Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 180106

Area Forecast Discussion
National Weather Service Pago Pago  AS
206 PM SST Sat Mar 17 2018

.Short term...
TONIGHT THROUGH MONDAY NIGHT...Surface trough over the islands
is slowly moving south. A line of moisture is expected to move
across the islands tonight, spreading scattered showers and then
dissipating afternoon midnight tonight. RAOB from this afternoon
depicts an unstable profile. Ridge to the northeast will descend
across the islands on Sunday and hence generate gentle east
through the rest of the short term. Moisture riding the east flow
will again spread scattered showers on Monday night.

.Long term...
TUESDAY THROUGH SATURDAY...A trough is expected to develop near
west of the islands on Tuesday and spread scattered showers on
Tuesday night. The ridge to the east will again push the trough
west on Thursday morning. However, variable winds will remain
until Friday morning as the ridge enhance winds to gentle flow.


.Marine...Seas of 5 to 7 ft will persist through the rest of the
weekend and the new week. No significant swells are expected.





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