High Surf Warning and Advisory in effect
HONOLULU (KHON2) – The diffuse boundary that was draped across the western third of the state early this morning has lifted north and trades have filled in behind it.
While not entirely discernible in the larger synoptic scale, there will be just enough of a sheared boundary on the southern tail of this boundary’s remnants to promote higher frequency of showers across a larger area from the Kauai Channel northwest.
Afternoon soundings are hanging onto a fairly deep and moist, 9-10k foot boundary layer.
A signal that, with the weak boundary not too far off in the distance, more rich mid level moisture streaming in on better established trade flow will likely focus on Kauai and its surrounding waters through tomorrow morning.
As evidenced in today’s VAD wind profiles and various surface observations along the slopes of Haleakala and Maui’s central valley, trades peaked at high end breezy with localized windy gusts.
The tight pressure gradient over the islands from strengthening surface high pressure centered far northwest of the area will guarantee that early week trades remain breezy to locally windy across exposed high terrain and more efficiently funneled through valleys and channels through Tuesday.
Today’s precipitation numbers were greatest across the north and east facing mauka slopes of Kauai.
This will remain the case the next several days as the aforementioned boundary begins to drift southward and settles over the state.
This boundary will not only increase shower chances but will disrupt the gradient just enough across the islands to allow trades to fall back to gentle to breezy speeds by Tuesday morning.
High Surf Warning until 6 PM HST Sunday for Niihau, Oahu North Shore, Olomana, Maui Windward West, Kauai North, Kauai East, Koolau Windward, Molokai Windward, Molokai North, Maui Central Valley North, Windward Haleakala, Big Island East, Big Island North.
High Surf Advisory until 6 PM HST Sunday for Kauai Leeward, Waianae Coast, Maui Leeward West, Molokai West.
Small Craft Advisory until 6 AM HST Monday for Kauai Northwest Waters, Kauai Windward Waters, Kauai Leeward Waters, Kauai Channel, Oahu Windward Waters, Oahu Leeward Waters, Kaiwi Channel, Maui County Windward Waters, Maalaea Bay, Pailolo Channel, Alenuihaha Channel, Big Island Windward Waters, Big Island Leeward Waters, Big Island Southeast Waters.
Copyright 2025 Nexstar Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
For the latest news, weather, sports, and streaming video, head to KHON2.
