973
FXHW01 KWNH 110845
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
445 AM EDT THU JUN 11 2026
VALID 00Z FRI 12 JUN 2026 - 00Z FRI 19 JUN 2026
EARLY IN THE PERIOD, GLOBAL GUIDANCE SHOWS AN UPPER-LEVEL TROUGH
CENTERED WELL NORTH OF THE ISLANDS WITH AN ASSOCIATED COLD FRONT
POSITIONED TO THE NORTHWEST. THE REGIONAL PRESSURE GRADIENT WILL
BE WEAK ACROSS THE STATE AS SURFACE HIGH PRESSURE IS SHUNTED WELL
OFF TO THE NORTHEAST. THE FRONT IS EXPECTED TO STALL AND
DISSIPATE WELL NORTHWEST OF THE ISLANDS AND BY EARLY NEXT WEEK
HIGH PRESSURE IS FORECAST TO BUILD BACK IN NORTH OF THE ISLANDS,
BRINGING A RETURN TO MORE TYPICAL EASTERLY TRADE WINDS.
A RETURN OF DEEPER MOISTURE IS EXPECTED ACROSS THE STATE LATE
SUNDAY INTO MONDAY, WITH POSITIVE PRECIPITABLE WATER ANOMALIES
LARGELY PERSISTING THROUGH THE REMAINDER OF THE EXTENDED PERIOD.
THIS INCOMING MOISTURE WILL BECOME INCREASINGLY FOCUSED ALONG
WINDWARD SLOPES AND MAUKA AREAS AS THE TRADE WINDS INVERSION RE-
ESTABLISHES ITSELF UNDER THE BUILDING HIGH PRESSURE.
PEREIRA
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