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AXPQ20 PGUM 082343 CCA
TWDPQ

Tropical Weather Discussion...CORRECTED
National Weather Service Tiyan GU
943 AM ChST Sun Nov 9 2025

Tropical Weather Discussion for the Western North Pacific between
the Equator and 25N from 130E to 180. The following information is
based on recent satellite imagery/data, weather observations, radar,
and meteorological analysis.

...SPECIAL FEATURES...

None.

...OTHER WEATHER SYSTEMS...

TRADE-WIND TROUGHS...
A surface trough in the trades stretches from EQ150E to southeast
of Guam where it ends at 11N146E. Numerous showers and isolated
thunderstorms are occurring along and behind this feature, mainly
south of 10N. The models show this feature will move slowly west
the next few days as it bumps into a ridge. A similar amount of
convection is expected as it does so.

Another trough stretches from south of Kosrae near 2N164E to east
of Majuro before ending near 11N175E. Most of the convection, in
the form of numerous showers and isolated thunderstorms, is found
between 4N and 9N as the ITCZ helps focus convergence in this
region. This looks to remain the case the next few days as the
trough heads west.

OTHER SYSTEMS...
An upper-level trough enters Guam`s AOR near 25N161E and extends
south-southwest to a low southeast of Wake Island, continuing on
to end at a col near Pohnpei (just south of), This feature is
providing good divergence aloft, helping ventilate cloud tops
associated with the Kosrae/Majuro trough mentioned above. This
feature (the upper trough), is forecast to elongate and flatten
out in a more east-west form by the middle of the week.

...ITCZ...
Today, the ITCZ stretches from Kosrae eastward, centered between
4N and 9N, extending to the Date Line and beyond. Convection is
fairly widespread in this region, which will expand west over the
next few days, led by a westward expansion of the ITCZ.

$$

Doll