Light to moderate rain will continue through tonight over the western portion of the state. A few showers may be locally heavy. Quieter weather then settles in for the remainder of the week and light trades return by week's end.
Issued at 802 PM HST Sun Apr 12 2026
Low cigs and SHRA will continue over the islands through the overnight into tomorrow. MVFR and some isol IFR conds possible especially across the western side of the state. Winds should remain light.
AIRMET Sierra is in effect for mtn obsc for Kauai to Maui. This may be expanded to include the Big Island.
AIRMET Tango is in effect for mod turb btn 120-FL280. Conds should slowly improve into tomorrow.
A weak surface trough will linger in the vicinity of the central and northwestern islands into early next week, keeping moderate to fresh southeasterly winds to its east, and light to moderate southerly winds to its west. This weak surface boundary along with an upper level disturbance moving over the region is currently bringing another round of showers and the potential for isolated thunderstorms this afternoon into Monday. As the surface trough lifts northwest and high pressure to the northeast begins to take over at the surface, gentle to moderate easterly trades will gradually develop across the Hawaiian coastal waters by the end of the week.
A moderate, medium-period north-northwest swell (340 degrees) generated by the formerly-gale force low north-northwest of the main Hawaiian islands is filling in along north and west facing shores this afternoon. This swell will maintain small to moderate surf through Monday, followed by a decline in northwest swell energy for the rest of the week.
A medium-period south swell will continue to decline through Monday. By Tuesday, however, a new south swell will arrive, once again providing a boost to surf along south facing shores through mid week before gradually subsiding into the weekend.
Surf along east facing shores will remain below seasonal average with lighter than average trade winds near and upstream of the islands forecast through next week.
Flood Watch until 6 AM HST Monday for Niihau, Kauai, Oahu, Molokai, Lanai, Maui, and Kahoolawe.
