By — Associated Press Associated Press Leave your feedback Share Copy URL https://www.pbs.org/newshour/science/tropical-storm-hernan-forms-in-the-pacific-while-a-different-weather-system-could-soak-hawaii Email Facebook Twitter LinkedIn Pinterest Tumblr Share on Facebook Share on Twitter Tropical Storm Hernan forms in the Pacific while a different weather system could soak Hawaii Science Aug 13, 2026 9:35 AM EDT HONOLULU (AP) — Tropical Storm Hernan formed Thursday in the Pacific Ocean and wasn't threatening land while a different storm system that could bring heavy rain and flooding this weekend moved toward Hawaii, forecasters said. Hernan was about 1,460 miles (2,350 kilometers) west of the southern tip of the Baja California peninsula of Mexico, the National Hurricane Center said. Maximum sustained winds were around 40 mph (64 kph) and it was moving west. Meanwhile, potential Tropical Cyclone One-C was about 775 miles (1,247 kilometers) east-southeast of Hawaii and was forecast to bring heavy rain, high winds and dangerous surf to the Hawaiian Islands starting late Friday. Winds were around 40 mph, but it wasn't organized enough to be considered a tropical storm, the Miami-based center said. It could make landfall on the southern part of the Big Island as a tropical storm on Saturday, forecasters said. READ MORE: 'Not a run-of-the-mill El Nino.' Forecasters predict historic strength The system could bring rainfall totals of 5 to 10 inches (13 to 25 centimeters) in the island chain, with up to 20 inches (51 centimeters) possible, forecasters said. That could produce flooding and mudslides, the center said. In the Atlantic Ocean, Tropical Storm Cristobal weakened into a tropical depression and was expected to dissipate Thursday, the center said. It was about 610 miles (982 kilometers) west of the Azores and didn't threaten land. A free press is a cornerstone of a healthy democracy. Support trusted journalism and civil dialogue. Donate now By — Associated Press Associated Press
HONOLULU (AP) — Tropical Storm Hernan formed Thursday in the Pacific Ocean and wasn't threatening land while a different storm system that could bring heavy rain and flooding this weekend moved toward Hawaii, forecasters said. Hernan was about 1,460 miles (2,350 kilometers) west of the southern tip of the Baja California peninsula of Mexico, the National Hurricane Center said. Maximum sustained winds were around 40 mph (64 kph) and it was moving west. Meanwhile, potential Tropical Cyclone One-C was about 775 miles (1,247 kilometers) east-southeast of Hawaii and was forecast to bring heavy rain, high winds and dangerous surf to the Hawaiian Islands starting late Friday. Winds were around 40 mph, but it wasn't organized enough to be considered a tropical storm, the Miami-based center said. It could make landfall on the southern part of the Big Island as a tropical storm on Saturday, forecasters said. READ MORE: 'Not a run-of-the-mill El Nino.' Forecasters predict historic strength The system could bring rainfall totals of 5 to 10 inches (13 to 25 centimeters) in the island chain, with up to 20 inches (51 centimeters) possible, forecasters said. That could produce flooding and mudslides, the center said. In the Atlantic Ocean, Tropical Storm Cristobal weakened into a tropical depression and was expected to dissipate Thursday, the center said. It was about 610 miles (982 kilometers) west of the Azores and didn't threaten land. A free press is a cornerstone of a healthy democracy. Support trusted journalism and civil dialogue. Donate now