A funnel cloud has been spotted over Central Oahu. Several viewers sent in photos of the cloud forming over Wahiawa.
Funnel clouds are tornadoes that don’t touch the ground and are relatively common in the area, when conditions are favorable. They require flat land, light wind conditions and unstable weather, and generally form in the afternoon when temperatures are higher.
The funnel cloud appeared as Honolulu was under a flood advisory. Radar showed areas of heavy rain near Pearl City, along the Waianae coast near Makua Valley and along the Koolau range above downtown Honolulu.
The National Weather Service issued a second flood advisory for the island of Oahu until 8:15 p.m. after radar showed heavy rain near Makakilo, about 15 miles west of Honolulu.
The area of heavy rain was slowly drifting south.
Other locations in the advisory include but are not limited to Waikele, Kunia, Waipahu, Nanakuli, Maili and Ewa.