665
FXHW01 KWNH 280743
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
342 AM EDT FRI APR 28 2023
VALID 00Z SAT APR 29 2023 - 00Z SAT MAY 06 2023
A FAVORED COMPOSITE OF WELL CLUSTERED MODEL GUIDANCE HAS BROAD
ENSEMBLE SUPPORT OVERALL IN A PATTERN WITH AVERAGE TO ABOVE
AVERAGE PREDICTABILITY. RECENT PASSAGE OF AN AMPLIFIED/CLOSED
MID-LATITUDE SYSTEM TO THE NORTHEAST OF THE STATE PUSHED A
TRAILING FRONT ALONG WITH INCREASED RAINS OVER THE ISLANDS THIS
WEEK. THE WEAKENED AND STALLING BOUNDARY AND LOCAL LAND/SEA
BOUNDARIES SHOULD ACT TO CONTINUE TO POOL DEEPER MOISTURE TO FUEL
SOME DAILY LOCAL DOWNPOURS THIS WEEKEND PARTICULARLY FOR THE BIG
ISLAND/MAUI. THIS PATTERN SHOULD SLOWLY TRANSITION NEXT WEEK TO
USHER IN A RETURN PERIOD OF MODERATE TRADES AS HIGH PRESSURE
BRIDGES TO THE NORTH THEN NORTHEAST OF THE STATE AND THE FRONTAL
BOUNDARY DISSIPATES. SOUTHEASTWARD DIGGING OF UPPER-LEVEL TROUGH
ENERGY FROM THE WEST-CENTRAL PACIFIC MID-LATITUDES NEXT WEEK IS
FORECAST TO OCCUR TO THE WEST WITH SUBSEQUENT HIGHER PRECIPITATION
CHANCES NEARBY BUT NOT OVER THE ISLANDS
PUTNAM/SCHICHTEL
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