[REVISION HISTORY]

Severe weather and temperature volatility in Poland

Updated 65 times since CLSTR started tracking revisions of this situation.

What changed

2026-10-24 16:56 UTC → 2026-10-25 08:11 UTC · added ~~removed~~

Weather patterns in Poland showed extreme variability during the transition from August to September 2026. Late August saw thunderstorms and wind gusts up to 65 km/h, followed by a brief heatwave in southern regions. On August 31, the IMGW issued first-degree alerts for several regions. As September progressed, conditions escalated with second-degree alerts for wind gusts up to 100 km/h, resulting in over 1,700 State Fire Service interventions. A wind incident in Recz caused four injuries. By September 8, heat warnings covered eight voivodeships, with temperatures reaching 40°C in some areas, causing crop losses of up to 50 percent in regions like Opole. Mid-September saw further instability, including a ‘gustnado’ near Smolic on September 16. A polar cold front on September 19 caused temperatures to drop by 10 to 15°C, bringing rain and snow. In late September, a powerful anticyclone named ‘Arno’ brought an ‘Indian summer’ with sunny skies and temperatures between 17°C and 25°C. ~~However, this period was marked by significant temperature fluctuations, including cold nights in the Carpathians and dense fog in valleys.~~ This dry pattern potentially deepened existing drought conditions. In early October, ~~a shift occurred as~~ low-pressure systems ~~moved from west to east. After initial warmth reaching 23°C in the southeast, temperatures dropped to between 12°C and 14°C, accompanied by widespread~~ brought rain and wind gusts of 80 to 90 km/h in the Carpathians. By ~~October 7, volatility continued with coastal wind alerts of~~ mid-October, the IMGW issued warnings for incoming low-pressure systems bringing rain, storms, and winds up to ~~100~~ 110 km/h near the coast, while the Tatra and ~~warnings of a turbulent winter season influenced by El Niño~~ Sudetes ranges faced snow and ~~polar vortex shifts. By~~ sleet. A temperature shock was anticipated for late October, with significant differences between the warmer west and colder east. By October 22, models indicated a ~~deep cyclone was expected~~ drastic change in air circulation, with daytime highs potentially struggling to ~~bring strong winds~~ exceed 8°C and ~~potential snowfalls~~ heavy snowfall of up 10 to 20 cm expected in southern ~~and southeastern regions, including~~ highlands. As October concluded, a high-pressure system in the ~~Beskids, Tatras,~~ east and ~~Podkarpacie.~~ low pressure over Scandinavia were projected to drive colder air into the region around October 27-28, with potential for extreme Arctic air to bring temperatures toward minus 20°C.

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