Hurricane Trudy is the storm Mexico's Pacific coast is watching right now, and the forecast changed in a big way on Friday afternoon. After spinning up to a Category 3 monster overnight, Hurricane Trudy turned out to be a little weaker than first thought, according to the U.S. National Hurricane Center. That is not a reason to relax, though, because the people in its path are still bracing for dangerous rain, wind and surf.

What forecasters are seeing

Early Friday, the hurricane center had Trudy at major-hurricane strength with top winds around one hundred twenty miles per hour. By midday, satellite wind data showed the storm was not as strong as the previous advisory claimed, and the maximum sustained winds were revised down to about one hundred ten miles per hour. A hurricane hunter aircraft was on its way into the system to check the numbers in person.

The center of Hurricane Trudy sat roughly two hundred thirty miles southwest of Acapulco, crawling north-northwest at about five miles per hour. A slow mover is bad news for anyone on land, since it gives the storm more time to dump water on the same hills and valleys. The minimum central pressure was estimated at nine hundred sixty-three millibars, which is still the profile of a serious hurricane.

Forecasters say some strengthening could still happen through Saturday, and they expect Trudy to remain a major hurricane when it makes its closest approach to Mexico. Weakening is predicted later in the weekend and into early next week. The track brings the storm near the coast of southwestern and west-central Mexico on Saturday and keeps it close to shore from Saturday night into Sunday.

Warnings up and down the coast

Mexico's government and the hurricane center have put a long stretch of shoreline on alert. A hurricane warning covers the coast from Manzanillo northward to Playa Perula. A hurricane watch is in place north of there up to Cabo Corrientes, and also from Manzanillo southward to Punta San Telmo. A tropical storm warning runs from Manzanillo south to Zihuatanejo, and forecasters said more watches and warnings will likely be needed by tonight.

The Mexican Navy has activated its Plan Marina storm protocol, according to El Heraldo de MΓ©xico, with preventive work aimed at families in Colima, Guerrero, Michoacan and Oaxaca. Larger boats have been barred from leaving Puerto Escondido, and smaller vessels are restricted in ports including Acapulco, Zihuatanejo and Huatulco. Fishing crews have already hauled their boats up onto the sand in Acapulco.

The real danger is the rain

For a lot of coastal communities, wind is only half the story. The hurricane center expects Trudy to produce four to eight inches of rain through the weekend in Michoacan, Colima and Jalisco, with isolated totals near fifteen inches. In steep terrain, that kind of rainfall can trigger life-threatening floods and mudslides in a matter of hours.

Farther south in Guerrero, the outer bands should bring two to four inches, with spots near six inches, enough for localized flash flooding. Storm surge is also possible where winds blow onshore, and large, destructive waves will ride on top of it. Swells from the storm are already reaching southwestern Mexico and will spread north, creating dangerous rip currents even for people who never see a drop of rain.

A region that has already had enough

What makes this storm feel heavier is the timing. Trudy is arriving in a region that has been hammered in recent weeks, with storms that left deaths and severe flooding behind, according to Reuters. Ground that is already soaked sheds water faster, so the same rainfall does more damage than it would in a dry spell.

Reuters also noted that Tropical Storm Simon, a former hurricane that drenched the coast earlier, was forecast to move northwest and graze the Baja California peninsula over the weekend. Two named storms in the same corner of the Pacific is not unusual for mid-October, but it stacks the pressure on emergency crews, who have to juggle shelters, road closures and rescues at once.

Why it matters beyond Mexico

Hurricane forecasting is getting better, yet Friday's revision is a reminder that intensity is still the hardest piece to pin down. A storm can jump a category overnight and then lose a chunk of its punch by lunchtime. Scientists link rapid intensification to warm ocean water, and a warming planet makes that fuel easier to find, a theme that runs through our climate coverage.

For now, the practical advice from forecasters is simple: follow local civil protection instructions, stay away from rivers and steep slopes, and keep an eye on each new advisory because the numbers can shift. The next full update from the hurricane center was due at three in the afternoon Central time, and it will show whether Trudy keeps weakening or finds a second wind before Saturday's landfall window opens.