Saharan Dust Over Europe: Weather Alerts and Thaw Flood Risk in Poland

A massive cloud of dust from the Sahara is approaching Europe, carried by a cyclone from the Iberian Peninsula. This phenomenon, referred to by meteorologists as dust rain or "blood rain," will reach Poland, Germany, and Switzerland over the coming weekend. Although Saharan dust is a natural phenomenon, its presence in the atmosphere causes a noticeable haze in the sky, tinting it a yellowish-orange color, and deposits a fine sediment on car bodies and windows. Experts warn that high concentrations of particles may be troublesome for people suffering from allergies and respiratory diseases, although it does not pose a direct threat to most of the population. In Poland, the weather situation is two-fold. On one hand, sunny and exceptionally warm days with double-digit temperatures are forecast, heralding the arrival of meteorological spring. On the other hand, nighttime temperature drops below zero and rapid snowmelt have led to numerous alerts being issued by the IMGW. The most serious hydrological situation is in the north of the country, where alarm levels have been exceeded on rivers, including the Łyna and Guber rivers. The Institute points to five hydrological stations where water levels have reached a dangerous threshold, raising the risk of local flooding. The phenomenon of Saharan dust transport over Central Europe occurs regularly, most often in spring and summer, when strong air currents in the upper layers of the troposphere carry millions of tons of sand from Africa over distances of thousands of kilometers. Simultaneously, dense fog is expected on Thursday evening and overnight from Friday to Saturday, reducing visibility to just one hundred meters. First-degree warnings cover a large part of the country, including the Mazovian, Łódź, and Warmian-Masurian voivodeships. Drivers should exercise particular caution, especially in regions affected by snowmelt, where roads may become icy. Although the current warm spell appears to be lasting, long-term forecasts suggest a possible return of frost around the Easter holidays, which fits the typical variability of March weather in the Polish climate. „Ce phénomène de poussière, typique des flux de sud, affectera sensiblement la clarté du ciel dans les prochaines heures.” (This dust phenomenon, typical of southerly flows, will significantly affect sky clarity in the coming hours.) — Météo France