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Forecast: Trade winds continue to dominate

Steady trade winds
Trade winds continue to dominate
Published: Mar. 21, 2022 at 3:11 AM HST|Updated: 55 minutes ago

HONOLULU (HawaiiNewsNow) - High pressure far north of the main Hawaiian Islands will drive moderate to breezy trade winds across local waters through Friday. Clouds and showers embedded within trade flow will favor windward and mountain areas, mainly during the overnight to early morning hours. An upper low may briefly increase cloud and shower coverage next weekend.

Satellite loop shows irregular bands and patches of low clouds embedded within trade flow, with one of these bands now moving westward away from the islands. Cloud and shower coverage has decreased across the smaller islands since this morning, but both have increased across leeward portions of the Big Island. Radar shows isolated to scattered moderate showers clouds lingering across windward coasts. With stronger trade winds, expect a more pronounced trade wind weather pattern through the work week. Clouds and showers will favor windward and mountain areas, mainly at night and during the morning hours. Cloud cover, with minimal shower activity, will develop across leeward sections of the Big island each afternoon, thanks to a combination of daytime heating and return flow.

Models show an upper low will drift into the area from the southeast by this weekend. The passage of this low may briefly increase cloud and shower coverage this weekend as the subsidence inversion rises and moisture increases. However, trade wind flow will persist, possibly even strengthen, as the upper low moves by. So far, it looks like this upper low will have only a small effect on our weather.

The recent long period south swell is maintaining advisory level surf along many southern coasts today. Although this swell is falling today, another swell pulse from the south should keep south shore surf elevated to near advisory heights into and possibly through Tuesday.

Wishing you blue skies and much aloha. Have a wonderful rest of your week and enjoy this Summer weather- lucky we live Hawaii. Hard to believe how fast this year is going by! So make sure to soak in the beauty of the islands and enjoy times with those you love!

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