Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 180119

Area Forecast Discussion
National Weather Service Pago Pago  AS
219 PM SST Sat Feb 17 2018

.Short term...
TONIGHT THROUGH MONDAY NIGHT...A weak convergence over Tutuila
and Manua will continue to produce scattered convections across
the islands through Sunday night. As the weak convergence moves
further up north on Monday, showers will also diminish across the
islands. RAOB from this afternoon continue to depict conditional
unstable profile. Therefore no changes to the previous forecast.

.Long term...
TUESDAY THROUGH SATURDAY...Monsoonal trough up northeast is now
delayed to arrive across the islands on Thursday night. This
active trough will generate strong and gusty north winds and heavy
showers. The monsoon trough will descend southwest on Saturday


Seas of 5 to 7 ft will persist through new week until Thursday
night. With active monsoonal trough moving across the islands on
Thursday night, seas will gradually rise 7 to 9 ft and build 9 to
12 ft on Friday morning.




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