####018002239####
AXPQ20 PGUM 312116

TWDPQ 



Tropical Weather Discussion

National Weather Service Tiyan GU

716 AM ChST Thu Jun 1 2023



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.



...SIGNIFICANT/SPECIAL FEATURES...



TROPICAL AND MONSOON DISTURBANCES...

A circulation is located to the southeast of Yap near 5N142E. A 

surface trough extends from the circulation to 7N150E. The 

circulation and low-level convergence west of the circulation is 

generating spotty convection over Palau and Yap between 3N and 9N

from 135E to 145E. Convergence north of the surface trough is 

producing modest convection over Chuuk between 6N and 10N from 

145E to 153E. 



OTHER FEATURES CAUSING GALE FORCE WINDS OR HAZARDOUS SEAS...

Tropical Storm Mawar (02W) located near 24N126E is causing seas 

between 15 to 20 feet between 22N and 25N from 130E to 135E.





...OTHER WEATHER SYSTEMS...

TRADE-WIND TROUGHS...

A trade-wind trough combined with upper-level divergence is

generating a line of showers and thunderstorms north of Pohnpei 

and east of the Marianas. 



Another trade-wind trough is generating modest convection east of

Majuro. 



A third trade-wind trough is producing spotty convection west of

the Marianas. 



...DISCUSSION...

The circulation southeast of Yap will move north to a location east

of Yap. Convection will continue over Yap and Chuuk States.

Convergence north of the circulation will increase convection over

the Marianas. The trade-wind trough east of the Marianas will move

west and merge with the convection already over the that area.



The trade-wind trough now near Majuro will move west to be located

between Kosrae and Majuro in 24 hours. This and a developing ITCZ

will cause convection near and north of Kosrae and Majuro. 



The trade-wind trough west of the Marianas will dissipate in 24

hours. 



Seas will remain between 15 to 20 feet between 23N and 25N from

130E to 133E as Tropical Storm Mawar moves slowly northward. 



$$



Ziobro