They say that the more you wish for something not to happen, the more likely it becomes for that event to happen. Desmond, Cecilia, and Kyuru were falling victim to precisely such a thing. Already incredibly close to their destination, the last thing the trio wanted was for something to come and block their path and make things difficult for them.
The apocalyptic-grade storm that now covered the sky certainly did the part of making things difficult. For the first time in a long time, Desmond felt incredibly small. That storm was so immense and intense that it covered everything in the trio's range of vision.
Being so close to their target, Desmond was tempted to continue despite the storm. That temptation quickly died when Desmond saw lightning mixed with the pouring rain. Having seen a beast in the two-star class reduced to smoldering coal, Desmond no longer dared to be reckless.
"We have to seek shelter."