760
FXHW01 KWNH 270815
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
315 AM EST FRI FEB 27 2026
VALID 00Z SAT 28 FEB 2026 - 00Z SAT 07 MAR 2026
THE PERIOD BEGINS WITH A WEAK, ELONGATED UPPER-LEVEL SHORTWAVE AND
CORRESPONDING SURFACE FRONT POSITIONED WEST OF THE ISLANDS. THE
BOUNDARY AND ITS ASSOCIATED BAND OF DEEPER MOISTURE ARE FORECAST
TO EDGE SLOWLY EASTWARD WHILE GRADUALLY WEAKENING THROUGH THE
UPCOMING WEEKEND. AHEAD OF THIS FEATURE, WEAK LOW-LEVEL FLOW WILL
PERSIST, POTENTIALLY ALLOWING FOR LOCALIZED LAND AND SEA BREEZE
CIRCULATIONS TO DOMINATE SENSIBLE WEATHER.
BY MONDAY, ANOTHER WEAK SHORTWAVE IS EXPECTED TO MOVE ACROSS THE
STATE, ACCOMPANIED BY A SURGE OF DEEPER MOISTURE. THIS WAVE WILL
LIKELY LINGER AND WEAKEN OVER THE ISLAND CHAIN THROUGH TUESDAY.
MODEL GUIDANCE SUGGESTS A TRANSITION BY WEDNESDAY AS SURFACE HIGH
PRESSURE BUILDS TO THE NORTHEAST, SUPPORTING A TIGHTENING PRESSURE
GRADIENT AND THE RETURN OF AMPLIFYING TRADE WINDS. THESE BREEZY
CONDITIONS ARE EXPECTED TO PERSIST THROUGH THE LATTER HALF OF THE
WEEK, FOCUSING LIGHT PASSING SHOWERS PRIMARILY ALONG WINDWARD AND
MAUKA AREAS WHILE KEEPING LEEWARD AREAS MOSTLY DRY UNDER A MORE
STABLE AIRMASS.
PEREIRA
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