Hail the size of golf balls fell from the sky
In the span of a single week, three continents found themselves humbled by weather that refused to follow familiar rules. A cold front tore through the Balkans with golf-ball hail and roof-stripping winds, Hong Kong sheltered under its second black rainstorm warning in ten days, and France baked under a heatwave that chose the north over the south — inverting the patterns generations had come to expect. Taken together, these simultaneous emergencies ask a quiet but insistent question: at what point does the exceptional become the ordinary?
- A cold front descending from the north collided with unstable Adriatic air to unleash 65mph winds and golf-ball-sized hail across Slovenia and Croatia, leaving more than 100 buildings damaged — some stripped of their roofs entirely.
- Hong Kong issued its most severe rainstorm alert for the second time in ten days, with 70mm of rain falling in a single hour and 50mph gusts battering the district of Tai O, forcing schools to close and outdoor workers indoors.
- France's heatwave is defying historical geography, concentrating its worst heat — forecast to reach 41C — in the cooler north and west rather than the traditionally scorched south, signalling a shift in the jet stream that forecasters are watching closely.
- Emergency services across the Balkans, Hong Kong, and France are simultaneously managing damage, flooding, and heat stress, stretching response capacity across multiple regions at once.
- Meteorologists note that while each event has its own atmospheric cause, their concurrence across three continents reflects a broader pattern in which extreme weather is losing its character as a rare interruption and becoming a near-constant condition.
A cold front that began moving south on June 10 announced itself violently in Slovenia, where instruments at Ljubljana airport recorded winds of 65 miles per hour and nearby Kranj received 23 millimetres of rain in short order. The front had drawn its energy from hot, unstable air sitting over the Adriatic, and as it pushed southeast the storm grew more severe.
By the time it reached Croatia, hail the size of golf balls was falling — a sign of the fierce updrafts churning inside the system. The Komenda municipality took the worst of it: local firefighters counted damage to more than 100 buildings, with some homes losing their roofs entirely. The front continued its march into Bosnia and Herzegovina overnight and reached Greece by June 12.
Across the world, Hong Kong was issuing a black rainstorm warning — the territory's highest alert, which sends outdoor workers to shelter and closes schools. The grim detail was the timing: it was the second such warning in just ten days, following a June 8 event that had already flooded much of the city. This new system brought more than 70 millimetres of rain in a single hour, with gusts of 50 miles per hour recorded in Tai O.
France, meanwhile, was living through a heatwave that felt geographically wrong. Temperatures were climbing toward a forecast high of 41 Celsius — but the heat was pooling in the north and west, regions that historically stay cooler while the Rhône valley and the south bear the brunt. The inversion pointed to shifts in the jet stream that sit outside the historical norm.
Three separate atmospheric systems, three separate emergencies, unfolding at the same moment across Europe and Asia. Each had its own cause, but together they traced the outline of a world in which extreme weather is becoming less an event to be endured and more a condition to be managed — continuously, and everywhere at once.
A cold front that began its descent on June 10 carved a path of destruction across three continents within days, leaving behind a trail of damaged homes, flooded streets, and weather warnings that forced entire regions to shut down. In Slovenia, the Slovenian Environment Agency clocked winds at 65 miles per hour at Ljubljana airport as the system moved in, accompanied by rain that measured 23 millimeters in the nearby town of Kranj. The storm had formed where hot, unstable air hung over the Adriatic Sea and collided with the advancing cold mass pushing down from the north.
As the front edged southeast toward Croatia, the violence intensified. Hail the size of golf balls fell from the sky, a phenomenon that typically signals the most severe updrafts within a thunderstorm. The Komenda municipality bore the brunt of this assault—the local fire department documented damage to more than 100 buildings, with some homes losing their roofs entirely to the wind. By the early hours of June 11, the system had crossed into Croatia and Bosnia and Herzegovina. Greece felt its effects by June 12.
On the opposite side of the world, Hong Kong was enduring its own weather emergency. The Hong Kong Observatory issued a black rainstorm warning on Thursday—the highest alert level in their system, one that triggers mandatory shelter-in-place orders for outdoor workers and closes schools. The timing was particularly grim: this was the second black warning in just ten days. The first had come on June 8, already bringing widespread flooding to the territory. This second system delivered hourly rainfall totals exceeding 70 millimeters, with wind gusts reaching 50 miles per hour in the district of Tai O.
Meanwhile, France was experiencing something meteorologically unusual. A heatwave had settled over the country with temperatures climbing into the mid-to-high 30s Celsius, and forecasts suggested they would push toward 41 Celsius in the coming days. What made this pattern atypical was its geography. The most intense heat was concentrating in northern and western France—regions that typically remain cooler than the Rhône valley and other southern areas, which are the usual hotspots during French heatwaves. The reversal of this pattern underscored how the jet stream and pressure systems had shifted in ways that defied the historical norm.
These three weather events—the Balkan storms, the Hong Kong flooding, and the French heat—were unfolding simultaneously but independently, each driven by different atmospheric configurations. Yet together they illustrated a planet where extreme weather was becoming less a rare occurrence and more a recurring fact of life across multiple regions at once.
Citas Notables
The Slovenian Environment Agency recorded 65mph gusts at Ljubljana airport— Slovenian Environment Agency
The local fire department reported damage to more than 100 buildings in Komenda municipality— Komenda municipality fire department
La Conversación del Hearth Otra perspectiva de la historia
Why did the storm system move so predictably from Slovenia through to Greece? Was there something about the geography that channeled it?
The cold front was like a wedge being driven into warm air. The Adriatic held all that unstable heat, and when the cold mass came down from the north, the collision was inevitable. The geography didn't channel it so much as the physics demanded it move southeast—that's where the warm air was waiting.
And the hail—golf-ball sized hail requires specific conditions, doesn't it?
It does. You need violent updrafts, moisture, and a layer of cold air aloft. When you get all three, the ice particles get tossed up and down repeatedly, accumulating layers. By the time they fall, they're heavy and large. In Komenda, that meant roofs coming off.
The Hong Kong warning came just ten days after the first one. Is that unusual?
It suggests the atmospheric pattern isn't clearing. Usually you'd expect systems to move through and conditions to stabilize. Two black warnings in ten days means the region is stuck in a cycle—moisture is being fed in repeatedly, and the system isn't moving away.
And France's heatwave being in the north instead of the south—that's the real anomaly here?
Exactly. The Rhône valley usually bakes first. But this time the heat is concentrated where it shouldn't be. That tells you the jet stream is in an unusual position, steering warmth into regions that aren't accustomed to it.
So these three events—are they connected, or just coincidence?
They're independent events driven by different pressure systems. But they're all happening at once, which is the real story. Extreme weather used to feel scattered. Now it feels like the baseline.