Met Office reveals whether ‘Blood Rain’ will hit North East

This week, Saharan dust has been moving across Europe.

With the Atlantic weather systems heading towards the UK, many are questioning if this will result in “blood rain”, a term used to describe rain that appears tinted red due to the presence of dust in the atmosphere, impacting the UK on Wednesday or Thursday.

However, the Met Office has provided some clarity regarding this phenomenon.

What is Blood Rain?

It’s important to note that ‘blood rain’ is not a scientific term.

The rain’s red tint can range from a mild rusty colour to deeper reds, depending on the concentration of dust in the air during a downpour.

Typically, these particles are abundant in iron oxides, lending them the red hue.

For the rain to visibly appear red, a relatively high concentration of these particles needs to mix with the droplets in the atmosphere during a downpour.

Where does it happen?

More commonly, though, rain appears normal and may leave a thin film of dust on surfaces once dried.

Regarding the upcoming days, the UK, especially the southern parts, can expect a plume of dust coming northward from the Sahara Desert.

This atmospheric event may lead to dust settling out with the rain on Wednesday and Thursday.

Despite the looming presence of this phenomenon, the Met Office assures that the density of dust in the rain will remain low.

(Image: Jordan Pettitt/PA Wire)

Resulting Rainfall Pattern

This means the rainfall won’t appear distinctly red, but rather, will likely leave a light layer of yellowish or brownish particles on cars and windows once it dries.

For those in the southwest, overnight and early-morning rain on Thursday could carry these dust particles due to a moist south-westerly airflow interacting with a broad dust plume.

Conversely, dust levels for other parts of the UK are forecast to remain even lower, resulting in non-differential rainfall.

Residents in the region may notice a light dusting on vehicles, decreased visibility at high altitudes, and possibly, notably vibrant sunrises and sunsets caused by the scattering effect of the airborne dust particles on sunlight.

On the brighter side, the expected dust levels carry no significant health threats.

People with sensitive respiratory systems may only perceive a minor increase in airborne particles until the rain clears the atmosphere.

If you’re planning to wash your car, waiting until the end of the week may be wise, as additional dust pulses could reach the UK before conditions settle.