The Civil Defense of Petrópolis, located in the mountainous region of Rio de Janeiro, activated the first siren alert at 15:45 on Saturday due to forecasts predicting moderate to heavy rain. While the agency has stated there is currently no need for mobilization, residents are advised to remain vigilant for further updates regarding the weather situation.

Earlier in the afternoon, residents received an SMS alert regarding the expected rain, which may also include thunderstorms and gusting winds. In addition to the siren alert, the Civil Defense has encouraged residents to register their postal codes via SMS to receive timely updates about weather conditions and other alerts from local authorities.

The proactive measures taken by Petrópolis' Civil Defense highlight the region's preparedness for potential weather emergencies, reflecting a focus on ensuring public safety in anticipation of severe weather events. Residents are encouraged to stay informed through the municipal government's weather portal to monitor changes in conditions and any necessary preparations they may need to undertake.