/O.EXT.KCHS.LW.Y.0001.000000T0000Z-120104T0000Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
323 PM EST TUE JAN 3 2012

...LAKE WIND ADVISORY NOW IN EFFECT UNTIL 7 PM EST THIS EVENING
FOR LAKE MOULTRIE...

* HAZARDS: STRONG WINDS AND CHOPPY WAVES.

* WINDS: NORTHWEST 15 TO 20 KT WITH GUSTS UP TO 25 KT.

* WAVES: 2 TO 3 FT...DIMINISHING TO 1 TO 2 FT LATE.

* TIMING: THROUGH EARLY THIS EVENING.

* IMPACTS: THE COMBINATION OF STRONG WINDS AND LARGE WAVES WILL 
  MAKE CONDITIONS HAZARDOUS FOR SMALL CRAFT ON THE LAKE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MARINERS SHOULD EXPECT DANGEROUS CONDITIONS WITH ROUGH WAVES AND
WINDS GUSTING AS HIGH AS 25 KT THROUGH EARLY THIS EVENING. STRONG
WINDS MAY LEAD TO LARGE WAVES WHICH CAN CAPSIZE BOATS.

&&

$$
153 
WWUS72 KCHS 032348
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
648 PM EST TUE JAN 3 2012

SCZ045-040100-
/O.EXP.KCHS.LW.Y.0001.000000T0000Z-120104T0000Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
648 PM EST TUE JAN 3 2012

...LAKE WIND ADVISORY WILL EXPIRE AT 7 PM EST THIS EVENING FOR
LAKE MOULTRIE...

$$

What forecasters said that day

The local office's own words before this lake wind advisory 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 lake wind advisory went out at Jan 1, 12:52 AM EST, 3 hours 24 minutes earlier.

Area forecast discussion, Jan 1, 12:52 AM EST, 3 hours 24 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
1252 AM EST SUN JAN 1 2012

.SYNOPSIS...
A POLAR COLD FRONT WILL PUSH THROUGH THE AREA BY LATE
SUNDAY...FOLLOWED BY AN ARCTIC COLD FRONT MOVING ACROSS THE REGION
LATE MONDAY. COLD ARCTIC HIGH PRESSURE WILL THEN BUILD INTO THE
SOUTHEAST STATES THROUGH MID WEEK BEFORE SHIFTING OFF THE COAST BY
LATE IN THE WEEK.

&&

.NEAR TERM /UNTIL 6 AM THIS MORNING/...
ON OUR 1 AM UPDATE...WE CONTINUE TO LOWER OVERNIGHT TEMPS. SOME
AREAS LIKE N CHARLESTON ALREADY HAVE FALLEN BELOW EARLIER MIN
PROGS. INCREASING WARM ADVECTION OVER THE SHALLOW SURFACE LAYER
SHOULD BEGIN TO STABILIZE READINGS AFTER 3 AM.

CLEAR SKIES AND LIGHT WINDS WILL DOMINATE TONIGHT WITH THE AREA
POSITIONED ALONG THE NORTHERN FRINGES OF HIGH PRESSURE CENTERED
OVER FLORIDA. A LIGHT MEAN SOUTHWEST FLOW WILL ALLOW LOW-LEVEL
MOISTURE TO GRADUALLY RETURN. THERE ARE SOME SIGNALS IN THE HIGHER
RESOLUTION DATA SETS THAT DENSE FOG WILL DEVELOP ACROSS MUCH OF
NORTHERN FLORIDA AND FAR SOUTHERN GEORGIA LATER THIS EVENING...SOME
OF WHICH COULD OOZE INTO THE FAR SOUTHERN COUNTIES PRIOR TO
DAYBREAK. LAV GUIDANCE BULLETINS FOR FORT STEWART /KLHW/ AND
VIDALIA /KVDI/ SHOWS ABOUT A 3-4 HOUR WINDOW OF VSBYS 1/4-1/2 MILE
AND THE 31/18Z GFS STATISTICAL GUIDANCE PACKAGES FOR BOTH SITES SHOW
CATEGORY 1 VSBYS AT 01/12Z. CERTAINLY LOOKS LIKE A BORDERLINE
EVENT AT THIS POINT WITH THE MOST FAVORABLE FOG PARAMETERS
DISPLACED TO THE SOUTH...BUT ITS CERTAINLY SOMETHING WE WILL BE
CAREFULLY WATCHING OVERNIGHT. HAVE ADDED A MENTION OF PATCHY FOG
ACROSS THE FAR SOUTHERN COUNTIES TO TREND.

THE TEMPERATURE FORECAST IS SOMEWHAT PROBLEMATIC AS LOW- LEVEL
MOISTURE WILL SLOWLY INCREASE UNDER IDEAL RADIATIONAL CONDITIONS.
LATE EVENING TEMPERATURES WERE ALREADY APPROACHING FORECASTED MINS
ACROSS FAR INTERIOR AREAS SO HAVE ADJUSTED TEMPERATURES DOWN A FEW
DEGREES AND INTRODUCED SOME UPPER 30S ACROSS PORTIONS OF
JENKINS...SCREVEN...ALLENDALE AND HAMPTON COUNTIES. HAVE ALSO
NUDGE TEMPERATURES UP A DEGREE OR TWO ACROSS THE FAR SOUTH WHERE
DEWPOINT DEPRESSIONS WERE ALREADY NEAR ZERO.

&&

.SHORT TERM /6 AM THIS MORNING THROUGH TUESDAY/...
SUNDAY...A NORTH-SOUTH ALIGNED SURFACE RISK ACROSS THE AREA IN THE
MORNING WILL SHIFT EAST DURING THE AFTERNOON...AS A POLAR COLD FRONT
AND ITS ASSOCIATED TROUGH ALOFT MOVES IN FROM THE WEST AND NW. PWATS
DO REACH AS HIGH AS NEAR 0.8 INCHES IN THE AFTERNOON AS THE FRONT
DRAWS CLOSER. THIS IS IN RESPONSE TO A SW FLOW IN THE BOUNDARY LAYER
WHICH WILL PRODUCE AN INCREASE IN CUMULUS AND STRATOCUMULUS DURING
THE DAY. WEAK LOW LEVEL THETA-E ADVECTION WILL OCCUR AHEAD OF THE
FRONT...AND THAT MIGHT BE ENOUGH TO SPUR A COUPLE OF ISOLATED
SHOWERS. BUT GIVEN THAT DEW POINT DEPRESSIONS WILL BE AT LEAST 15
DEGREES...WE PREFER TO MAINTAIN A RAIN FREE FORECAST. THE FIRST DAY
OF 2012 WILL START THE NEW YEAR WITH TEMPS FAR ABOVE NORMAL...AS LOW
LEVEL THICKNESS VALUES SUPPORT MAX TEMPS THAT WILL MAKE IT FEEL MORE
SPRINGLIKE. ALTHOUGH THE CLOUDS MOVING IN FROM THE WEST WITH THE
FRONT WILL RESTRICT INSOLATION SOMEWHAT...THIS IS OFFSET BY
COMPRESSIONAL HEATING. THUS WE/LL CARRY MAX TEMPS IN THE LOWER AND
MIDDLE 70S...WARMEST OVER THE FAR SE CORNER OF GA. THE COLD FRONT
PUSHES INTO THE ATLANTIC SUNDAY NIGHT...AND COLD ADVECTION WILL DROP
OVERNIGHT LOWS DOWN INTO THE MID AND UPPER 30S MOST COMMUNITIES AWAY
FROM THE COAST.

MONDAY...THE TROUGH ALOFT WILL BECOME MORE AMPLIFIED AS A 120-130 KT
UPPER JET PUSHES SE INTO THE TROUGH OVER THE EASTERN STATES. THESE
FEATURES WILL ALSO SEND AN ARCTIC COLD FRONT INTO THE AREA BY LATE
IN THE DAY...THEN OFF THE COAST AT NIGHT. IT/S BACK TO REALITY ON
MONDAY...AS COLD ADVECTION PERSISTS THROUGH THE DAY...DROPPING OUR
850 MB TEMPS DOWN TO NEAR -5C NORTH AND TO NEAR 0C SOUTH BY DAYS
END. WE/RE A LITTLE UNCERTAIN ON HOW MAX TEMPS WILL PAN OUT GIVEN
THIS COLD ADVECTION...AND THE FACT THAT LOW LEVEL THICKNESSES AND
SOUNDING DATA SUPPORTS MAX TEMPS ONLY IN THE UPPER 40S AND LOWER
50S. BUT GIVEN PLENTY OF SUNSHINE...A DOWNSLOPE WESTERLY FLOW OFF
THE APPALACHIANS AND THE FACT THAT THE AIR MASS WILL NOT BE
TRAVELING ACROSS MUCH IF ANY SNOW COVER...WE CHOOSE TO KEEP TEMPS IN
THE LOWER AND MIDDLE 50S. EVEN SO...THIS IS ACTUALLY BELOW NORMAL
AND WILL BE THE COOLEST DAY WE HAVE EXPERIENCED IN AT LEAST 3
WEEK. MONDAY WILL BE A BREEZY DAY...AS WEST WINDS AVERAGE 15-25
MPH.

THE BRUNT OF THE COLD AIR WILL POUR IN MONDAY NIGHT...AS THE BASE OF
THE LOW AND MID LEVEL TROUGH AND THE ARCTIC FRONT SWINGS THROUGH.
850 MB TEMPS WILL PLUNGE TO AS LOW AS -12 OR -13C NORTH...AND DOWN
TO -7 OR -8C SOUTH. THIS ALONG WITH THE LOW LEVEL THICKNESS VALUES
OF 1260-1270 METERS INDICATES THAT TEMPS COME TUESDAY MORNING WILL
BE HAVE PLUMMETED DOWN INTO THE MID AND UPPER 20S WEST OF
US-17...WITH EVEN 30-33 AT AND ALONG THE COAST. COMBINED WITH STEADY
ISALLOBARIC PRESSURE RISES KEEPING WINDS UP THROUGH THE
NIGHT...WE/RE ANTICIPATING WIND CHILLS DOWN BETWEEN 14 AND 18
DEGREES IN MOST AREAS NEAR DAWN. NOT WIND CHILL ADVISORY
CRITERIA...BUT PLENTY COLD.

TUESDAY...THE TROUGH ALOFT LIFTS EAST INTO THE ATLANTIC...WITH THE
FORECAST AREA WITHIN THE RESULTING COLD NW FLOW IN ITS WAKE. FULL
SUNSHINE WILL DO LITTLE TO WARM US ANY MORE THAN THE LOWER AND
MIDDLE 40S...ALTHOUGH LOW LEVEL THICKNESS VALUES SUGGESTS WE MIGHT
EVEN STRUGGLE TO REACH 40 IN MANY LOCATIONS. THIS WILL BE
RE-EVALUATED IN LATER FORECASTS TO SEE IF TEMPS NEED TO BE TRIMMED
MORE. BREEZY CONDITIONS IN THE MORNING WILL SUPPORT WIND CHILLS DOWN
IN THE TEENS AND 20S THROUGH 11 AM OR 12 PM.

LAKE WIND ADVISORY CONDITIONS APPEAR A CERTAINTY FOR LATE MONDAY OR
MONDAY NIGHT INTO TUESDAY...WHEN THE BEST MIXING OF THE COLDER AIR
OVER THE RELATIVELY WARMER LAKE WATERS WILL OCCUR.

&&

.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...
THE COLDEST AIR OF THE SEASON IS EXPECTED TUESDAY NIGHT. LATEST
MODEL RUNS SUPPORT THE SURFACE RIDGE EXTENDING ACROSS THE AREA BY
WEDNESDAY MORNING. THIS WILL ALMOST CERTAINLY RESULT IN DECOUPLING
OF THE SURFACE WINDS AND WITH CLEAR SKIES AND DEWPOINTS IN THE TEENS
WILL RESULT IN NEARLY OPTIMAL RADIATION COOLING CONDITIONS. AS A
RESULT...HAVE INDICATED UPPER TEENS TO LOWER 20S ACROSS MOST AREAS
AWAY FROM THE THE COAST. THE ONLY HOPE TO KEEP TEMPERATURES UP A
LITTLE IS SOME HIGH LEVEL CLOUDINESS SPREADS ACROSS THE AREA. A
GRADUAL WARM UP COMMENCES ON WEDNESDAY AND CONTINUES THROUGH THE END
OF THE WEEK. AT THE PRESENT TIME IT LOOKS DRY AS THE NEXT SYSTEM TO
IMPACT THE AREA WILL NOT ARRIVE UNTIL BEYOND THIS FORECAST PERIOD.

&&

.AVIATION /06Z SUNDAY THROUGH THURSDAY/...
VFR CONDITIONS WILL DOMINATE AT KCHS/KSAV THROUGH 06Z/02. COULD
SEE A BRIEF STINT OF LIGHT GROUND FOG AT BOTH TERMINALS JUST
BEFORE SUNRISE. WE INTRODUCED SOME SURFACE WIND GUSTS FROM THE
SW THIS AFTERNOON...OCCASIONALLY 20 KT AT KCHS AND 15-18 KT AT
KSAV.

EXTENDED AVIATION OUTLOOK...GUSTY SURFACE WINDS FROM THE WEST AND
NORTHWEST ARE EXPECTED MONDAY AND TUESDAY. LOW-LEVEL WIND SHEAR
MAY ALSO BE A CONCERN MONDAY NIGHT.

&&

.MARINE...
LIGHT WINDS WILL DOMINATE THE MARINE AREA THROUGH SUNRISE. WINDS
WILL GENERALLY BE 5-10 KT WITH SEAS 1-2 FT.

HIGH PRESSURE ACROSS THE MARINE AREA EARLY SUNDAY WILL GIVE WAY TO A
COLD FRONT LATE IN THE DAY AND IN THE EVENING. CONDITIONS WILL BE
FAIRLY BENIGN THE FIRST HALF OF THE DAY...BEFORE SW WINDS AND ITS
RESULTING SEAS BEGIN TO CLIMB LATER IN THE DAY AS THE FRONT DRAW
CLOSER. WE/LL SEE WINDS AS HIGH AS 15 OR 20 KT BY LATE IN THE
DAY...WITH SEAS TO BUILD AS HIGH AS 3 OR 4 FT.

IN WAKE OF THE FIRST COLD FRONT SUNDAY NIGHT WINDS VEER AROUND TO
THE WEST AND NW. THE RESULTING COLD ADVECTION WILL PRODUCE WINDS
INCREASING TO NEAR 20 OR 25 KT...WHICH IN TURN CAUSE SEAS TO BUILD
ABOUT ANOTHER FOOT OR TWO. WE/LL BE VERY CLOSE TO NEEDING AN SCA
ACROSS AMZ350-374...BUT GIVEN THAT IT/S MARGINAL AND A THIRD PERIOD
FORECAST WILL HOLD OFF ON ANY ADVISORY FLAGS AT THIS TIME.

WINDS AND SEAS WILL BE IN A FAIRLY STEADY STATE MONDAY...WAITING FOR
THE ARCTIC FRONT AND THE STRONGEST COLD ADVECTION TO ARRIVE LATE IN
THE DAY OR EARLY AT NIGHT. PRESSURE RISES AVERAGE AROUND 1-2 MB
EVERY 3 HOURS...WITH A TIGHT PRESSURE GRADIENT TO PREVAIL. THAT
ALONG WITH GEOSTROPHIC WINDS OF 35-45 KT...AND THE COLD AIR SURGING
IN ACROSS THE WARMER ATLANTIC...WE ANTICIPATE THAT GALES WATCHES
AND WARNINGS WILL BE NEEDED ACROSS MOST IF NOT ALL COASTAL
WATERS FOR THE EVENT. SEAS WILL BE SOMEWHAT LIMITED NEAR THE
COAST DUE TO THE OFFSET FETCH...BUT WILL STILL REACH AROUND 5 OR 6
FT NEAR 20 NM OUT...AND UP TO 9 OR 10 FT NEAR THE 60 NM FORECAST
LIMIT OFF THE GA COAST.

WINDS AND SEAS WILL REMAIN ELEVATED TUESDAY MORNING...WITH A SLOW
DIMINISHING TREND THEREAFTER AS HIGH PRESSURE PUSHES IN FROM THE
WEST. LINGERING GALES AND/OR SCA/S WILL LIKELY BE DOWNGRADED FOR
THE AFTERNOON AND AT NIGHT.

MARINERS ARE ADVISED THAT WITH TEMPS DOWN IN THE MID 30S TO LOWER
40S LATE MONDAY NIGHT AND TUESDAY MORNING...WHEN COMBINED WITH THE
STRONG WINDS...THAT WIND CHILLS WILL BE MAINLY IN THE 20S DURING
THIS TIME.

GRADUALLY IMPROVING CONDITIONS ARE THEN EXPECTED THROUGH WEDNESDAY
NIGHT.

&&

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

&&
Hazardous weather outlook, Dec 31, 5:56 PM EST, 10 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
556 PM EST SAT DEC 31 2011

GAZ087-088-099>101-114>119-137>141-SCZ040-042>044-047>052-012300-
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-CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
556 PM EST SAT DEC 31 2011

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

SCZ045-012300-
INLAND BERKELEY-
556 PM EST SAT DEC 31 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

LAKE WIND ADVISORY CONDITIONS WITH WINDS IN EXCESS OF 20 KNOTS ARE
EXPECTED MONDAY NIGHT AND INTO TUESDAY. A LAKE WIND ADVISORY WILL
LIKELY BE NEEDED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AMZ330-350-352-354-012300-
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-
556 PM EST SAT DEC 31 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

GALE FORCE WINDS ARE LIKELY MONDAY NIGHT AND INTO TUESDAY. GALE
WATCHES AND WARNINGS MAY EVENTUALLY BE NEEDED AS THE EVENT DRAWS
CLOSER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AMZ374-012300-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
556 PM EST SAT DEC 31 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

GALE FORCE WINDS ARE EXPECTED MONDAY NIGHT AND INTO TUESDAY. GALE
WATCHES AND WARNINGS WILL EVENTUALLY BE NEEDED AS THE EVENT DRAWS
CLOSER.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

Nearby

Lake Wind Advisories in South Carolina, 2012Every lake wind advisory in 2012

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.