A preventive Plan Marina activation now covers Colima, Guerrero, and Oaxaca, but one detail brings the notice closer to Puerto Vallarta. The Manzanillo-based command that includes this port has put crews, boats, vehicles, and emergency equipment on standby while federal forecasters track Boris and another Pacific low. The storm warning sits farther south. The preparation, however, extends to Jalisco’s coast, where rough seas and heavy rain can still quickly change local plans.
Navy puts emergency crews on standby
Mexico’s Navy activated Plan Marina in prevention mode along parts of the Pacific coast. The move came as Tropical Storm Boris and another low-pressure area kept forecasters focused on southern and central Mexico.
The activation covers Colima, Guerrero, and Oaxaca, according to the Navy’s Plan Marina communiqué. Puerto Vallarta is named in the same notice. The Sixth Naval Region is based in Manzanillo, and its command area includes the ports of Manzanillo and Puerto Vallarta.
That command said it has 278 naval personnel ready. It also listed a 126-member emergency brigade, 16 vehicles, 14 boats, and 166 pieces of special equipment. The list includes a mobile kitchen, water-purification plants, pumps, heavy machinery, chainsaws, and drones.
The Navy described the step as preventive. This is not a rescue operation already underway in Puerto Vallarta. It is a readiness order, built around weather checks, Civil Protection meetings, and crews prepared before conditions worsen.
Local readers have been watching this system since last week, when the Pacific storm watch expanded toward Puerto Vallarta. The Navy activation adds a security and emergency layer to that forecast.
Boris brings the first serious Pacific test
At 6 a.m. Monday, the National Hurricane Center placed Tropical Storm Boris near 15.9 degrees north and 99.2 degrees west. That was about 85 miles southeast of Acapulco and 50 miles southwest of Punta Maldonado. Maximum winds were near 40 mph, or 65 km/h. Boris was crawling northeast at 2 mph (4 km/h).
The center’s advisory led with a blunt line. “Boris is moving very slowly off the coast of Guerrero, Mexico.” It also warned that “flooding rains are likely over portions of southern Mexico.”
The tropical storm warning ran from Laguna de Chacahua to Tecpan de Galeana. That zone is well south of Puerto Vallarta.
Mexico’s Servicio Meteorológico Nacional said its Monday morning forecast expected a broad rain pattern over much of the country. The agency tied the weather to Boris, a trough in the middle and upper levels of the air, low-pressure channels, and unstable air.
For the central Pacific, the forecast called for heavy rain in parts of Jalisco, Colima, and Michoacán. It also warned of strong wind gusts on the Jalisco and Colima coasts. Seas of 3 to 4 meters were forecast along those two coastlines.
What changes around Puerto Vallarta
Puerto Vallarta was not listed inside the tropical storm warning area; the command area and coastal readiness are precautionary.
The Navy asked the maritime community to watch notices from port captains. Its weather site also keeps an operational port status page. Boat operators normally check that page when conditions change.
That guidance applies to tour boats, fishing crews, private vessels, and anyone planning to be on the water.
The same unsettled pattern also appears in today’s local weather coverage. The hurricane-season archive is collecting the season’s storm updates.
Boris could bring rain and waves to the coast of Puerto Vallarta; however, tropical storm conditions are not expected.
Federal response broadens
President Claudia Sheinbaum also said the federal government had activated Plan Marina and Plan DN-III-E. She said the work was being coordinated with Conagua, the national Civil Protection, and state and municipal governments.
“The Government of Mexico is prepared to assist the population before Tropical Depression Two-E, which is expected to evolve into Tropical Storm Boris during the early morning of June 8,” she wrote in a public message before Boris strengthened.
She also asked people in Guerrero and Oaxaca, especially along the coast from Lagunas de Chacahua to Tecpan de Galeana, to follow official warnings. Her message also named Colima, Jalisco, Michoacán, and Nayarit. “Prevention and timely information are fundamental to protect the life and property of families,” she wrote.
The Navy said naval commands have been holding meetings with Civil Protection. Crews have reviewed temporary shelters, checked vulnerable zones, and kept maritime rescue stations on alert.
By Monday morning, Boris had already strengthened. The storm was still aimed at Guerrero. The emergency plan, though, now stretched across the broader Pacific response network, which includes Puerto Vallarta’s naval command area.
