textproduct: WSO Pago Pago

Long term

For late Friday through early next week, we are monitoring the potential development of a strong trough to the southwest of the American Samoa islands. To the south of the trough is a strong high pressure system. The exact location and strength of this high will determine if heavy rainfall from this trough will move far enough north to reach the territory. If the trough reaches the territory, rainfall may be widespread with cloudy skies and rainfall may be heavy and consistent for the possibility of flash flooding. Therefore, we will monitor the position of the ridge and developing trough throughout the week.

Marine

Moderate easterly trades continued throughout the day. Data from the PacIOOS buoys shows seas heights a few feet below the Small Craft Advisory criteria with winds around 10 to 12 knots via ASCAT data, WFO American Samoa wind data, along with NOAA data located at Pago Pago Harbor. Therefore, there are currently no warnings or advisories for the Coastal Waters region.

However, we are monitoring the likelihood of southerly swell moving through the coastal waters on Wednesday and Thursday. Seas are expected to build to the Small Craft Advisory conditions throughout that time, then longer period swell is to move through during the weekend.

PPG WATCHES/WARNINGS/ADVISORIES

NONE