Puna Weather
Monday 7th September 2026
Today and Tuesday very warm and humid with periods of heavy rain. Thunderstorms are possible both days, but more likely Tuesday. Winds moderate to breezy from the south. Some flooding is possible both days.
Wednesday and Thursday moderate easterly trade winds with scattered to numerous windward showers.
Friday and Saturday less humid.
At 8am Lowell is being steered by an upper level low to its north. The low is moving west (satellite water vapor animation). Currently Lowell is on a path towards Kauai, but as the upper level low moves west, Lowell is forecast to turn towards the north and just barely miss the island. If Lowell turns early it will be farther from Kauai for less wind, if it turns later Kauai is in danger of seeing hurricane conditions.
To our northeast is ex-Karina which is headed west and will be absorbed into Lowell's circulation helping to draw deep tropical moisture over us from the south. The weather satellite GEOS-18 is detecting a good amount of lightning in the convection to our south. The flow from the south is slow enough that the deep moisture and heavy rains are likely to last through Tuesday, increasing the risk of flooding.
Wednesday and Thursday our trade winds return to easterly pushing any remnant moisture up against our mountains and maintaining the wet weather for longer.
