Alert archive / South Carolina / Dense Smoke Advisories in 2011

Dense Smoke Advisory 2, NWS Charleston, SC

February 17, 2011Berkeley County, South Carolina

NWS Charleston, SC issued this dense smoke advisory at Feb 17, 2011, 4:14 PM EST for Berkeley County, South Carolina. It took effect at Feb 18, 2011, 12:00 AM EST. It was in force for 9 hr.

The area

The counties it named.

The facts

Issued
Feb 17, 2011, 4:14 PM EST (21:14 UTC)
In effect from
Feb 18, 2011, 12:00 AM EST
Expired
Feb 18, 2011, 9:00 AM EST
In force
9 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 21:16 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, 9.2 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 12:00Z on 2011-02-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 108 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2011-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
108 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
773 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
117 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.

303 
WWUS72 KCHS 172114
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
414 PM EST THU FEB 17 2011

SCZ045-180500-
/O.NEW.KCHS.SM.Y.0002.110218T0500Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
414 PM EST THU FEB 17 2011

...DENSE SMOKE ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EST FRIDAY...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS ISSUED A DENSE
SMOKE ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM
EST FRIDAY. 

* TIMING: SMOKE CAUSED BY PRESCRIBED BURNING BEING CONDUCTED BY
  THE UNITED STATES FOREST SERVICE IS EXPECTED TO INCREASE IN
  COVERAGE AND DENSITY TONIGHT. THE WORST VISIBILITY IS EXPECTED
  BETWEEN ABOUT 3 AND 7 AM.

* VISIBILITY: ONE QUARTER MILE OR LESS.

* IMPACTS: AT THIS POINT NO ROADS HAVE BEEN CLOSED BUT THE FOREST
  SERVICE INDICATED THEY MAY HAVE TO CLOSE WITHERBEE ROAD BETWEEN
  HIGHWAY 402 AND ALLIGATOR ROAD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND FOLLOW INSTRUCTIONS OF TRAFFIC CONTROL AUTHORITIES. USE
LOW BEAM HEADLIGHTS AND REDUCE DRIVING SPEEDS. LEAVE PLENTY OF
DISTANCE AHEAD OF YOU IN CASE A SUDDEN STOP IS NEEDED. BE PREPARED
FOR POSSIBLE ROAD CLOSURES.

&&

$$
7 follow-up statements
814 
WWUS72 KCHS 180100
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
800 PM EST THU FEB 17 2011

GAZ119-SCZ048>052-180900-
/O.NEW.KCHS.FG.Y.0005.110218T0100Z-110218T1400Z/
COASTAL CHATHAM-BEAUFORT-COASTAL COLLETON-CHARLESTON-
COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF...TYBEE ISLAND...BEAUFORT...HILTON HEAD...
EDISTO BEACH...CHARLESTON...JASPER...DANIEL ISLAND...
NAVAL WEAPONS STATION CHARLESTON
800 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST FRIDAY...

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

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS
  EVENING AS DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC.
  VISIBILITIES NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS
  THE CHARLESTON HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH
  HARBOR AND THE COOPER...ASHLEY...WANDO...STONO AND BROAD RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS DRIVING TRAVEL
  CONDITIONS.

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.

&&

$$

SCZ045-180900-
/O.CON.KCHS.SM.Y.0002.110218T0500Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
800 PM EST THU FEB 17 2011

...DENSE SMOKE ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 9 AM EST FRIDAY...

A DENSE SMOKE ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST FRIDAY. 

* TIMING: SMOKE CAUSED BY PRESCRIBED BURNING BEING CONDUCTED BY 
  THE UNITED STATES FOREST SERVICE IS EXPECTED TO INCREASE IN 
  COVERAGE AND DENSITY TONIGHT. THE WORST VISIBILITY IS EXPECTED 
  BETWEEN ABOUT 3 AND 7 AM. 

* VISIBILITY: ONE QUARTER MILE OR LESS.

* IMPACTS: AT THIS POINT NO ROADS HAVE BEEN CLOSED BUT THE 
  FOREST SERVICE INDICATED THEY MAY HAVE TO CLOSE WITHERBEE ROAD 
  BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND FOLLOW INSTRUCTIONS OF TRAFFIC CONTROL AUTHORITIES.
USE LOW BEAM HEADLIGHTS AND REDUCE DRIVING SPEEDS. LEAVE PLENTY
OF DISTANCE AHEAD OF YOU IN CASE A SUDDEN STOP IS NEEDED. BE
PREPARED FOR POSSIBLE ROAD CLOSURES.

&&

$$
602 
WWUS72 KCHS 180155
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
855 PM EST THU FEB 17 2011

GAZ117-139>141-181000-
/O.EXA.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
COASTAL BRYAN-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
INCLUDING THE CITIES OF...FORT MCALLISTER...HALFMOON LANDING...
TOWNSEND...DARIEN
855 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST FRIDAY...

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

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS
  EVENING AS DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC.
  VISIBILITIES NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS
  THE CHARLESTON HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH
  HARBOR AND THE COOPER...ASHLEY...WANDO...STONO...BROAD AND
  ALTAMAHA RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS DRIVING 
  TRAVEL CONDITIONS. 

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.

&&

$$

GAZ119-SCZ048>052-181000-
/O.CON.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
COASTAL CHATHAM-BEAUFORT-COASTAL COLLETON-CHARLESTON-
COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF...TYBEE ISLAND...BEAUFORT...HILTON HEAD...
EDISTO BEACH...CHARLESTON...JASPER...DANIEL ISLAND...
NAVAL WEAPONS STATION CHARLESTON
855 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST FRIDAY...

A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST FRIDAY. 

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS
  EVENING AS DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC.
  VISIBILITIES NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS
  THE CHARLESTON HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH
  HARBOR AND THE COOPER...ASHLEY...WANDO...STONO...BROAD AND
  ALTAMAHA RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS DRIVING 
  TRAVEL CONDITIONS. 

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.

&&

$$

SCZ045-181000-
/O.CON.KCHS.SM.Y.0002.110218T0500Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
855 PM EST THU FEB 17 2011

...DENSE SMOKE ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT
TO 9 AM EST FRIDAY...

A DENSE SMOKE ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO
9 AM EST FRIDAY. 

* TIMING: SMOKE CAUSED BY PRESCRIBED BURNING BEING CONDUCTED BY 
  THE UNITED STATES FOREST SERVICE IS EXPECTED TO INCREASE IN 
  COVERAGE AND DENSITY TONIGHT. THE WORST VISIBILITY IS EXPECTED 
  BETWEEN ABOUT 3 AND 7 AM. 

* VISIBILITY: ONE QUARTER MILE OR LESS.

* IMPACTS: AT THIS POINT NO ROADS HAVE BEEN CLOSED BUT THE 
  FOREST SERVICE INDICATED THEY MAY HAVE TO CLOSE WITHERBEE ROAD 
  BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND FOLLOW INSTRUCTIONS OF TRAFFIC CONTROL AUTHORITIES.
USE LOW BEAM HEADLIGHTS AND REDUCE DRIVING SPEEDS. LEAVE PLENTY
OF DISTANCE AHEAD OF YOU IN CASE A SUDDEN STOP IS NEEDED. BE
PREPARED FOR POSSIBLE ROAD CLOSURES.

&&

$$
199 
WWUS72 KCHS 180330
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
1030 PM EST THU FEB 17 2011

SCZ045-181130-
/O.EXA.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
/O.CON.KCHS.SM.Y.0002.110218T0500Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
1030 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST FRIDAY...
...DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST FRIDAY...

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

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS AS
  DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC. VISIBILITIES
  NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS THE CHARLESTON
  HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH HARBOR AND THE
  COOPER...ASHLEY...WANDO...STONO...BROAD AND ALTAMAHA RIVERS. IN
  ADDITION...THE FOG WILL MIX WITH DENSE SMOKE ACROSS THE WESTERN
  PORTIONS OF THE FRANCIS MARION NATIONAL FOREST WHERE THE UNITED
  STATES FOREST SERVICE IS CONDUCTING PRESCRIBED BURN ACTIVITIES.

* IMPACTS: THE UNITED STATES FOREST SERVICE MAY CLOSE WITHERBEE
  ROAD BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD DUE TO DENSE SMOKE.
  OTHERWISE...POOR VISIBILITIES FROM DENSE FOG WILL CREATE
  HAZARDOUS TRAVEL CONDITIONS ELSEWHERE ACROSS INLAND BERKELEY
  COUNTY. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND FOLLOW INSTRUCTIONS OF TRAFFIC CONTROL AUTHORITIES.
USE LOW BEAM HEADLIGHTS AND REDUCE DRIVING SPEEDS. LEAVE PLENTY
OF DISTANCE AHEAD OF YOU IN CASE A SUDDEN STOP IS NEEDED. BE
PREPARED FOR POSSIBLE ROAD CLOSURES.

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.

&&

$$

GAZ101-116-118-138-SCZ042>044-047-181130-
/O.EXA.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
EFFINGHAM-INLAND BRYAN-INLAND CHATHAM-INLAND LIBERTY-HAMPTON-
INLAND COLLETON-DORCHESTER-INLAND JASPER-
INCLUDING THE CITIES OF...SPRINGFIELD...PEMBROKE...SAVANNAH...
HINESVILLE...HAMPTON...WALTERBORO...ST. GEORGE...SUMMERVILLE...
RIDGELAND
1030 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EST FRIDAY...

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

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS AS
  DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC. VISIBILITIES
  NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS THE CHARLESTON
  HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH HARBOR AND THE
  COOPER...ASHLEY...WANDO...STONO...BROAD AND ALTAMAHA RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL
  CONDITIONS.

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.

&&

$$

GAZ117-119-139>141-SCZ048>052-181130-
/O.CON.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
COASTAL BRYAN-COASTAL CHATHAM-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-BEAUFORT-COASTAL COLLETON-CHARLESTON-
COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF...FORT MCALLISTER...TYBEE ISLAND...
HALFMOON LANDING...TOWNSEND...DARIEN...BEAUFORT...HILTON HEAD...
EDISTO BEACH...CHARLESTON...JASPER...DANIEL ISLAND...
NAVAL WEAPONS STATION CHARLESTON
1030 PM EST THU FEB 17 2011

...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST FRIDAY...

A DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST FRIDAY. 

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS THIS AS
  DENSE SEA FOG MOVES INLAND FROM OFF THE ATLANTIC. VISIBILITIES
  NEAR ZERO WILL OCCUR NEAR BODIES OF WATER SUCH AS THE CHARLESTON
  HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH HARBOR AND THE
  COOPER...ASHLEY...WANDO...STONO...BROAD AND ALTAMAHA RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL
  CONDITIONS.

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.

&&

$$
316 
WWUS72 KCHS 180843
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
343 AM EST FRI FEB 18 2011

SCZ045-181400-
/O.CAN.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
/O.CON.KCHS.SM.Y.0002.000000T0000Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
343 AM EST FRI FEB 18 2011

...DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...
...DENSE FOG ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS CANCELLED THE
DENSE FOG ADVISORY. A DENSE SMOKE ADVISORY REMAINS IN EFFECT
UNTIL 9 AM EST THIS MORNING. 

* VISIBILITY: AREAS OF FOG WILL MIX WITH DENSE SMOKE ACROSS THE
  WESTERN PORTIONS OF THE FRANCIS MARION NATIONAL FOREST WHERE THE
  UNITED STATES FOREST SERVICE IS CONDUCTING PRESCRIBED BURN
  ACTIVITIES.

* IMPACTS: THE UNITED STATES FOREST SERVICE MAY CLOSE WITHERBEE ROAD
  BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD DUE TO DENSE SMOKE.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND ALLOW FOR EXTRA TRAVEL TIME. USE LOW BEAM HEADLIGHTS
AND REDUCE DRIVING SPEEDS. LEAVE PLENTY OF DISTANCE AHEAD OF YOU
IN CASE A SUDDEN STOP IS NEEDED. FOLLOW INSTRUCTIONS OF TRAFFIC
CONTROL AUTHORITIES.

&&

$$

SCZ042>044-180945-
/O.CAN.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
HAMPTON-INLAND COLLETON-DORCHESTER-
INCLUDING THE CITIES OF...HAMPTON...WALTERBORO...ST. GEORGE...
SUMMERVILLE
343 AM EST FRI FEB 18 2011

...DENSE FOG ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS CANCELLED THE
DENSE FOG ADVISORY. 

PATCHY DENSE FOG MAY STILL DEVELOP NEAR DAYBREAK THIS MORNING 
BUT FOG REDUCING VISIBILITIES BELOW 1/2 MILE ARE NOT EXPECTED
TO BECOME WIDESPREAD.

$$

GAZ099-100-114-115-137-181400-
/O.EXA.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
CANDLER-BULLOCH-TATTNALL-EVANS-LONG-
INCLUDING THE CITIES OF...METTER...STATESBORO...REIDSVILLE...
CLAXTON...LUDOWICI
343 AM EST FRI FEB 18 2011

...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. 

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS AS AREAS
  OF DENSE FOG DEVELOP AND EXPAND PRIOR TO DAYBREAK. 

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL CONDITIONS.

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.

&&

$$

GAZ101-116>119-138>141-SCZ047>052-181400-
/O.CON.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
EFFINGHAM-INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-
COASTAL CHATHAM-INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-
COASTAL MCINTOSH-INLAND JASPER-BEAUFORT-COASTAL COLLETON-
CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF...SPRINGFIELD...PEMBROKE...
FORT MCALLISTER...SAVANNAH...TYBEE ISLAND...HINESVILLE...
HALFMOON LANDING...TOWNSEND...DARIEN...RIDGELAND...BEAUFORT...
HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER...
DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON
343 AM EST FRI FEB 18 2011

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

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

* VISIBILITY: VISIBILITIES WILL BE 1/4 MILE OR LESS POCKETS OF
  DENSE SEA FOG LINGER ALONG THE COASTAL COUNTIES. NEAR ZERO
  VISIBILITIES WILL OCCUR NEAR BODIES OF WATER SUCH AS THE
  CHARLESTON HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH
  HARBOR AND THE COOPER...ASHLEY...WANDO...STONO...BROAD AND
  ALTAMAHA RIVERS.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL  
  CONDITIONS.

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.

&&

$$
652 
WWUS72 KCHS 181129
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
629 AM EST FRI FEB 18 2011

GAZ099>101-114>119-137>141-SCZ047>052-181400-
/O.CON.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-INLAND BRYAN-
COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-INLAND LIBERTY-
COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-INLAND JASPER-
BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
INCLUDING THE CITIES OF...METTER...STATESBORO...SPRINGFIELD...
REIDSVILLE...CLAXTON...PEMBROKE...FORT MCALLISTER...SAVANNAH...
TYBEE ISLAND...LUDOWICI...HINESVILLE...HALFMOON LANDING...
TOWNSEND...DARIEN...RIDGELAND...BEAUFORT...HILTON HEAD...
EDISTO BEACH...CHARLESTON...JASPER...DANIEL ISLAND...
NAVAL WEAPONS STATION CHARLESTON
629 AM EST FRI FEB 18 2011

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

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

* VISIBILITY: VISIBILITIES WILL BE 1/4 MILE OR LESS POCKETS OF 
  DENSE SEA FOG LINGER ALONG THE COASTAL COUNTIES. NEAR ZERO 
  VISIBILITIES WILL OCCUR NEAR BODIES OF WATER SUCH AS THE 
  CHARLESTON HARBOR...THE INTRACOASTAL WATERWAY...THE SAVANNAH 
  HARBOR AND THE COOPER...ASHLEY...WANDO...STONO...BROAD AND 
  ALTAMAHA RIVERS. 

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL 
  CONDITIONS. 

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.

&&

$$

SCZ045-181400-
/O.CON.KCHS.SM.Y.0002.000000T0000Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
629 AM EST FRI FEB 18 2011

...DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...

A DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING. 

* VISIBILITY: AREAS OF FOG WILL MIX WITH DENSE SMOKE ACROSS THE 
  WESTERN PORTIONS OF THE FRANCIS MARION NATIONAL FOREST WHERE 
  THE UNITED STATES FOREST SERVICE IS CONDUCTING PRESCRIBED BURN 
  ACTIVITIES. 

* IMPACTS: THE UNITED STATES FOREST SERVICE HAS REPORTED THAT
  WITHERBEE ROAD IS CLOSED BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD
  DUE TO DENSE SMOKE. CONDITIONS SHOULD IMPROVE BY MID MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND ALLOW FOR EXTRA TRAVEL TIME. USE LOW BEAM HEADLIGHTS
AND REDUCE DRIVING SPEEDS. LEAVE PLENTY OF DISTANCE AHEAD OF YOU
IN CASE A SUDDEN STOP IS NEEDED. FOLLOW INSTRUCTIONS OF TRAFFIC
CONTROL AUTHORITIES.

&&

$$
062 
WWUS72 KCHS 181216
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
716 AM EST FRI FEB 18 2011

GAZ101-118-SCZ047>052-181330-
/O.CAN.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
EFFINGHAM-INLAND CHATHAM-INLAND JASPER-BEAUFORT-COASTAL COLLETON-
CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
INCLUDING THE CITIES OF...SPRINGFIELD...SAVANNAH...RIDGELAND...
BEAUFORT...HILTON HEAD...EDISTO BEACH...CHARLESTON...JASPER...
DANIEL ISLAND...NAVAL WEAPONS STATION CHARLESTON
716 AM EST FRI FEB 18 2011

...DENSE FOG ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN CHARLESTON HAS CANCELLED THE
DENSE FOG ADVISORY. PATCHY DENSE FOG MAY LINGER THROUGH MID
MORNING AROUND WATERWAYS AND ALONG THE BEACHES AND BARRIER 
ISLANDS.

$$

GAZ099-100-114>117-119-137>141-181400-
/O.CON.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
CANDLER-BULLOCH-TATTNALL-EVANS-INLAND BRYAN-COASTAL BRYAN-
COASTAL CHATHAM-LONG-INLAND LIBERTY-COASTAL LIBERTY-
INLAND MCINTOSH-COASTAL MCINTOSH-
INCLUDING THE CITIES OF...METTER...STATESBORO...REIDSVILLE...
CLAXTON...PEMBROKE...FORT MCALLISTER...TYBEE ISLAND...LUDOWICI...
HINESVILLE...HALFMOON LANDING...TOWNSEND...DARIEN
716 AM EST FRI FEB 18 2011

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

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

* VISIBILITY: VISIBILITIES WILL DROP TO 1/4 MILE OR LESS AT TIMES AS
  AREAS OF DENSE FOG EXPAND AROUND DAWN THIS MORNING. CONDITIONS
  SHOULD IMPROVE QUICKLY BY MID MORNING AS THE FOG DISSIPATES.

* IMPACTS: POOR VISIBILITIES WILL CREATE HAZARDOUS TRAVEL CONDITIONS.

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.

&&

$$

SCZ045-181400-
/O.CON.KCHS.SM.Y.0002.000000T0000Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
716 AM EST FRI FEB 18 2011

...DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING...

A DENSE SMOKE ADVISORY REMAINS IN EFFECT UNTIL 9 AM EST THIS
MORNING. 

* VISIBILITY: AREAS OF FOG WILL MIX WITH DENSE SMOKE ACROSS THE  
WESTERN PORTIONS OF THE FRANCIS MARION NATIONAL FOREST WHERE  
THE UNITED STATES FOREST SERVICE IS CONDUCTING PRESCRIBED BURN  
ACTIVITIES.

* IMPACTS: THE UNITED STATES FOREST SERVICE HAS REPORTED THAT  
WITHERBEE ROAD IS CLOSED BETWEEN HIGHWAY 402 AND ALLIGATOR ROAD  
DUE TO DENSE SMOKE. CONDITIONS SHOULD IMPROVE BY MID MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE SMOKE ADVISORY MEANS FIRES WILL CREATE SMOKE THICK ENOUGH
TO GREATLY REDUCE VISIBILITIES. MOTORISTS SHOULD DRIVE WITH
CAUTION AND ALLOW FOR EXTRA TRAVEL TIME. USE LOW BEAM HEADLIGHTS
AND REDUCE DRIVING SPEEDS. LEAVE PLENTY OF DISTANCE AHEAD OF YOU
IN CASE A SUDDEN STOP IS NEEDED. FOLLOW INSTRUCTIONS OF TRAFFIC
CONTROL AUTHORITIES.

&&

$$
685 
WWUS72 KCHS 181353
NPWCHS

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE CHARLESTON SC
853 AM EST FRI FEB 18 2011


GAZ099-100-114>117-119-137>141-181500-
/O.EXP.KCHS.FG.Y.0005.000000T0000Z-110218T1400Z/
CANDLER-BULLOCH-TATTNALL-EVANS-INLAND BRYAN-COASTAL BRYAN-
COASTAL CHATHAM-LONG-INLAND LIBERTY-COASTAL LIBERTY-
INLAND MCINTOSH-COASTAL MCINTOSH-
INCLUDING THE CITIES OF...METTER...STATESBORO...REIDSVILLE...
CLAXTON...PEMBROKE...FORT MCALLISTER...TYBEE ISLAND...LUDOWICI...
HINESVILLE...HALFMOON LANDING...TOWNSEND...DARIEN
853 AM EST FRI FEB 18 2011

...DENSE FOG ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING...

THE DENSE FOG ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING. 

$$

SCZ045-181500-
/O.EXP.KCHS.SM.Y.0002.000000T0000Z-110218T1400Z/
INLAND BERKELEY-
INCLUDING THE CITY OF...MONCKS CORNER
853 AM EST FRI FEB 18 2011

...DENSE SMOKE ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING...

THE U.S. FOREST SERVICE REPORTS THAT VISIBILITIES HAVE IMPROVED
AND ALL ROADWAYS HAVE BEEN REOPENED. THEREFORE...THE DENSE SMOKE
ADVISORY WILL EXPIRE AT 9 AM EST THIS MORNING.

$$

JAQ

What forecasters said that day

The local office's own words before this dense smoke 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 dense smoke advisory went out at Feb 17, 3:30 PM EST, 44 minutes earlier.

Area forecast discussion, Feb 17, 3:30 PM EST, 44 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
330 PM EST THU FEB 17 2011

.SYNOPSIS...
ATLANTIC HIGH PRESSURE WILL EXPAND OVER THE SOUTHEAST STATES THROUGH
FRIDAY NIGHT BEFORE A DRY COLD FRONT PUSHES THROUGH EARLY SATURDAY.
HIGH PRESSURE WILL THEN RETURN INTO EARLY NEXT WEEK WITH ANOTHER COLD
FRONT EXPECTED TUESDAY. COOLER HIGH PRESSURE WILL BUILD IN TUESDAY
NIGHT THROUGH LATE WEEK.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
ATLC HIGH PRESSURE WILL STRETCH WESTWARD WHILE UPPER RIDGING
SLIDES EASTWARD OVER THE AREA. WINDS WILL BECOME SWLY OVERNIGHT
AHEAD OF A COLD FRONT APPROACHING THE APPALACHIANS. DISSIPATION OF
LOW CLOUDS AND MID-LEVEL MOISTURE BEING SHUNTED OFF TO THE NE WILL
YIELD A MOSTLY CLEAR FIRST HALF OF THE NIGHT ACROSS MOST OF THE
AREA AND WITH SUFFICIENT LOW-LEVEL MOISTURE UNDER THE NOCTURNAL
INVERSION...CONDITIONS LOOK FAVORABLE FOR SOME FOG TO DEVELOP.
THERE IS ALSO THE CHANCE THAT SEA FOG DEVELOPS ACROSS THE COASTAL
WATERS AND ADVECTS ONSHORE. HOWEVER...INCREASING SWLY WINDS OFF
THE SURFACE SHOULD PREVENT FOG FROM BECOMING DENSE AND ANY SEA FOG
FROM MOVE TOO FAR INLAND. AT THIS POINT WE HAVE MAINTAINED
MENTION OF AREAS OF FOG AND WILL SEE HOW THINGS PROGRESS THIS
EVENING. MILD OVERNIGHT CONDITIONS WILL CONTINUE WITH LOWS IN THE
UPR 40S TO LWR 50S AWAY FROM THE LOCALLY MILDER COAST.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH SUNDAY/...
AN 850 MB RIDGE WILL SETTLE OVER THE REGION ON FRIDAY WITH A DRIER
WESTERLY FLOW DEVELOPING. SURFACE DEWPOINTS WILL DROP A SOLID 8-10
DEGREES OVER TODAY/S VALUES. MORNING FOG AND LOW CLOUDS SHOULD CLEAR
OUT DURING THE MORNING WITH MOSTLY SUNNY SKIES FOR THE REMAINDER OF
THE DAY. INCREASING THICKNESSES AND DOWNSLOPE FLOW SHOULD RESULT IN
A WARM DAY WITH TEMPERATURES IN THE UPPER 70S.

AS THE UPPER RIDGE BUILDS ACROSS THE CENTRAL UNITED STATES A
BACKDOOR COLD FRONT WILL DROP INTO THE AREA FRIDAY NIGHT. THE FRONT
WILL ONLY BE ACCOMPANIED BY A SMALL AMOUNT OF LOW-LEVEL MOISTURE SO
IT SHOULD A DRY PASSAGE BUT THE INCREASE IN CLOUDINESS WILL KEEP
FRIDAY NIGHT LOWS FROM DROPPING BELOW 50 OR SO. ON SATURDAY SOUTHERN
ZONES WILL BE SOUTH OF THE FRONT WHILE NORTHERN AREAS SEE A COOL NE
FLOW. HIGHS WILL RANGE FROM UPPER 70S FAR SW TO AROUND 70 FAR NE.
COASTAL SECTIONS WILL BE COOLER DUE TO AN ONSHORE FLOW.

THE BACKDOOR FRONT SHOULD FULLY CLEAR THE FORECAST AREA BY SUNDAY
MORNING WITH COOL HIGH PRESSURE SETTLING OVERHEAD BEFORE SHIFTING
OFFSHORE DURING THE DAY. TEMPS WILL BE A COUPLE DEGREES COOLER AS A
RESULT BUT STILL WELL ABOVE NORMAL.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
HIGH PRESSURE WILL SETTLE IN THE ATLC SUN NIGHT WHILE A BROAD
UPPER LEVEL RIDGE MOVES THROUGH THE SOUTHEASTERN STATES. THE RIDGE
WILL FLATTEN OUT MON INTO MON NIGHT WHILE A SMALL BUT POTENT LOW
PRESSURE SYSTEM COMING OUT OF THE SOUTHERN PLAINS RAPIDLY SHIFTS E.
THIS SYSTEM WILL SHIFT OFFSHORE OF THE MID ATLC STATES EARLY
TUE...PUSHING A COLD FRONT THROUGH THE REGION LATE IN THE DAY ON
TUESDAY. MODELS ARE A BIT CONFLICTED AS TO THE AMOUNT OF MOISTURE
THIS SYSTEM WILL HAVE ON ITS SOUTHERN FLANKS WITH WHICH TO PRODUCE
PRECIP SO WILL KEEP THE FCST DRY ATTM. HOWEVER...WHAT IS OF VERY
GOOD AGREEMENT AMONG ALL THE LONG-TERM MODELS IS THAT POTENT COLD
AIR ADVECTION BEHIND THE FRONT WILL BUMP TEMPS DOWN ABOUT 15-20
DEGREES FOR TUE NIGHT INTO WED. HAVE SHOWN SUCH AN ADJUSTMENT IN THE
TEMPS FOR THE MIDDLE OF NEXT WEEK. THIS SYSTEM WILL THEN BE FOLLOWED
BY HIGH PRESSURE GOING INTO WED WITH TEMPS SLIGHTLY BELOW NORMAL.

&&

.AVIATION /20Z THURSDAY THROUGH TUESDAY/...
MOSTLY VFR THROUGH 06Z/18...ALTHOUGH EITHER SITE COULD SEE
MARGINAL MVFR CIGS THROUGH EARLY AFTERNOON AS A TROUGH OF LOW PRES
NEAR THE COAST DISSIPATES. ALSO SOME WIND GUSTS BETWEEN 15-20 KT
AT KCHS AS THE SEA BREEZE ANGLES INLAND AND LOW LEVEL PRES
GRADIENTS TIGHTEN UP.

AFTER ABOUT 08Z/18...VFR CONDITIONS WILL BE IN JEOPARDY AS THE
POTENTIAL FOR STRATUS AND FOG INCREASES AS MOISTURE GETS TRAPPED
UNDER THE INVERSION. HOWEVER...WINDS JUST OFF THE SURFACE WILL BE
INCREASING OUT OF THE SW. ALTHOUGH THERE COULD BE SOME RADIATION
FOG...THERE COULD ALSO BE SEA FOG ADVECTING INLAND TOWARD THE
TERMS...ALTHOUGH THIS IS MORE LIKELY AT KCHS. DECIDED TO KEEP
THINGS NO WORSE THAN MVFR ATTM DUE TO THE UNCERTAINTY BUT CONDS
COULD BECOME IFR OR LOWER B/W ABOUT 08-14Z.

EXTENDED AVIATION OUTLOOK...POSSIBLE MVFR CIG/VSBY FRI NIGHT WITH A
BACKDOOR FRONT MOVING IN. MVFR BR POSSIBLE AT KSAV SAT NIGHT. EARLY
MORNING MVFR RADIATION FOG POSSIBLE AT BOTH TERMINALS MONDAY.

&&

.MARINE...
TONIGHT...THE COASTAL TROUGH OF LOW PRES APPEARS TO HAVE
DISSIPATED THIS AFTERNOON AS WINDS ARE SOLIDLY S/SE ACROSS OUR
MARINE AREA. MEANWHILE...ATLC HIGH PRES WILL TAKE CONTROL WITH
WINDS BECOMING SW OVERNIGHT. SPEEDS WILL INCREASE SLIGHTLY DUE TO
A TIGHTENING PRES GRADIENT AHEAD OF AN APPROACHING COLD FRONT. SEAS
SHOULD BE NO HIGHER THAN 4 FT WITHIN 20 NM AND 5 FT WITHIN 60 NM
SO NO ADVISORIES ARE EXPECTED.

WITH REGARDS TO SEA FOG...THE 18Z WRF/15Z SREF SUGGEST AT LEAST PATCHY
SEA FOG DEVELOPING OVERNIGHT ACROSS THE COOL NEARSHORE WATERS AS
SE/S WINDS MAINTAIN DEWPOINTS IN THE MID/UPPER 50S. TOO MUCH
UNCERTAINTY TO DISCUSS SPECIFIC VSBYS BUT SOME DENSE FOG COULD
DEVELOP AND THUS A DENSE FOG ADVISORY COULD EVENTUALLY BE NEEDED. WE
WILL CONTINUE TO MENTION THE POTENTIAL IN OUR HAZARDOUS WEATHER
OUTLOOK PRODUCT.

FRIDAY THROUGH TUESDAY...WESTERN ATLANTIC HIGH PRESSURE WILL SLOWLY
LOSE ITS INFLUENCE OVER THE MARINE AREA ON FRIDAY AS THE HIGH
WEAKENS AND PUSHES EAST. A BACKDOOR FRONT WILL SWITCH WINDS AROUND
TO NNE FRIDAY NIGHT INTO SATURDAY AS COOLER HIGH PRESSURE BUILDS
FROM THE NORTH. WINDS/SEAS CURRENTLY FORECAST JUST BELOW ADVISORY
CRITERIA ALTHOUGH THINGS COULD GET CLOSE SATURDAY THROUGH
SUNDAY...ESPECIALLY SEAS OVER THE OFFSHORE GA WATERS AND WINDS IN
THE SC NEARSHORE.

WITH REGARDS TO SEA FOG...WE HAVE MAINTAINED THE GOING FORECAST
AS-IS DUE TO LITTLE ADDITIONAL CONFIDENCE IN FOG FORMATION. NONE OF
THE GUIDANCE IS HITTING THE SEA FOG VERY HARD BUT MODEL DEWPOINTS
EXPECTED TO CLIMB INTO THE UPPER 50S FRIDAY MORNING WITH WATER TEMPS
IN THE LOWER 50S. WIND SPEEDS WILL BE 8-10 KT WHICH IS A LITTLE
STRONG FOR MAXIMIZING RESIDENCE TIME OVER THE COOLER SHELF WATERS.
SEA FOG CAN DEVELOP RAPIDLY AND NOT ALWAYS FOLLOW THE RULES SO WE
CERTAINLY CANNOT RULE OUT SOME AREAS OF FOG ALONG THE COAST FRIDAY
THROUGH EARLY SATURDAY.

SW FLOW ON MON WILL SHIFT W BY TUE BUT WARM AIR ADVECTION REGIME
WILL LIKELY HAVE A HARD TIME MIXING WINDS DOWN TO THE COOL
WATERS...BUT SPEEDS WILL BE ON THE INCREASE WITH SLOWLY BUILDING
SEAS EARLY NEXT WEEK.

&&

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

&&

RJB/JRL
Hazardous weather outlook, Feb 17, 4:05 PM EST, 9 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE CHARLESTON SC
405 PM EST THU FEB 17 2011

AMZ374-GAZ087-088-099>101-114>116-118-137-138-140-SCZ040-042>044-047-
052-182115-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-INLAND CHATHAM-LONG-INLAND LIBERTY-INLAND MCINTOSH-
ALLENDALE-HAMPTON-INLAND COLLETON-DORCHESTER-INLAND JASPER-
TIDAL BERKELEY-
405 PM EST THU FEB 17 2011

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

SCZ045-182115-
INLAND BERKELEY-
405 PM EST THU FEB 17 2011

...DENSE SMOKE ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EST
FRIDAY...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TONIGHT.

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

   DENSE SMOKE ADVISORY.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

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

   DENSE SMOKE ADVISORY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AMZ330-350-352-354-GAZ117-119-139-141-SCZ048>051-182115-
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-COASTAL BRYAN-COASTAL CHATHAM-
COASTAL LIBERTY-COASTAL MCINTOSH-BEAUFORT-COASTAL COLLETON-
CHARLESTON-COASTAL JASPER-
405 PM EST THU FEB 17 2011

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

.DAY ONE...TONIGHT.

SEA FOG...WARMER AND MORE HUMID AIR WILL MOVE ACROSS THE COOL NEAR
SHORE WATERS TONIGHT. THIS MAY ALLOW FOR THE FORMATION OF SEA FOG
THIS EVENING THROUGH LATE TONIGHT. THE FOG COULD BECOME LOCALLY
DENSE AND DENSE FOG ADVISORIES MAY BE REQUIRED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SEA FOG...WARMER AND MORE HUMID AIR MOVING ACROSS THE RELATIVELY
COOLER NEAR SHORE WATERS MAY ALLOW FOR THE FORMATION OF SEA FOG
FOR MUCH OF THE DAY ON FRIDAY THROUGH SATURDAY MORNING. THE FOG
COULD BECOME LOCALLY DENSE AND DENSE FOG ADVISORIES MAY BE
REQUIRED.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

Nearby

Dense Smoke Advisories in South Carolina, 2011Every dense smoke advisory in 2011

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.