987
WTPQ81 PGUM 251025
HLSPQ1

URGENT - IMMEDIATE BROADCAST REQUESTED
TROPICAL DEPRESSION KROSA (12W) LOCAL STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
825 PM ChST Fri Jul 25 2025

...TS KROSA WEST-NORTHWEST OF ANATAHAN CONTINUING NORTH...

.NEW INFORMATION...
None.

.AREAS AFFECTED...
This local statement provides information and recommended actions
for people in the far Northern Marianas.

.WATCHES/WARNINGS...
A Tropical Storm Warning remains in effect for Agrihan, Pagan, and
Alamagan.

Please check the latest public and marine forecasts for detailed
information about additional hazards.

.STORM INFORMATION...
At 7 PM ChST...the center of Tropical Storm Krosa (12W) was located
near latitude 17.5N...longitude 143.4E, about 160 miles west of
Alamagan, 225 miles northwest of Saipan. Storm motion was
north-northwest at 5 mph. Maximum sustained winds remain at 45 mph.

.SITUATION OVERVIEW...
Tropical Storm Krosa is expected to make a slight turn to the north-
northeast through Saturday, coming near enough to the far northern
CNMI to bring tropical storm force winds to Agrihan, Pagan, and
Alamagan beginning tonight.

.PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek suitable shelter in a hardened structure well-protected from
tropical storm wind exposure. Prepare sufficient food and water for
a day or two, as strong monsoon winds will likely persist after the
passage of Tropical Storm Krosa.

&&

.NEXT UPDATE...
The next local statement will be issued at 3 AM ChST, or sooner if
conditions warrant.

...AGRIHAN...PAGAN AND ALAMAGAN...

...A TROPICAL STORM WARNING REMAINS IN EFFECT...

.PRECAUTIONARY/PREPAREDNESS ACTIONS...
Seek a suitable hardened shelter where available, ideally a concrete
structure. Prepare sufficient food and water for each person for a
day or two, because a monsoon surge is likely to continue for a while
after Tropical Storm Krosa has passed.

.WIND INFORMATION...
The latest forecast track shows Krosa moving generally north-
northeastward through Sunday, passing near or just west of Maug
Saturday night, then turning slightly back towards the north on
Sunday. The passage of Krosa west of the islands will cause southeast
winds to shift more southerly and increase through tonight, with
widespread locally heavy showers bringing frequent strong gusts.
Latest forecast projections show southerly tropical storm winds of 35
to 45 mph arriving overnight, gradually shifting from south to
southwest through Saturday, remaining out of the southwest as winds
diminish through Sunday. For islands further to the north and west,
including Agrihan, strong tropical storm force winds of 50 to 60 mph
will be possible as early as Saturday morning until early Sunday
morning. After the passage of TS Krosa, a strong southwest monsoon
pattern will prolong windy conditions through Sunday night.

.COASTAL INUNDATION AND SURF INFORMATION...
Surf will continue to rise along south and west facing reefs tonight
with a greater increase along west facing reefs Saturday, well
exceeding hazardous levels of 9 ft. Surf along these windward shores
will likely exceed dangerous levels of 15 ft through Saturday before
peaking at 15 to 20 ft Saturday night. Surf will begin to subside
Sunday, possibly falling below 15 ft dangerous levels by Sunday
night. Surf will likely remain at hazardous levels of 10 to 14 ft
into early next week due to the persistent monsoon flow. Rip currents
during this time will be strong and life threatening. Stay out of
the water. Wind and wave-driven coastal inundation of 1 to 3 ft will
be possible along windward shores, especially around times of high
tide as surf reaches peak heights Saturday and Sunday.

.OTHER STORM EFFECTS...
Widespread locally heavy showers will increase Saturday and Sunday
as TS Krosa passes to the west, with the bulk of rainfall expected
from early Saturday morning through Saturday night. Additional
rainfall accumulations of 6 to 10 inches are possible through Monday.
Even after Krosa begins to move away Sunday and Monday, a wet
monsoon pattern will prolong showers across the islands.

$$

DeCou