731
AXPQ20 PGUM 050111
TWDPQ

Tropical Weather Discussion
National Weather Service Tiyan GU
1111 AM ChST Fri Jul 5 2024

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...

NEAR EQUATORIAL TROUGH...
A NET extends from 8N130E passes south of Koror to 6N141E southeast
of Yap. Spotty showers are seen to north and west of Koror and over
Yap and along a line from 11N132E to 9N140E where winds are
converging north of the trough. This feature will generally shift
westward over the coming days and may possibly develop into weak low-
level circulation. The trough extends past 9N140E through 4N146E to
6N149E, potentially ending at a weak circulation southwest of Chuuk.
This circulation is expected to move west as a trough.

TRADE-WIND TROUGHS...
A couple of trade-wind troughs exist across the region. The first
extends from 7N159E to EQ167E south of Pohnpei. This trough is
supported by moderate upper divergence, causing locally heavy showers
near Nukuoro. The next trough extends from 7N162E near Kosrae to
EQ160E southeast of Kosrae and is producing spotty showers. These
trade-wind troughs will likely weaken as they travel west across the
region. Another trough extends from 6N149E to 12N149E southeast of
the Marianas, associated with the potential circulation southwest of
Chuuk. This trough is expected to track west and skirt across Guam`s
coastal waters bringing some showers to Guam Saturday.

TUTT...
A Tropical Upper-Tropospheric Trough (TUTT) extends from 25N176E to
15N172E to 11N157E ending near the northern Marshalls. Moderate to
strong upper divergence is seen north and east of Majuro associated
with the TUTT and is generating numerous showers and scattered
thunderstorms. This TUTT will move west out of the Marshalls and
convective showers are expected to move southwest and bring showers
to Kosrae around Saturday. Another TUTT extends from 22N142E through
an upper- low centered near 19N137E and exits the AOR at 14N130E.
This is generating some instability over an area where spotty showers
are seen west of Koror. This TUTT is expected to shift west and be
out of the AOR late SAturday.

$$

Hong