Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
820 AM EDT Mon Apr 09 2018

Valid 00Z Tue Apr 10 2018 - 00Z Tue Apr 17 2018

A powerful cold front is moving through the state today that may
produce additional heavy rains today and Tuesday. The associated
amplified upper trough over the east central Pacific will sweep
toward the West Coast of the United States during this time. As a
result, the elevated narrow plume of precipitable water values and
frontal zone will subside and blend in with more traditional
westerlies for midweek and potentially into late work
week/upcoming weekend.

Another short wave trough departing east Asia today, will slide
across the Pacific and amplify but remain progressive. The
associated cold front will attempt to reach the Hawaiian Islands
but it appears at the moment only isolated to scattered showers is
anticipated. Tail end of upper dynamics from this large scale
feature will dive south and begin to help close and cut-off a mid
to upper low. The global models tentatively close off this system
west of the islands along with the elevated plume. So despite the
continuous wet regime this winter, it does appear it quiets down
this week and hopefully through the upcoming weekend.

Musher