215
AXPQ20 PGUM 070037
TWDPQ

Tropical Weather Discussion
National Weather Service Tiyan GU
1037 AM ChST Sun Dec 7 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...

NEAR EQUATORIAL TROUGH...
Today the NET enters Guam`s AOR at 5N130E and extends east-
southeast to EQ164E. Pockets of scattered showers and isolated
thunderstorms are occurring along and south of this feature. There
does appear to be an elevated buffer circulation near EQ140E,
locally enhancing convective coverage and vigor there. The NET
looks to gradually settle south to near 2N or 3N by mid-week, with
a similar convective behavior anticipated.

TRADE-WIND TROUGHS...
A large southwest to northeast-orientated swath of 15 to 20 knot
winds are found east of 160E centered mainly between 8N and 23N.
Here, altimetry shows seas are generally in the 9 to 12 foot
range. Winds in this region look to gradually weaken the next few
days, allowing seas to subside a foot or two (perhaps more).

OTHER SYSTEMS...
A shear line enters Guam`s AOR at 25N150E (between Iwo To and
Minami Torishima) and extends west-southwest to 18N130E, where it
exits Guam`s AOR. along and behind this feature, abundant cloud
cover with showers are occurring, especially within 300 miles
north of the shear line. This feature looks to continue to slowly
sink south the next few days, with showers continuing along and
north of it.

Another remnant shear line has become more invigorated today,
stretching from 15N180 to south of Majuro, through Kosrae and
Pohnpei, to end east of Chuuk near 8N153E. Near and north of this
feature, scattered showers are occurring. Additionally, a few
thunderstorms are also occurring east-northeast of Chuuk along the
"tail end" of this shear line, where convergence is interacting
with a disturbance aloft to increase lift and thus, thunderstorm
development. In general, this shear line looks to remain quasi-
stationary the next few days as it dissolves.

$$

Doll