Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
329 FXZS60 NSTU 010108 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 208 PM SST Tue Apr 30 2024 .Short term... Thunderstorms that brought heavy rainfall, thunder, and a lightning show last night continues to diminish in the area. Breezy winds from the east is the current driver in pushing this active weather further west. A stable trend is evident on latest surface and upper air observations as the trade winds have kicked in. Expect showers embedded within the trade wind flow through midweek, before another round of possible thunderstorms moves across the American Samoa Region. Latest model data shows a trough dominating in the second half of the forecast period. This feature will diminish windspeeds while bringing an uptick in showers Wednesday night. During this time, GDI models (convection and instability indicator) suggests a higher chance for convection and heavy rainfall through the new week. Hence, the potential for flooding is possible with the latter trough. .Marine... Latest wave heights seen on satellite data are around 6 to 8 feet. These heights usually fall within the small craft advisory threshold as well as wind speeds over 20 mph. With the aforementioned waves and trades, choppy seas are likely. Hence, a small craft advisory will remain in effect through Wednesday. Thereafter, seas will subside below advisory thresholds when a trough develops in the region Wednesday night. && .PPG WATCHES/WARNINGS/ADVISORIES... Small Craft Advisory && $$ TM