541
WTPQ81 PGUM 111735
HLSPQ1
URGENT - IMMEDIATE BROADCAST REQUESTED
TYPHOON SINLAKU (04W) LOCAL STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
335 AM CHST SUN APR 12 2026
...TYPHOON SINLAKU STRENGTHENING AS IT SLOWLY LEAVES CHUUK STATE,
HEADING TOWARDS THE MARIANAS...
NEW INFORMATION
NONE.
AREAS AFFECTED
THIS LOCAL STATEMENT PROVIDES IMPORTANT INFORMATION AND
RECOMMENDED ACTIONS FOR PEOPLE IN CHUUK, GUAM, AND THE NORTHERN
MARIANAS.
WATCHES/WARNINGS
A TYPHOON WATCH CONTINUES FOR ULUL, GUAM, ROTA, TINIAN, AND
SAIPAN.
A TYPHOON WARNING REMAINS IN EFFECT FOR FANANU IN CHUUK STATE.
A TROPICAL STORM WARNING REMAINS IN EFFECT FOR CHUUK AND ULUL IN
CHUUK STATE.
A TYPHOON WATCH REMAINS IN EFFECT FOR ULUL IN CHUUK STATE.
A TYPHOON WATCH REMAINS IN EFFECT FOR GUAM, ROTA, TINIAN AND SAIPAN.
A TYPHOON WARNING MEANS THAT TYPHOON CONDITIONS, INCLUDING WINDS
OF 74 MPH OR MORE, ARE OCCURRING.
A TROPICAL STORM WARNING MEANS THAT TROPICAL STORM CONDITIONS,
INCLUDING WINDS OF 39 TO 73 MPH, ARE EXPECTED WITHIN 24 HOURS.
A TYPHOON WATCH MEANS THAT TYPHOON CONDITIONS, INCLUDING WINDS OF 74
MPH OR MORE, ARE POSSIBLE WITHIN 48 HOURS.
A FLOOD WATCH IS IN EFFECT FOR ALL OF GUAM AND THE NORTHERN
MARIANAS. PLEASE LISTEN CLOSELY FOR ANY FLASH FLOOD WARNINGS THAT
MIGHT BE IN EFFECT ONCE HEAVY RAINFALL ARRIVES.
PLEASE CHECK THE LATEST PUBLIC AND MARINE FORECASTS FOR DETAILED
INFORMATION ABOUT ADDITIONAL HAZARDS.
STORM INFORMATION
AT 100 AM CHST...1500 UTC...THE CENTER OF TYPHOON SINLAKU WAS
LOCATED NEAR LATITUDE 9.2 DEGREES NORTH AND LONGITUDE
150.9 DEGREES EAST. SINLAKU IS MOVING NORTHWEST AT 5 MPH. IT IS
EXPECTED TO MAINTAIN THIS GENERAL COURSE WITH A SLIGHT INCREASE
IN FORWARD SPEED THROUGH MONDAY.
SITUATION OVERVIEW
TYPHOON SINLAKU (04W) IS SLOWLY MOVING AWAY FROM CHUUK STATE. IT
CONTINUES TO BRING PERIODS OF INTENSE SHOWERS, THUNDERSTORMS, AND
WINDS AS IT CONTINUES TO CONSOLIDATE AND INTENSIFY. TYPHOON SINLAKU
WILL CONTINUE TO MOVE NORTHWEST ON ITS JOURNEY TOWARD THE MARIANAS.
IT IS TOO EARLY TO PROVIDE EXACT WIND AND SURGE FORECAST VALUES FOR
SPECIFIC LOCATIONS IN THE MARIANAS, BUT THE GENERAL CONCERN SHOULD BE
FOR THE POSSIBILITY OF DEVASTATING DAMAGE SOMEWHERE WITHIN THE
MARIANAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS
FOR THOSE UNDER A WATCH...NOW IS THE TIME TO FINALIZE YOUR
PREPARATIONS ACCORDING TO YOUR TYPHOON DISASTER PLAN SPECIFIC TO YOUR
HOME OR BUSINESS. FOR THOSE IN THE FAR NORTHERN MARIANAS, REVIEW
YOUR TYPHOON DISASTER PLANS AND BECOME READY TO ACT IF A WATCH OR A
WARNING IS LATER ISSUED FOR YOUR AREA.
FOR INTERESTS AT PORTS...DOCKS...AND MARINAS...IT IS RECOMMENDED
THAT YOU PERFORM THE PRESCRIBED PREPARATIONS ACCORDING TO YOUR
EMERGENCY OPERATIONS PLAN FOR TROPICAL CYCLONES. IF YOU LIVE ON A
BOAT...BEGIN TO SAFELY SECURE YOUR CRAFT AND MAKE PLANS TO LEAVE
IT FOR ADEQUATE LAND BASED SHELTER. LISTEN FOR POSSIBLE WARNINGS.
SMALL CRAFT SHOULD RETURN TO PORT OR SEEK SAFE HARBOR.
STAY INDOORS ONCE HEAVY RAIN AND WINDY CONDITIONS ASSOCIATED WITH
TYPHOON SINLAKU (04W) START. THE ONSET OF DAMAGING, AND POTENTIALLY
DESTRUCTIVE WINDS, WILL POSE A DEADLY THREAT TO THOSE VENTURING
OUTSIDE.
CLOSELY MONITOR NOAA WEATHER RADIO OR OTHER LOCAL NEWS OUTLETS
FOR OFFICIAL STORM INFORMATION. LISTEN FOR POSSIBLE CHANGES TO
THE FORECAST.
FOR ADDITIONAL PRECAUTIONARY AND PREPAREDNESS INFORMATION...
PLEASE REFER TO THE DETAILED RECOMMENDATIONS RELATIVE TO YOUR
LOCATION AS FURTHER DESCRIBED BY THE NATIONAL WEATHER SERVICE OFFICE
IN TIYAN, GUAM AND YOUR LOCAL EMERGENCY MANAGEMENT.
NEXT UPDATE
THE NEXT LOCAL STATEMENT WILL BE ISSUED BY THE NATIONAL WEATHER
SERVICE IN TIYAN AROUND 9 AM CHST...OR SOONER IF CONDITIONS WARRANT.
GUZ001-MPZ001>003-112345-
/O.CON.PGUM.TY.A.4004.000000T0000Z-000000T0000Z/
GUAM-ROTA-TINIAN-SAIPAN-
335 AM CHST SUN APR 12 2026
..TYPHOON WATCH REMAINS IN EFFECT
..PRECAUTIONARY/PREPAREDNESS ACTIONS
ITEMS TO BRING TO A SHELTER INCLUDE A FIRST AID KIT, MEDICINES AND
PRESCRIPTIONS, BABY FOOD AND DIAPERS, GAMES AND BOOKS, TOILETRIES, A
BATTERY POWERED RADIO, A CELL PHONE, FLASHLIGHTS WITH EXTRA
BATTERIES, A BLANKET OR SLEEPING BAG FOR EACH PERSON, PERSONAL
IDENTIFICATION, COPIES OF KEY PAPERS SUCH AS INSURANCE POLICIES,
AVAILABLE CASH AND CREDIT CARDS. REMEMBER, PETS ARE NOT ALLOWED IN
MOST PUBLIC SHELTERS, SO CHECK AHEAD WITH YOUR INTENDED SHELTER.
REGARDING YOUR HOME OR BUSINESS, COVER ALL WINDOWS AND DOORS WITH
SHUTTERS OR PLYWOOD. MOVE PATIO FURNITURE AND OTHER LOOSE OBJECTS
INDOORS. BRACE ALL EXTERIOR DOORS, INCLUDING GARAGE DOORS. DO
THIS AS EARLY AS POSSIBLE. IF YOU NEED TO MAKE A TRIP TO THE HARDWARE
STORE, THE GROCERY STORE, OR THE GAS STATION, DO SO AS EARLY AS
POSSIBLE.
STAY CALM AND KEEP INFORMED. COMPLY WITH ANY EVACUATION ORDERS THAT
ARE ISSUED FOR YOUR AREA. IF YOU LIVE IN A METAL ROOF OR CONTAINER
HOME, OR YOU LIVE IN A SURGE ZONE OR ANY LOCATION PRONE TO FLOODING,
EVACUATE TO A DESIGNATED SHELTER OR RIDE OUT THE STORM IN THE STURDY
HOME OF FAMILY OR FRIENDS OUTSIDE OF EVACUATION ZONES.
..WIND INFORMATION
AS TYPHOON SINLAKU (04W) MOVES CLOSER, THE THREAT FOR SUSTAINED HIGH
WINDS IS LIKELY TO INCREASE. THE LATEST FORECAST IS FOR TROPICAL
STORM FORCE WINDS TO BEGIN AFFECTING THE MARIANAS MONDAY MORNING.
TYPHOON FORCE WINDS WILL POSSIBLY MOVE INTO GUAM AND ROTA MONDAY
NIGHT OR EARLY TUESDAY MORNING, WITH STRONG TROPICAL STORM FORCE
WINDS INTO TINIAN AND SAIPAN EARLY TUESDAY MORNING. TYPHOON SINLAKU
COULD POTENTIALLY NEAR THE MARIANAS AS A CATEGORY 3 OR 4 TYPHOON. A
GENERAL CONCERN SHOULD BE FOR THE POSSIBILITY OF AT LEAST EXTENSIVE
DAMAGE SOMEWHERE WITHIN THE ISLANDS UNDER THE TYPHOON WATCH.
..COASTAL INUNDATION AND SURF INFORMATION
DUE TO HIGHER ASTRONOMICAL TIDES NEXT WEEK AND PRE-EXISTING ELEVATED
SEAS DUE TO NON-TC FEATURES IN THE AREA, HAZARDOUS SURF IS LIKELY TO
BECOME DANGEROUS ACROSS NORTH, EAST AND SOUTH REEFS IN THE MARIANAS
AS SURF BUILDS TO 15 FEET, AND POTENTIALLY SPREADING TO WEST FACING
REEFS ONCE TY SINLAKU MOVES WEST OF THE ISLANDS. COASTAL INUNDATION
BECOMING LIKELY AS EARLY AS MONDAY MORNING SO A COASTAL FLOOD WATCH
IS IN EFFECT STARING MONDAY MORNING FOR SIGNIFICANT COASTAL
INUNDATION OF 2 FEET OR MORE POSSIBLE. INLAND FLOODING MADE WORSE BY
DEVELOPING RAIN BANDS DURING STORM PASSAGE WILL SIGNIFICANTLY
INCREASE COASTAL INUNDATION AS RAIN RUN-OFF AND STORM SURGE INTERACT.
SURF WILL BE SLOW TO DECREASE AFTER SINLAKU'S EXIT TO THE NORTHWEST
IN THE SECOND HALF OF THE WEEK, AS SWELLS WILL CONTINUE TO PUMMEL
WESTERN MARIANAS SHORES.
..OTHER STORM EFFECTS
HEAVY, INTENSE RAINFALL WITH TY SINLAKU IS LIKELY FOR MUCH OF THE
WEEK, WITH RAINFALL AMOUNTS UPWARDS OF 15 TO 20 INCHES NEAR THE
CENTER, AS THE SYSTEM CROSSES THE MARIANAS. THE EXACT TRACK
OF SINLAKU WILL DETERMINE WHERE THE HEAVIEST RAINFALL WILL SET UP
ACROSS THE ISLANDS. AS SUCH, A FLOOD WATCH REMAINS IN EFFECT FOR
GUAM, ROTA, TINIAN, AND SAIPAN. SEE LATEST FORECAST FOR LATEST
INFORMATION. LISTEN FOR POSSIBLE FLASH FLOOD WARNINGS FOR YOUR
LOCATION, AND BE READY TO ACT IF FLASH FLOODING DEVELOPS.
..CHUUK
..TROPICAL STORM WARNING REMAINS IN EFFECT FOR CHUUK
PRECAUTIONARY/PREPAREDNESS ACTIONS
STAY INDOORS DURING HEAVY RAIN AND WINDY CONDITIONS ASSOCIATED WITH
TYPHOON SINLAKU (04W). HEED THE ADVICE OF YOUR LOCAL EMERGENCY
MANAGERS AND OFFICIALS AND MONITOR FORECASTS BY YOUR LOCAL NATIONAL
WEATHER SERVICE OFFICE. REMAIN IN A STURDY SHELTER UNTIL THE ALL
CLEAR IS GIVEN.
..WIND INFORMATION
WINDS WILL BE SOUTH TO SOUTHWEST WINDS AT 35 TO 45 MPH WITH GUSTS TO
60 MPH AT WENO, CHUUK THIS MORNING, AS SINLAKU SLOWLY MOVES AWAY TO
THE NORTHWEST. AS SINLAKU CONTINUES TO MOVE SLOWLY THROUGH THE REGION
AND TOWARDS THE MARIANAS, TROPICAL STORM FORCE WINDS SHOULD START TO
SLOWLY SUBSIDE THIS MORNING AND INTO THE AFTERNOON HOURS WITH WINDS
BECOMING SOUTHERLY.
..COASTAL INUNDATION AND SURF INFORMATION
SEAS OF 12 TO 14 FEET ARE OCCURRING. THIS WILL RESULT IN DANGEROUS
SURF OF 13 TO 16 FEET ALONG SOUTH AND WEST-FACING REEFS, WITH 1 TO 2
FEET OF INUNDATION LIKELY. ELSEWHERE, HAZARDOUS SURF OF 7 TO 9 FEET
ARE EXPECTED.
..OTHER STORM EFFECTS
SATELLITE MICROWAVE ESTIMATES AND MODEL GUIDANCE SUGGEST THE
POTENTIAL FOR HEAVY RAIN WILL DECREASE THROUGH THIS MORNING.
ADDITIONAL RAINFALL OF 2 TO 5 INCHES IS POSSIBLE AND WITH THE
ALREADY SATURATED GROUND THE RISK FOR MUDSLIDES REMAINS HIGH RISK.
..FANANU
...TYPHOON WARNING REMAINS IN EFFECT FOR FANANU
PRECAUTIONARY/PREPAREDNESS ACTIONS
STAY INDOORS DURING HEAVY RAIN AND WINDY CONDITIONS ASSOCIATED WITH
TYPHOON SINLAKU (04W). HEED THE ADVICE OF YOUR LOCAL EMERGENCY
MANAGERS AND OFFICIALS, AND CONTINUE TO MONITOR FORECASTS BY YOUR
LOCAL NATIONAL WEATHER SERVICE OFFICE. REMAIN IN A STURDY SHELTER
UNTIL THE ALL CLEAR IS GIVEN. VENTURING OUTSIDE IS LIKELY TO POSE A
DEADLY THREAT TO LIFE.
WIND INFORMATION
WITH TYPHOON SINLAKU MOVING NORTHWEST, TYPHOON FORCE WINDS AROUND 74
WILL DECREASE THROUGH THE DAY, POTENTIALLY DECREASING TO STRONG
TROPICAL STORM FORCE WINDS OF 45 TO 60 MPH WINDS BY EVENING, MAINLY
FROM THE SOUTH TO SOUTHWEST. DAMAGING WINDS ARE EXPECTED TO
CONTINUING THROUGH THIS AFTERNOON.
COASTAL INUNDATION AND SURF INFORMATION
SEAS OF 12 TO 18 FEET ARE POSSIBLE, WITH DANGEROUS SURF AND
SIGNIFICANT COASTAL INUNDATION AND BEACH EROSION EXPECTED.
OTHER STORM EFFECTS
ANOTHER 3 TO 6 INCHES OF ADDITIONAL RAINFALL IS POSSIBLE WITHIN THE
OUTER BANDS AS THE CENTER OF TY SINLAKU MOVES OFF TO THE NORTHWEST.
..ULUL
..TYPHOON WATCH REMAINS IN EFFECT FOR ULUL
..TROPICAL STORM WARNING REMAINS IN EFFECT FOR ULUL
.PRECAUTIONARY/PREPAREDNESS ACTIONS
STAY INDOORS DURING HEAVY RAIN AND WINDY CONDITIONS ASSOCIATED WITH
TYPHOON SINLAKU (04W). HEED THE ADVICE OF YOUR LOCAL EMERGENCY
MANAGERS AND OFFICIALS, AND CONTINUE TO MONITOR FORECASTS BY YOUR
LOCAL NATIONAL WEATHER SERVICE OFFICE. REMAIN IN A STURDY SHELTER
UNTIL THE ALL CLEAR IS GIVEN. VENTURING OUTSIDE IS LIKELY TO POSE A
DEADLY THREAT TO LIFE.
WIND INFORMATION
TROPICAL STORM FORCE WINDS CONTINUE AT ULUL, AS SINLAKU HAS BEGUN TO
MOVE AWAY SLOWLY. DAMAGING WESTERLY WINDS OF 40 TO 55 MPH WILL START
TO DECREASE SUNDAY, BUT DAMAGING WINDS OF AT LEAST 40 MPH ARE EXPECTED
THROUGH AT LEAST EARLY MONDAY MORNING, WITH WINDS BECOMING MORE
SOUTHWEST AND SOUTH IN AS SINLAKU CONTINUES TO MOVE AWAY TOWARD THE
MARIANAS.
COASTAL INUNDATION AND SURF INFORMATION
SEAS OF 10 TO 16 FEET ARE POSSIBLE, WITH DANGEROUS SURF AND
SIGNIFICANT COASTAL INUNDATION AND BEACH EROSION EXPECTED.
OTHER STORM EFFECTS
ANOTHER 3 TO 6 INCHES OF ADDITIONAL RAINFALL IS IS POSSIBLE WITHIN
AS THE CENTER OF TY SINLAKU MOVES NORTHWEST TOWARDS THE MARIANAS.
DOLL
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