409
FXHW01 KWNH 110714
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
314 AM EDT THU MAY 11 2023
VALID 00Z FRI MAY 12 2023 - 00Z FRI MAY 19 2023
A COL IS DEVELOPING IN THE SUBTROPICAL NORTH OF THE STATE, IN
RESPONSE TO A TRAILING SURFACE TROUGH/FRONT FROM A STRONG LOW
PRESSURE SYSTEM OVER THE SOUTHERN GULF OF ALASKA GOING THROUGH THE
END OF THIS WEEK. THIS WILL LIKELY PERSIST GOING THROUGH SATURDAY
AS WELL WITH THE FRONT LIKELY REACHING THE BIG ISLAND, BUT IT
SHOULD NOT HAVE ANY MAJOR EFFECTS IN TERMS OF INCREASED RAINFALL.
THE ENSEMBLE MEANS SUGGEST THE HIGH SHOULD BUILD BACK IN NORTH OF
THE STATE BY NEXT SUNDAY AND EARLY NEXT WEEK, AND A LINGERING
SURFACE LOW WELL NORTHEAST OF THE STATE.
IN TERMS OF SENSIBLE WEATHER, LIGHTER AND MORE VARIABLE WINDS ARE
EXPECTED OVER THE NEXT FEW DAYS IN RESPONSE TO THE COL DEVELOPING
TO THE NORTH OF THE STATE. THE PASSAGE OF THE COLD FRONT WILL
HERALD A CHANGE TO INCREASING NORTHEASTERLY FLOW BEHIND IT AND
LOWER DEWPOINTS FOR THE CENTRAL AND WESTERN ISLANDS, AND THEN
VEERING MORE TO THE EAST. OTHER THAN SOME HEAVIER SHOWERS ON THE
BIG ISLAND EARLY NEXT WEEK, NO MAJOR AREAS OF ORGANIZED HEAVY
RAINFALL APPEAR LIKELY OVER THE NEXT SEVEN DAYS AS THE DEEPEST
TROPICAL MOISTURE GENERALLY STAYS WELL SOUTH OF THE ISLANDS.
HAMRICK
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