Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
633 FXZS60 NSTU 310047 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 147 PM SST Sun Mar 30 2025 .DISCUSSION... Satellite imageries show active weather in the area from time to time due to open-cell cumuli clouds moving across the territory. Heavy afternoon showers observed over some parts of the islands will likely continue throughout the overnight hours. This is further shown on this afternoon`s (31/00Z) upper air observations (RAOB), with thunderstorm signals over the area. Additionally, with light and variable winds at the surface through the mid- levels, low to no wind shear will likely support cloud development over the area. Model data show these conditions remaining for tonight through at least Monday. Also shown on the latest satellite imageries are thunderstorm activities associated with a mid-level low to the northeast of the islands. By Monday night, models are showing the aforementioned mid-level trough moving closer to the islands. This phenomenon may bring an increase in showers and thunderstorms over the area by midweek. Shower embedded within the light easterly wind flow will remain for the rest of the forecast period. Therefore, expect scattered to numerous showers with embedded thunderstorms and light and variable winds for this forecast period. && .Marine... Observations of combined seas from the PacIOOS buoys continue to show heights around 4 feet with consistent peak periods around 15 seconds long at the King-Poloa buoy to the west, and intermittent peak periods of 15 seconds at the Aunu`u buoy to the east. Although these observations may reflect favorable ocean conditions below advisory thresholds, the long periods are signals of high risks of higher than normal surfs closer to the shore and stronger rip currents in the water. Thunderstorms in the area can also elevate seas and winds nearby. Additionally, with king tides (March 29-30) expected for this time of the year, surfs will likely be higher, especially during high tides. Model data, however, show seas building near advisory levels towards the end of the week. && .PPG WATCHES/WARNINGS/ADVISORIES... NONE && $$ JTAllen