987
FXHW01 KWNH 110730
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
330 AM EDT MON MAY 11 2026
VALID 00Z TUE 12 MAY 2026 - 00Z TUE 19 MAY 2026
A STABLE SYNOPTIC PATTERN WILL CONTINUE TO TAKE HOLD EARLY IN THE
PERIOD AS DEEP RIDGING BECOMES ESTABLISHED NORTH OF THE ISLAND
CHAIN. THIS ROBUST HIGH PRESSURE WILL ACT AS THE PRIMARY DRIVER
FOR THE RETURN OF A TYPICAL TRADE WIND REGIME, SUPPORTED BY A
NOTABLE PRESSURE GRADIENT THAT WILL MAINTAIN EASTERLY FLOW THROUGH
THE UPCOMING WEEK. WHILE GLOBAL MODELS INDICATE A SUBTLE WEAKNESS
IN THE UPPER-LEVEL RIDGE CENTERING OVER THE STATE BY MID TO LATE
WEEK, THERE APPEARS TO BE LITTLE DISRUPTION TO THE LOW-LEVEL FLOW.
SURFACE HIGH PRESSURE IS EXPECTED TO PERSIST NORTH TO NORTHEAST
OF THE ISLANDS, ENSURING THAT MODERATE TO LOCALLY FRESH EASTERLY
WINDS CONTINUE INTO EARLY NEXT WEEK. PRECIPITATION WILL BE
CHARACTERIZED BY PASSING SHOWERS EMBEDDED IN THE TRADES AND
FOCUSED MOSTLY ALONG THE WINDWARD SLOPES AND MAUKA AREAS.
PEREIRA
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