Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
347 AM EDT Thu Sep 30 2021

Valid 00Z Fri Oct 01 2021 - 00Z Fri Oct 08 2021

Rounds of surface high pressure systems tracking well north of
Hawaii should lead to moderate to breezy easterly trade winds
through much of the week. Meanwhile in the upper levels, the state
should be generally underneath lower heights through the first
half of next week, and an upper low is forecast to form just to
the north of the islands this weekend. The weaknesses in the upper
flow should allow for some periods of increased available moisture
approaching from the south and support for showers. The first
round of showers is likely today (Thursday) particularly over
windward areas of the Big Island, and Friday evening into Saturday
could be another period of enhanced moisture. Islands farther west
could also see showers developing over the weekend as the upper
low provides support. Into next week, timing and placement of
additional showers is more uncertain, but overall it appears that
early in the workweek could see drier conditions, with moisture
increasing once again around midweek onward.

See the Honolulu Forecast Office and links they provide for
information about the Kilauea Volcano.

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