FXZS60 NSTU 100125

AFDPPG



Area Forecast Discussion

National Weather Service Pago Pago  AS

225 PM SST Fri May 9 2025



.Short term...



Satellite imagery continues to show showers and nearby 

thunderstorms along the Tutuila, Aunu'u and Manu'a islands. A 

ridge of high pressure is now moving further away from the region.

The interaction from the ridge and the trough caused windy 

conditions throughout the past few days. Since the ridge is moving

away, sustained winds are expected to decrease tonight through 

Saturday night. Cloudy skies with showers that may be heavy at 

times remain in the forecast through at least tonight. Showers 

remain likely for Saturday and Saturday night with at least mostly

cloudy skies, but showers are not forecast to be as heavy. 

Therefore, the Flood Watch continues through at least tonight, but

may be lifted on Saturday. 



Unfortunately, more rain and breezy weather is forecast for Sunday

through Tuesday. A low pressure system is anticipated to develop

near the Fiji region and to move southeastward. Even though the

center of the low will be to the south, northwesterly winds are to

reach up to 25 mph with higher gusts and potentially higher winds

in the Pago Pago Harbor region. We will monitor this time period

for the possibility of rain being heavy enough to cause flash 

flooding. Otherwise, cloudy skies are forecast with temperatures 

slightly lower than normal.



.Long term...



Finally from Wednesday through the rest of the week next week,

drier conditions are forecast for all islands. Winds are to shift

from the west/northwest to east throughout the day on Wednesday

and to remain through the rest of the week at around 10 to 15 

mph. If showers occur, it would be in the passing form. A mix of 

sun and clouds are anticipated throughout the day.



&&



.Marine...



Rough seas remain today with a moderate to fresh easterly breeze

and higher gusts near heavy rainfall. The High Surf Warning remain

in effect for the southern and eastern shores, while the northern

and western remains in a High Surf Advisory. Seas are forecast to

slowly ease beginning tonight as the easterly breeze decrease to a

gentle to moderate breeze for the overnight hours and Saturday. As

there are no significant swell moving through the area, surf

levels will likely decrease to below warning levels by Saturday 

morning.



However, a low pressure system develops to the south and west on 

Sunday through mid-week next week. This is forecast for winds to

become a west/northwesterly breeze by Sunday and potentially 

reaching a fresh to strong breeze by Sunday night through Tuesday.

Therefore, rough seas are expected to continue for the next 5

days.



&&



.PPG WATCHES/WARNINGS/ADVISORIES...



High Surf Warning (South and East Facing Shores)

High Surf Advisory (North and West Facing Shores) 

Small Craft Advisory 

Flood Watch 



&&



$$



LaPlante