Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
085 FXZS60 NSTU 120051 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 151 PM SST Tue Mar 11 2025 .Short term... Satellite imagery from this morning and early afternoon have shown a mix of sun and clouds over the American Samoa islands. However, just off to the east, a mid-level trough is approaching the territory. The risk of rainfall increases to numerous showers (60% chance) for tonight through tomorrow morning. Throughout the day tomorrow, numerous showers continue but there is a chance of thunderstorms as well. These showers and thunderstorms are not expected to be severe or to cause flash flooding. The light easterly winds are forecast to remain through tomorrow night, but may have stronger wind gusts near thunderstorms. As the aforementioned trough moves away from the region on Thursday, we expect a mix of sun and clouds with a scattered risk (40% chance) of a passing shower. Easterly winds remain light, increasing up to 15 mph at times. .Long term... Overall, severe weather is not anticipated for Friday and into early next week. We will monitor another trough, which may move through on Friday and through the weekend to increase the risk of showers to numerous showers (60% chance). However, the uptick of showers is normal for this time of the year as the territory is still in the "wet season". The easterly breeze remains. && .Marine... The PacIOOS buoys to the east of Aunu`u and to the west of Tutuila show ideal conditions along the American Samoa coastal waters. Data shows northerly swell moving through, but remains weak along with a gentle easterly breeze. Swell is to continue weakening overnight with a gentle breeze through Thursday night. Therefore, expect ideal conditions to continue. Be aware of isolated thunderstorms on Wednesday (20% chance). As another trough approaches from the east on Friday through the weekend, this is forecast to increase easterlies to a moderate breeze which remains below the Small Craft Advisory criteria. && .PPG WATCHES/WARNINGS/ADVISORIES... NONE && $$ LaPlante