932
FXHW01 KWNH 230845
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
445 AM EDT SUN AUG 23 2026
VALID 00Z MON 24 AUG 2026 - 00Z MON 31 AUG 2026
OVERALL, NOT MUCH CHANGE FROM THE PREVIOUS FORECAST AS TROPICAL
STORM MOKE WILL CONTINUE ITS TRACK WEST-NORTHWEST ACROSS THE
CENTRAL PACIFIC TODAY AND MONDAY. WINDS ARE EXPECTED TO BECOME
EASTERLY AND STRENGTHEN TODAY WITH SURFACE HIGH PRESSURE NORTH OF
THE ISLAND CHAIN AND MOKE PASSING SOUTH OF THE ISLANDS. A DEEP
PLUME OF MOISTURE POSITIONED NORTH OF MOKE WILL FUEL HEAVY
RAINFALL, ESPECIALLY OVER THE EASTERN ISLANDS, WITH MULTIPLE
INCHES OF RAINFALL LIKELY ACROSS PORTIONS OF THE BIG ISLAND. WITH
THESE RAINS COMING QUICKLY ON THE HEELS OF LALA, LIFE-THREATENING
FLOODING AND MUDSLIDES ARE A SIGNIFICANT CONCERN. EVEN AS THE
SYSTEM CONTINUES WEST AND WEAKENS, GUIDANCE SHOWS AN ELONGATED
STRETCH OF DEEPER MOISTURE REMAINING ACROSS THE ISLANDS,
POTENTIALLY CARRYING THE THREAT FOR HEAVY RAINFALL WELL INTO EARLY
NEXT WEEK.
THEN A RETURN TO MORE TYPICAL EASTERLY TRADES IS EXPECTED, WITH
NOTABLY DRIER AIR SPREADING ACROSS THE ISLANDS BY MIDWEEK.
BANN
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