371
WTPQ81 PGUM 251707
HLSPQ1
URGENT - IMMEDIATE BROADCAST REQUESTED
TROPICAL STORM KROSA (12W) LOCAL STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
307 AM CHST SAT JUL 26 2025
..TROPICAL STORM KROSA NOW WEST OF PAGAN AND MOVING NORTHEAST
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 1 AM CHST...THE CENTER OF TROPICAL STORM KROSA (12W) WAS LOCATED
NEAR LATITUDE 18.0N...LONGITUDE 143.8E, ABOUT 130 MILES WEST OF
PAGAN, 235 MILES NORTH-NORTHWEST OF SAIPAN. STORM MOTION WAS
NORTHEAST AT 7 MPH. MAXIMUM SUSTAINED WINDS HAVE INCREASED TO 50 MPH.
SITUATION OVERVIEW
TROPICAL STORM KROSA IS EXPECTED TO MAKE A SLIGHT TURN TO THE NORTH-
NORTHEAST TODAY, COMING NEAR ENOUGH TO THE FAR NORTHERN CNMI TO
BRING TROPICAL STORM FORCE WINDS TO AGRIHAN, PAGAN, AND ALAMAGAN
BEGINNING EARLY THIS MORNING. DAMAGING WINDS ARE EITHER IMMINENT OR
ALREADY OCCURRING AT ALAMAGAN.
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 9 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 THIS MORNING, WITH
WIDESPREAD LOCALLY HEAVY SHOWERS BRINGING FREQUENT STRONG GUSTS.
LATEST FORECAST PROJECTIONS SHOW SOUTHERLY TROPICAL STORM WINDS OF 35
TO 45 MPH ARRIVING THIS MORNING AT PAGAN AND ALAMAGAN, GRADUALLY
SHIFTING FROM SOUTH TO SOUTHWEST TODAY, REMAINING OUT OF THE
SOUTHWEST AS WINDS DIMINISH THROUGH SUNDAY. FOR ISLANDS FURTHER TO
THE NORTH, INCLUDING AGRIHAN, STRONG TROPICAL STORM FORCE WINDS OF
50 TO 60 MPH WILL BE POSSIBLE FROM THIS 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 THIS
MORNING, WELL EXCEEDING HAZARDOUS LEVELS OF 9 FT. SURF ALONG THESE
WINDWARD SHORES WILL LIKELY EXCEED DANGEROUS LEVELS OF 15 FT TODAY
BEFORE PEAKING AT 15 TO 20 FT TONIGHT. 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 FEET
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 THROUGH SUNDAY.
OTHER STORM EFFECTS
WIDESPREAD LOCALLY HEAVY SHOWERS WILL INCREASE THROUGH SUNDAY AS
TS KROSA PASSES TO THE WEST, WITH THE BULK OF RAINFALL EXPECTED
THROUGH TONIGHT. 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.
STANKO
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