237
FXHW01 KWNH 240723
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
323 AM EDT FRI JUL 24 2026
VALID 00Z SAT 25 JUL 2026 - 00Z SAT 01 AUG 2026
..FAUSTO TO TRACK NEAR THE ISLANDS BY MIDWEEK
LATEST GUIDANCE SOLUTIONS REMAIN REASONABLY WELL CLUSTERED INTO
EARLY NEXT WEEK AND A COMPOSITE BLEND SEEMS TO OFFER A SOLID
FORECAST BASIS WITH GOOD OVERALL PREDICTABILITY.
THE WEATHER PATTERN FOR THE STATE INTO MONDAY WILL BE DOMINATED
BY THE INFLUENCE OF STRONG HIGH PRESSURE BRIDGING TO THE NORTH OF
THE STATE. THIS WILL SUPPORT MODERATE TO STRONG/BREEZY MEAN
ISLAND TRADES. THIS PATTERN WILL FOCUS LIMITED MOISTURE AND
RAINFALL CHANCES MAINLY INTO WINDWARD TERRAIN UNDER RIDGING ALOFT.
MEANWHILE, HURRICANE FAUSTO IS FORECAST BY THE NATIONAL HURRICANE
CENTER TO TRACK STEADILY WEST-NORTHWEST FROM THE TROPICAL EASTERN
PACIFIC, GRADUALLY WEAKENING TO A TROPICAL STORM UPON PASSING
JUST NORTH OF THE STATE NEXT TUE-WED. THE CURRENT TRACK WOULD
INTERRUPT THE AFOREMENTIONED WEATHER PATTERN FOR THE ISLANDS, AS
FAUSTO OFFERS A MAJOR MARITIME THREAT TO MONITOR ALONG WITH
POTENTIAL IMPACTS WITH POSSIBLE CLOSE ISLAND PROXIMITY. THE LATEST
GLOBAL GUIDANCE SHOWS A RAPID UPTICK IN PWAT TUE-WED ACROSS THE
ISLANDS NEXT TUE-WED (2.00-2.25"), WITH THE ENSUING S-SE FLOW
GIVEN THE CURRENT NHC FORECAST TRACK OF FAUSTO. EXPECT THE
POTENTIAL FOR HEAVY RAINFALL, ESPECIALLY ALONG SOUTHERN SLOPES
GIVEN THE SOUTHERLY LOW-LEVEL WIND COMPONENT, THOUGH THE GOOD NEWS
IS FAUSTO IS EXPECTED TO PROGRESS FAIRLY SWIFTLY WNW, MOVING WEST
OF THE ISLANDS BY THURSDAY.
HURLEY
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