1:43 AM in Benito Juárez: The Silent Alarm and an Open Question for Women's Sport

In my notebook, I record every women's match in three lines: the date, the opponent, and a number that forces me to rewind the tape. On the night of September 28, the third line held no expected goal. It held a sound.

01:43. Benito Juárez borough, Mexico City. The ground trembled faintly for a few seconds, just enough to wake those who were asleep. The city's public seismic alert loudspeakers gave out no signal at all. By morning, the Servicio Sismológico Nacional (SSN) — Mexico's national seismological service — reported a magnitude 2.2 tremor, with its epicentre inside the capital itself.

From the numbers, I see a person waiting to be called by name. A magnitude of 2.2 says the ground was not strong enough for anyone to worry. But the Vietnam women's national football team, quartered a few kilometres from the epicentre as they prepared for an international tournament in 2040, received no explanation at that moment. All they knew was that something had just happened, and that the loudspeakers stayed silent.

That is why a story that seems purely geological found its way into my sports pages.

Benito Juárez: where the ground moves and the alarm stays quiet

Benito Juárez is an inner-city borough of Mexico City. Small tremors whose epicentres sit right beneath the city recur here every year. Locals are so used to the ground stirring briefly that they can tell a harmless shudder from a real earthquake.

The Mexico City Seismic Alert system — a public loudspeaker network covering the boroughs — was built to do exactly one job: to warn before hazardous seismic waves arrive. It was not programmed for every tremor, but for those capable of causing harm. A magnitude of 2.2 falls below that threshold, so the silence of the alarm was technically correct.

But there is a detail most spectators — and most foreign sports delegations — do not know: the SSN does not operate that alert system. Its mandate is to detect, locate and report. Pressing the button belongs to another body, and that body was never named in the original report.

That gap is small in seismological terms. It is large in terms of trust.

Detectable and understandable are two different things

In my trade, people often confuse “detectable” with “understandable”. A high xG figure does not automatically mean a great striker; it only means she was in the right place. A recorded tremor does not automatically mean a frightening earthquake; it only means the instrument did its job.

The SSN detected the tremor at 1:43. The alarm system did not need to sound, because the hazard threshold was never reached. Both statements are true. But the problem facing a foreign sports delegation is not “was this one dangerous”. The problem is “if a genuinely dangerous one comes, will we be warned, and by whom”.

This is where data becomes necessary in a different way. Not seismic data, but process data: who is responsible for notifying sports delegations, through which channel, within how many seconds, and who verifies that the message reached the right person.

At fifty, I understand that the pitch has no borders, but the heart has coordinates. Federations invest heavily in the competition and very little in the safety on its margins. The true value of a safety system lies not in the moment it works, but in the moment it stays silent for the right reason — and that is only useful when someone is accountable for explaining it to those who are waiting. A silent speaker with no one to explain it is like a statistic without a caption: it is not wrong, but it is useless to the person who needs it.

The contrarian view: do not blame the speaker

It would be easy to write a piece attacking Mexico City's alert system for staying silent. I think that is the wrong reading.

The speaker stayed silent because it was designed to stay silent in this case. If it sounded for every magnitude 2.2 tremor, within weeks people would learn to ignore it — and by then, a real warning would mean nothing. Any football person has seen this lesson: a referee who brandishes cards wrongly too often loses authority exactly when the match needs him most.

The real problem lies elsewhere. Between triggering an alert and being accountable for explaining why it was not triggered, there is a gap no one fills. The SSN is right to say it does not operate the speaker. But when the only body named in the report is the one that does not run the system, readers — and athletes — are left with a half-answered question.

Half an answer is sometimes more dangerous than none.

What remains after the tremor

The magnitude 2.2 tremor brought down no wall, injured no one, postponed no match. Judged by intensity alone, it is not worth a line of news.

Yet it leaves a question worth asking of the sports industry: women's sports delegations, which routinely camp in unfamiliar places on tighter budgets than their male counterparts, how well equipped are they to understand the environment they are competing in?

Misnaming a person costs a lifetime; getting it right is the greater respect. Here, what was misnamed was not a person, but the nature of an event — a harmless tremor read as a threat, and a real governance concern read as trivia. Women's football does not need spectators in order to heal; it needs professionals willing to read the report closely, ask the right question, and call by name the people sleeping on the ninth floor of that hotel.

The door that needs opening this time is a safety protocol with a name, a phone number, and a responsible person. That is what belongs in the notebook — instead of a magnitude 2.2 that will be forgotten within days.