September 22, 2026

Well.

That escalated quickly.

When we last checked in on the Eastern Pacific, Hurricane Polo was already intensifying rapidly. But the atmosphere apparently decided that “rapidly” wasn’t quite dramatic enough.

Over the course of less than 24 hours, Polo went from a Category 1 hurricane with 85-mph winds to a Category 5 hurricane with 165-mph winds.

Yes.

From Category 1 to Category 5 in less than a day.

And if you thought that was going to be the end of the plot twist, I have another tropical cyclone to introduce.

But first…

Meet Polo

At 3 PM CST Monday, September 21, the National Hurricane Center had Polo at 75 knots, or 85 mph.

Even then, the signs were there.

Satellite imagery showed a ragged eye and deep convection beginning to wrap around a broken eyewall. NOAA Hurricane Hunter data indicated that Polo was already undergoing an eyewall cycle, while the storm was sitting over extremely warm water in an environment of light wind shear and abundant moisture.

NHC was already anticipating a high-end rapid intensification event.

The forecast at that point called for Polo to become a major hurricane over the following couple of days.

Polo apparently had other plans.

And then the pressure started dropping.

By Monday evening, satellite imagery showed the eye becoming increasingly defined, with very cold cloud tops wrapping around it. The earlier eyewall replacement cycle appeared to have completed, and the storm was rapidly organizing.

At 9 PM Monday, NHC had increased Polo to 95 kt — 110 mph.

The discussion noted that the storm was sitting over 31°C water, with low shear and plenty of moisture. One rapid-intensification index was giving Polo an 81% chance of increasing by at least 40 knots during the following 24 hours.

And then came Tuesday morning.

🚨 Polo Goes Full Novela

At 3 AM CST Tuesday, September 22, NHC estimated Polo at 130 kt — 150 mph.

That is already a Category 4 hurricane.

And NHC pointed out something rather extraordinary:

Polo had strengthened by about 90 knots over the previous 24 hours.

That’s roughly 105 mph of additional wind speed in one day.

NHC called the intensification rate “truly remarkable.”

But Polo wasn’t finished.

At the 9 AM CST advisory, satellite imagery showed a small, well-defined eye surrounded by a symmetrical area of very deep convection, with prominent upper-level outflow and strong banding around the storm.

The estimated intensity was raised again.

165 mph.

920 mb.

Category 5.

So, let’s put that into perspective:

Monday, 3 PM: Category 1 — 85 mph
Tuesday, 9 AM: Category 5 — 165 mph

Less than 24 hours.

And while the number 165 mph is obviously eye-catching, there’s another interesting detail about Polo:

He’s a relatively small hurricane.

NHC estimates hurricane-force winds extend roughly 35 miles from the center, with tropical-storm-force winds extending about 90 miles.

So this is not an enormous hurricane simply because the number on the wind scale is enormous. Polo’s core is compact, intense and extremely powerful. 

🌀 And Now… The Plot Gets Complicated

Polo isn’t the only system we’re watching.

Remember Odalys?

She’s still out there to Polo’s west.

And while Odalys has been considerably less dramatic so far, she’s becoming better organized and is also expected to strengthen.

As of the Tuesday morning advisory, Odalys was a 65-mph tropical storm, moving north at about 5 mph.

NHC expects Odalys to continue strengthening and potentially become a hurricane later today or tonight.

And here’s where the two storylines begin to overlap.

Polo is expected to turn toward the west-northwest and eventually northwest as the steering pattern changes. Odalys, meanwhile, is expected to turn toward the northeast and east-northeast.

Farther out in the forecast period, the two systems could get close enough for some interaction between them.

Exactly how that plays out is one of the reasons the forecast becomes increasingly complicated farther into the future. NHC notes that potential interaction with Odalys contributes to increasing track uncertainty for Polo, particularly later in the forecast period.

And this is where the spaghetti begins. 🍝

🧶 What the Ensemble Tracks Are Showing

If you’ve followed the Novela for a while, you know I like showing the ensemble guidance because it gives us a visual representation of forecast uncertainty.

The Polo ensemble tracks are all over the place farther out in time.

That’s not necessarily because the models are “bad.”

It’s because there are several things that still have to happen before we know exactly where Polo goes:

• How sharply does Polo turn northwest?
• How close does the core get to the southwestern coast of Mexico?
• How does the ridge over Mexico evolve?
• How much does Polo weaken or fluctuate as internal eyewall processes continue?
• And eventually, what happens when Polo and Odalys get close to one another?

Those uncertainties become increasingly important several days out.

For now, NHC expects Polo’s core to remain offshore of southwestern Mexico, although the hurricane is expected to come close enough that wind, rain and surf impacts are possible along the coast.

And coastal Mexico is already dealing with watches and warnings.

As of the 9 AM CST advisory, Mexico had a Tropical Storm Warning from Tecpan de Galeana to Punta San Telmo, with a Tropical Storm Watch extending westward to Playa Perula.

🌧️ Meanwhile, There’s a Lot More Than Wind

Polo may be a compact hurricane, but that doesn’t mean the impacts are limited to the tiny area around the eye.

NHC forecasts 3–6 inches of rain, with isolated totals up to 8 inches, across coastal portions of Guerrero and Michoacán through Thursday.

Heavy rainfall could produce life-threatening flooding and mudslides, particularly in steep terrain.

Additional rainfall of 2–4 inches is possible along portions of the coasts of Oaxaca, Colima and Jalisco.

And then there’s the ocean.

Swells generated by Polo are expected to affect portions of the southwestern Mexican coast, bringing the potential for dangerous surf and rip currents.

So while Polo’s center is forecast to remain offshore, offshore does not mean impact-free.

👀 And What About Baja?

This is the part where I remind everyone of something we’ve talked about repeatedly during hurricane season:

A forecast track is not a forecast of the entire hazard area.

The NHC cone represents the probable track of the center of the tropical cyclone. It does not show the size of the storm, nor does it tell you where every hazard will occur.

And, as NHC itself emphasizes on the cone graphic:

Hazardous conditions can occur outside of the cone.

That’s especially important when you’re watching a system like Polo from Baja California Sur.

Right now, the important thing isn’t to look at the cone and ask, “Is Baja inside it?”

It’s to watch how the steering pattern, Polo’s eventual turn, and the interaction with Odalys evolve over the next several days.

That’s where the forecast can change.

And that’s why we keep watching.

🌀 One More Thing…

The satellite imagery tells its own story.

Polo has gone from a messy, rapidly organizing hurricane to a remarkably compact Category 5 with a tiny, well-defined eye in a remarkably short period of time.

And Odalys is simultaneously organizing to the west.

🌪️ The Bottom Line

Polo has gone from Category 1 to Category 5 in less than 24 hours, reaching an estimated 165 mph and 920 mbTuesday morning.

He’s expected to remain a major hurricane while moving generally toward the southwestern Mexican coast, with the core forecast to remain offshore.

Odalys is strengthening as well, and the eventual interaction between the two systems adds another layer of uncertainty to the forecast farther out.

So for Baja California Sur:

Prepared, not scared.
Watching, not predicting.

And apparently…

still watching the Novela. 🌪️🍿