Area Forecast Discussion
Issued by NWS Pago Pago

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FXZS60 NSTU 250125
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago  AS
225 PM SST Wed Apr 24 2024

.DISCUSSION...
An elongated and strong high pressure system centered near New
Zealand continues to migrate eastward as it produces an easterly
flow over the area. A boundary layer associated with the
aforementioned high pressure will likely move closer to the
islands, increasing the potential for showers across the territory
compared to the last 24 to 36 hours. Upper air observations (RAOB)
from this afternoon (25/00Z) shows an unstable atmosphere over the
area. The RAOB further supports the latest conditions shown on the
satellite imagery. Thus, expect scattered showers with a moderate
easterly flow for tonight through the short-term forecast period.

Once the high pressure system exits the region to the east, a
moderate to fresh easterly flow will persist throughout the
forecast period. Expect numerous showers, heavy at times with
embedded thunderstorms and consistent easterly flow for the new
week.

&&

.Marine...
Serene and calm conditions was observed throughout the day.
These conditions will remain across the coastal waters through
tonight, as seas of 4 to 6 feet lingers. Model data show seas
slightly building to 5 to 7 feet by Thursday morning through the
rest of the forecast period. Although these heights are below
advisory thresholds for small crafts and high surfs, model
solutions are showing a trough to the far east and north, moving
westward, possibly producing gusty winds and thunderstorms for the
weekend through the end of the forecast period. Thunderstorms have
the potential to elevate seas and winds nearby.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE

&&

$$

JTAllen
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