« 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

490
FXUS62 KCHS 250809
AFDCHS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHARLESTON SC
409 AM EDT SAT OCT 25 2014

.SYNOPSIS...
HIGH PRESSURE WILL PREVAIL THROUGH THE MIDDLE OF NEXT WEEK. A COLD
FRONT WILL MOVE INTO THE AREA THURSDAY AND OFF THE COAST BY FRIDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
CLEAR SKIES PREVAIL THIS MORNING IN THE WAKE OF A STRONG BUT MOISTURE
STARVED MID LEVEL COLD POOL/VORTICITY MAXIMA WHICH MOVED OFF THE
GEORGIA COAST AFTER 07Z. TEMPS SHOULD DIP INTO THE UPPER 40S AROUND
NORTH CHARLESTON AND THE WESTERN HALF OF CHATHAM COUNTY BY DAYBREAK.
EVEN COOLER TEMPS FURTHER INLAND WITH MILDER READINGS TOWARD THE
BEACHES AND BARRIER ISLANDS.

SURFACE HIGH PRES WILL REMAIN ANCHORED ACROSS THE GULF COAST REGION
AND EXTEND INTO GEORGIA AND THE CAROLINAS THROUGH TONIGHT. DEEP
LAYERED DRY AIR WILL PERSIST AND THE ONLY CLOUDS AROUND TODAY WILL
BE A FEW WISPY THIN CIRRUS LATER TODAY. FULL SUNSHINE AND LIGHT
WINDS WITH HIGH TEMPS TOPPING OUT IN THE MID/UPPER 70S ACROSS THE
REGION.

QUIET WEATHER TONIGHT WITH JUST ENOUGH OF A BOUNDARY LAYER GRADIENT
TO KEEP RADIATIONAL COOLING EFFECTS FROM BEING PERFECT. LOW TEMPS IN
THE MID/UPPER 40S COLDER INLAND AREAS TO LOWER 50S ALONG THE U.S.
17 CORRIDOR. SURFACE WINDS MOST AREAS WILL BE LIGHT TO NEAR CALM.

&&

.SHORT TERM /SUNDAY THROUGH TUESDAY/...
THE MEDIUM RANGE PERIOD WILL FEATURE DRY WEATHER AND ABOVE NORMAL
TEMPERATURES. A DEEP-LAYERED RIDGE WILL BE THE PRIMARY FEATURE
DURING THE PERIOD. WARM LOW-LEVEL THICKNESSES AND FULL SUNSHINE EACH
DAY WILL SUPPORT HIGH TEMPS IN THE LOWER TO MIDDLE 80S. THE SURFACE
HIGH WILL BE CENTERED OVER THE REGION SUNDAY NIGHT...ALLOWING FOR
GOOD RADIATIONAL COOLING AND LOWS IN THE UPPER 40S TO LOWER 50S. A
RETURN FLOW BY MONDAY NIGHT WILL KEEP LOWS IN THE MIDDLE 50S MOST
AREAS.

&&

.LONG TERM /TUESDAY NIGHT THROUGH FRIDAY/...
THE UPPER RIDGE FINALLY BREAKS DOWN DURING THE MIDDLE OF NEXT WEEK
WITH A LONG WAVE TROUGH GRADUALLY DEVELOPING ACROSS THE CENTRAL AND
EASTERN UNITED STATES. THE GFS AND ECMWF ARE NOW IN BETTER AGREEMENT
ON A WEAK COLD FRONT DROPPING THROUGH THE AREA ON THURSDAY. DUE TO
THE RELATIVELY FLAT UPPER TROUGH...MOISTURE RETURN AHEAD OF THE
FRONT WILL BE MARGINAL SO WE DO NOT ANTICIPATE MORE THAN ISOLATED
SHOWERS ALONG THE FRONT THURSDAY AND THURSDAY NIGHT. THE MODELS
DIVERGE FRIDAY INTO SATURDAY...THOUGH THE TREND IS TOWARD A
SIGNIFICANTLY COLDER AIRMASS MOVING IN LATE WEEK OR NEXT WEEKEND.

&&

.AVIATION /08Z SATURDAY THROUGH WEDNESDAY/...
VFR.

EXTENDED OUTLOOK...VFR CONDITIONS SHOULD PREVAIL.

&&

.MARINE...
A WEAK NORTHERLY SURGE FROM THE CHARLESTON/SAVANNAH PILOT BUOYS
SEAWARD PRIOR TO MID MORNING...10 TO 15 KT TOPS. THE SYNOPTIC FLOW
BACKS TO A MORE W OR OFFSHORE COMPONENT TONIGHT WITH LOCAL 15 KT
SURGES FROM JETTING EFFECTS BEYOND 10 NM AFTER MIDNIGHT. SEAS 1 TO
3 FT THROUGH TONIGHT.

A BROAD HIGH PRESSURE SYSTEM WILL DOMINATE THE MARINE WEATHER SUNDAY
THROUGH LATE NEXT WEEK WITH WINDS GENERALLY 15 KT OR LESS AND SEAS
NO HIGHER THAN 3 FT.

&&

.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.