Tropical Storm Nolo Threatens Hawaii With Catastrophic Floods
• Tropical Storm Nolo, recently named on September 23, 2026, is intensifying south of Hawaii and is expected to reach hurricane strength by September
• The storm is forecast to bring heavy rainfall, with potential for 'catastrophic flooding' in the eastern Hawaiian Islands, particularly the Big Island and Maui. As of 11 a.m. HT (5 p.m. EDT) on September 23, Nolo was located 310 miles south of South Point, Hawaii, with sustained winds of 40 mph, moving west-northwest at 6 mph. A hurricane watch has been issued for the Big Island, and the storm is expected to pass approximately 100 miles south-southeast of the island late on September 25, with sustained winds of 110 mph, just below Category 3 strength. The National Weather Service has also issued a flood watch for the Big Island, Maui, Lanai, Molokai, and Kahoolawe through September 26.
Impact & Risks
The eastern Hawaiian Islands, particularly the Big Island and Maui, are at risk of significant flooding and mudslides due to heavy rainfall from Tropical Storm Nolo. Rainfall totals could exceed a foot in some areas, with higher elevations on the Big Island potentially receiving 24 to 36 inches over three days. The southeast Big Island is especially vulnerable as it is still recovering from flooding caused by Hurricane Lala earlier this year. Life-threatening surf and rip currents are expected as swells arrive on September 25, spreading westward and intensifying over the weekend. Property damage, landslides, and hazardous travel conditions are likely in affected areas.
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