Potential Tropical Cyclone Near Hawaii Forecast To Bring Heavy Rain
On Thursday, August 13, 2026, the National Hurricane Center said Potential Tropical Cyclone One-C was about 775 miles east-southeast of Hawaii with 40 mph winds.[1] Forecasters said One-C could reach the southern Big Island as a tropical storm on Saturday, bringing heavy rain, high winds and dangerous surf.[1]
Rainfall of 5 to 10 inches is expected across Hawaii, with isolated amounts up to 20 inches that could trigger flooding and mudslides.[1] High surf and dangerous rip currents are also forecast as the system approaches.[1]
Tropical Storm Hernan formed in the eastern Pacific about 1,460 miles west of the southern tip of Baja California with 40 mph winds and currently poses no threat to land.[1] The two systems are separate, with One-C the primary concern for Hawaii over the coming days.[1]
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📌 Key Facts
- On Thursday, August 13, 2026, the National Hurricane Center said Potential Tropical Cyclone One-C was about 775 miles east-southeast of Hawaii with 40 mph winds.
- Forecasters said One-C could reach the southern Big Island as a tropical storm on Saturday, bringing heavy rain, high winds and dangerous surf.
- Rainfall of 5-10 inches is expected across Hawaii, with isolated amounts up to 20 inches that could trigger flooding and mudslides.
- Also on August 13, 2026, Tropical Storm Hernan formed in the eastern Pacific about 1,460 miles west of the southern tip of Baja California, with 40 mph winds and no land threat.
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