Headline:
Tropical Cyclone Local Statement issued October 3 at 9:56PM ChST until October 4 at 5:00AM ChST by NWS Tiyan GU
Event:
Tropical Cyclone Local Statement
Urgency:
Expected
Effective:
October 3, 2026 - 4:56am
Expires:
October 3, 2026 - 12:00pm
Description:
...TROPICAL STORM WARNING IS CANCELLED FOR TINIAN AND SAIPAN...
...TYPHOON CHOI-WAN MOVING NORTH-NORTHEAST, AWAY FROM THE
NORTHERN MARIANAS...
.NEW INFORMATION...
The Tropical Storm Warning is cancelled for Tinian and Saipan.
.AREAS AFFECTED...
This local statement provides information and recommended actions
for people on Saipan, Tinian, Agrihan, Pagan and Alamagan in the
Commonwealth of the Northern Marianas.
.Watches/Warnings...
A Tropical Storm Warning is no longer in effect for Tinian and
Saipan.
A Typhoon Warning remains in effect for Alamagan, Agrihan and Pagan
in the CNMI.
A Flood Watch remains in effect for all of Guam and the Northern
Marianas. Please listen closely for any Flood Warnings that might be
in effect for your area.
Please check the latest public and marine forecasts for detailed
information about additional hazards.
.STORM INFORMATION...
At 7 PM ChST, the center of Typhoon Choi-wan (26W) was located
near latitude 19.8N, longitude 146.1E. This was about 440 miles
north of Guam. Storm motion was north-northeast, 30 degrees, at 10
mph. Storm intensity was 90 mph.
.SITUATION OVERVIEW...
Typhoon Choi-wan has weakened slightly as it continues moving
north-northeast, away from the Marianas, and is currently a
Category 1 storm. It is expected to intensify through Sunday,
potentially becoming Category 3 by Sunday afternoon. Tinian and
Saipan are now outside the radius of tropical storm force winds,
and the Tropical Storm Warning has been cancelled for these
locations. However, tropical storm to strong tropical storm
conditions continue for the northern islands of Alamagan, Pagan,
and Agrihan, and are expected to persist into Sunday afternoon,
with TS winds forecasted to depart Alamagan and Pagan by around
noon Sunday, and Agrihan by evening. The Typhoon Warning will
continue for these islands until Tropical Storm conditions move
away.
Instruction:
Sustained damaging tropical storm force winds are no longer
expected, however, strong to near-gale winds and frequent gale-
force gusts will continue within the surging monsoon flow south of
Typhoon Choi-wan. Continue to monitor forecasts by the National
Weather Service office in Tiyan, Guam.
Remain in suitable shelter, such as a cave or sturdy concrete
structure. Shelter in place until the all-clear is given.
.WIND INFORMATION...
Typhoon winds of 74 mph or more have begun to depart Agrihan this
evening, but tropical storm force winds of 39-73 mph will
continue for Alamagan, Pagan, and Agrihan through at least Sunday
morning as Choi-wan treks north-northeast away from the northern
CNMI, gradually strengthening through Sunday afternoon. TS winds
are currently forecasted to depart Alamagan and Pagan by around
noon Sunday, and Agrihan by around Sunday evening.
.COASTAL INUNDATION AND SURF INFORMATION...
Hazardous to dangerous surf of 12 to 16 feet along north, south,
and west facing reefs are expected to continue through tonight,
diminishing gradually as Typhoon Choi-wan moves farther away from
the northern islands through Sunday. Significant coastal erosion
and some coastal inundation remain possible as Choi-wan moves away.
.OTHER STORM EFFECTS...
Periods of torrential rain, widespread heavy showers and scattered
thunderstorms are expected to continue into early Sunday morning,
producing rainfall totals of 8 to 14 inches by early Monday
morning, with up to 20 inches of rainfall possible near the center
of the system.
Area Description:
Tinian; Saipan
Forcast Office:
NWS Tiyan GU
Sender:
w-nws.webmaster@noaa.gov