160
FXHW01 KWNH 250911
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
511 AM EDT SAT APR 25 2026
VALID 00Z SUN 26 APR 2026 - 00Z SUN 03 MAY 2026
PERSISTENCE IN THE FORECAST AS A PROLONGED TRADE WIND PATTERN WILL
MATERIALIZE THROUGH THE EXTENDED AS THE ISLAND CHAIN SETTLES ON
THE SOUTHERN BOUNDS OF A BROAD SURFACE RIDGE POSITIONED ACROSS THE
NORTHEAST PACIFIC. WINDWARD SHOWER ACTIVITY WILL ENCROACH THE
ISLANDS DUE TO PREVAILING EASTERLIES LEADING TO ISOLATED/SCATTERED
INSTANCES OF LIGHT TO MODERATE RAINFALL ACROSS THE EASTERN HALF
OF THE ISLANDS.
A SLIGHT UPTICK IN MOISTURE (PWATS INCREASING TO 1.4-1.5") IS
EXPECTED LATE SUNDAY THROUGH TUESDAY AS A WEAK SURFACE TROUGH
TRAVERSES THE ISLANDS. THIS WILL ALLOW FOR HIGHER POPS, I.E. MORE
SCATTERED (VS. ISOLATED) SHOWERS ACROSS WINDWARD SLOPES. BEHIND
THE TROUGH, MOISTURE LEVELS WILL DROP BACK TO SEASONAL NORMS
WHILE THE TRADES RE-ESTABLISH THE SECOND HALF OF NEXT WEEK.
KLEEBAUER
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