Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
740 AM EDT Thu Aug 23 2018

Valid 00Z Fri Aug 24 2018 - 00Z Fri Aug 31 2018

...Hurricane Lane will pass very near the Hawaiian islands today
with significant impacts...

...Heavy rain still possible through the weekend into early next
week...

Major hurricane Lane was located south of the island chain as of
early Thursday and will continue its northwestward movement before
turning westward late Friday near 20N. The outer rainbands were
already moving across the southeastern islands and will continue
to rotate around the center over the next couple of days. Heavy
rain and strong winds are likely over much of the region. Please
see the latest advisory information from the Central Pacific
Hurricane Center.

For the weekend into next week, the weakening cyclone will push
westward but its moisture source from the ITCZ will be pulled
across the islands on its east side with SE flow which will keep
precipitable water values high through at least the first half of
next week. Though coverage of heavy rainfall may be less than with
the hurricane itself, the threat will remain for much of the
period. Models/ensembles indicate an upper high will build into
the region by late Wednesday into next Thursday which will help
tamper the rain chances as trades become ENE again.


Fracasso