WWMY80 PGUM 110734
SPSGUM

Special Weather Statement
National Weather Service Tiyan GU
534 PM ChST Sat Apr 11 2026

GUZ001-MPZ001>003-111000-
Guam-Rota-Tinian-Saipan-
534 PM ChST Sat Apr 11 2026

Typhoon Sinlaku (04W) continues to organize north-northwest of
Chuuk. Sinlaku is starting to slowly move northward and will
start to move northwest and towards the Marianas as it increases
in forward speed. TY Sinlaku is expected to strengthen as it
approaches the Marianas, possibly crossing Guam as a category 3 or
4 typhoon. While small adjustments in the forecast track are to be
expected, overall guidance continues to support passage near Guam.
A Typhoon Watch is in effect for Guam, Rota, Tinian and Saipan, for
the possibility of Typhoon conditions with on the onset of damaging
wind within 48 hours.

A breezy, but relatively dry trade-wind pattern are still in place
this evening, but as TY Sinlaku closes in, winds are expected to
increase with conditions deteriorating late Sunday.
The Marianas should make preparations for the potential for
Tropical Storm to Typhoon force winds, with the most likely time of
Tropical Storm-force winds Monday evening. For the Far Northern
Mariana Islands, breezy and choppy sea conditions are expected late
this weekend and into early next week, with potential for Tropical
Storm-force winds around Tuesday night.

There is the potential for 15 to 20 inches of rainfall between
Sunday night and Wednesday, especially near the center of TY
Sinlaku. Given the current forecast track, this potential is
highest for Guam and Rota, with 8 to 15 inches possible for Tinian
and Saipan. However, a shift in the forecast track could shift
the area of heaviest rainfall. Widespread showers, torrential rain
and scattered thunderstorms are expected as Sinlaku moves through
the Marianas late Monday through Wednesday morning.

For further updates, see the Typhoon Local Statement issued by the
National Weather Service Guam under WMO header WTPQ81.

$$

Schank