905
AXPQ20 PGUM 090059
TWDPQ

Tropical Weather Discussion
National Weather Service Tiyan GU
1059 AM ChST Sat Aug 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...

TROPICAL CYCLONES...
At 7:00 am, Tropical Storm Podul (16W) was centered near 21.3N
143.0E, moving west-northwest at 9 mph. Numerous showers and
isolated thunderstorms are found within 200 miles south of the
center, with isolated showers seen north of the center of Podul.
Podul is expected to turn west over the coming days as it slowly
strengthens.

For more information please refer to bulletins from the Joint
Typhoon Warning Center under WMO header WTPN32 PGTW and from the
National Weather Service under WMO header WTPQ32 PGUM.

...OTHER WEATHER SYSTEMS...

TRADE-WIND AND SURFACE TROUGHS...
Several troughs are seen across the region. The first is seen to the
south of Palau, extending northwest from near 2N138E to end near
5N131E. Scattered showers are found southwest of the trough. The
trough is expected to move southwest over the next couple of days.

The next trough is found south-southwest of Guam, extending south
from near 11N143E to end near 8N143E. Scattered showers and isolated
thunderstorms are found west of the trough. This trough looks to move
southwest and weaken over the coming days.

Another trade-wind trough is found west of Weno, Chuuk, extending
northeast from south of Eauripik near 6N143E to end near 11N150E.
This trough is interacting with the TUTT to produce scattered to
numerous showers and isolated thunderstorms from southeast of Guam
to Eauripik. The trough will move west then turn southwest over the
next few days.

The next trough is seen just southwest of Kosrae, extending north-
northeast from near EQ160E to end near 4N163E. Scattered showers and
isolated thunderstorms are found along and west of the trough. This
trough will continue to move west over the next couple of days with
no change in intensity.

Another trade-wind trough is found southeast of Kosrae, extending
northeast from near 1N167E to end near 5N170E. This trough is
interacting with the developing ITCZ to generate scattered showers
and a few thunderstorms southeast of Jaluit, south of Namorik. The
trough will continue west over the coming days with little change in
intensity.

A broad, weak trade-wind trough is found east of Majuro, extending
northeast from near 6N174E to end near 11N180. Scattered showers and
a couple of thunderstorms are associated with this trough, mainly
northeast of Majuro and Arno. The trough will continue west over the
the next couple of days and is expected to slowly strengthen.

TUTT...
The TUTT enters the area near 25N176E, extending southwest to a TUTT
cell centered near 22N172E. It then turns west-southwest through
another cell centered near 15N157E, to end near 7N146E. Numerous
showers and isolated thunderstorms are found with the first cell,
with scattered showers and isolated thunderstorms southwest of the
trough, well east of Wake Island. Scattered showers and isolated
thunderstorms are also found along a col between the two cells to
the west and southwest of Wake Island. Scattered showers and
thunderstorms are seen with the second cell. Divergence associated
with the far southwestern end of the TUTT is enhancing convection
associated with a weak trade-wind trough between Guam and Weno,
Chuuk. The TUTT looks to remain quasi-stationary over the coming days
with little change in intensity.

OTHER SYSTEMS...
A band of convergence is seen to the west of Guam, stretching west
from near 14N142E to end near 14N136E. Scattered to numerous showers
and isolated thunderstorms are found along this band of convergence.
The band is expected to drift west and slowly weaken over the next
few days.

...ITCZ...
A developing ITCZ stretches west-southwest across the Date Line near
6N to end southeast of Kosrae near 3N166E. Mostly isolated showers
and thunderstorms are found along the ITCZ, except southeast of
Kosrae. A weak trade-wind trough is interacting with the ITCZ between
166E and 170E, producing scattered showers and a few thunderstorms.
The ITCZ looks to strengthen over the next couple of days as it
remains quasi-stationary.

$$

Kleeschulte