Trade winds will remain light to moderate through much of the week as the remnant circulation of Tropical Cyclone Genevieve lingers far NE of the islands. Clouds and showers will favor windward and mauka areas and may be a little more frequent for the western half of the state this week due to an upper level trough. Trade winds then look to increase this weekend.
A weakening high pressure ridge far north of the state will keep moderate trade winds in the forecast. A passing low level trough passing from east to west across the Hawaii Region will bring enhanced clouds and shower coverage across the state through Tuesday. Periods of MVFR conditions are expected through the morning hours, favoring northern and eastern windward mountain slopes of all islands.
AIRMET Sierra in effect for mountain obscuration above 020 for north through southeast mountains of Kauai, Oahu, Molokai, Maui and the Big Island. These conditions will continue well into the morning hours.
No significant changes to the forecast this evening. Winds will remain below Small Craft Advisory levels for the next several days.
High pressure north of the islands will maintain trade winds. However, a front passing from west to east north of the islands will help to weaken the trade wind flow, as will the remnants of former Tropical Cyclone Genevieve lifting north to the east of the islands. As the front moves to the east, and the tropical remnants lift north and dissipate, trade winds should restrengthen by the end of the week.
Background south swell will maintain surf below seasonal averages for the south shores through much of the the week. A small, long period south swell is expected to arrive by Saturday. A series of south swells are expected next week, which should produce surf heights at or above seasonal averages.
East facing shores will remain rough and choppy, but will decrease as the trade winds ease through much of the week. Small, medium period easterly swell generated from former Tropical Cyclone Genevieve will linger through mid-week.
Surf along north facing and west shores will remain flat to tiny through the forecast period except for areas exposed to the easterly trade wrap.
None.
