Breezy to locally windy trade winds will persist through Thursday. Pockets of moisture embedded with the trade wind flow will focus showers over windward and mauka areas with some showers spilling over leeward areas. Trades winds will increase in strength Friday into Saturday due to a tropical disturbance passing well to the south of the area and a strong high building in from the northwest. Enhanced trade wind showers are also anticipated for windward areas later this week and into the weekend as tropical moisture surges in from the south.
Breezy trades expected for next few days. Low cigs and SHRA will continue over windward and mauka locations with some spillover into leeward areas at times. MVFR conds in SHRA, otherwise VFR prevails.
AIRMET Sierra is in effect for mtn obsc for windward portions of all island except Lanai. Conds should improve in the mid morning hours.
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 remain in place throughout the week as a broad area of high pressure remains in place north of the state. Small Craft Advisory (SCA) is in effect for all Hawaiian Waters and the SCA conditions will likely persist across the state through the weekend due to a combination of winds and seas. Additionally this weekend, a tropical cyclone could pass far south of the state. According to National Hurricane Center, there is a medium chance of formation during the next 48 hours.
Surf along north and west-facing shores will quickly build late tonight into the morning hours on Thursday as a new long-period north-northwest swell arrives. Latest buoy reading at buoy 51001 as of 710 PM showed a significant increase of energy across the 17 to 19 seconds spectral bands, which should translate to surf quickly exceeding advisory levels during the morning hours on Thursday. High Surf Advisory is in effect for most north and west facing shores of the smaller islands on Thursday. This swell is expected to peak during the day Thursday then fade over the next few days. Surf will likely be at borderline High Surf Advisory thresholds on Friday as the north-northwest swell declines. Additional reinforcing energy is expected out of the north- northwest over the weekend, which could produce advisory level surf once again Saturday night into Sunday morning.
A compact fetch of gales passing east of New Zealand last week Friday should produce some waves slightly above average around Friday into Saturday along south facing shores. Surf along east- facing shores will stay elevated and choppy through much of the week due to the strong trades.
High Surf Advisory from 6 AM Thursday to 6 AM HST Friday for Kauai North-Kauai Southwest-Maui Central Valley North-Maui Windward West-Molokai North-Molokai West-Molokai Windward-Niihau- Oahu North Shore-Waianae Coast-Windward Haleakala.
Wind Advisory until 6 AM HST Thursday for Big Island North- Kohala.
Small Craft Advisory until 6 AM HST Friday 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.
