Dry Thunderstorms Possible for Hawaii Island

Got story updates? Submit your updates here. ›

The National Weather Service in Honolulu is forecasting the potential for 'dry' thunderstorms over Hawaii's Big Island on Tuesday afternoon. An upper-level trough and a high-pressure system north of the islands are driving strong trade winds and limiting moisture, which could result in thunderstorms producing lightning with little to no rainfall.

Why it matters

Dry thunderstorms can still pose a fire risk, as lightning strikes can ignite dry vegetation. This weather pattern is unusual for Hawaii, where thunderstorms typically bring heavy rainfall. The dry conditions and potential for lightning strikes will require extra caution from residents and visitors on the Big Island.

The details

According to the weather forecast, the upper-level trough and high-pressure system will produce thick cirrus clouds over the eastern end of the state and drive fresh to strong trade winds. While the trade winds will bring low clouds and light showers to windward areas, the relatively dry air mass will limit rainfall accumulations. However, some weather models indicate a slight increase in thunderstorm potential, particularly along the southern slopes of the Big Island, starting Tuesday afternoon.

• The National Weather Service has issued a Small Craft Advisory until 6 PM HST Tuesday for all Hawaiian waters.
• The potential for dry thunderstorms is forecast for Tuesday afternoon over the Big Island.

What’s next

Residents and visitors on the Big Island should monitor the weather conditions and be prepared for the possibility of dry thunderstorms, which could pose a fire risk despite the lack of rainfall.