Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
348 AM EDT Fri Apr 17 2020

Valid 00Z Sat Apr 18 2020 - 00Z Sat Apr 25 2020

Guidance agrees that the pattern during the next week should
support only light shower activity, with varying degrees of upper
ridging over the region and precipitable water values tending to
be around or somewhat below climatological values.  Surface high
pressure north of the state will support moderate trades late this
week into the weekend.  Eastward progression of this high will
lead to a lighter trend for low level winds by late weekend into
next week, with corresponding potential for more land/sea breeze
focus for showers.  Meanwhile a front approaching from the
northwest will likely stall northwest of the main islands but
still be close enough to help disrupt the trades.  Most guidance
expects the front to retreat for a time around midweek and then
drift back to the southeast late in the week due to upstream
dynamics aloft.  There is a little spread for frontal position by
next Fri but good consensus that associated moisture should remain
northwest of the main islands. 

Rausch