« Back
NWS Peachtree City, Ga » Text Product » CHS Area Forecast Discussion


Printer-friendly Version
Current Version              Previous Versions:   1  2  3  4  5  6  7  8  9  

Area Forecast Discussion

681
FXUS62 KCHS 240803
AFDCHS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
403 AM EDT FRI OCT 24 2014

.SYNOPSIS...
HIGH PRESSURE WILL PERSIST ACROSS THE REGION THROUGH LATE WEEK.
A DRY COLD FRONT WILL DISSIPATE OVER OR NEAR THE REGION THIS
WEEKEND...FOLLOWED BY HIGH PRESSURE THROUGH THE MIDDLE OF NEXT
WEEK.

&&

.NEAR TERM /THROUGH TONIGHT/...
PRE-DAWN...HIGH LEVEL CLOUDS WERE INCREASING ACROSS THE REGION AHEAD
OF A SHORT WAVE TROUGH MOVING SE INTO THE LOWER GULF COAST REGION.
PATCHES OF THICKER CIRROSTRATUS NOTED ON 3.9 MICRON IR SATELLITE
IMAGERY MAY BE ENOUGH TO KEEP TEMPS FROM FALLING ANY FURTHER EARLY
THIS MORNING AND IN A FEW INSTANCES...READINGS MAY RISE A DEGREE
OR TWO.

A PROGRESSIVE SHORT WAVE RIDGE WILL SLIDE OFFSHORE THIS MORNING
AS A SERIES OF SHORT WAVES DIG OUT UPPER TROUGHING OVER THE EASTERN
GULF...FLORIDA/GEORGIA AND THE CAROLINAS BY LATE TONIGHT. DESPITE THE
PVA THE ATMOSPHERE REMAINS BONE DRY THROUGH DEEP LAYERS WITH PWATS
1/2 INCH OR LESS. BOUTS OF HIGH CLOUDS ARE EXPECTED WITH HIGHEST
COVERAGE THIS MORNING AND PERHAPS FOR A SHORT WHILE TONIGHT OVER
EASTERN SOUTH CAROLINA AS THE STRONGER OF THE VORTS ROLLS THROUGH.

TODAY...DIFFICULT TO TELL IF HIGH CLOUDS THIS MORNING WILL BE ENOUGH
TO TAKE A DEGREE OR SO OFF HIGH TEMPS DURING THE AFTERNOON BUT WE
MAINTAINED A FORECAST HIGH TEMP SCHEME OF MID 70S WITH SOME UPPER
70S POSSIBLE. A WEAK PRES PATTERN AT THE SURFACE WITH LIGHT WINDS
THROUGHOUT THE DAY.

THIS EVENING...POSITIVE 700 MB OMEGA AND ARRIVAL OF THE MID LEVEL
SHORT WAVE WILL LIKELY RESULT IN SOME POCKETS OF MID LAYERED CLOUD
COVER ACROSS EASTERN SOUTH CAROLINA WITH BUILDING SUBSIDENCE ALOFT
OVERNIGHT AND WEAK COLD AIR ADVECTION IN THE LOW LEVELS. THERE
COULD BE A SLUGGISH DIURNAL CURVE TO TEMPS DURING THE EVENING BUT
READINGS SHOULD BEGIN TO FALL AT A BETTER CLIP LATE.

&&

.SHORT TERM /SATURDAY THROUGH MONDAY/...
AN EXPANSIVE UPPER LEVEL RIDGE WILL SPREAD OVER THE CENTRAL AND
EASTERN STATES DURING THE PERIOD WHILE AT THE SURFACE DRY HIGH
PRESSURE PREVAILS. AS THE 850 MB RIDGE BUILDS INTO THE SOUTHEAST
STATES ON SUNDAY...A WEAK...DRY FRONT WILL DROP THROUGH THE AREA.
INCREASING LOW-LEVEL THICKNESSES AND A DOWNSLOPE WIND COMPONENT WILL
YIELD A WARMING TREND THROUGH THE PERIOD WITH HIGHS REACHING INTO
THE LOWER TO MIDDLE 80S BY SUNDAY AND MONDAY. SUNDAY MORNING LOWS
WILL AGAIN BE IN THE 40S...THEN WITH THE SURFACE HIGH SHIFTING EAST
WE WILL SEE LOWER TO MIDDLE 50S LOWS MONDAY MORNING.

&&

.LONG TERM /MONDAY NIGHT THROUGH THURSDAY/...
THE EXPANSIVE UPPER LEVEL RIDGE WILL SLOWLY SHIFT EAST WHILE A BROAD
TROUGH PATTERN DEVELOPS MID-WEEK. A WEAK SURFACE TROUGH MAY SET UP
OFF THE GA COAST TUESDAY NIGHT INTO WEDNESDAY NIGHT WITH ISOLATED
SHOWERS POSSIBLE. LARGE MODEL DIFFERENCES EXIST THURSDAY INTO FRIDAY
REGARDING AN UPPER VORT DROPPING TOWARD THE MID-ATLANTIC REGION.
THERE ARE HINTS AT A COLD FRONT MOVING INTO THE CAROLINAS THURSDAY
AND MOVING OFFSHORE BY FRIDAY MORNING. HOWEVER THE LOW AND MID
LEVELS DO NOT LOOK VERY MOIST SO WE CURRENTLY ONLY SHOW SLIGHT
CHANCE POPS THURSDAY AND THURSDAY NIGHT. FAIRLY WARM TEMPS WILL
CONTINUE TUESDAY THROUGH THURSDAY WITH HIGHS IN THE 80S AND LOWS IN
THE 50S. A COOL DOWN IS EXPECTED FRIDAY WITH HIGHS IN THE UPPER 70S.

&&

.AVIATION /08Z FRIDAY THROUGH TUESDAY/...
VFR.

EXTENDED OUTLOOK...VFR CONDITIONS SHOULD PREVAIL.

&&

.MARINE...
TRANQUIL CONDITIONS TODAY AS A WEAK PRES PATTERN RESIDES OVER THE
WATERS. WINDS MOSTLY 10 KT OR LESS WITH SEAS 2 FT OR LESS. IN
RESPONSE TO AN UPPER DISTURBANCE MOVING OFFSHORE TONIGHT WITH WEAK
LOW LEVEL COLD AIR ADVECTION...A LATE NIGHT SURGE MAY APPROACH 15
KT BEYOND 20 NM OFFSHORE WITH SPEEDS 10 TO 15 KT FROM THE NORTH NEAR
SHORE NEARING DAYBREAK.

HIGH PRESSURE WILL PUSH OFF THE COAST EARLY NEXT WEEK WITH OFFSHORE
WINDS BECOMING ONSHORE. SPEEDS WILL GENERALLY BE 15 KT OR LESS WITH
SEAS 3 FT OR LESS.

&&

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

&&

$$

NEAR TERM...
SHORT TERM...JRL
LONG TERM...JRL
AVIATION...
MARINE...JRL






USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.