Hurricane Polo has exploded into the second-strongest hurricane ever recorded in the Eastern Pacific, and its moisture is now fueling life-threatening flash floods across New Mexico.
Polo's sustained winds peaked at 180 mph on Tuesday after one of the most violent episodes of rapid intensification on record, a 110-mph increase in just 24 hours. Its central pressure bottomed out at 892 millibars, the second-lowest ever observed in the Eastern or Central Pacific basin. Since 1950, only nine hurricanes out of 1,088 documented worldwide have recorded pressures below 900 millibars. Polo joined that list in a single day.
By early Wednesday the storm had eased slightly to Category 4 status with 155-mph sustained winds, its center sitting roughly 185 miles south of Zihuatanejo, Mexico, and crawling east at just 2 mph. But the damage from Polo's moisture was already spreading far beyond the open ocean, hundreds of miles north, across the American Southwest.
A Flash Flood Emergency forced evacuations Tuesday afternoon in Mora County, New Mexico, where heavy rainfall swamped the communities of Ledoux and Mora. The Mora County Sheriff's Office urged residents and motorists to avoid all unnecessary travel and be prepared to move to higher ground.
The National Weather Service office in Albuquerque had warned a day earlier that "widespread heavy rainfall will lead to a risk of life-threatening flash flooding across much of the state." That warning proved accurate within hours. By early Wednesday, a Flash Flood Warning covered parts of southern New Mexico, including Las Cruces, and extended into El Paso, Texas.
The flooding threat was far from over. The NWS issued a Level 3 flash flood risk, on a four-point scale, for much of New Mexico on Wednesday, covering population centers from Albuquerque to Roswell. Monsoon thunderstorms fueled by Polo's moisture were expected to persist through Thursday, with dangerous conditions lasting into Friday.
New Mexico has already paid a steep price this season. Roughly a week before Polo's intensification, flooding driven by a different tropical disturbance killed three people near Newcomb, in the state's northwest corner. On September 16, a Maricopa County Sheriff's Office helicopter rescued two motorists stranded in floodwater in Arizona, another consequence of the relentless moisture streaming northward from the Pacific.
At peak intensity, Polo's 180-mph winds tied Hurricane Rick in 2009 for the third-highest wind speed ever recorded in the Pacific. Only Hurricane Patricia in 2015, at 215 mph, and Hurricane Linda in 1997, at 185 mph, produced stronger winds in the basin. FOX Weather reported that Polo is now tied for the fourth-highest wind speed ever recorded for any hurricane worldwide.
Kristen L. Corbosiero, a professor at the University at Albany's Department of Atmospheric and Environmental Sciences, told AP News:
"This is one of the strongest storms ever in the (Pacific) Basin."
Despite its ferocity, Polo remains compact. Hurricane-force winds extend only 40 miles from its center, and tropical-storm-force winds reach out 105 miles, a tight, concentrated core. Meteorologist Andy Hazelton, who flew into the storm on Tuesday as part of a Hurricane Hunter mission, posted his observations on X.
"Good first flight into #Polo today. The pressure had fallen pretty quickly, but it looks like the core is still working out some kinks. Almost looks like an eyewall replacement cycle although it's a bit early in the process for that."
That eyewall replacement cycle, a process in which a storm's inner eye weakens and reforms, often temporarily reducing intensity before another surge, may explain Tuesday's slight pullback from Category 5 to Category 4. But the storm's overall power remains extraordinary.
Polo is the third Category 5 hurricane in the Eastern and Central Pacific this season, following Genevieve and Lowell. The last time the basin produced three Category 5 storms in a single year was 2018. Before that, only the 1994 and 2002 seasons matched, the New York Post reported.
A rapidly strengthening El Niño, the periodic warming of equatorial Pacific waters that reshapes global weather patterns, is the engine behind the surge. Warmer ocean temperatures and favorable wind patterns have fueled an unusually active season, producing 19 named storms across both the Central and Eastern Pacific with more than two months still remaining.
Atmospheric scientist Matthew Cappucci captured the scale of Polo's power in a post cited by the New York Post:
"INCREDIBLE developments with Superhurricane Polo, which likely now has winds in the 175+ mph range. It has heated the air enough to lift HALF A TRILLION pounds of air out the middle, driving an incredible vacuum effect that's resulting in obscene winds."
Mexico's government issued a Tropical Storm Warning from Tecpan De Galeana to Punta San Telmo along the southwestern coast, and a Tropical Storm Watch from just west of Punta San Telmo to Playa Perula. Breitbart reported that residents in Guerrero and Michoacán states faced heavy rain, flooding, and landslide risks even without a direct landfall.
Concepción López Villegas, a resident of Lázaro Cárdenas on Mexico's coast, told AP News:
"We're worried and trying to protect our businesses. And of course, we're sad because it's our heritage, our legacy that from one moment to another could be destroyed."
Polo is not the only threat. The National Hurricane Center was tracking four areas of tropical activity across the Pacific on Tuesday. Hurricane Odalys, a Category 1 storm with 75-mph sustained winds, churned more than 1,200 miles southwest of Baja California. FOX Weather Hurricane Specialist Bryan Norcross noted the two storms could interact.
"Some computer forecasts show Odalys interacting with Polo in some fashion in several days. If predictions are right, Polo will be the stronger storm and will dominate, but each can still influence the track of the other, which adds uncertainty to the forecast."
Forecast models have trended toward Polo eventually turning northwest and potentially nearing Baja California, though the storm would likely weaken to Category 1 or 2 strength by then. Whether it makes a true landfall remains uncertain beyond the five-day forecast window.
Meanwhile, Tropical Depression Fifteen-E sat roughly 400 miles southeast of Hilo, Hawaii, and the NHC forecast it to approach the Big Island by Friday, as a hurricane. If named, it would become Tropical Storm Nolo. Hawaii's Big Island was still recovering from Hurricane Lala, a Category 1 storm that caused extensive damage to the island's southern communities on August 17 without making direct landfall.
The FOX Forecast Center projected heavy rain starting across the Big Island as early as Wednesday afternoon Hawaii time, continuing through the weekend and delivering 8 to 12 inches across the island. Localized totals on the eastern side could reach 12 to 18 inches.
And the NHC flagged yet another area of concern: a disturbance several hundred miles south of the Gulf of Tehuantepec, given high odds of developing into a tropical system over the next seven days. Bryan Lewis, a National Weather Service meteorologist, warned that even Southern California, far from any direct path, could face high surf, strong rip currents, and coastal flooding as Polo's swells combine with elevated tides.
For residents of New Mexico, the immediate concern is not Polo's peak wind speed or its place in the record books. It is the water. Monsoon thunderstorms, supercharged by tropical moisture, have turned arroyos and dry washes into flash-flood channels for weeks. Three people are dead near Newcomb. Evacuations are underway in Mora County. Flash Flood Warnings stretch from Albuquerque to El Paso.
This is the second time this season that major Pacific hurricanes have driven dangerous flooding into the Southwest, and the season has more than two months left. Nineteen named storms. Three Category 5 hurricanes. Four active systems at once. El Niño shows no sign of easing.
Records are interesting to meteorologists. To the people sandbagging their homes in Mora County, they are irrelevant. What matters is whether the water stops, and right now, the forecast says it will not.
