A high pressure system will linger north of the Hawaiian Islands producing moderate to breezy trades through the middle of next week with minor fluctuations in speed. Brief pulses of enhanced showers will roll through on the trades during this time period, with showers favoring windward mountain areas in the overnight to early morning hours.
Moderate to breezy trades through the period. Low cigs and SHRA should impact windward and mauka locations with some limited spillover to leeward areas. Isol IFR to MVFR conds possible in SHRA, otherwise VFR prevails.
AIRMET Sierra is in effect for mtn obsc for portions of all islands due to cld and SHRA. Conds should improve in the mid morning hours.
AIRMET Tango is in effect for mod turb lee of terrain. Expect this continue for a few days.
High pressure north of the islands maintains fresh to strong trades well into next week. The Small Craft Advisory remains in effect for the typically windy waters around Maui County and the Big Island.
A medium-period NNW swell peaks tonight in maintenance of seasonable surf along N shorelines. This swell has been slow to arrive with NDBC 51001 buoy still observing short period swell in the 5 to 6 foot range. This swell will slowly decline and shift to the N during weekend as a smaller overlapping NW swell moves through the area. Both swells lower on Monday and fade on Tuesday. Another small NW swell is possible next Thursday or Friday.
S shore surf remains seasonable as long period swell peaks this evening then gradually declines this weekend. Surf along S shores then holds below average through next week.
Surf along E shores increases this weekend as trades strengthen. In addition, expect some wrap of NNW swell for exposed shorelines through at least Saturday. Rough trade wind swell will produce above average surf for E shores through Tuesday before declining with weakening trades mid-week.
Small Craft Advisory until 6 AM HST Monday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
