Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
150 AM EDT Tue Apr 19 2022

Valid 00Z Wed Apr 20 2022 - 00Z Wed Apr 27 2022

A col within the upper level subtropical ridge will be in place
across Hawaii through most of the week, and then the ridge builds
in from the east over the weekend based on the latest ensemble
means.  At the surface, a high will slide eastward between 30-35
degrees north, and thus maintain steady trades from the
east-northeast to the east-southeast for much of the forecast
period.  An upper level and inverted surface trough may approach
the far northwestern Islands by early next weekend, by the latest
model guidance suggests it should not make much eastward progress.


In terms of precipitation, improving weather can be expected
compared to this past weekend, with mainly terrain enhanced
showers for the typical eastern locations on the Big Island and
Maui, and lighter showers across the northwestern Islands.  No
major events are appearing on the horizon for the upcoming week,
with the effects of the trough to the northwest keeping
significant impacts well away from the state.


Hamrick