Heavy rain will continue over Leeward Big Island while conditions improve over the western end of the state. Wet weather will continue through the week.
Issued at 852 AM HST Sun Mar 15 2026
Low cigs and SHRA continue across the islands. This entire system is moving northeastward. A few isol TSTMs are possible over the Big Island. As far as the winds, they have begun to weaken slightly and veer more west-southwesterly over the western end of state, but still remain gusty in some spots especially over the windward portions of those islands. Over Maui and the Big Island, breezy and gusty winds are still possible through today.
AIRMET Sierra is in effect for mtn obsc for all islands except Kauai. AIRMET Sierra for IFR is no longer in effect for the Big Island, but brief and isolated IFR conditions are still possible today.
AIRMET Tango remains in effect for mod mid-upper level turb between 130 and FL330. It is is also in effect for turb downwind N thru E of terrain statewide. Conds should continue this morning and gradually improve west to east.
Light icing is possible between 130 and FL260 as mid-high clouds continue moving through the islands. These conds are expected to gradually improve today.
The powerful Kona storm will weaken as it moves northeast and away from the area during the next few days, with conditions improving over the coastal waters. Winds have dropped below Gale force over the coastal waters, therefore the Gale Warning has been cancelled and replaced with a Small Craft Advisory (SCA), which is in effect for all zones through 6 PM this evening. The SCA may need to be extended for portions of the waters around the Big Island tonight. Winds will ease below advisory levels across all waters by Monday and then remain light and variable Tuesday and Wednesday. Ridging is forecast to strengthen north of the islands late in the week, which should bring a return of moderate to fresh trade winds.
Strong southerly winds will keep large and rough surf in place along south facing shores today, with the surf then trending lower tonight and Monday. A new long period south swell will arrive late Monday night and Tuesday, giving a nice and extended boost to south shore surf through late next week.
A moderate sized short-period west swell associated with the Kona storm will affect north and west facing shores during the next couple days, but surf will remain below advisory levels. The one exception is over west facing shores of the Big Island, where advisory level surf is expected today. As a result, a High Surf Advisory has been issued for west facing shores of the Big Island through 6 pm this evening. The short-period swell will lower Monday night and Tuesday, while a new medium-period north- northwest swell fills in. This north-northwest swell could bring surf up to advisory levels Tuesday night and Wednesday, with the swell then shifting more northerly and lowering below advisory levels Thursday into next weekend.
Surf along east facing shores will remain well below normal levels through the middle of the week, before trending upward Thursday into next weekend as trade winds return over and upstream of the islands.
Wind Advisory until 6 PM HST this evening for Big Island Interior-Big Island North-Big Island South-Big Island Southeast- Central Oahu-Kauai East-Kauai Mountains-Kauai North-Kohala-Kona- Koolau Leeward-Koolau Windward-Maui Central Valley North-Maui Windward West-Molokai North-Molokai Southeast-Molokai Windward- Oahu North Shore-Olomana-South Maui/Upcountry-Waianae Mountains- Windward Haleakala.
Flood Watch through late tonight for Big Island East-Big Island Interior-Big Island North-Big Island South-Big Island Southeast- Haleakala Summit-Kahoolawe-Kipahulu-Kohala-Kona-Lanai Leeward- Lanai Mauka-Lanai South-Lanai Windward-Maui Central Valley North- Maui Central Valley South-Maui Leeward West-Maui Windward West- Molokai Leeward South-Molokai North-Molokai Southeast-Molokai West-Molokai Windward-South Haleakala-South Maui/Upcountry- Windward Haleakala.
High Wind Warning until 6 PM HST this evening for Big Island Summits-Haleakala Summit.
High Surf Advisory until 6 PM HST this evening for Kohala-Kona.
Winter Storm Warning until 6 AM HST Monday for Big Island Summits.
Small Craft Advisory until 6 PM HST this evening for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Big Island Windward Waters-Kaiwi Channel-Kauai Channel-Kauai Leeward Waters-Kauai Northwest Waters-Kauai Windward Waters- Maalaea Bay-Maui County Leeward Waters-Maui County Windward Waters-Oahu Leeward Waters-Oahu Windward Waters-Pailolo Channel.
