382
FXHW01 KWNH 190613
PMDHI

Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
213 AM EDT Sat Jul 19 2025

Valid 00Z Sun 20 Jul 2025 - 00Z Sun 27 Jul 2025

The main subtropical surface high over the eastern Pacific will be
positioned well north of the Islands through this weekend and into
next week, generally between 40 and 45 degrees north. The state
will be on the far southern periphery of this high, and this will
keep a general easterly low level flow in place, with some backing
to the northeast at times through the next 7 days. The ensemble
means are in good synoptic scale agreement on the overall pattern.

In terms of rainfall prospects, there may be a slight increase in
showers across the Islands through Sunday night owing to a weak
upper level trough over the region, but otherwise the normal trade
wind induced showers can be expected through the remainder of the
week with no major rainfall events expected.


Hamrick

$$