AN URGENT weather alert has been issued in two popular Spanish holiday islands.

Brit holiday hotspots Mallorca and Ibiza have been put on an urgent weather alert for heavy rain – just hours after Lanzarote received the same warning.

It comes as weather experts said the effects of Storm Olivier would be stronger than previously expected.

And the State Meteorological Agency has now activated a yellow alert for heavy rains for Sunday night and Monday.

The severe rainfall could leave up to 20 litres per square metre in just one hour.

The alert will remain active until Monday afternoon.

Weather agency Aemet first announced that Olivier would only leave partial cloud cover and light rainfall accompanied by mud.

But the evolution of the storm has forced the forecast to be changed.

Sunday has seen the skies overcast, with scattered rainfall, generally weak.

However, from Sunday night onwards, weather instability will increase.

Rains could be accompanied by storms, and be strong especially in the south and east of Mallorca.

Aemet will now activate the yellow alert in these areas from 9pm on Sunday.

On Monday, the severity in Mallorca will increase and the alert will be extended to the interior of the island.

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