Lithuania lifts air alert after radar identifies weather balloon from Belarus

A yellow-level air threat alert issued for Vilnius county on Saturday morning was lifted after radar contact identified the object as a weather balloon that had drifted into Lithuanian airspace from Belarus. The alert, triggered shortly before 08:00 local time, prompted civil protection authorities to warn residents of a possible military drone, but officials confirmed within hours that the radar signature matched a meteorological balloon rather than a hostile platform.

Lithuanian authorities issued the alert at 07:52 CET, activating emergency protocols and advising residents in Vilnius and surrounding areas to stay indoors and avoid windows. The warning was distributed via SMS, mobile alerts, and public broadcaster LRT, which interrupted programming to announce the air threat. Social media platforms were flooded with images of the object, some showing reflective surfaces that initially fueled speculation about its nature. By 10:30 CET, the State Security Department of Lithuania (VSD) and the Lithuanian Air Force issued a joint statement clarifying that the object had entered from the east and was consistent with a high-altitude weather balloon used for meteorological observations.

The balloon’s trajectory was tracked by NATO’s Integrated Air and Missile Defence System (NATINAMDS) radars, which are part of the alliance’s enhanced air policing mission in the Baltic states. A spokesperson for the Lithuanian Ministry of National Defence told LRT that the balloon posed no threat and was likely a routine scientific instrument that had strayed off course. “The object was non-manoeuvring and lacked any characteristics of a military drone,” the spokesperson said. “Its altitude and speed were consistent with standard weather balloon operations.”

The incident underscores the challenges of distinguishing between benign and hostile objects in an era of heightened regional tensions. Belarus, which borders Lithuania, has in recent years deployed unmanned systems near its western frontier, prompting Vilnius to maintain a state of high alert. However, Lithuanian officials emphasised that Saturday’s alert was a precautionary measure rather than an indication of imminent danger. “We treat every unidentified object with the utmost seriousness,” said Defence Minister Arvydas Anušauskas. “But in this case, the evidence was clear within hours.”

The alert’s rapid resolution has drawn both relief and criticism. While some residents praised the transparency of the warning system, others questioned why a weather balloon had not been pre-identified by air traffic control. The Lithuanian Hydrometeorological Service confirmed it had not launched any balloons in the region on Friday or Saturday, leaving the balloon’s origin unclear. Investigations are ongoing to determine whether it was a stray scientific payload or an unauthorised launch.

For now, Vilnius has returned to normal operations, with the yellow alert officially lifted at 11:15 CET. The episode serves as a reminder of the delicate balance between vigilance and public reassurance in an increasingly contested airspace.