Oahu and Maui are set to brace for blustery conditions as moderate to breezy easterly trade winds continue throughout the week. According to the
National Weather Service in Honolulu
, these winds are anticipated to become strong and gusty by Wednesday, with the possibility of showers favoring windward and mauka locations when pockets of moisture move through the area.
The forecast solidifies around the persistence of breezy easterly trades, courtesy of deep layer ridging to the north. A shallow low cloud band, responsible for the scattered windward showers, especially for the smaller islands, is expected to gradually shift westward, auguring drier air to fill in from today through tomorrow. However, “strong high pressure builds to the north in the wake of a cold front,” as stated by the
NWS
, which may intensify the trades to near gale force midweek and onwards.
In terms of aviation, pilots can expect the breezy trades to stay the course for the coming days. Low clouds and showers are likely to mainly impact windward and mauka areas, with isolated cases spilling over to leeward locales. Navigational conditions are mostly predicted to remain VFR, but temporary MVFR conditions could occur in heavier showers. The aviation sector should note that AIRMET Tango for moderate low-level turbulence is currently in effect over and downwind of all island terrain.
For seafarers, the waters around Hawaii are subject to a Small Craft Advisory, which has been expanded to include areas around Oahu and Maui. As a strong high pressure system moves in by Wednesday, “trade wind speeds will strengthen to near gale levels,” as noted by the
NWS
, which will likely lead to SCA conditions extending to all Hawaiian Coastal Waters. Meanwhile, an incoming moderate NW swell is set to elevate surf conditions to advisory levels on northern and western shores.
Coastal areas are also advised to be on the lookout as the monthly peak tides approach from Thursday to Monday next week, creating potential for coastal inundation during early morning high tide periods. This risk is compounded by the possibility of large wind waves driving surf heights beyond the typical advisory thresholds along eastern shores. Residents in vulnerable coastal regions on all islands should prepare for these heightened conditions.
The current NWS advisories underscore the need for caution among both mariners and coastal residents. Active advisories include the Small Craft Advisory in effect until 6 AM HST Wednesday for various waters around the archipelago. More updates and details on weather and marine conditions can be found by visiting the
NWS website
.
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