Hurricane Polo’s historic intensification in the Eastern Pacific has collapsed into remnant moisture barreling toward the U.S.
Hurricane Polo’s Historic Pacific Rampage and Landfall
Hurricane Polo made its presence felt across the Eastern Pacific before threatening North America with severe weather. The storm underwent extreme rapid intensification, transforming into a monster Category 5 hurricane with a central pressure plunging to 892 millibars—the second-lowest pressure ever observed in the Eastern or Central Pacific, according to the National Hurricane Center. Its maximum sustained winds increased by 110 mph in just 24 hours, tying it with Hurricane Rick from 2009 for the third-highest winds ever recorded in the Pacific at 180 mph. After completing an eyewall replacement cycle that briefly dropped it to a Category 4 storm, Polo regained Category 5 strength before weakening again as it approached land.
By late Monday, the storm zeroed in on Baja California Sur with sustained winds near 115 mph. Residents in fishing villages such as Puerto San Carlos boarded up homes, hauling dirt and rubble to reinforce embankments against high tides and pounding waves. Mexico’s official emergency management and disaster-response system, Civil Protection, urged evacuations from high-risk coastal zones as forecasters warned of 6 to 12 inches of rain across parts of Baja California Sur, raising the risk of deadly flash floods and mudslides over steep terrain. In-person classes were suspended across schools in Baja California and Sonora before Polo was projected to make a second landfall in southern or central Sonora.
Torrential Rains and Flash Flood Emergencies Across the Southwest
Though Polo lost its hurricane status as it pushed across Mexico, its massive surge of waterlogged air—combined with moisture from former hurricane Odalys and a third Pacific tropical storm named Rachel—unleashed a dangerous flood threat across the U.S. Southwest and Plains.
A near-record to record surge of moisture combined with two merging storm systems will bring a prolonged multi-day period of showers and thunderstorms producing moderate to heavy rainfall.
National Weather Service in Albuquerque
The dangers materialized quickly as weather systems collided. North of Phoenix, a box truck was swept away by floodwaters, though the driver escaped safely, and at least one other water rescue was performed in the metro area. In drought-stricken regions of New Mexico, Colorado, Oklahoma, and Texas, rainfall totals of 4 to 8 inches or more were forecast in areas where annual averages are only 10 to 15 inches.
Expanding Threat Zones Across the Central Plains and Midwest
The tempestuous weather pattern is locked in place by an approaching slow-moving frontal boundary in the Plains and an eastward-blocking heat dome forming near Florida. This setup keeps the tropical moisture stalled over the central states from Wednesday to Friday. Jonathan Finch, a meteorologist at the National Weather Service office in Dodge City, Kansas, noted in a Tuesday morning forecast discussion that heavy rains from the remnants of tropical systems are very rare across western Kansas.
- Texas and Oklahoma: Southern Plains areas including Dallas, Austin, San Antonio, Waco, and Killeen face 3 to 5 inches of rain with locally higher amounts along Interstate 35, where some residents may experience double-digit totals. This marks the heaviest rain event in eastern Oklahoma since June and in the Dallas-Ft. Worth Metroplex since early July. Strong jet stream dynamics also threaten severe thunderstorms, straight-line gusts, and isolated tornadoes.
- Colorado and New Mexico: Southeastern Colorado, including Colorado Springs, faces potential stalling if upper-level disturbances steer the storm into the Rocky Mountains. Denver-based meteorologist Chris Bianchi wrote on X that there is a growing potential for a very significant Colorado rain event Tuesday-Thursday.
- Central Plains and Midwest: A stripe of 3 inches or more of rain is expected from Kansas to southern Nebraska, northern Missouri, southern Iowa, and northern Illinois, with tropical moisture extending as far north as Minnesota, Wisconsin, and Michigan.
With severe weather warnings active, forecasters reiterate standard safety advisories for motorists encountering water over roadways.