PHOENIX — Remnants of former Hurricane Polo drenched the Southwest on Tuesday into Wednesday, flooding Arizona roadways, prompting several water rescues near Phoenix, and forcing New Mexico communities along the Rio Grande to evacuate over dam-failure fears, the Associated Press reported.
Polo had struck Baja California Sur with 110 mph winds before crossing the Gulf of California and weakening. By Tuesday evening, New Mexico transportation officials reported flooded highways and debris, while Arizona saw especially heavy rainfall. Arizona Fire and Medical Services video showed a helicopter lowering a rescuer to a person clinging to an overturned vehicle in floodwaters west of Phoenix. North of Phoenix, a truck was swept into a wash; the driver escaped, Maricopa County sheriff’s officials said.
In south-central New Mexico, potential dam failure prompted evacuations in Rincon, Salem, and Garfield, with later orders for Hatch — known for green chile agriculture — and Placitas. National Weather Service meteorologist Carter Greulich in Albuquerque warned of urban flooding and urged drivers to stay out of flooded roadways and arroyos.
Utah’s Zion National Park area also saw flash flooding; a helicopter rescued three people in Heaps Canyon, and the East Fork of the Virgin River ran high with debris. The Bureau of Land Management in Arizona reported damaged access roads in a southeastern conservation area and sand-dunes recreation site. An unusually wet September left soils saturated, so new rain runs off faster, Greulich said.
Flood watches stretched across wide parts of the Southwest, with risk expected to shift toward the central United States later in the week. Pacific storm activity remains elevated; Tropical Storm Rachel was moving parallel to Mexico’s coast with hurricane potential, AP noted.
For Maricopa County and desert communities that typically see under 10 inches of rain a year, the message from emergency managers is familiar but urgent: turn around, don’t drown, and treat normally dry washes as lethal when tropical moisture arrives. This update centers on the rescue and evacuation wave after Polo’s remnant plume — a new operational chapter beyond earlier flood-watch alerts alone.
Desert hydrology magnifies relatively modest storm totals: steep terrain, burn scars from recent wildfires, and urban pavement funnel water into washes that look harmless until a wall of muddy runoff arrives. Maricopa County’s repeated public-safety campaigns exist because most flood deaths in the region involve vehicles, not living rooms.
As Polo’s moisture lifts northeast, Arizona emergency managers still want residents to treat Wednesday’s all-clear assumptions carefully — additional bands can redevelop, and saturated ground means secondary slides and sinkholes on rural roads. Travelers heading to Utah parks or New Mexico chile country should check closures before driving canyon or farm-to-market routes.
Based on Associated Press reporting carried by NBC News (Sept. 30, 2026). Rescue and evacuation details as attributed to Arizona Fire and Medical Services, Maricopa County sheriff’s officials, New Mexico agencies, and NWS.