614
FXHW01 KWNH 120849
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
349 AM EST MON JAN 12 2026
VALID 00Z TUE 13 JAN 2026 - 00Z TUE 20 JAN 2026
AN ACTIVE 5 TO 7 DAYS IS IN STORE ACROSS MOST OF THE HAWAIIAN
ISLANDS AS A SERIES OF COLD FRONTS APPROACHES...AND OCCASIONALLY
CROSSES...THE CHAIN. THERE SHOULD BE MODERATE TO OCCASIONALLY
HEAVY SHOWERS ACCOMPANYING EACH FRONT (TODAY...AGAIN WEDNESDAY
INTO THURSDAY AND EARLY IN THE UPCOMING WEEKEND) WITH FAIRLY BRIEF
DRY INTERVALS BETWEEN FRONTAL PASSAGES. THE SURFACE AND LOW-LEVEL
PRESSURE PATTERN LOOKS TO SUPPORT BREEZY TO WINDY CONDITIONS AHEAD
OF THE MID-WEEK FRONT.
MODEL AGREEMENT CONTINUED TO BE AVERAGE TO ABOVE AVERAGE THROUGH
16/00Z...WITH INCREASING SPREAD IN PLACEMENT AND TIMING OF MASS
FIELDS. ONE AREA OF IMPROVEMENT IN MODEL AGREEMENT WAS THE
DEVELOPMENT OF SURFACE LOW PRESSURE ALONG BOUNDARY NEAR 150W BY
THE GFS LATE THURSDAY. THAT SHOULD RESULT IN A BLEND OF THE ECMWF
AND GFS BEING A REASONABLE STARTING POINT.
BANN
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