998
FXHW01 KWNH 280759
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
359 AM EDT SUN JUN 28 2026
VALID 00Z MON 29 JUN 2026 - 00Z MON 06 JUL 2026
THE LATEST MODEL SUITE REMAINS CONSISTENT IN SHOWING SURFACE HIGH
PRESSURE REMAINING CENTERED TO THE NORTHEAST OF THE ISLANDS
THROUGH THE UPCOMING FORECAST PERIOD. THERE IS NOT EXPECTED TO BE ANY
SIGNIFICANT CHANGES TO THE TRADE WIND PATTERN ON THE SOUTH AND
SOUTHWEST SIDE OF THIS HIGH ACROSS THE ISLANDS, WITH MODERATE
TRADES EXPECTED THROUGH THE FORECAST PERIOD. PW VALUES WILL
INITIALLY BE BELOW AVERAGE THROUGH THE WEEKEND AND INTO EARLY NEXT
WEEK. BOTH THE GFS AND EC THEN SHOW PW VALUES INCREASING TUE AND
REMAINING ANOMALOUS...2 TO 3+ STANDARD DEVIATIONS ABOVE THE
MEAN...THROUGH THE REMAINDER OF NEXT WEEK. THROUGH THE FORECAST
PERIOD, CLIMATOLOGICAL TRADE WIND PRECIPITATION DISTRIBUTION
EXPECTED EACH DAY. WITH INCREASING PW VALUES, PRECIP VALUES WILL
LIKELY INCREASE IN THE FAVORED WINDWARD LOCATIONS FROM PREVIOUS
DAYS, WITH LOCALLY HEAVY 7 DAY TOTALS IN THE FAVORED UPSLOPE
REGIONS LIKELY.
ORAVEC
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page