Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 220112

Area Forecast Discussion
National Weather Service Pago Pago  AS
212 PM SST Fri Jul 21 2017

.Short term...
TONIGHT THROUGH SUNDAY NIGHT...Ridge to the southeast will remain
nearly stationary tonight and Saturday. Moisture from the east
will accumulate to the south on Saturday and will spread
scattered showers across the islands. As the ridge migrates east
on Saturday night, breezy east winds will slightly diminish to
gentle conditions. Models are now shifting east winds to the
southeast on Sunday as the first line of convergence pass across
the islands. This weak convergence will only increase sky coverage
while showers remain at isolated. However...RAOB from this
afternoon depicts a very stable and dry profile. Therefore expect
isolated showers during the short term except for Saturday with
scattered showers.

.Long term...
MONDAY THROUGH FRIDAY...The second band of convergence will pass
across the islands on Monday. This wave will bring numerous
showers follow by other bands extending showers to Thursday.
Another strong high pressure will again increase trades to breezy
conditions on Thursday as it displace to the far south. Moisture
will then be pushed westward.


Aunuu buoy continues to show seas to 9 to 12 ft. These conditions
will persist tonight before subsiding 8 to 10 ft on Saturday
night. Seas will subside below advisory levels on Tuesday.


High surf advisory remains in effect until Monday night.
Small craft advisory remains in effect until Monday night.



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