742
AXPQ20 PGUM 230041
TWDPQ

Tropical Weather Discussion
National Weather Service Tiyan GU
1041 AM ChST Sun Nov 23 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...

TROPICAL AND MONSOON DISTURBANCES...
A weak tropical disturbance, now Invest 92W, is centered near 6N134E.
This disturbance is generating numerous to widespread showers and
isolated thunderstorms, with locally heavy rainfall and winds
gusting as high as 40 mph, across Palau and western Yap State,
including Yap Proper. Invest 92W is expected to move toward the
west-northwest over the next few days as it slowly strengthens over
the Philippine Sea.

...OTHER WEATHER SYSTEMS...

NEAR EQUATORIAL TROUGH...
The Near Equatorial Trough (NET) stretches east-southeast from
Mindanao, crossing 130E near 8N, into Invest 92W. The NET then
continues east-southeast to beyond the Equator near 162E. Scattered
showers and isolated thunderstorms are found west of Invest 92W
along the NET, with scattered to numerous showers found along the
NET from east of Yap Proper to south of Kosrae, near the Equator.
The NET looks to drift north over the western end as Invest 92W
moves toward the west-northwest. The remainder of the NET is
expected to remain quasi-stationary, with little change in intensity
over the next few days.

TRADE-WIND TROUGHS...
Three trade-wind troughs are evident across the region this morning.
The first is found between Pohnpei and Weno, Chuuk, extending
northwest from near 6N158E to end near 10N155E. Only spotty showers
are found along this trough. The trough is expected to continue to
move slowly west-southwest with little change in intensity over the
next few days, possibly interacting with the eastern end of the NET
later this week.

The next trough is found east of Majuro, extending north-northeast
from near 6N174E to end near 12N176E. The trough is interacting with
the weak ITCZ to generate a couple of thunderstorms east of Majuro.
The trough looks to continue to move west over the next few days,
possibly strengthening the ITCZ as it slowly strengthens.

The last trade-wind trough is found along the Date Line, extending
north from near 5N180 to end near 10N180. This trough is interacting
with the ITCZ to generate scattered to numerous showers and
isolated thunderstorms east of 178E. The trough is expected to
continue to move west with little change in intensity through the
next few days. This trough could help to intensify the ITCZ as it
moves across the boundary.

TUTT...
A weak TUTT enters the AOR near 19N180, extending southwest to a
weak TUTT low centered near 12N172E, then continues west-southwest
to end near 6N155E. Only spotty clouds and showers are found
along the TUTT. Isolated thunderstorms are also evident with the
TUTT cell. The TUTT will remain quasi-stationary over the coming
days as it slowly weakens.

OTHER SYSTEMS...

SHEAR LINE...
A weak shear line extends southwest across 25N142E to beyond 130E
near 20N. Patchy cloudiness and showers are found north of the
shear line to beyond 25N.The shear line looks to slowly move east
over the next few days as it slowly weakens.

...ITCZ...
A weak ITCZ extends eastward across the Date Line near 9N to end near
8N170E. Mostly isolated showers with a couple of thunderstorms are
found west of 178E. A weak trade-wind trough is interacting with the
far western end of the ITCZ to help generate the couple of
thunderstorms. Near the Date Line, another trade-wind trough,
located right along the Date Line, is interacting with the ITCZ to
produce scattered to numerous showers and isolated thunderstorms east
of 178E. The ITCZ is expected to slowly strengthen westward over the
coming days.

$$

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