The British blood rain phenomenon is expected to occur on Tuesday, according to scientists monitoring atmospheric conditions over Europe. The unusual weather event will happen when red Saharan dust mixes with ongoing rainfall across parts of the United Kingdom.
Experts from the Copernicus Atmosphere Monitoring Service said a plume of dust is moving north from the Sahara and drifting over Europe toward the UK. As the dust combines with persistent rain, it can give precipitation a reddish or muddy appearance.
Despite its dramatic name, blood rain is not considered harmful. Scientists say it typically leaves only a thin layer of dust on cars, windows, and outdoor surfaces.
According to Mark Parrington, a senior scientist at CAMS, the dust plume will mostly pass over southern England and the English Channel at higher altitudes. However, enough particles may mix with rainfall to cause visible discolouration.
How the British Blood Rain Phenomenon Forms
The British blood rain phenomenon occurs when strong desert winds lift fine dust high into the atmosphere. If upper-level winds blow north, the dust can travel long distances, reaching countries far from its source.
Scientists say the current dust plume is likely linked to seasonal biomass burning in Equatorial Africa. These particles are then carried across Europe before settling during rainfall events.
The phenomenon is expected to arrive in the UK by Tuesday afternoon and last for around two hours. CAMS said such events are relatively common and closely tracked using satellite and atmospheric data.
Earlier, the UK Met Office confirmed that the country’s wet weather pattern is likely to continue until mid-March, increasing the chance of dust-laden rain during this period.
