Hail was even reported on the islands as the storms moved onshore early in the week, and there were several reports of waterspouts captured off Maui.
Okay, I know what you’re thinking, “waterspouts and hail happen all the time in thunderstorms.” True! But not in Hawaii. Downpours are common during the rainy winter season, but explosive storms are not.
The very warm and tropical maritime climate keeps the atmosphere over Hawaii stable most of the year. For severe weather to occur, a strong low-pressure system is necessary to generate instability and comes around only once in a great while.
But earlier this week, low pressure hovered over the region, which would allow warm, moist air to rapidly ascend into the colder air aloft forming thunderclouds. The National Weather Service in Honolulu frequently mentioned the presence of sufficient atmospheric instability for hail in the stronger storms.
The most intense storms, which prompted severe thunderstorm warnings, occurred over the Big Island.
The three severe thunderstorm warnings issued by the Weather Service in Honolulu were the first during February in 12 years. Before this February, you have to go back to February 2006, when two warnings were issued.
On average, the Weather Service in Honolulu issues only 3.6 severe thunderstorm warning per year, and less than one tornado warning. Since 2005, it has only issued two tornado warnings, the last instance in December 2008.
Weather is awesome. #cwgpicoftheweek
Huge thank you to photographer Anthony Quintano for sharing his photo with us this week. For more of his epic natural photography, check out his Instagram page!