710
FXHW01 KWNH 040817
PMDHI
HAWAII EXTENDED FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
417 AM EDT FRI SEP 4 2026
VALID 00Z SAT 05 SEP 2026 - 00Z SAT 12 SEP 2026
AN ACTIVE TROPICAL PATTERN ACROSS THE CENTRAL TO EASTERN PACIFIC
BETWEEN LOWELL PASSING TO THE SOUTH AND THEN WEST OF MUCH OF THE
ISLANDS AND KARINA PASSING TO THE NORTHEAST OF THE ISLANDS, WILL
KEEP TRADES DISRUPTED ACROSS THE ISLANDS FOR MUCH OF THE UPCOMING
FORECAST PERIOD. 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. WHILE THE CURRENT OFFICIAL NHC TRACK WOULD FAVOR THE
HEAVIEST RAINS FOR THE WESTERN ISLAND, KAUAI TO OAHU, THE
ANOMALOUS PW AXIS OVER THE REMAINDER OF THE ISLANDS WILL SUPPORT
LOCALLY HEAVY RAIN POTENTIAL, EVEN AS LOWELL PASSES WELL TO THE
NORTHWEST OF THE ISLANDS. A MORE NORMAL TRADE PATTERN SHOULD RE-
ESTABLISH ACROSS THE ISLAND LATE IN THE UPCOMING WEEK, THURSDAY
AND BEYOND, AS SURFACE HIGH PRESSURE TO THE NORTHEAST OF THE
ISLANDS ALONG 145-150W BECOMES THE PRIMARY SURFACE FEATURE ACROSS
THE EASTERN PACIFIC.
ORAVEC
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page