Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
248 AM EST Sat Jan 13 2024

Valid 00Z Sun Jan 14 2024 - 00Z Sun Jan 21 2024

A dry and relatively cool post-frontal airmass is in place across
Hawaii, with northwesterly winds behind the front and some showers
in place due to instability underneath an upper low. Little to no
precipitation is forecast for the rest of the weekend though as
the upper low northeast of the state pulls farther away. Winds are
forecast to weaken Saturday and be rather light Sunday with high
pressure overhead. A front may stall to the north of the state
around Monday, leading winds to shift to more southwesterly ahead
of it. But then there is rather good model agreement for the
medium range period for another cold front to come across Hawaii
around Tuesday-Wednesday with rain expected along and ahead of the
front. Gusty northwesterly winds may be possible again behind the
front, before weakening under high pressure into late next week.
Another axis of moisture ahead of yet another front may reach the
northwestern islands by late week. Remarkably, over the next week,
no days of typical easterly trades are expected, as the jet stream
aloft meandering near/over the state displaces the trades well to
the south.

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