A massive humanitarian crisis is unfolding in Derna, Libya this week after Storm Daniel wreaked havoc on the city after flood waters overran their dams.

According to the latest from the mayor, the death toll could reach as high as 20,000 dead:

They’ve found well over 6,000 dead already and it is so significant that they are burying them in mass graves.

Here’s more from Newsmax:

The dead from Storm Daniel, which rocked Derna, Libya, earlier this week, reached above 6,000 on Wednesday, prompting authorities to bury victims in collective graves.

As many as 10,000 people are also missing, Libyan and Egyptian officials said.

The Wall Street Journal reported that authorities are struggling to identify bodies piling up on the street after floodwaters overwhelmed two nearby dams, which led to entire buildings washing away into the Mediterranean.

It’s caused unrelenting chaos in the area, leading to local officials ordering survivors to move to neighboring cities and towns like Bayda. Over 300 families reached there after the order was issued.

“I do think this is collective trauma for Libyans. It’s very difficult to come back from this,” Hanan Salah, a senior Libya researcher at Human Rights Watch, informed The Journal.

The incident is causing fears from neighboring Egypt of an imminent migrant crisis spurred by the storm’s devastation. In response, delegates from Cairo were sent over to coordinate a sufficient joint response.

It’s not hard to see the devastation when you look at it on the map below: