Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
346 AM EDT Fri Jun 10 2022

Valid 00Z Sat Jun 11 2022 - 00Z Sat Jun 18 2022

Expect trades to increase from late this week into the weekend as
eastern Pacific high pressure strengthens slightly while it
retrogrades along 30N latitude, reaching a position north of the
state by early Monday.  Then an approaching central Pacific high
will take over, supporting continuation of moderate to brisk
trades into late next week.  Windward-focused showers will tend to
be of light to moderate intensity with precipitable water values
holding below climatology through early next week.  Periodic
enhancement will be possible as upper level impulses track from
east to west beneath upper ridging.  Guidance shows a couple of
such impulses late this week and during the weekend, followed by a
stronger one around Wednesday-Thursday.  An area of greater deep
moisture, originally associated with a front to the
north/northeast of the state, may cross the region with this
latter impulse.  There is still spread among the models/means for
the details of the upper impulse and magnitude of moisture
increase but there is general agreement that the greatest moisture
should cross the northwestern islands.

Rausch