854
AXPQ20 PGUM 250134
TWDPQ

Tropical Weather Discussion
National Weather Service Tiyan GU
1134 AM ChST Tue Jun 25 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...

ITCZ...
An ITCZ stretches eastward from just north of Pohnpei near 8N157E to
beyond the Date Line near 9N. Deep convection is seen from north of
Pohnpei, with increasing coverage eastward across the Marshall
Islands. This feature is expected to meander north and south over the
next couple of days as it slowly weakens and fragments.

NEAR EQUATORIAL TROUGH... A Near-Equatorial Trough (NET) enters the
region near 7N130E, extending southeastward to end near EQ140E in
southeastern Yap State. Moderate convection is associated with this
feature in a convergence zone near and south of the trough. Deep
convection is seen to the north of the NET, near Yap Proper, where a
trade-wind trough and a TUTT low are interacting with the NET.
Models show the NET will meander south and west of Yap and Palau,
with convergence and impinging trade-wind troughs bringing enhanced
potential for showers and thunderstorms to Yap and Palau this
weekend.

TRADE-WIND TROUGHS...
A trade-wind trough is seen to the east of Yap Proper, interacting
with the NET. As mentioned in the NET section above, moderate to deep
convection is associated with this trough as it interacts with the
NET. Model guidance shows this feature moving westward over the next
few days, spreading deep convection across Palau. Another trade-wind
trough is seen near Weno Chuuk, producing mostly moderate convection,
with a couple of embedded thunderstorms, across western Chuuk State
into eastern Yap State.

TUTT...
A TUTT crosses 130E near 19N and extends stretches southeastward
toward Yap Proper into a TUTT low centered near 10N142E. It then
turns east-northeast through a second low centered near 17N163E to
beyond the Date Line near 22N. Divergence associated with the TUTT
and first low are enhancing convection near Yap Proper eastward to
near Chuuk. Little convection or cloud cover is associated with the
second low. The TUTT lows look to drift westward over the coming
days, with the trough becoming less organized and degrading.

$$

Kleeschulte