Two powerful Pacific storms threatened communities thousands of miles apart on Thursday. Category 5 Hurricane Polo sent heavy rain and high surf toward Mexico’s southwestern coast, while Tropical Storm Nolo moved toward Hawaii and was forecast to strengthen before reaching the Big Island as early as Friday.
Polo’s center and strongest winds were expected to stay offshore, but forecasters warned that its outer bands could produce life-threatening floods and landslides. The hurricane carried sustained winds near 160 miles per hour and was moving northwest along a track that should gradually take it farther out to sea.
Mexico prepares for rain and unstable slopes
Guerrero and neighboring stretches of the Pacific coast faced the greatest immediate risk. The region’s steep terrain can turn intense rainfall into fast-moving runoff and slope failures, especially where communities have limited drainage, fragile roads, or homes built near hillsides. Strong waves were already reaching beaches as businesses secured property.
Mexican authorities called for evacuations in selected areas, opened shelters, and deployed military and Red Cross personnel. Even without a direct landfall, a slow or exceptionally strong offshore hurricane can remain dangerous because rain bands repeatedly cross the same locations. Ports, fishing activity, tourism, and regional transportation may also be disrupted.
Hawaii faces a separate flood threat
Nolo was about 295 miles south of South Point, Hawaii, and was expected to become a hurricane before drawing closer to the Big Island. A hurricane watch was issued for Hawaii County. Forecasters said the storm could produce as much as 20 inches of rain in some areas, an amount capable of overwhelming streams and isolating communities.
State and county offices and public schools on the Big Island were scheduled to close Thursday and Friday. Maui County planned Friday closures as officials prepared for heavy rain, strong winds, and possible flooding. The exact track remained important: a modest shift could change which islands receive the strongest wind and heaviest precipitation.
Water can be the greatest danger
Storm categories describe sustained wind near a cyclone’s center, but they do not measure every hazard. Flooding, mudslides, storm surge, and rough surf can extend well beyond the eye and cause severe damage even when hurricane-force winds stay offshore. Mountainous islands and coastal ranges concentrate rainfall and can make conditions change quickly.
Residents in threatened areas are being urged to follow local emergency instructions, avoid flooded roads, keep supplies ready, and prepare for power or communications outages. Travelers should check airlines and lodging providers directly because schedules can change faster than general forecasts. People away from the coast may still face river flooding or blocked highways.
Forecasters will refine their guidance as new aircraft, satellite, radar, and buoy observations arrive. Short-term changes in speed or structure can shift the corridor of heaviest rain, which is why watches and warnings may expand even when the projected center line appears steady.
The simultaneous threats illustrate why emergency planning must focus on local impacts rather than the location of a storm’s center alone. Mexico’s coast may avoid Polo’s eyewall and still suffer dangerous rainfall. Hawaii may see Nolo intensify on approach. In both places, the next forecast updates and instructions from local authorities will be more important than any single headline wind speed.