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Hawaiian Islands Synoptic Discussion and Guidance

186
FXHW60 PHFO 050134
AFDHFO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HONOLULU HI
400 PM HST SAT JUL 4 2015

.SYNOPSIS...
WINDS WILL BE LIGHT OVERNIGHT BUT TRADE WINDS WILL GRADUALLY
STRENGTHEN DURING THE FIRST HALF OF NEXT WEEK. GENERALLY DRY
WEATHER IS EXPECTED OVERNIGHT. A MORE TYPICAL WINDWARD AND MAUKA
SHOWER PATTERN IS EXPECTED NEXT WEEK.

&&

.DISCUSSION...
LIGHT TRADE WINDS ARE EXPECTED THROUGH TONIGHT THOUGH NIGHTTIME LAND
BREEZES MAY PREVAIL IN SOME PLACES. TRADE WINDS WILL SLOWLY INCREASE
DURING THE FIRST HALF OF NEXT WEEK AS HIGH PRESSURE GRADUALLY BUILDS
IN NORTH OF THE AREA.

RADAR IMAGERY SHOWS JUST A FEW SHOWERS OVER THE SOUTHEAST SLOPES OF
THE BIG ISLAND BUT THESE ARE GENERALLY LIGHT. RADAR IMAGERY IS ALSO
PICKING UP ON A BRUSH FIRE IN KUNIA. MOSTLY DRY WEATHER IS EXPECTED
OVERNIGHT WITH JUST A FEW LIGHT SHOWERS EXPECTED...MAINLY OVER
WINDWARD AND MAUKA AREAS. WITH THE EXPECTED GRADUAL INCREASE IN
TRADE
WINDS EARLY NEXT WEEK...CLOUDS AND PASSING SHOWERS WILL TEND TO
FAVOR WINDWARD AND MAUKA AREAS.

MODERATE TRADE WINDS ARE EXPECTED DURING THE MIDDLE AND LATER HALF
OF NEXT WEEK AS HIGH PRESSURE STRENGTHENS NORTH OF THE STATE. CLOUDS
AND PASSING SHOWERS WILL FAVOR WINDWARD AND MAUKA AREAS WITH THE
TRADE WINDS SUFFICIENTLY STRONG ENOUGH TO BLOW A FEW LIGHT SHOWERS
OVER THE SELECT LEEWARD AREAS AT TIMES.

THE CENTRAL PACIFIC HURRICANE CENTER IN HONOLULU AND THE NATIONAL
HURRICANE CENTER IN MIAMI ARE MONITORING A COUPLE OF AREAS OF
DISTURBED WEATHER OVER THE EAST PACIFIC. THESE AREAS WILL CONTINUE
TO BE CLOSELY MONITORED FOR ANY SIGNS OF DEVELOPMENT.

&&

.AVIATION...
TRADE WINDS ARE EXPECTED TO STRENGTHEN ACROSS THE AREA TONIGHT AND
SUNDAY AS HIGH PRESSURE BUILDS NORTH OF THE STATE. COULD SEE AN
ISOLATED SHOWER OR TWO DEVELOP LATE THIS AFTERNOON AND ALSO SUNDAY
AFTERNOON...BUT PREDOMINANTLY VFR CONDITIONS ARE EXPECTED AT THE
TERMINALS.

NO AIRMETS ARE IN EFFECT AND NONE ARE ANTICIPATED THROUGH TONIGHT.

&&

.MARINE...
TRADE WINDS WILL SLOWLY INCREASE OVER THE NEXT FEW DAYS AND
GRADUALLY STRENGTHEN TO MODERATE LEVELS BY THE MIDDLE OF NEXT
WEEK...AS HIGH PRESSURE BUILDS IN NORTH OF THE STATE. HOWEVER WINDS
AND SEAS ARE EXPECTED TO REMAIN BELOW SMALL CRAFT ADVISORY LEVELS
THROUGH WEDNESDAY...THOU SEAS WILL BUILD TOWARD THE END OF THE
FORECAST PERIOD DUE TO THE STRONGER TRADE WINDS.

A HIGH SURF ADVISORY IS IN EFFECT ALONG SOUTH FACING SHOWERS THROUGH
SUNDAY AFTERNOON. THIS SWELL WILL LOWER GRADUALLY MONDAY THROUGH
TUESDAY.
A SERIES OF SMALL TO MEDIUM SIZE SOUTH SWELLS ARE EXPECTED THROUGH
THE REMAINDER OF THE FORECAST PERIOD. A SMALL NORTHWEST SWELL IS
EXPECTED TO LINGER OVER THE WEEKEND AND ON INTO THE MIDDLE OF NEXT
WEEK. STRENGTHENING TRADE WINDS WILL CAUSE SHORT PERIOD CHOPPY SURF
TO INCREASE NEXT WEEK.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
HIGH SURF ADVISORY UNTIL 6 PM HST SUNDAY FOR NIIHAU-KAUAI
WINDWARD-KAUAI LEEWARD-OAHU SOUTH SHORE-WAIANAE COAST-MOLOKAI-
LANAI MAKAI-KAHOOLAWE-MAUI LEEWARD WEST-MAUI CENTRAL VALLEY-
WINDWARD HALEAKALA-LEEWARD HALEAKALA-KONA-SOUTH BIG ISLAND-BIG
ISLAND NORTH AND EAST-KOHALA.

&&

$$

SYNOPSIS/DISCUSSION/MARINE...BURKE
AVIATION...JELSEMA



Bulletins, Forecasts and Observations are courtesy of Honolulu National Weather Service Forecast Office