Breezy trade winds will prevail through much of the week as surface high pressure holds north of the state. Pockets of moisture moving in the trades will focus rainfall over windward and mauka areas with showers briefly passing over leeward areas. An area of deeper moisture may enhance showers on windward Big Island Friday and Saturday.
Breezy trades expected for next few days. Low cigs and SHRA will continue over windward and mauka locations with some spillover into leeward areas. MVFR conds in SHRA, otherwise VFR prevails.
AIRMET Sierra is in effect for mtn obsc for the smaller islands and windward Big Island. Conds should improve mid morning.
AIRMET Tango remains in effect for mod turb lee of terrain and should remain in effect for next few days.
Fresh to strong trade winds will persist for most of the week across most coastal waters as high pressure remains in place north of the region. While winds may decrease to fresh speeds across some northern zones on Thursday, an incoming northwest swell is likely to produce 10 ft seas across portions of the coastal waters, thus Small Craft Advisory (SCA) conditions will likely persist across many zones throughout the week. Additionally, from Thursday through early this weekend, a broad area of low pressure with high potential to develop into a tropical cyclone according to National Hurricane Center forecasts will approach and pass south of the islands, potentially enhancing winds over far southeast waters.
Surf along north- and west-facing shores will continue to decrease through Wednesday as a moderate, north-northwest swell fades and shifts more northerly, though another small long period north- northwest reinforcement arrives tonight. Another more significant moderate, long-period northwest swell will arrive Wednesday night into Thursday morning and will likely push north and west shore surf to advisory levels for Thursday into Friday. An additional medium-period swell moderate swell is expected to fill in on Saturday, likely prolonging moderate to large surf action into the weekend.
A compact fetch of gales passing east of New Zealand last week Friday should produce some waves slightly above average around Friday into Saturday. East- facing shores will see continued moderate trade wind swell as strong northeast winds remain. Surf along east- facing shores will stay elevated and choppy through much of the week with the gusty trades.
Small Craft Advisory until 6 PM HST Wednesday for Alenuihaha Channel-Big Island Leeward Waters-Big Island Southeast 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.
