425
FXHW60 PHFO 070103
AFDHFO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
303 PM HST MON JUL 6 2026
SYNOPSIS
HIGH PRESSURE DRIVES BREEZY TRADES INTO NEXT WEEK. EXPECT SHOWERS
FOCUSED WINDWARD AND MAUKA DURING THIS TIME. AN UPTICK IN SHOWER
COVERAGE IS ANTICIPATED THURSDAY NIGHT INTO THE WEEKEND,
PARTICULARLY OVERNIGHT AND DURING THE MORNING.
DISCUSSION
UPPER AIR PATTERN BETWEEN ROUGHLY 20N AND 30N REMAINS STAGNANT AND
BLOCKY THROUGH THE PERIOD WITH UPPER RIDGING FLANKED ON EITHER SIDE
BY CLOSED LOWS. GOVERNING HIGH PRESSURE CHANGES LITTLE IN POSITION
OR INTENSITY FOR THE REMAINDER OF THE WEEK LEAVING THE ISLANDS IN A
RATHER TYPICAL BREEZY TRADE WIND PATTERN. MEDIUM RANGE GUIDANCE IS
IN STRONG AGREEMENT THAT INCREASED MOISTURE CHARACTERIZED BY PWATS
IN THE 1.5" TO 1.75" RANGE WILL BECOME ENTRAINED IN PREVAILING
TRADES LEADING TO AN UPTICK IN SHOWER COVERAGE AND INTENSITY OF
SHOWERS FROM THURSDAY NIGHT INTO THE WEEKEND AS THE INVERSION
WEAKENS AND LIFTS TO AROUND 12KFT. A NOTEWORTHY INCREASE IN HUMIDITY
AT THE SURFACE ALSO OCCURS DURING THIS TIME AS DEWPOINTS RISE INTO
THE LOW 70S. THE INCREASED MUGGINESS WILL BE SOMEWHAT OFFSET BY
CONTINUED BREEZY TRADES.
AVIATION
MODERATE TO BREEZY TRADES WILL CONTINUE FOR THE NEXT SEVERAL
DAYS. LOW CLOUDS AND SCATTERED SHOWERS WILL MOVE OVER WINDWARD AND
MOUNTAIN AREAS, WITH SOME SPILLOVER INTO LEEWARD SITES. VFR
FOR MOST SITES AT MOST TIMES, WITH OCCASIONAL LOCALIZED MVFR
MAINLY FOR WINDWARD/MAUKA SITES.
AIRMET TANGO REMAINS IN EFFECT FOR MODERATE TO OCCASIONALLY SEVERE
LOW LEVEL TURBULENCE OVER AND DOWNWIND OF TERRAIN FOR ALL ISLANDS.
THIS AIRMET WILL LIKELY CONTINUE THROUGH THE NEXT SEVERAL DAYS.
MARINE
A STRONG HIGH PRESSURE RIDGE CENTERED NORTH OF THE STATE WILL HELP
TO DRIVE FRESH TO STRONG TRADES ACROSS ALL LOCAL WATERS THROUGH
TUESDAY AFTERNOON. WINDS WILL EASE SLIGHTLY TO FRESH TO LOCALLY
STRONG BY MIDWEEK AND BEYOND. A SMALL CRAFT ADVISORY REMAINS IN
EFFECT FOR ALL WATERS THROUGH TUESDAY AFTERNOON.
A MODERATE, LONG PERIOD, SOUTH SOUTHWEST (180-190 DEGREES) SWELL
WILL CONTINUE TO GENERATE SURF ALONG SOUTH FACING SHORES JUST
BELOW ADVISORY LEVELS. THIS SWELL WILL SLOWLY FADE TUESDAY
THROUGH THE REMAINDER OF THE WEEK. EXPECT SMALL SURF FOR SOUTH
FACING SHORES LEADING INTO THIS WEEKEND WITH MAINLY BACKGROUND
ENERGY. ANOTHER MODERATE, LONG PERIOD SOUTH SOUTHWEST SWELL
(210-220 DEGREES) MAY FILL IN SUNDAY BUT DUE TO THE DIRECTION OF
THE SOURCE COULD BE MORE INCONSISTENT THAN THIS CURRENT SWELL.
SURF ALONG EAST FACING SHORES WILL REMAIN ROUGH AND CHOPPY
THROUGH THE WEEK AS FRESH TO STRONG TRADES HOLD. EXPECT FLAT TO
TINY SURF ALONG NORTH FACING SHORES THROUGH THE FORECAST PERIOD.
HFO WATCHES/WARNINGS/ADVISORIES
SMALL CRAFT ADVISORY UNTIL 6 PM HST TUESDAY FOR ALL HAWAIIAN
WATERS-
DISCUSSION...JVC
AVIATION...PARKER
MARINE...ALMANZA
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