Moderate to locally breezy trade winds will persist into the upcoming weekend. Bands of low clouds and showers will be at times be carried in on the trades, focused primarily over windward and mauka areas during the overnight and early morning hours. One such band is moving through the islands today and tonight. Additionally, humidity levels will rise, bringing muggier conditions across the island chain through the middle of this week.
Low clouds and scattered showers associated with a dissipated trough will push through the island chain today. Breezy trade winds will focus showers across windward sides, with a few showers reaching leeward sides of the smaller islands.
AIRMET Sierra remains in effect for tempo mountain obscuration above 2000 feet for windward sides of Kauai, Oahu, Molokai, Maui and Big Island due to these showers. Expecting this AIRMET to remain in effect at least through early afternoon, and potentially the rest of today, until this moisture moves west of the area.
AIRMET Tango is also posted for tempo moderate leeward turbulence below 8000 feet for all islands due to the breezy trade winds. Expect this AIRMET to continue at least for the next couple of days.
An area of surface high pressure will remain centered well north of the Hawaiian Islands this week and help drive moderate to fresh trades trades across the region. The Small Craft Advisory (SCA) will continue through this afternoon for much of the waters around Maui County and Big Island, as well as the Kaiwi Channel. The SCA will then be trimmed back to the typical windy waters around Maui County and the Big Island by this evening as trades ease slightly into Tuesday.
The current moderate, long-period south swell will maintain today, then gradually decline through midweek, leading to a decreasing trend in south and west shore surf through Wednesday. A small bump in south shore surf is possible Thursday into Friday with the arrival of a small, long-period south swell, but another larger long-period south swell energy pulse should arrive by late Saturday.
Surf along east-facing shores will remain rough and choppy through the week with moderate to fresh trades in place. Nearly flat surf heights will persist along north facing shores.
Small Craft Advisory until 6 PM HST this evening for Big Island Windward Waters-Kaiwi Channel-Maui County Windward Waters.
Small Craft Advisory until 6 PM HST Tuesday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast Waters- Maalaea Bay-Pailolo Channel.
