Weather Upadate : 000 FXZS60 NSTU 100204 AFDPPG AREA FORECAST DISCUSSION FOR AMERICAN SAMOA AND INDEPENDENT SAMOA NATIONAL WEATHER SERVICE PAGO PAGO AS 304 PM SST THU JAN 9 2014 .SHORT TERM... TONIGHT THROUGH SATURDAY NIGHT...MONSOONAL TROUGH REMAINS NEARLY STATIONARY ACROSS THE ISLANDS AND WILL CONTINUE TO PRODUCE HAZARDOUS WEATHER CONDITIONS IN THE NEXT FEW DAYS. SATELLITE IMAGERIES SHOW DEEP CONVECTIONS OVER SAVAII AND ARE SLOWLY DESCENDING TOWARDS TUTUILA AND MANUA. ASCAT SWATH FROM THIS MORNING REVEALED NORTH TO NORTHWEST WINDS OF 25 TO 35 MPH ACROSS THE SAMOAN REGION. RAOB FROM THIS AFTERNOON CONTINUE TO DEPICT AN UNSTABLE PROFILE. MODELS ARE MOVING THE TROPICAL CYCLONE IAN ON A SOUTH SOUTHEAST TRACK IN THE NEXT 12 HOURS. THE RIDGE TO THE NORTHEAST IS SLOWLY BUILDING WESTWARD AS THE HIGH PRESSURE SYSTEM TO THE SOUTHEAST WEAKENS. TROPICAL CYCLONE IAN IS EXPECTED TO BE CAPTURED BY A TROUGH MOVING FROM THE SOUTH OF TONGATAPU LATE FRIDAY NIGHT. THEREFORE...EXPECT NORTH NORTHWEST WINDS TO INCREASE TO GALE FORCE TONIGHT THROUGH FRIDAY NIGHT. NUMEROUS SHOWERS...HEAVY AT TIMES WILL CONTINUE TO IMPACT THE FCST AREA THROUGH SATURDAY EVENING. .LONG TERM... SUNDAY THROUGH THURSDAY...THE RIDGE BUILDING TO THE NORTH WILL EXPAND SOUTH ACROSS THE ISLANDS ON SUNDAY AND BRING STABLE WEATHER DURING THE NEW WEEK. RIDGE IS EXPECTED TO DOMINATE THE REST OF THE FCST DURING THE NEW WEEK. THEREFORE...ISOLATED SHOWERS AND GENTLE EAST WINDS DURING THE LONG TERM. && .MARINE... WITH GALE FORCE IN EFFECT...HAZARDOUS SEAS AND SURFS WILL CONTINUE TO IMPACT COASTAL WATERS AND SHORELINES IN THE NEXT FEW DAYS. SEAS OF 13 TO 14 FT WILL PERSIST THROUGH SATURDAY MORNING BEFORE SUBSIDING 10 TO 12 FT ON SATURDAY. SEAS ARE EXPECTED TO SUBSIDE BELOW ADVISORY LEVELS ON SUNDAY AFTERNOON. && .PPG WATCHES/WARNINGS/ADVISORIES... GALE WATCH IN EFFECT FOR TUTUILA AUNUU AND MANUA WIND ADVISORY REMAINS IN EFFECT. HIGH SURF ADVISORY REMAINS IN EFFECT. SMALL CRAFT ADVISORY REMAINS IN EFFECT. && $$ MALALA
Posted on: Fri, 10 Jan 2014 02:55:19 +0000