755
FXHW01 KWNH 050742
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
342 AM EDT SAT SEP 5 2026
VALID 00Z SUN 06 SEP 2026 - 00Z SUN 13 SEP 2026
AN ACTIVE TROPICAL PATTERN ACROSS THE CENTRAL TO EASTERN PACIFIC
BETWEEN LOWELL PASSING TO THE SOUTH AND THEN WEST OF THE ISLANDS
AND KARINA PASSING TO THE NORTHEAST OF THE ISLANDS, WILL KEEP
TRADES DISRUPTED ACROSS THE ISLANDS INTO AT LEAST THE MID PART OF
THE UPCOMING WEEK. SEE THE LATEST NHC ADVISORIES FOR OFFICIAL
TROPICAL WATCHES AND WARNINGS ON BOTH LOWELL AND KARINA. THE TRACK
OF LOWELL SHOULD RESULT IN A NORTHWARD TRANSPORT OF ANOMALOUS PW
VALUES, 2 TO 4 STANDARD DEVIATIONS ABOVE THE MEAN, ACROSS ALL OF
THE STATE BEGINNING SUNDAY NIGHT AND CONTINUING INTO WEDNESDAY
AFTERNOON. THIS WILL SUPPORT POTENTIAL FOR HEAVY RAINS ACROSS ALL
OF THE ISLANDS. RAINFALL TOTALS OF 3 TO 6 INCHES WITH MAXIMUM
AMOUNTS OF 10+ INCHES POSSIBLE FOR KAUAI AND THE BIG ISLAND.
RAINFALL OF 2 TO 4 INCHES WITH MAXIMUM AMOUNTS OF 8"+ POSSIBLE FOR
MAUI, WITH RAINFALL TOTALS OF 1 TO 2 INCHES AND MAXIMUM AMOUNTS
OF 4" ACROSS THE REMAINDER OF THE ISLANDS. THIS RAINFALL MAY
PRODUCE FLASH FLOODING AND MUDSLIDES, ESPECIALLY IN AREAS OF
STEEP TERRAIN. A MORE NORMAL TRADE PATTERN SHOULD RE-ESTABLISH
ACROSS THE ISLAND THURSDAY AND FRIDAY. HOWEVER, BROAD LOW PRESSURE
TO THE SOUTH OF THE ISLANDS MAY AGAIN DISRUPT THE TRADES HEADING
INTO NEXT WEEKEND.
ORAVEC
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