Hurricane Polo has exploded into one of the most powerful storms ever recorded in the eastern Pacific, rapidly strengthening off Mexico’s Pacific coast before beginning a track toward the Baja California region.
The storm has already reached Category 5 intensity, produced enormous waves along Mexico’s coastline and triggered evacuations, school closures and emergency preparations across several states. Forecasters are now watching Polo’s next move closely as the hurricane begins turning northwest.
Here is everything you need to know about Hurricane Polo as of Friday, September 25.
Polo Went From Tropical Storm to Category 5 at an Extraordinary Speed
Polo developed from a tropical disturbance off Mexico in mid-September. It became a tropical depression on September 20 and strengthened into a tropical storm shortly afterward.
Then the atmosphere essentially opened the door.
Warm ocean water, abundant moisture, low wind shear and favorable upper-level winds created an environment that NASA described as nearly ideal for rapid strengthening. Polo’s sustained winds increased by roughly 90 knots — about 104 mph — within a 24-hour period as the system surged to Category 5 strength.
At its peak, reconnaissance aircraft measured sustained winds near 180 mph. NASA noted that the figure would place Polo among the strongest eastern Pacific hurricanes on record by maximum sustained wind.
Even more remarkable was its pressure.
A minimum central pressure of 892 millibars was measured on September 22, making Polo the second-most intense hurricane recorded in the eastern Pacific by central pressure, behind Hurricane Patricia in 2015.
That puts Polo in extremely rare company.
How Strong Is Hurricane Polo Right Now?
Polo’s intensity has fluctuated between Category 4 and Category 5 as the hurricane has undergone changes to its eyewall.
The National Hurricane Center reported late Thursday that Polo had maximum sustained winds of about 150 mph, with gusts considerably higher. The storm was roughly 195 miles southwest of Manzanillo and moving generally west at around 12 mph.
By Friday, Polo remained an exceptionally powerful major hurricane. Reports indicated maximum sustained winds around 150 mph while the system continued moving toward the Baja California region. Hurricane-force winds extended roughly 40 miles from the center, while tropical-storm-force winds stretched as far as approximately 125 miles.
Intensity changes are still possible. Major hurricanes often strengthen and weaken temporarily because of eyewall replacement cycles, during which a new outer eyewall forms and eventually replaces the inner one.
Polo has already experienced that process.
Where Is Polo Going?
The biggest change in the forecast is Polo’s movement away from southwestern mainland Mexico and toward the northwest.
Forecasters expect the hurricane to move west-northwest before taking a more northwesterly path over the weekend. That trajectory places Baja California Sur increasingly within the area residents and travelers should monitor closely.
The storm initially tracked close enough to southwestern Mexico for its outer bands to hammer portions of the coastline even though the hurricane’s destructive inner core remained offshore.
The longer-range forecast becomes more uncertain as Polo approaches Baja California.
Small changes in steering currents can produce significant differences in where a hurricane ultimately travels several days later.
Southwestern Mexico Has Already Felt the Impact
Polo did not need to make a direct landfall to cause problems.
Large rainbands moved across portions of Guerrero, Michoacán, Colima and Jalisco, producing heavy rainfall and dangerous coastal conditions.
In Lázaro Cárdenas, Michoacán, seawater pushed into homes on Thursday. Reports described waves around 15 feet high damaging coastal businesses and property.
Mexican authorities deployed approximately 15,000 security personnel, opened shelters, suspended classes and evacuated residents from vulnerable areas.
The storm has also generated extremely dangerous surf.
At one point, the National Hurricane Center reported peak seas around 41 feet near the hurricane.
Even locations far from the eye can experience powerful rip currents, coastal flooding and large breaking waves when a hurricane of Polo’s size and intensity moves nearby.
Flooding and Mudslides Remain Major Concerns
Wind speed attracts most of the attention with Category 4 and Category 5 hurricanes, but rainfall can sometimes become the more widespread threat.
Polo’s outer bands have produced torrential rain along Mexico’s mountainous Pacific coast.
That terrain makes flash flooding and mudslides especially dangerous.
Earlier National Hurricane Center forecasts warned of life-threatening flooding and landslides across portions of Guerrero and Michoacán as Polo moved nearby.
Residents are being urged to stay away from flooded roadways and streams and to follow local evacuation guidance.
Why Did Polo Become So Powerful?
The Pacific waters underneath Polo have been exceptionally warm.
NASA found sea-surface temperatures along parts of Polo’s path reaching approximately 90 degrees Fahrenheit, or about 32 degrees Celsius. In some locations, that was roughly 2 to 3 degrees Celsius above normal for the date.
Warm water alone does not guarantee a major hurricane.
Polo also encountered relatively weak wind shear, high atmospheric moisture and favorable upper-level outflow.
Together, those conditions allowed the hurricane to rapidly organize.
Another important factor was ocean heat below the surface.
Hurricanes normally churn colder water toward the surface as they strengthen. That process can weaken a storm.
But NASA researchers noted that Polo traveled through an area with substantial heat extending deeper into the ocean. That meant the hurricane had a large reservoir of energy available even after stirring the water beneath it.
Is El Niño Playing a Role?
The unusually active Pacific hurricane season is unfolding during strong El Niño conditions.
El Niño tends to warm portions of the central and eastern Pacific while altering atmospheric circulation in ways that can create more favorable conditions for tropical cyclones in the eastern Pacific.
However, scientists caution against saying El Niño alone caused Polo’s extreme intensification.
Powerful rapidly intensifying hurricanes have developed during El Niño, La Niña and neutral conditions.
What can be said is that the broader eastern Pacific has been unusually active. As of September 24, accumulated cyclone energy in the basin was running at nearly twice its typical level, according to data cited by NASA.
Could Polo Affect the United States?
A direct U.S. landfall is not currently the primary forecast scenario.
However, Polo could still have indirect effects.
Moisture associated with the hurricane may eventually get pulled north and northeast into parts of the southwestern United States. Forecasters in New Mexico are already monitoring the possibility that Polo’s tropical moisture could contribute to thunderstorms and heavier rainfall next week.
Large Pacific swells could also affect areas well away from the hurricane itself.
Exactly how much moisture reaches the United States will depend on Polo’s eventual track, how quickly the storm weakens and how it interacts with weather systems over the western U.S.
Polo Is Not the Only Major Pacific Storm
The Pacific is exceptionally busy.
While Polo threatens Mexico, Hurricane Nolo is approaching Hawaii and could produce extreme rainfall on the Big Island.
Forecasters have warned that some areas could receive 15 to 30 inches of rain, with even higher localized amounts possible.
Hurricane Odalys also remains active farther out in the Pacific.
The simultaneous activity illustrates just how unusual the Pacific hurricane season has become.
What Happens Next?
Three things will matter most over the next several days: Polo’s exact turn toward Baja California, how quickly the hurricane begins weakening and how close its core gets to populated portions of the peninsula.
Even if the center remains offshore, dangerous surf, flooding, rainfall and tropical-storm-force winds can extend well beyond the eye.
Anyone in Baja California Sur, western Mexico or areas planning travel near Cabo San Lucas and surrounding coastal communities should continue monitoring official forecasts closely.
Polo has already secured its place as one of the most extraordinary hurricanes of the 2026 season.
Going from a developing tropical cyclone to a Category 5 monster with winds reaching 180 mph in roughly two days is rare under any circumstances.
And with Polo still moving across exceptionally warm Pacific water, this storm is not finished yet.
THIS Newsroom will continue monitoring Hurricane Polo as the forecast develops.
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