Puna Weather
Thursday 10th September 2026
Today decreasing humidity and decreasing showers through the day with light to moderate easterly trade winds.
Friday through Sunday light to moderate easterly trade winds with widely scattered showers, mostly during the night and early morning hours.
Beginning Monday or Tuesday hot and humid with scattered showers, possible heavy at times. Winds light to moderate from the east.
Moisture from Lowell and Karina is being pushed up our mountains by easterly trade winds for some impressive rain totals.
Continued easterly flow brings drier air later today for less humidity and less showers through Sunday or Monday.
The GFS has been hinting at a weak low forming to our southeast this weekend and heading north, bringing more tropical moisture to our shores beginning either Monday or Tuesday depending on which model you prefer. Deep shear is forecast over our island keeping this low from being a threat to us. Behind this feature is moisture from Norbert.
The forecast for Norbert is pretty confusing. The GFS shows shear over the storm for the next week, keeping the storm from strengthening until it finally fades by either going northwest or southwest??? None of the models bring the storm to tropical storm strength before reaching 130W, but it's already at tropical storm strength and the latest ADT analysis has Norbert currently down to 999mb. The European model waits to develop Norbert until 145W, then quickly strengthens the storm to a powerful hurricane. The ICON model brings Norbert to hurricane strength by 130W as does the NHC. Given the tremendous spread in model solutions, I think we're going to have to just wait and see what happens.
Currently Norbert is experiencing westerly shear which is pushing a majority of the convection to the storm's east, but convection is deep and sustained so maybe Norbert will slowly strengthen despite the shear given the warm waters it's over.
If Norbert poses a threat to us, it would be over a week away.
