Rain can make a fan zone uncomfortable, but lightning presents a much more serious safety challenge. Outdoor gatherings may need to be delayed, moved or cancelled if storms develop near crowded viewing areas.
Geijer stressed that public safety would take priority.
“In the event of danger from lightning, the necessary measures will be taken. We will not risk people's lives and health.”
That stance could mean on-site decisions shortly before supporters arrive, particularly if forecasts become more severe during the afternoon. For fans, the uncertainty may continue until the final assessment is made.
The report says cities are continuing to prepare large-scale screenings while monitoring the forecast. That reflects the competing pressures surrounding major tournament matches: demand for communal viewing is high, but football celebrations cannot come at the expense of basic safety.
Meteorologist Lasse Rydqvist warned that outdoor plans may be affected.
“I think this could affect the ability for many people to watch the match outside,” Rydqvist said.
Supporters may therefore need to consider indoor venues or follow updates before setting off. Organisers could also face a late rush for alternative locations if public screenings are suspended.
The next key moment will come when officials assess conditions on the ground before kick-off. For Sweden’s supporters, the first question may not be where to celebrate a result, but whether it will be safe to gather at all.