Puna Weather
Wednesday 18th March 2026
Today very humid with light winds from the northeast and widely scattered showers, possibly heavy at times.
Thursday and Friday light to moderate south winds and very humid with widely scattered showers, possibly heavy at times. Widespread VOG possible.
Saturday and Sunday very humid with light winds and scattered showers, possibly heavy at times. Widespread VOG possible.
Yesterday's thunderstorm was most unusual due to a lack of cold air aloft. Today has a similar pattern, but there is a little mid-level dry air (skew-t) filtering into the region and a jet stream trough to a north has now passed, placing us on the more stable side of the trough axis (200mb chart). Therefore I have not added thunder to today's forecast.
A mid/upper low forms to our northwest as we head into the weekend. This turns surface winds to southerly and keeps winds aloft out of the southwest, pulling more tropical moisture over us (770-300hPa moisture).
Long range models show a return of more typical easterly trade flow early next week. With all the deep tropical moisture in place over the region, returning windward flow would result in more heavy showers.
