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AXPQ20 PGUM 172054

TWDPQ 



Tropical Weather Discussion

National Weather Service Tiyan GU

654 AM ChST Thu Apr 18 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 Near-Equatorial trough extends from 3N138E to a new weak and 

diffuse circulation near 3N140E before curving southeast to

EQ146E. Convergence near this feature is producing widely

scattered pockets of convection.



TRADE-WIND TROUGHS...

A surface trough in the trades extends from 4N150E to northwest of

Chuuk at 10N150 then north-northeast to 18N151E.



Another trough extends just west of the RMI from 10N161E to

northwest of Wake Island at 21N163E. not much convection is

developing near either of these features.



...DISCUSSION...

"Most" of the widely scattered convection is developing from 130E

to the Dateline and mainly between 4N and 8N where the moisture

plume with higher PWATs is located, as is typically found.

Embedded troughs in the flow are helping to focus the convection

some, but these features are weak and the lack of a more

widespread/heavier convective signature precludes classifying it

as an ITCZ. With the El Nino Drought continuing, the models show

this pattern will continue through the weekend and much of next

week, with just an occasional spike in shower potential locally

across western and eastern Micronesia.



$$



Doll