Storm Gloria is foaming mad and she's got the suds to prove it.

On Tuesday, the Spanish town of Tossa De Mar near Barcelona was hit by the storm flooding the streets capped by copious clouds of seafoam. Like a giant washing machine going insane, the foam was carried with the wind and the flood's waves that would frequently ricochet off building walls to accentuate the storm's fury.

That foam is relatively harmless

For the most part, that foam is relatively harmless according to officials at the National Oceanic and Atmospheric Administration. The white stuff is comprised of algae blooms that can multiply on occasion in freshwater and its marine equivalent. It only becomes dangerous if those blooms include larger algae that can be seen decaying on a shoreline.

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But the foam is the least of everyone's worries. Storm Gloria has already killed nine people and left four people missing since Sunday.  It's also left 200,000 of Spain's citizens without power and destroyed several beach facilities. With wind speeds reported to be as high as 70 miles per hour, the storm prompted regional governments to close schools and block roads in areas already hit.

The worst Mediterranean storm in a long time

After smashing into eastern Spain with waves 50 feet high and heavy snowfall, it's on a path towards the southeastern part of France. Authorities who have declared Gloria to be the worst storm to hit the Mediterranean in recent memory have issued high alerts in areas where the storm is predicted to hit.