503
FXHW01 KWNH 250705
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
305 AM EDT MON MAY 25 2026
VALID 00Z TUE 26 MAY 2026 - 00Z TUE 02 JUN 2026
SURFACE HIGH PRESSURE CENTERED NORTHEAST OF THE ISLANDS NEAR 41N
148W WILL WEAKEN BY MID WEEK, WITH A NEW DOMINANT NORTH PACIFIC
HIGH THEN PUSHING EASTWARD ALONG APPROXIMATELY 40N FROM THE
DATELINE LATE TUESDAY TO 160W BY SAT. THIS SURFACE HIGH WILL
MAINTAIN STRONG TRADES THROUGH THE REMAINDER OF THE WEEK. THE
SURFACE HIGH IS EXPECTED TO WEAKEN OVER THE UPCOMING WEEKEND, WITH
A CORRESPONDING LESSENING OF THE CURRENT STRONG TRADES. THESE
WEAKER TRADES WILL CONTINUE THEN INTO THE EARLY PART OF NEXT WEEK.
PW VALUES ARE EXPECTED TO REMAIN BELOW SEASONAL AVERAGES THROUGH
THE REMAINDER OF THE WEEK. CONSENSUS IS FOR THEN AN INCREASE FROM
EAST TO WEST IN PW VALUES OVER THE WEEKEND INTO EARLY NEXT WEEK.
THIS MAY LEAD TO HEAVIER TRADES SHOWERS BY EARLY NEXT WEEK. PRIOR
TO THIS, CLIMATOLOGICAL PRECIP DISTRIBUTION EXPECTED ACROSS THE
ISLANDS WITH POPS RANGING FROM 30-60% OVER WINDWARD AND MAUKA
LOCATIONS AND GENERALLY LESS THAN 15% ACROSS LEEWARD AREAS.
ORAVEC
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