895
FXHW60 PHFO 081357
AFDHFO
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
357 AM HST WED JUL 8 2026
SYNOPSIS
STRONG HIGH PRESSURE FAR NORTH OF THE STATE WILL CONTINUE TO
PRODUCE BREEZY TO WINDY TRADES INTO THE WEEKEND. SHOWERS WILL
PRIMARILY FOCUS ALONG WINDWARD AND MAUKA AREAS. AN INCREASE IN
SHOWER COVERAGE AND FREQUENCY IS ANTICIPATED LATER THIS WEEK AND
INTO THE WEEKEND, WITH HIGHER RAIN ACCUMULATIONS LIKELY OCCURRING
DURING THE OVERNIGHT HOURS.
DISCUSSION
CURRENT RADAR AND SATELLITE IMAGERY SHOWS SCATTERED SHOWERS
MOVING INTO WINDWARD AND MAUKA AREAS ON THE TRADE WIND FLOW THIS
MORNING. STRONG HIGH PRESSURE CENTERED FAR NORTH OF THE STATE
WILL CONTINUE TO DRIVE BREEZY TO WINDY TRADES ACROSS THE REGION
THROUGH THE WEEKEND. LOOKING ALOFT, HAWAII WILL REMAIN UNDER WEAK
RIDGING THROUGH EARLY NEXT WEEK AS IT LIES BETWEEN TWO UPPER-
LEVEL LOWS, ONE TO THE EAST, THE OTHER TO THE WEST.
THE BREEZY TO WINDY TRADES WILL GENERALLY FOCUS CLOUDS AND
SHOWERS OVER WINDWARD AND MAUKA AREAS THROUGHOUT THE PERIOD.
HOWEVER, BATCHES OF DEEP TROPICAL MOISTURE WILL MOVE ACROSS THE
AREA TONIGHT THROUGH FRIDAY NIGHT, AGAIN SUNDAY INTO MONDAY, AND
MORE WILL FOLLOW NEXT WEEK. AS THESE BATCHES OF DEEPER MOISTURE
MOVE THROUGH WITH PWATS REACHING 1.5 TO 2 INCHES, THE INVERSION
WILL WEAKEN AND LIFT, INCREASING SHOWER COVERAGE AND FREQUENCY
ACROSS THE STATE. IN ADDITION TO THE POTENTIAL FOR AN UPTICK IN
SHOWER ACTIVITY, DEW POINTS WILL BE ON THE RISE, LEADING TO
MUGGIER CONDITIONS THROUGH THE WEEKEND.
AVIATION
BREEZY TO LOCALLY TRADES WILL CONTINUE TODAY AND ONCE AGAIN BRING
LOW CLOUDS AND SCATTERED SHOWERS PREDOMINATELY TO WINDWARD AND
MOUNTAIN AREAS. THERE WILL ALSO BE ISOLATED SPILLOVER INTO LEEWARD
SITES. VFR WILL PREVAIL FOR MOST SITES, WITH OCCASIONAL LOCALIZED
MVFR MAINLY FOR WINDWARD/MOUNTAIN SITES ASSOCIATED WITH THE SHOWER
ACTIVITY.
AIRMET TANGO REMAINS IN EFFECT FOR MODERATE LOW LEVEL TURBULENCE
OVER AND DOWNWIND OF TERRAIN FOR ALL ISLANDS. THIS AIRMET WILL
LIKELY CONTINUE THROUGH THE NEXT SEVERAL DAYS.
AIRMET SIERRA REMAINS IN EFFECT FOR TEMPO MOUNTAIN OBSCURATION
ABOVE 2500 FT FOR NORTH THROUGH EAST SECTIONS OF THE BIG ISLAND.
SIERRA MAY BE DROPPED BY LATER THIS MORNING AS CLOUDS AND SHOWERS
BECOME LESS WIDESPREAD.
MARINE
STRONG HIGH PRESSURE REMAINS CENTERED NORTH OF THE STATE, WHICH
IS DRIVING FRESH TO STRONG TRADE WINDS ACROSS ALL COASTAL WATERS.
NO ASCAT PASS AVAILABLE OVERNIGHT, BUT HI-RESOLUTION GUIDANCE
KEEPS SMALL CRAFT ADVISORY (SCA) WINDS IN MANY OF THE COASTAL
WATER ZONES THOUGH TONIGHT, SO WILL BE EXTENDING THE CURRENT SCA
THROUGH THEN. VERY LITTLE CHANCE IS EXPECTED TO THE STRENGTH OF
THE HIGH OR THE PRESSURE GRADIENT ACROSS THE ISLANDS, SO WILL
CONTINUE TO REMAIN AROUND THE ADVISORY THRESHOLD FOR MOST WATERS
OVER THE COMING DAYS. WINDY ZONES AROUND BIG ISLAND AND MAUI
COUNTY WILL LIKELY BE EXTENDED BEYOND TONIGHT AT A MINIMUM FOR THE
SCA, WITH THE POSSIBILITY OF MORE ZONES.
A MODERATE, MEDIUM PERIOD SOUTH SOUTHWEST (190-200 DEGREES) SWELL
CONTINUES TO GENERATE MODERATE SURF BELOW ADVISORY CRITERIA ALONG
SOUTH FACING SHORES. THIS SWELL ENERGY WILL GRADUALLY LOWER
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 DEGREES) IS EXPECTED TO FILL IN SATURDAY NIGHT, BUT DUE TO
THE DIRECTION OF THE SOURCE, COULD BE MORE INCONSISTENT THAN THE
CURRENT SWELL.
SURF ALONG EAST FACING SHORES WILL REMAIN ROUGH AND CHOPPY
THROUGH THE WEEK AS FRESH TO STRONG TRADES HOLD. A SMALL, MODERATE
PERIOD WEST (280 DEGREES) SWELL IS EXPECTED TO ARRIVE THIS WEEKEND
AND LINGER INTO EARLY NEXT WEEK. NO SIGNIFICANT SWELLS ARE
EXPECTED OUT OF THE NORTH OR NORTHWEST.
LOOKING AHEAD, HIGHER THAN NORMAL HIGH TIDES WILL BE POSSIBLE
BEGINNING DURING THE SECOND HALF OF THIS WEEKEND. INTERESTS
IMMEDIATELY ALONG THE COASTS IN LOW-LYING OR VULNERABLE AREAS
SHOULD CONTINUE TO MONITOR FORECASTS FOR POSSIBLE COASTAL FLOODING
DUE TO THE KING TIDES FROM SUNDAY THROUGH THE FIRST HALF OF NEXT
WEEK.
HFO WATCHES/WARNINGS/ADVISORIES
SMALL CRAFT ADVISORY UNTIL 6 AM HST THURSDAY FOR ALL HAWAIIAN
WATERS-
DISCUSSION...WALSH
AVIATION...THOMAS
MARINE...FOSTER
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