224
WWPQ82 PGUM 262247
SPSPQ2
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TIYAN GU
847 AM CHST WED MAY 27 2026
PMZ161-171-270800-
KOROR PALAU-YAP-
847 AM CHST WED MAY 27 2026
.. A DEVELOPING DISTURBANCE WILL BRING HEAVY DOWNPOURS
GUSTY
WINDS...AND CHOPPY SEAS THE NEXT FEW DAYS...
A TROPICAL DISTURBANCE, KNOWN AS JTWC'S INVEST 99W, IS CURRENTLY
CENTERED NEAR 9N137E, SOUTHWEST OF YAP PROPER. INVEST 99W CONTINUES
TO SLOWLY IMPROVE IN ORGANIZATION AS THE EASTERN HALF OF THE BROADER
CIRCULATION BEGINS TO PIVOT TO A MORE NORTHEAST TO SOUTHWEST
ORIENTATION INSTEAD OF AN EAST TO WEST ORIENTATION. THIS WILL ALLOW
FOR 99W TO BEGIN CONSOLIDATING OVER THE NEXT FEW DAYS. THE JTWC HAS
INCREASED 99W TO HIGH, WHICH MEANS DEVELOPMENT INTO A TROPICAL
CYCLONE IS LIKELY WITHIN 24 HOURS. NUMEROUS TO WIDESPREAD SHOWERS AND
ISOLATED THUNDERSTORMS ARE SEEN ALONG THE SOUTHERN, EASTERN, AND
NORTHERN PERIPHERIES OF 99W. HEAVY RAINFALL AND GUSTY WINDS ARE
EXPECTED ACROSS MUCH OF PALAU AND WESTERN YAP STATE, INCLUDING YAP
PROPER THIS WEEK.
AS INVEST 99W LIFTS NORTHWARD THIS WEEK, THE DEVELOPING MONSOON TAIL
WILL CONTINUE TO INTENSIFY ON THE SOUTH SIDE. WESTERLY TO
SOUTHWESTERLY WINDS OF 20 TO 30 KT WITH GUSTS PEAKING NEAR 40 KT ARE
EXPECTED ALONG WITH SEAS HAZARDOUS TO SMALL CRAFT AND HAZARDOUS
SURF. A LARGE BAND OF HEAVY SHOWERS ARE CLOSING IN ACROSS PALAU FROM
THE SOUTH, ALONG A SURGE IN MONSOON WEST-SOUTHWESTERLIES. FOR YAP,
DEEPENING CONVECTION IS BUILDING IN ACROSS THE AREA AS INVEST 99W
GRADUALLY CONSOLIDATES NEARBY. SEAS EXPECTED TO BUILD TO OVER 10
FEET THROUGH FRIDAY MORNING. AS THE SYSTEM SHIFTS FURTHER NORTH-
NORTHWEST, THE MONSOON TAIL MAY TRANSITION INTO AN INFLOW TAIL WITH
SOUTHERLY FLOW. THIS WILL BRING HAZARDOUS SEA AND SURF CONDITIONS TO
YAP AND PALAU'S COASTAL WATERS THROUGH LATE THIS WEEK.
CRUZ
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