Hawaii Extended Forecast Discussion
NWS Weather Prediction Center College Park MD
812 AM EDT Mon Jun 04 2018

Valid 00Z Tue Jun 05 2018 - 00Z Tue Jun 12 2018

Hawaii will be solidly in an easterly flow regime through the next
week. Upper ridging will generally dominate the weather pattern
across the Central Pacific, but models show good consensus that a
weakness in the ridge should traverse from east to west across
Hawaii late this week into the weekend. At the surface, high
pressure will remain anchored north of Hawaii, with 10-20 kt
easterly flow at the surface through the next week. The air mass
will be moderately moist through the next week (Pwats averaging
1.0-1.4 in.), with the deepest tropical moisture remaining mostly
south of the state. As the upper-level weakness crosses the state
Fri-Sun, a brief surge of modestly deeper moisture (Pwats > 1.50
in.) may traverse the state. This would bring a slight and rather
brief increase in otherwise typical windward/leeward shower
activity before drier air once again spreads across the state
early next week.


Ryan