Hurricane Polo has quickly become one of the most remarkable tropical cyclones of 2026.
The eastern Pacific storm underwent an extraordinary period of rapid intensification, strengthening from a tropical storm to a Category 5 hurricane in roughly 24 hours. At its peak, Polo had maximum sustained winds of about 180 mph and a minimum central pressure near 892 millibars.
Those numbers place Polo among the strongest hurricanes ever observed in the eastern Pacific.
From Tropical Storm to Category 5
Polo’s rapid strengthening was fueled by an environment that was highly favorable for tropical development, including warm ocean water and atmospheric conditions that allowed the hurricane’s circulation to become increasingly organized.
In approximately one day, Polo went from a tropical storm to a Category 5 hurricane.
Its peak intensity of around 180 mph is particularly remarkable. The hurricane also produced enormous seas, with significant wave heights approaching 45 feet.
For meteorologists, the storm’s extremely low central pressure is another indication of just how intense Polo became. At approximately 892 mb, the pressure was among the lowest ever observed in an eastern Pacific hurricane.
An Eyewall Replacement Cycle
Polo has since weakened somewhat while undergoing an eyewall replacement cycle.
This occurs when a new eyewall develops around the original one. The process can cause a hurricane’s maximum winds to decrease temporarily, although the overall wind field can become larger.
By Wednesday afternoon, satellite imagery indicated that Polo was nearing the end of this process. Its eye was becoming more distinct, and the National Hurricane Center reported that intensity estimates were no longer falling.
The Wednesday afternoon advisory had Polo with maximum sustained winds of 145 mph, still making it a powerful Category 4 hurricane.
The NHC expects Polo could strengthen again during the next day as the eyewall replacement cycle concludes before gradually weakening later in the forecast period as wind shear increases and drier air becomes more influential.
An Unusual Contrast With the Atlantic
Polo’s strength is particularly interesting considering how different the Atlantic hurricane season has been.
As of September 23, the Atlantic has not produced a single hurricane in 2026. There have been six named storms, but none have reached hurricane strength.
That has now set a record for the latest date in the calendar year without an Atlantic hurricane. The previous record was September 21, 1941.
So while the Atlantic has gone through an unusually quiet stretch, the eastern Pacific has produced Polo — a hurricane that rapidly intensified into one of the most powerful storms observed in the basin.
The two hurricane basins have different atmospheric and oceanic environments, so activity in one does not necessarily determine activity in the other. However, the contrast makes 2026 an especially interesting hurricane season from a meteorological perspective.
What Happens to Polo Next?
Polo is currently moving northwestward over the eastern Pacific, with the center expected to remain offshore of Mexico. Its outer rainbands are affecting portions of southwestern Mexico, where heavy rainfall and tropical-storm-force winds are possible.
The forecast becomes less certain later in the week.
The latest National Hurricane Center guidance calls for Polo to eventually turn more toward the north as it moves west of Baja California. There remains significant uncertainty regarding the exact track beyond the next few days.
Eventually, Polo will encounter an environment that is less favorable for maintaining its tropical structure. As it weakens, the storm will transition away from being a tropical hurricane.
That brings up an interesting possibility for the Southwest.
Could Polo’s Remnants Affect Colorado?
Even though Colorado is a land locked state, hurricanes can still impact us. Remnants of Polo could potentially become incorporated into a larger low-pressure system over the western United States.
If that happens, some of Polo’s remaining moisture could be transported northward into the Southwest. Depending on how the larger weather pattern develops, that moisture could eventually contribute to rainfall across parts of Arizona, New Mexico, Utah and/or Colorado.
There is still considerable uncertainty surrounding this possibility, and it is too early to determine how much influence Polo’s remnants might have on Colorado’s weather.
For Colorado, the potential story is whether Polo’s leftover moisture and energy become part of a larger, non-tropical storm system later in the week or early next week.
A Storm Worth Watching
Regardless of what happens after it leaves the tropics, Hurricane Polo has already produced an extraordinary chapter in the 2026 hurricane season.
A tropical storm becoming a Category 5 hurricane in roughly 24 hours, reaching winds near 180 mph and a central pressure around 892 mb, is an exceptional display of rapid intensification.
At the same time, the Atlantic has yet to produce a hurricane, creating a remarkable contrast between the two basins.
Now the focus shifts to Polo’s next phase: how the hurricane weakens, where its remnants go and whether any of its tropical moisture becomes incorporated into the larger weather pattern across the Southwest.
For Colorado, that is the part of the story worth watching.